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Hanabi is a cooperative game. Your goal, as a team, is to build a fabulous fireworks show. You have to put together 5 fireworks ( 1 white, 1 red, 1 blue, 1 yellow, 1 green), by making series rising in number (1, 2, 3, 4, 5) with the same coloured cards.
== Overview ==


* Hanabi is a cooperative game. Your goal, as a team, is to build a fabulous fireworks show.
* You have to put together fireworks by playing each individual colour ''(red, yellow, green, blue and white)'' in series (1 ⇨ 2 ⇨ 3 ⇨ 4 ⇨ 5).
* Each colour in the deck has {{card|1}}{{card|1}}{{card|1}}, {{card|2}}{{card|2}}, {{card|3}}{{card|3}}, {{card|4}}{{card|4}}, {{card|5}}.
* You cannot see your own cards; you can only see the cards of your teammates.
* You can only communicate with your teammates via '''clues''', '''playing''' and '''discarding''' cards (see below).
* No other communication is allowed.


However, you cannot see your own cards; you can only see the cards of your team mates. 
{|class="wikitable" style="width:auto;" border="2"
 
Also, communication (and non communication) between the players is essential to Hanabi.
 
You can only communication with your teammates when you give them a clue (see below). 
 
No other communication is allowed.
 
Your final score is the total of the top cards on the five piles:
 
{|class="wikitable" style="width:auto; text-align:center;" border="2"
|+Final Score Ratings
|+Final Score Ratings
!Points
!Points
Line 32: Line 28:
|amazing, will be remembered for a very long time!
|amazing, will be remembered for a very long time!
|-
|-
|25
|25-29
|legendary, everyone left speechless, stars in their eyes
|legendary, everyone left speechless, stars in their eyes!
|}
|-
|30
|Divine, the display outshines the stars!
|}Note: '''25''' is the maximum score with '''Normal: 5 colors'''.


== Card distribution ==
== Setup ==


* Each card has a colour and a number.
<div style="display:flex;gap:2rem;align-items:center;">
{|class="wikitable" style="width:auto;" border="2"
{|class="wikitable" style="width:auto;" border="2"
|+Normal difficulty (50 cards)
|+Deal
!Red (r)
!# Players
|{{card|=1|background=#324|colour=#d03|size=2}}{{card|=1|background=#324|colour=#d03|size=2}}{{card|=1|background=#324|colour=#d03|size=2}}
!2-3
|{{card|=2|background=#324|colour=#d03|size=2}}{{card|=2|background=#324|colour=#d03|size=2}}
!4-5
|{{card|=3|background=#324|colour=#d03|size=2}}{{card|=3|background=#324|colour=#d03|size=2}}
|{{card|=4|background=#324|colour=#d03|size=2}}{{card|=4|background=#324|colour=#d03|size=2}}
|{{card|=5|background=#324|colour=#d03|size=2}}
|-
|-
!Yellow (y)
!# Cards
|{{card|=1|background=#324|colour=#fe5|size=2}}{{card|=1|background=#324|colour=#fe5|size=2}}{{card|=1|background=#324|colour=#fe5|size=2}}
|5
|{{card|=2|background=#324|colour=#fe5|size=2}}{{card|=2|background=#324|colour=#fe5|size=2}}
|4
|{{card|=3|background=#324|colour=#fe5|size=2}}{{card|=3|background=#324|colour=#fe5|size=2}}
|{{card|=4|background=#324|colour=#fe5|size=2}}{{card|=4|background=#324|colour=#fe5|size=2}}
|{{card|=5|background=#324|colour=#fe5|size=2}}
|-
!Green (g)
|{{card|=1|background=#324|colour=#2a7|size=2}}{{card|=1|background=#324|colour=#2a7|size=2}}{{card|=1|background=#324|colour=#2a7|size=2}}
|{{card|=2|background=#324|colour=#2a7|size=2}}{{card|=2|background=#324|colour=#2a7|size=2}}
|{{card|=3|background=#324|colour=#2a7|size=2}}{{card|=3|background=#324|colour=#2a7|size=2}}
|{{card|=4|background=#324|colour=#2a7|size=2}}{{card|=4|background=#324|colour=#2a7|size=2}}
|{{card|=5|background=#324|colour=#2a7|size=2}}
|-
!Blue (b)
|{{card|=1|background=#324|colour=#0ae|size=2}}{{card|=1|background=#324|colour=#0ae|size=2}}{{card|=1|background=#324|colour=#0ae|size=2}}
|{{card|=2|background=#324|colour=#0ae|size=2}}{{card|=2|background=#324|colour=#0ae|size=2}}
|{{card|=3|background=#324|colour=#0ae|size=2}}{{card|=3|background=#324|colour=#0ae|size=2}}
|{{card|=4|background=#324|colour=#0ae|size=2}}{{card|=4|background=#324|colour=#0ae|size=2}}
|{{card|=5|background=#324|colour=#0ae|size=2}}
|-
!White (w)
|{{card|=1|background=#324|colour=#fff|size=2}}{{card|=1|background=#324|colour=#fff|size=2}}{{card|=1|background=#324|colour=#fff|size=2}}
|{{card|=2|background=#324|colour=#fff|size=2}}{{card|=2|background=#324|colour=#fff|size=2}}
|{{card|=3|background=#324|colour=#fff|size=2}}{{card|=3|background=#324|colour=#fff|size=2}}
|{{card|=4|background=#324|colour=#fff|size=2}}{{card|=4|background=#324|colour=#fff|size=2}}
|{{card|=5|background=#324|colour=#fff|size=2}}
|}
|}
{{Hclue|8}} clue tokens
</div>


=== Multicolour cards ===
== Game play ==
 
Players take turns to either:
 
* Give a '''clue'''
* '''Play''' a card, or
* '''Discard''' a card
 
=== Clue ===
 
Possible with at least {{Hclue|1|size=1.5}} available:
* '''All''' cards of a colour, or
* '''All''' cards of a number, or
* '''No''' cards of a colour, ''e.g. "'''Player1''' to '''Player2''': you have no red card"'' or
* '''No''' cards of a number ''e.g. "'''Player1''' to '''Player2''': you have no 5"''
 
# The active player selects a card in another player's hand.
# The active player selects a clue option.
# {{Hclue|1|size=1.5}} is moved from 'available' to 'used'.
 
=== Play ===
 
# The active player selects a card in their hand.
# The active player selects the 'Play selected card' button.
#* If the played card fits in any of the sequences, it is placed in the appropriate colour stack on the table.
#* If the played card does not fit, it is placed in the discard pile and the team gets a ''misfire'' token.
# A replacement card is drawn.
 
=== Discard ===
 
Possible with fewer than {{Hclue|8|size=1.5}} available:
# The active player selects a card in their hand.
# The active player selects the 'Discard selected card' button.
# The discarded card is placed in the discard pile.
# {{Hclue|1|size=1.5}} is moved from 'used' to 'available'.
# A replacement card is drawn.
 
== Game end ==


* There are three variants that add a 6th colour: the multicolour.
The game can end in several ways:
* There are three difficulties:
* All cards have been drawn from the deck. After this happens, each player has one more turn. The game ends with the score after the last turn.
* Your team played all possible cards. In this case, the game ends immediately.
* Your team made three mistakes that caused misfires. In this case, all players lose the game and receive -10 ELO points.
* Your team concedes the game. All players receive -10 ELO points.
* A player quits the game. Only the player that quit first receives -10 ELO points. All other players' ELO is unchanged.


==== Tricky ====
== Conventions ==


* These cards get marked by a separate '''multicolour clue'''.
* There are not enough {{Hclue|size=1}} to clue both colour and number of every played card, so the team must agree on a set of clue, play and discard interpretations, known as a convention.
{|class="wikitable" style="width:auto;" border="2"
* Many players use different conventions and if teammates have very different clue interpretations, the game becomes unsuccessful.
|+Tricky difficulty (+10 cards)
* Read about some of the most common conventions in '''[https://boardgamearena.com/forum/viewtopic.php?t=26863 this forum post]''' by [https://boardgamearena.com/player?id=84207926 Romain672].
!Multicolour (m)
''Note: the BGA list of conventions does not cover all conventions, so please respect the convention the table creator wants to play. This is why there is an option to display the convention for the table.''
|{{card|=1|background=#324|colour=#717|outlineColour=#fff|size=2}}{{card|=1|background=#324|colour=#717|outlineColour=#fff|size=2}}{{card|=1|background=#324|colour=#717|outlineColour=#fff|size=2}}
 
|{{card|=2|background=#324|colour=#717|outlineColour=#fff|size=2}}{{card|=2|background=#324|colour=#717|outlineColour=#fff|size=2}}
=== Standard convention ===
|{{card|=3|background=#324|colour=#717|outlineColour=#fff|size=2}}{{card|=3|background=#324|colour=#717|outlineColour=#fff|size=2}}
 
|{{card|=4|background=#324|colour=#717|outlineColour=#fff|size=2}}{{card|=4|background=#324|colour=#717|outlineColour=#fff|size=2}}
Players assume:
|{{card|=5|background=#324|colour=#717|outlineColour=#fff|size=2}}
* Every marked card will be playable at some point.
|}
* The oldest, unmarked (chop) card is safe to discard.
* Cards known to be trash are discarded in priority ''e.g. cards marked blue when the blue stack is completed.''


==== Hard ====
==== Play clue ====


* These cards get marked by a separate '''multicolour clue'''.
* A clue that does not mark a (unique) chop card¹.
{|class="wikitable" style="width:auto;" border="2"
* Focus is the newest card.
|+Hard difficulty (+5 cards)
Priority:
!Multi-colour (m)
# Lead to plays in other hands.
|{{card|=1|background=#324|colour=#717|outlineColour=#fff|size=2}}
# Lower rank.
|{{card|=2|background=#324|colour=#717|outlineColour=#fff|size=2}}
|{{card|=3|background=#324|colour=#717|outlineColour=#fff|size=2}}
|{{card|=4|background=#324|colour=#717|outlineColour=#fff|size=2}}
|{{card|=5|background=#324|colour=#717|outlineColour=#fff|size=2}}
|}


==== Very Difficult ====
==== Save clue ====


* These cards get marked by '''any colour clue'''.
* A (number) clue that marks a (unique) chop card¹.
{|class="wikitable" style="width:auto;" border="2"
* Focus is the chop card.
|+Avalanche difficulty (+10 cards)
!Multi-colour (m)
|{{card|=1|background=#324|colour=#717|outlineColour=#fff|size=2}}{{card|=1|background=#324|colour=#717|outlineColour=#fff|size=2}}{{card|=1|background=#324|colour=#717|outlineColour=#fff|size=2}}
|{{card|=2|background=#324|colour=#717|outlineColour=#fff|size=2}}{{card|=2|background=#324|colour=#717|outlineColour=#fff|size=2}}
|{{card|=3|background=#324|colour=#717|outlineColour=#fff|size=2}}{{card|=3|background=#324|colour=#717|outlineColour=#fff|size=2}}
|{{card|=4|background=#324|colour=#717|outlineColour=#fff|size=2}}{{card|=4|background=#324|colour=#717|outlineColour=#fff|size=2}}
|{{card|=5|background=#324|colour=#717|outlineColour=#fff|size=2}}
|}


== Setup ==
¹''Exception: 2 player game with 2+ consecutive saves.''


* 8 clue tokens.
==== Fix clue ====
{|class="wikitable" style="width:auto;" border="2"
|+# cards dealt to each player
!# Players
!2
!3
!4
!5
|-
!# Cards (official rules)
|5
|5
|4
|4
|-
!# Cards (unofficial rules)
|6
|5
|4
|3
|}


== Game play ==
* A follow-up clue on the same hand as an initial play clue.
* Required to change the focus (and prevent a misfire).


Players take turns to either:
{{infoBoxes |maxWidth=650 |state=collapsed
|title1=Fix clue example 1
|body1={{Hr|2}} {{Hy|5}} {{Hg|5}} {{Hb|5}} {{Hw|5}}
{{cardholder|{{Hw|1}}{{Hw|1}}{{Hw|2}}{{Hr|4}} |Bob 🡲}}
{{cardholder|{{Hy|4}}{{Hr|5}}{{Hr|3}}{{Hw|3}} |Cathy 🡲}}


• Give a '''clue'''<br/>
* Cathy's {{Hr|3}} must play next.
• '''Play''' a card, or<br/>
* The focus of a 3 clue on its own will be {{Hw|3}} and the focus of a red  clue will be {{Hr|5}}.
• '''Discard''' a card
* Alice to Cathy: these 2 cards are red.


=== Clue ===
{{Hr|2}} {{Hy|5}} {{Hg|5}} {{Hb|5}} {{Hw|5}}
{{cardholder|{{Hw|1}}{{Hw|1}}{{Hw|2}}{{Hr|4}} |Bob 🡲}}
{{cardholder|{{Hy|4}}{{Hr|5|c=}}{{Hr|3|c=}}{{Hw|3}} |Cathy 🡲}}


* Possible when there is at least one clue token available.
* Bob to Cathy: these 2 cards are 3s - this fix clue changes the focus from {{Hr|5}} to {{Hr|3}} (now visible).
* Clues indicate '''all''' cards of a certain colour, or '''all''' cards of a certain number.
  you may indicate '''no''' cards of a color or number on BGA (you have no 5s, or you have no reds)
  you may not indicate only a single card of the matching criteria if there is more than one


To do this:
{{Hr|2}} {{Hy|5}} {{Hg|5}} {{Hb|5}} {{Hw|5}}
{{cardholder|{{Hw|1}}{{Hw|1}}{{Hw|2}}{{Hr|4}} |Bob 🡲}}
{{cardholder|{{Hy|4}}{{Hr|5|c=}}{{Hr|3|n=|c=}}{{Hw|3|n=}} |Cathy 🡲}}


1. The active player selects a card in another player's hand.<br/>
|title2=Fix clue example 2
2. The active player selects a clue option.<br/>
|body2={{Hr}} {{Hy|1}} {{Hg}} {{Hb}} {{Hw}} {{Hm}}
3. One clue token is moved from 'available' to 'used'.
{{cardholder|{{Hw|5}}{{Hy|4}}{{Hr|3}}{{Hg|5}} |Bob 🡲}}
{{cardholder|{{Hw|4}}{{Hg|4}}{{Hm|2}}{{Hy|2}} |Cathy 🡲}}


=== Play ===
* Avalanche of colors option is on, so multicolour cards are marked by '''any colour clue'''.
* Cathy's {{Hy|2}} should play before it is discarded.
* The focus of a 2 clue on its own will be {{Hm|2}} and the focus of a yellow  clue will also be {{Hm|2}}.


1. The active player selects a card in their hand.<br/>
* Alice to Cathy: these 2 cards are yellow.
2. The active player selects the 'Play selected card' button.<br/>
:• If the played card fits in any of the sequences, it is placed in the appropriate colour stack on the table.<br/>
:• If the played card does not fit, it is placed in the discard pile and the team gets a ''misfire'' token.<br/>
3. A replacement card is drawn.


=== Discard ===
{{Hr}} {{Hy|1}} {{Hg}} {{Hb}} {{Hw}} {{Hm}}
{{cardholder|{{Hw|5}}{{Hy|4}}{{Hr|3}}{{Hg|5}} |Bob 🡲}}
{{cardholder|{{Hw|4}}{{Hg|4}}{{Hm|2|{{y}}|1|1|c=}}{{Hy|2|c=}} |Cathy 🡲}}


This is only possible when there are fewer than 8 clue tokens available.
* Bob to Cathy: these 2 cards are 2s - this fix clue changes the focus from the left 2 to the other 2.


1. The active player selects a card in their hand.<br/>
{{Hr}} {{Hy|1}} {{Hg}} {{Hb}} {{Hw}} {{Hm}}
2. The active player selects the 'Discard selected card' button.<br/>
{{cardholder|{{Hw|5}}{{Hy|4}}{{Hr|3}}{{Hg|5}} |Bob 🡲}}
3. The discarded card is placed in the discard pile.<br/>
{{cardholder|{{Hw|4}}{{Hg|4}}{{Hm|2|{{y}}|1|1|n=|c=}}{{Hy|2|n=|c=}} |Cathy 🡲}}
4. One clue token is moved from 'used' to 'available'.<br/>
5. A replacement card is drawn.


== Game end ==
* ''Note: if a multicolour card is the intended target of a play clue, the clearest clue would be a colour that does not splash any other card.''
}}


* The game can end in several ways:
==== Bad clue ====
*1. All cards have been drawn from the deck. After this happens, everybody gets 1 more turn. The game ends with the score at the last turn.
*2. Your team played all possible cards. In this case, the game ends immediately and you receive the maximum possible score.
*3. Your team made three mistakes that caused misfires. In this case, you lose the game and get negative ten (-10) points.
*4. Your team 'abandons' the game. Although discouraged, you receive zero (0) points.


== Options ==
* Tell a lie ''e.g. a clue that marks {{Hr|2}} as playable without the required {{Hr|1}}.''
* Mark unknown trash or duplicate cards ''e.g. mark '''4'''s in another hand when your hand could have a copy of that '''4'''.''


=== Black Powder ===
{{infoBoxes |maxWidth=650
|title1=Standard convention: Play clue
|body1={{Hr|1}} {{Hy|5}} {{Hg|1}} {{Hb|3}} {{Hw|4}}
{{cardholder|{{Hr|2}}{{Hy|4}}{{Hr|3}}{{Hw|5|n=}} |Bob 🡲}}
{{cardholder|{{Hw|4}}{{Hy|1}}{{Hr|4}}{{Hr|3}} |Cathy 🡲}}


* Clues cannot be given for the colour black.
* Alice to Bob: these 2 cards are red.
* Black cards must be played in reverse order, from 5 to 1.
{|class="wikitable" style="width:auto;" border="2"
|+Black Powder (+10 cards)
!Black Powder (k)
|{{card|=5|background=#324|colour=#000|outlineColour=#fff|size=2}}{{card|=5|background=#324|colour=#000|outlineColour=#fff|size=2}}{{card|=5|background=#324|colour=#000|outlineColour=#fff|size=2}}
|{{card|=4|background=#324|colour=#000|outlineColour=#fff|size=2}}{{card|=4|background=#324|colour=#000|outlineColour=#fff|size=2}}
|{{card|=3|background=#324|colour=#000|outlineColour=#fff|size=2}}{{card|=3|background=#324|colour=#000|outlineColour=#fff|size=2}}
|{{card|=2|background=#324|colour=#000|outlineColour=#fff|size=2}}{{card|=2|background=#324|colour=#000|outlineColour=#fff|size=2}}
|{{card|=1|background=#324|colour=#000|outlineColour=#fff|size=2}}
|}


=== Five Flamboyants ===
{{Hr|1}} {{Hy|5}} {{Hg|1}} {{Hb|3}} {{Hw|4}}
{{cardholder|{{Hr|2|c=}}{{Hy|4}}{{Hr|3|c=}}{{Hw|5|n=}} |Bob 🡲}}
{{cardholder|{{Hw|4}}{{Hy|1}}{{Hr|4}}{{Hr|3}} |Cathy 🡲}}


After playing the last card of a colour, randomly select one of the following bonuses for immediate use:
* Bob now knows his newest card is the next playable in the sequence ({{Hr|2}}), and the other marked card is {{Hr|3}}, {{Hr|4}} or {{Hr|5}} (because every marked card will be playable at some point).
* Gain a clue token.
* Gain a clue token and recover a life.
* Give a clue regarding a colour.
* Give a clue regarding a number.
* Shuffle a discarded card into the deck.
* Play a discarded card, if possible.


== Lingo ==
|title2=Standard convention: Prompt
|body2={{Hr|2}} {{Hy|5}} {{Hg|1}} {{Hb|3}} {{Hw|4}}
{{cardholder|{{Hb|5}}{{Hy|4}}{{Hr|3|c=}}{{Hw|5|n=}} |Bob 🡲}}
{{cardholder|{{Hw|2}}{{Hw|4}}{{Hy|1}}{{Hr|4}} |Cathy 🡲}}


When you play with others, certain words are used to describe certain objects or situations. Here is a short list.
* Alice to Cathy: this card is red.


;Marked: A card that is highlighted by a clue.
{{Hr|2}} {{Hy|5}} {{Hg|1}} {{Hb|3}} {{Hw|4}}
;Unmarked: A card that is not clued.
{{cardholder|{{Hb|5}}{{Hy|4}}{{Hr|3|c=}}{{Hw|5|n=}} |Bob 🡲}}
;chop: The oldest, unmarked card. The card that you have no information on and will chop from your hand.
{{cardholder|{{Hw|2}}{{Hw|4}}{{Hy|1}}{{Hr|4|c=}} |Cathy 🡲}}
;draw: The newest, unmarked card. The card that you have no information on and was freshly drawn.
;To bomb: A play that causes the third misfire-token. Sometimes called '''explosion'''
;Unique: A card that has no copy (left) in the deck.
;Double discard: When consecutive players have the same card on chop. A special problem, since, to each of the consecutive players, a number to chop does not look like a unique save.
;Twin chop: 2 consecutive players have the same card on chop. Same as Double discard
;Double save: When a player has two consecutive unique cards, requiring consecutive save clues.
;Strategy: A set of rules / guidelines / conventions on how to interpret actions by players (including spending of clue-tokens).


== ELO rating ==
* Cathy now knows her marked card is the next playable in the sequence ⇨ {{Hr|4}}, because {{Hr|3}} is already marked.
* Bob now knows his marked red card is {{Hr|3}} and he must play it now.
}}


* If you are playing with ELO rating on, your ELO may be changed at the end of the game.
=== Finesse convention ===
* Here is how it works:
*1. Every player on the team is temporarily considered as having the average ELO rating of the team.
*2. The system will generate a bot associated with the score your team has achieved (let’s call it '''''Hanabot''''').
**• Hanabot’s ELO rating depends on the variant you are playing (50 cards, 60 cards, 60 cards multicolour), the number of players on the team and, most importantly, your team's score.
**• All Hanabot’s ELO ratings have been set by an experienced player, they are not random or simply proportional to the score/number of players.
*3. Your team (actually your team's average ELO) will now compete against Hanabot.
**• The system will calculate your team’s ELO gain/loss as though your team had tied with Hanabot.
**• If your score is below 18 (50-card game) or below 21 (60-card game), Hanabot's ELO is always 1000.


* You can find <b>[http://forum.boardgamearena.com/viewtopic.php?f=3&t=4814 all bots' ELO ratings here]</b>
Players assume:
* The 55-card variant (50 cards + 1 of each value in the sixth color) cannot be played with ELO rating on. (This is because this variant is highly dependent on draw and a team’s score may not always reflect the players’ skills.)
* Standard convention
* If you achieve the perfect score and this should cost you ELO points, you will be considered as having beaten the bot associated with the score, so that you lose no ELO points.
* Play clues may also include the '''newest, unmarked''' cards in every hand.
* To be confirmed: I think the ELO-system has had an overhaul.


== Cheating ==
{{infoBoxes3 |maxWidth=650
|title1=Finesse example
|body1={{Hr}} {{Hy}} {{Hg}} {{Hb}} {{Hw}}
{{cardholder|{{Hb|1}}{{Hr|5}}{{Hb|3}}{{Hw|1}} |Bob 🡲}}
{{cardholder|{{Hr|5}}{{Hr|2}}{{Hb|2}}{{Hg|2}} |Cathy 🡲}}


* Players can cheat at Hanabi by:
* Alice to Cathy: this card is blue.
**1. Sharing information via the chat user interface.
**2. Deliberately abandoning games.
* This is why ranking has been disabled for this game.


== Conventions ==
{{Hr}} {{Hy}} {{Hg}} {{Hb}} {{Hw}}
{{cardholder|{{Hb|1}}{{Hr|5}}{{Hb|3}}{{Hw|1}} |Bob 🡲}}
{{cardholder|{{Hr|5}}{{Hr|2}}{{Hb|2|c=}}{{Hg|2}} |Cathy 🡲}}


* If you want to play "full information" style, meaning that you wait until you know both the colour and number of a card before you play it, you will likely be short on clue tokens in >99% of the decks.
* Cathy now knows her marked card {{Hb|2}} is playable.
* The logical conclusion is that you cannot play a full information style game and the team must agree on some sort of meta-information. The meta-information is coded in a convention.
* Bob knows that Cathy will bomb her {{Hb|2}} as {{Hb|1}} unless a {{Hb|1}} is played first.
* Many players have different kinds of conventions.
* Bob does not see the connecting {{Hb|1}}, so assumes he has to play it now.
** ''Note: not all conventions are added to the BGA list. Please respect the convention the table creator wants to play.''
* Bob does not have a marked card that could be {{Hb|1}}, so Bob '''blind plays his newest unmarked card'''.
* When different players in the same team assign different meta-information to the same clue, the game becomes unplayable.
* {{Hb|1}} successfully plays.
** This is why there is an option to display the convention for the table.
** See '''[https://boardgamearena.com/forum/viewtopic.php?t=26863 this forum post]''' started by '''[https://boardgamearena.com/player?id=84207926 user Romain672]'''.
* Ideally, all players adhere to the convention, to avoid miscommunication.
* Below, the meta-information of several conventions is explained.


=== Standard ===
|title2=Reversed finesse example
|body2={{Hr}} {{Hy}} {{Hg}} {{Hb}} {{Hw}}
{{cardholder|{{Hr|5}}{{Hr|2}}{{Hb|2}}{{Hg|2}} |Bob 🡲}}
{{cardholder|{{Hb|1}}{{Hr|5}}{{Hb|3}}{{Hw|1}} |Cathy 🡲}}


* Players assume the following meta-information:
* Alice to Bob: this card is blue.
** Every marked card will be playable at some point.


==== Number clue ====
{{Hr}} {{Hy}} {{Hg}} {{Hb}} {{Hw}}
{{cardholder|{{Hr|5}}{{Hr|2}}{{Hb|2|c=}}{{Hg|2}} |Bob 🡲}}
{{cardholder|{{Hb|1}}{{Hr|5}}{{Hb|3}}{{Hw|1}} |Cathy 🡲}}


* Cards with a number-clue on them must be saved to be played later on in the game
* Bob now knows his marked {{Hb|2}} is playable.
* Saved cards can be safely played when all "number-1" cards are played.
* Bob sees the newest, unmarked card in Cathy's hand is of the same colour '''and''' playable now. Bob assumes it is a finesse with the players in reversed order and his blue card is {{Hb|2}}.
** ''Saved cards are played from oldest to newest.''


==== Colour clue ====
|title3=Bluff example
|body3=
{{Hr}} {{Hy}} {{Hg}} {{Hb}} {{Hw}}
{{cardholder|{{Hw|1}}{{Hr|5}}{{Hb|3}}{{Hw|1}} |Bob 🡲}}
{{cardholder|{{Hr|5}}{{Hr|2}}{{Hb|2}}{{Hg|2}} |Cathy 🡲}}


* The newest, previously unmarked card, is the next playable card in the sequence.
* Alice to Cathy: this card is blue.
* The oldest, unmarked card is safe to discard.
** If a player has a card that they are sure they will never be able to play, e.g. cards marked by a blue clue when the blue stack is already complete, these card must be discarded in priority.


==== Bad clues ====
{{Hr}} {{Hy}} {{Hg}} {{Hb}} {{Hw}}
{{cardholder|{{Hw|1}}{{Hr|5}}{{Hb|3}}{{Hw|1}} |Bob 🡲}}
{{cardholder|{{Hr|5}}{{Hr|2}}{{Hb|2|c=}}{{Hg|2}} |Cathy 🡲}}


* A clue that marks 0 new cards.
* Cathy now knows her marked card {{Hb|2}} is playable.
* A clue that tells a ''lie'' (i.e. does not conform to the meta-information above).
* Bob does not see the connecting {{Hb|1}}, so assumes he has to play it now.
* A clue that marks unplayable or duplicate cards, unless it saves a card at the chop position that does not have another copy of the card in the deck or other players' hands.
* Bob does not have a marked card that could be {{Hb|1}}, so Bob '''blind plays his newest unmarked card'''.
** e.g. Marking 4s in another hand if your hand could have a copy of that 4.
* {{Hw|1}} successfully plays and the bluff is revealed.
* Sometimes, a "bad" clue cannot be avoided.
* Before Bob played, Cathy thought her marked card was {{Hb|1}}.
** ''e.g. Save a unique 3 using a number clue which also marks unplayable cards.
* After Bob plays, Cathy knows her marked card is another valuable blue card.
** ''e.g. A colour clue from a flamboyant must be used and it is used to mark 0 new cards.
All conventions interpret Cathy's card as a valuable, not-yet-playable blue card.
* When a ''lie'' has been told, it needs to be corrected.
* A correction clue can never mean "play", it can only mean "discard".


{{infoBoxes3 |maxWidth=625
Some interpretations are more stringent, also must be a ''1-away-from-playable'' {{Hb|2}}.
|title1=Standard convention example 1
|body1=<div style="display:flex;flex-flow:row wrap;gap:1rem;">
{{cardholder|player=Table|arrow=|cardBackground=#324
|card1=1|card1Colour=red
|card2=5|card2Colour=yellow
|card3=1|card3Colour=lightgreen
|card4=3|card4Colour=deepskyblue
|card5=4|card5Colour=white
}}
}}


{{cardholder|player=Amy|cardBackground=#bbb}}
=== Marked card discard ===
 
If a non-trash marked card is discarded it means:
* A copy of that card is already marked in someone else's hand (''sarcastic discard''); or
* A copy of that card must be marked in a future save clue (use with caution); or
* An unmarked copy of that card is playable (''gentleman's discard'')
 
=== Definitions ===
 
<div style="columns:20rem auto;column-gap:2rem;">
==== <span style="color:{{r}};font:700 larger cursive;">Basic</span> ====
 
'''Convention''': Agreed set of clue, play and discard interpretations. ''e.g. a number clue that marks the chop card should be interpreted as a unique card save (if there is a unique card of that number).''
 
'''Strategy''': Plan to achieve the highest score. ''e.g. to mark first copies of cards.''
 
'''Marked''': A card touched by a clue.
 
'''Focus''': The target card of a clue.


{{cardholder|player=Bob|cardBackground=#324
'''Play clue''': Clue that marks a focused card to play.
|clue5=5|clue5Colour=lightgrey


|card1=2|card1Colour=red
'''Playable''': A card that can be marked by a play clue.
|card2=4|card2Colour=yellow
 
|card3=3|card3Colour=red
'''Trash''': A card that can never be played successfully.
|card4=3|card4Colour=deepskyblue
 
|card5=5|card5Colour=lightgreen
'''Bomb''': A play that causes a misfire.
}}
 
'''Draw''': The newest card in a hand.


{{cardholder|player=Cat|cardBackground=#324
'''Chop''': The oldest, unmarked card in a hand.
|card1=4|card1Colour=lightgreen
|card2=1|card2Colour=yellow
|card3=4|card3Colour=red
|card4=3|card4Colour=yellow
|card5=2|card5Colour=yellow
}}
</div>


'''Unique''': The last remaining card of its rank and colour (that can be played successfully at some point).


* It's Amy's turn, and Bob knows his chop card is {{card|=5}}.
'''Save''': A (number) clue that marks a chop card to prevent discard.
* Amy will give a red {{card|background=red}} clue to Bob.
* This will tell Bob that the newest card is the next playable in the sequence (so must be {{card|=2|background=#324|colour=red|size=1.5}}), and that the other red can be {{card|=3|background=#324|colour=red|size=1.5}}, {{card|=4|background=#324|colour=red|size=1.5}}, or {{card|=5|background=#324|colour=red|size=1.5}} (because it must be playable at some later point in the game).


|title2=Standard convention example 2
'''Prompt''': A play clue that causes connecting marked card(s) to play.
|body2=<div style="display:flex;flex-flow:row wrap;gap:1rem;">
{{cardholder|player=Table|arrow=|cardBackground=#324
|card1=2|card1Colour=red
|card2=5|card2Colour=yellow
|card3=1|card3Colour=lightgreen
|card4=3|card4Colour=deepskyblue
|card5=4|card5Colour=white
}}


{{cardholder|player=Amy|cardBackground=#bbb}}
==== ''<span style="color:{{g}};font:700 larger cursive;">Intermediate</span>'' ====


{{cardholder|player=Bob|cardBackground=#324
'''Good Touch Principle''': All marked cards will eventually be played.
|clue5=5|clue5Colour=lightgrey
|clue3Colour=red


|card1=5|card1Colour=white
'''Splash''': Additional new colour or rank information of cards that are not the focus.
|card2=4|card2Colour=yellow
|card3=3|card3Colour=red
|card4=3|card4Colour=deepskyblue
|card5=5|card5Colour=lightgreen
}}


{{cardholder|player=Cat|cardBackground=#324
'''Locked''': A hand with all cards marked without any plays.
|card1=2|card1Colour=white
|card2=4|card2Colour=lightgreen
|card3=1|card3Colour=yellow
|card4=4|card4Colour=red
|card5=3|card5Colour=yellow
}}
</div>


'''Reclue''': A repeated clue that causes marked card(s) to play.


* It is Amy's turn again, and Bob knows his oldest card is {{card|=5}}, and his middle card is {{card|background=red}}.
'''Fix clue''': Follow-up clue required to change the focus of a play clue (and prevent a misfire).
* Amy will give a red {{card|background=red}} clue to Cat.
* This will tell Cat that her marked card is the next playable in the sequence (so must be {{card|=4|background=#324|colour=red|size=1.5}}, because {{card|=3|background=#324|colour=red|size=1.5}} is already marked).
* This will give Bob the meta-information that his saved red card, is {{card|=3|background=#324|colour=red|size=1.5}}.
** ''This particular move is sometimes called prompting, and is a common way to allow a card that is saved by colour to get played without re-cluing it.''


|title3=Standard convention example 3
'''Discard clue''': Clue that marks trash card(s) to be discarded (to prevent a misfire or unwanted discard).
|body3=<div style="display:flex;flex-flow:row wrap;gap:1rem;">
{{cardholder|player=Table|arrow=|cardBackground=#324
|card1=1|card1Colour=red
|card2=5|card2Colour=yellow
|card3Background=lightgreen
|card4=3|card4Colour=deepskyblue
|card5=4|card5Colour=white
}}


{{cardholder|player=Amy|cardBackground=#bbb}}
'''Stall clue''': A clue given to avoid discarding.


{{cardholder|player=Bob|cardBackground=#324
'''Finesse''': A play clue that causes connecting unmarked card(s) to play.
|clue3=2|clue3Colour=lightgrey


|card1=3|card1Colour=red
'''Bluff''': A play clue that causes a non-connecting unmarked card to play immediately.
|card2=4|card2Colour=yellow
|card3=2|card3Colour=red
|card4=3|card4Colour=deepskyblue
|card5=5|card5Colour=lightgreen
}}


{{cardholder|player=Cat|cardBackground=#324
'''Bluff seat''': The player directly before the player who is bluffed.
|card1=4|card1Colour=lightgreen
|card2=1|card2Colour=yellow
|card3=4|card3Colour=red
|card4=3|card4Colour=yellow
|card5=2|card5Colour=yellow
}}
</div>


'''Bottom-decked''': When the remaining copy of a playable card is too near the bottom of the deck to achieve a perfect score.


* It is Amy's turn, and Bob knows his middle card is {{card|=2}}.
'''Early save''': A save clue with a known playable card in the same hand, or does not mark the chop card¹. ''i.e. a play clue.''
* Amy will give a red {{card|background=#d03}} clue to Bob.
* This will tell Bob that his newest card is the next playable in the sequence (so must be {{card|=3|background=#324|colour=#d03|size=1.5}}, because {{card|=2|background=#324|colour=#d03|size=1.5}} is now visible with 100% information).
}}


=== Finesse ===
'''Double save''': Two consecutive saves in the same hand.


* Finesse builds on the standard convention (making it a bit more complex).
'''Double discard''': Two consecutive players discard copies of the same chop card, resulting in a unique discard. ''A special problem, since, to each of the consecutive players, a number clue that marks their chop card does not look like a save clue (and therefore looks like a play clue).''
* In the finesse convention, the timing of the clue gives you extra information.
* You can assume the following meta-information:
** Every card that gets marked, will be playable at some point.
** If the oldest, unmarked card gets marked with a number-clue, then the clue meant "save this/these card(s)". (It is custom to play saved cards from oldest to newest when appropriate.)
** A clue that doesn't mark the oldest card, means that the newest, previously unmarked card, is the next playable card in the sequence.
** The oldest, unmarked card is safe to discard unless that player is busy by having a "known" play or discard.
*** ''Obviously, if a player has a card that they are sure they will never be able to play, for example a card on which is marked as 1 when all the 1s have already been played, should be discarded in priority.''
** Clues are given by the last possible player.
*** When the timing of a clue doesn't match your expectations, you can draw certain conclusions (see next section: special interpretations)


==== Special interpretations ====
'''Sarcastic discard''': Discard of a duplicate marked copy of a card in another hand.


* When receiving a clue for the "next playable card in the sequence", the linking cards are not limited to already marked cards (like in standard convention).
'''Skip''' / '''steal''': When a player gives a clue that could have been given by one of the skipped players.
* The newest, unmarked cards in every player's hand should be considered as well.


{{infoBoxes3 |maxWidth=625
'''Scream discard''': An unexpected discard to save a unique card in another hand.
|title1=Example of finesse
|body1=<div style="display:flex;flex-flow:row wrap;gap:1rem;">
{{cardholder|player=Table|arrow=
|card1Background=red
|card2Background=yellow
|card3Background=lightgreen
|card4Background=deepskyblue
|card5Background=white
}}


{{cardholder|player=Amy|cardBackground=#bbb}}
==== ''<span style="color:{{m}};font:700 larger cursive;">Advanced</span>'' ====


{{cardholder|player=Bob|cardBackground=#324
'''Long finesse''': A finesse of three or more cards lasting more than one complete round.
|card1=1|card1Colour=deepskyblue
|card2=5|card2Colour=yellow
|card3=3|card3Colour=deepskyblue
|card4=1|card4Colour=white
|card5=2|card5Colour=white
}}


{{cardholder|player=Cat|cardBackground=#324
'''Layered finesse''': A finesse with unrelated playable card(s) in front of the target card(s).
|clue3Colour=deepskyblue


|card1=5|card1Colour=red
'''Scream play''': An unexpected chop play to save a unique card in another hand.
|card2=2|card2Colour=red
|card3=2|card3Colour=deepskyblue
|card4=2|card4Colour=lightgreen
|card5=2|card5Colour=yellow
}}
</div>


'''Clued misplay''': A play clue that causes a misfire to prevent a unique discard in the same hand.


* Amy gives a blue {{card|background=deepskyblue}} to Cat.
'''Positional misplay''': An unexpected play that marks the same slot position in another hand to play immediately.
* This gives the information that {{card|=2|background=#324|colour=deepskyblue|size=1.5}} is the next playable card in the sequence, and that Bob is either not allowed to give a blue {{card|background=deepskyblue}} clue, or has something to play.
* Since Bob has no marked cards, he was not blocked from giving a blue {{card|background=deepskyblue}} clue, so he must have something to play.
* This something, must be the missing link ({{card|=1|background=#324|colour=deepskyblue|size=1.5}}, to enable {{card|=2|background=#324|colour=deepskyblue|size=1.5}}) that makes {{card|=2|background=#324|colour=deepskyblue|size=1.5}} the next playable card.
* Since there is no logical (marked) card that could be {{card|=1|background=#324|colour=deepskyblue|size=1.5}}, Bob must assume his newest, unmarked card is {{card|=1|background=#324|colour=deepskyblue|size=1.5}} and blind-plays this card.


|title2=Example of reversed finesse
'''Gentleman's discard''': Discard of a playable card to play an unmarked copy in another hand.
|body2=<div style="display:flex;flex-flow:row wrap;gap:1rem;">
{{cardholder|player=Table|arrow=
|card1Background=red
|card2Background=yellow
|card3Background=lightgreen
|card4Background=deepskyblue
|card5Background=white
}}


{{cardholder|player=Amy|cardBackground=#bbb}}
'''Play refusal''': Instead of playing, a player clues or discards their '''chop'''.


{{cardholder|player=Bob|cardBackground=#324
'''Hesitation play''': After a play refusal of a playable card, another player may be able to blind play an unmarked card.
|clue3Colour=deepskyblue


|card1=5|card1Colour=red
'''Generation discard''': An unexpected discard to gain {{Hclue|1}}.
|card2=2|card2Colour=red
|card3=2|card3Colour=deepskyblue
|card4=2|card4Colour=lightgreen
|card5=2|card5Colour=yellow
}}


{{cardholder|player=Cat|cardBackground=#324
|card1=1|card1Colour=deepskyblue
|card2=5|card2Colour=yellow
|card3=3|card3Colour=deepskyblue
|card4=1|card4Colour=white
|card5=2|card5Colour=white
}}
</div>
</div>


== Options ==
=== Colors ===
==== Normal: 5 colors ====
{|class="wikitable" style="width:auto;" border="2"
|+50 cards
!Red (r)
|{{Hr|1}}{{Hr|1}}{{Hr|1}}
|{{Hr|2}}{{Hr|2}}
|{{Hr|3}}{{Hr|3}}
|{{Hr|4}}{{Hr|4}}
|{{Hr|5}}
|-
!Yellow (y)
|{{Hy|1}}{{Hy|1}}{{Hy|1}}
|{{Hy|2}}{{Hy|2}}
|{{Hy|3}}{{Hy|3}}
|{{Hy|4}}{{Hy|4}}
|{{Hy|5}}
|-
!Green (g)
|{{Hg|1}}{{Hg|1}}{{Hg|1}}
|{{Hg|2}}{{Hg|2}}
|{{Hg|3}}{{Hg|3}}
|{{Hg|4}}{{Hg|4}}
|{{Hg|5}}
|-
!Blue (b)
|{{Hb|1}}{{Hb|1}}{{Hb|1}}
|{{Hb|2}}{{Hb|2}}
|{{Hb|3}}{{Hb|3}}
|{{Hb|4}}{{Hb|4}}
|{{Hb|5}}
|-
!White (w)
|{{Hw|1}}{{Hw|1}}{{Hw|1}}
|{{Hw|2}}{{Hw|2}}
|{{Hw|3}}{{Hw|3}}
|{{Hw|4}}{{Hw|4}}
|{{Hw|5}}
|}
==== Tricky: 6th color (10 cards) ====


* Amy gives a blue {{card|background=deepskyblue}} clue to Bob.
* These cards are marked by a separate ''multicolour'' clue.
* This gives the information that {{card|=2|background=#324|colour=deepskyblue|size=1.5}} is the next playable card in the sequence.
{|class="wikitable" style="width:auto;" border="2"
* Bob sees that the newest, unmarked card in Cat's hand is of the same colour (blue) '''and''' playable now. Bob concludes it is a finesse, with the players in reversed order, so his blue card must be {{card|=2|background=#324|colour=deepskyblue|size=1.5}}.
|++10 cards
!Multicolour (m)
|{{Hm|1}}{{Hm|1}}{{Hm|1}}
|{{Hm|2}}{{Hm|2}}
|{{Hm|3}}{{Hm|3}}
|{{Hm|4}}{{Hm|4}}
|{{Hm|5}}
|}


|title3=Example of a bluff
==== Difficult: 6th color (5 cards) ====
|body3=<div style="display:flex;flex-flow:row wrap;gap:1rem;">
{{cardholder|player=Table|arrow=
|card1Background=red
|card2Background=yellow
|card3Background=lightgreen
|card4Background=deepskyblue
|card5Background=white
}}


{{cardholder|player=Amy|cardBackground=#bbb}}
* These cards are marked by a separate ''multicolour'' clue.
{|class="wikitable" style="width:auto;" border="2"
|++5 cards
!Multicolour (m)
|{{Hm|1}}
|{{Hm|2}}
|{{Hm|3}}
|{{Hm|4}}
|{{Hm|5}}
|}


{{cardholder|player=Bob|cardBackground=#324
==== Avalanche of Colors: Multicolor (10 multicolor) ====
|card1=1|card1Colour=white
|card2=5|card2Colour=yellow
|card3=3|card3Colour=deepskyblue
|card4=1|card4Colour=white
|card5=2|card5Colour=white
}}


{{cardholder|player=Cat|cardBackground=#324
* These cards are marked by '''any colour clue'''.
|clue3Colour=deepskyblue
{|class="wikitable" style="width:auto;" border="2"
|++10 cards
!Multicolour (m)
|{{Hm|1}}{{Hm|1}}{{Hm|1}}
|{{Hm|2}}{{Hm|2}}
|{{Hm|3}}{{Hm|3}}
|{{Hm|4}}{{Hm|4}}
|{{Hm|5}}
|}


|card1=5|card1Colour=red
=== Black Powder ===
|card2=2|card2Colour=red
|card3=2|card3Colour=deepskyblue
|card4=2|card4Colour=lightgreen
|card5=2|card5Colour=yellow
}}
</div>


* Clues cannot be given for the colour black.
* Black cards must be played in '''reverse order''' 5 ⇨ 4 ⇨ 3 ⇨ 2 ⇨ 1.
{|class="wikitable" style="width:auto;" border="2"
|++10 cards
!Black Powder (p/k)
|{{Hk|5}}{{Hk|5}}{{Hk|5}}
|{{Hk|4}}{{Hk|4}}
|{{Hk|3}}{{Hk|3}}
|{{Hk|2}}{{Hk|2}}
|{{Hk|1}}
|}


* Amy gives a blue {{card|background=deepskyblue}} clue to Cat.
=== 5 flamboyants ===
* This gives the information that {{card|=2|background=#324|colour=deepskyblue|size=1.5}} is the next playable card in the sequence, and that Bob is either not allowed to give a blue {{card|background=deepskyblue}} clue, or has something to play.
* Since Bob has no marked cards, he was not blocked from giving a blue {{card|background=deepskyblue}} clue, so he must have something to play.
* This something, must be the missing link ({{card|=1|background=#324|colour=deepskyblue|size=1.5}}, to enable {{card|=2|background=#324|colour=deepskyblue|size=1.5}}) that makes {{card|=2|background=#324|colour=deepskyblue|size=1.5}} the next playable card.
* Since there is no logical (marked) card that could be {{card|=1|background=#324|colour=deepskyblue|size=1.5}}, Bob must assume his newest, unmarked card is {{card|=1|background=#324|colour=deepskyblue|size=1.5}} and blind-plays this card.
* However, at this point the "lie" is revealed (because the colour of the played card does '''not''' match the colour of the finesse-clue).
* The blind-played card is '''not''' {{card|=1|background=#324|colour=deepskyblue|size=1.5}}, but {{card|=1|background=#324|colour=white|size=1.5}}. Cat, up to this point, was thinking she had {{card|=1|background=#324|colour=deepskyblue|size=1.5}}.
* Bob's blind-play gives Cat extra information: her blue card is in fact {{card|=2|background=#324|colour=deepskyblue|size=1.5}}.
}}


* If a marked card gets discarded it means:
After playing the last card of a colour, randomly draw a bonus card and apply its effect:
** The copy of that card is already marked in someone else's hand, and the discarding player is the first to realize this; or
# Gain {{Hclue|1|size=1.2}}
** The copy of that card MUST be marked in a future clue (because a save-clue will be given that will mark the copy card as collateral).
# Gain {{Hclue|1|size=1.2}} and recover a life.
# Give a colour clue.
# Give a number clue.
# Shuffle a discarded card into the deck ''(optional)''.
# Play a discarded card ''(optional)''.


==== Clues you should avoid giving (bad clues) ====
=== Convention used ===


* As a special remark: don't mark useless, or duplicate cards. So if you have a saved 4, you are forbidden from marking 4s, unless you are sure you are not holding a copy of that
{|class="wikitable" style="width:auto;" border="2"
!Name
!Summary
!References
|-
|'''Standard'''
|BGA convention without blind-plays.
|Standard convention above


==== Meaning of skipping a player / stealing clues in Finesse convention ====
[https://docs.google.com/document/d/1VzgN6WoeYwh5NYtHECzUNZqFvpVcg-EdObU-YNMlyhc Hanabi "reference" for bga]
|-
|'''Finesse'''
|BGA convention with blind-plays.
|Finesse convention above


* There are different approaches among finesse-convention-players about who should clue whom. So this section will be devided into sub-sections. The order does not say anything about which approach is more common on BGA. There are a lot of players following each idea.
[https://docs.google.com/document/d/1VzgN6WoeYwh5NYtHECzUNZqFvpVcg-EdObU-YNMlyhc Hanabi "reference" for bga]
* If you allow for skipping (without assigning information to it), a lot of potential information is destroyed. Note that some players are religious in their beliefs about their interpretation on convention, so this section gets re-edited over and over.
|-
To summarize what we already know about finesse convention:
|'''Hat-guessing'''
1. Ever marked card will be playable at some point.
|Clues relate to slot position, not the cards marked.
2. A number-clue that marks the CHOP card is a "save this for later"-clue.
|[https://github.com/hanabi/hanabi.github.io/blob/main/misc/hat-guessing.md H-Group]
3. Every other clue means: the newest, previously unmarked card, is the next playable card.
4. If you have no known playable card (or known safe-to-discard card), your CHOP card is safe to discard.
5. A clue is given by the last possible player.


* The text within the sections are written by people who follow the idea.
[https://github.com/fpvandoorn/hanabi/blob/master/doc_hat_player.md Robert Kaspar]


===== a) Skipping / stealing should be avoided =====
[https://github.com/hanabi/hanabi.github.io/blob/main/misc/empty-clues.md H-Group empty clues]
|-
|'''Logical Leftism'''
|No convention, just logic.
|[http://hanabilogic.eklablog.com/basics-level-1-a117610126 hanabi logic]
|-
|'''Closest Friend'''
|Clue interpretation depends on which player gave the clue.
|[https://github.com/hanabi/hanabi.github.io/blob/main/pdf/newest-friend.pdf H-Group]
|-
|'''Secret convention'''
|Each player randomly selects a secret '''[https://perchance.org/e6dtm5lj3r restriction]'''.
|[https://boardgamearena.com/forum/viewtopic.php?t=26863 Secret variant]


* If more than 1 person are able to give the same clue, then the last possible person should give that clue.
[https://boardgamearena.com/forum/viewtopic.php?p=71264#p71264 Secret hanabi restriction]
* In finesse convention skipping (Alice clues Cat, instead of Bob; then Bob is skipped) means either:
|-
**1. The Bob is forbidden from giving that clue; or
|'''Conventional Leftism'''
**2. The Bob has something to play.
|Same as Standard.
* Note that skipping a player to give a save-clue (number-clue on the CHOP card) is NOT a finesse, and can (should) be used
|[http://hanabilogic.eklablog.com/no-conventional-leftism-a117757604 hanabi logic]
** to save "nice-to-have" cards;
[https://docs.google.com/document/d/1sz3if8-9JJDAcbvdi3MHEAv9L5ljyHHnTSEACKk5RUY/edit#heading=h.q88fl7o62h8c Postmans]
** to save one of the twin-CHOP cards;
|-
** to speed up the discard of useless cards.
|'''Chop-focus'''
* Things that people who follow this convention say about discard management:
|The focus of a clue that marks a chop card is always the chop card.
** The main problem with this interpretation, is that "discard management" destroys the assumption that your CHOP is safe to discard, making the convention contradict itself. There is no reason for Alice to avoid discarding her safe-to-discard CHOP card, just because she sees a safe-to-discard card in Bob's hand.
|[https://hanabi.github.io/docs/beginner/single-card-focus#determining-the-focus-4-steps H-Group]
** When applying this style of finesse convention, you assume that players use a bad strategy (see section [[Gamehelphanabi#Strategy|Strategy]]) of not-saving-valuable cards. Your CHOP card might be not-unique, but nice-to-have (not playable, but almost playable). So to avoid discarding a nice-to-have card, you force people into discarding by skipping them, and leaving them without anything useful to do. Skipping/stealing is a term that is often used for a situation, where giving a clue is not left for the last possible player to do. ''e.g. Alice saves a card on chop of Cat, potentially leaving Bob without a known play or a useful/necessary clue to give.'' Skipping players is a useful move to give other players the time to play / discard / clue more cards.
|}


===== b) Skipping / stealing is for discard-management =====
=== Preset deck ===


If you don't follow this way of playing then refrain from editing this section! You can write in the section with the convention you follow, why yours is the best.
Preset decks are useful for comparing teams/conventions using the same deck:
* No (cards are shuffled)
* Preset deck #1 of the day
* Preset deck #2 of the day
* Preset deck #3 of the day
* Preset deck #4 of the day
* Preset deck #5 of the day
Preset decks are changed at [https://boardgamearena.com/forum/viewtopic.php?p=48600#p48600 0:00 (?)] UTC


This style is one way of applying finesse convention. Since the primary assumption is that your CHOP is safe to discard, it might still be that said card is a nice-to-have like a non-unique 2 or 3 that is not yet playable. without knowing your chop card, it is good to handle each-other's chop situation by preferably letting players with definitely useless chop-cards discard rather than discarding your own unknown card. Skipping/stealing is a term that is often used for a situation, where giving a clue is not left for the last possible player to do. ''e.g. player A saves a card on chop of player C, potentially leaving player B without a known play or a useful/necessary clue to give.'' Skipping players is a useful move to give other players the time to play / discard / clue more cards.
=== Unofficial variant ===


When getting skipped without having a play or useful option to clue, it most likely means that your chop card is not very useful.
{|class="wikitable" style="width:auto;" border="2"
These are valid reasons for skipping you:
|+Deal
* Your chop-card is trash (a copy of the card is already played/marked)
!# Players
* Your chop-card is redundant: Another copy of it is on another player's (or your own) hand as well, so discarding it is no loss (or it has low priority like a high number when it's very early in the game).
!2
* You might still have something nice on chop, but the player sitting before already received information that their chop might be something very good (from earlier discard-behaviour like NOT being skipped over by the player sitting before them on earlier turns) and they are reluctant to discard for that reason.
!3
* The clue given is a play-clue for a card that might be in your hand so you couldn't know whether you want the other card or not. The player skipping you knows that you want it and therefore takes away the decision.
!4
!5
|-
!# Cards
|'''6'''
|5
|4
|'''3'''
|}


This approach sacrifices some saving-clue-tokens option (that might be achieved on a stricter dogma about who should clue whom) in order to be able to keep nice cards in the game for longer and discard useless cards instead and by that often get those cards played before they would be discarded.
== ELO rating ==
* This convention is better for players, who play efficient enough to rarely struggle with clue-shortness and can therefore afford being more careful about not losing first copies.
* If a group often struggles with clue-shortness then skipping-dogma (as proposed by other conventions) might as well improve their overall results. If the problem for not achieving 30 points usually isn't clue-shortness but getting bottom-decked (or heavily delayed from losing earlier a card that could be played now), then results can get better with this discard-management convention.


Planning ahead is a vital aspect of the game. By carefully deciding on who to let clue and whom to skip, it is often possible to
'''[https://forum.boardgamearena.com/viewtopic.php?t=33785 Rating is visibly hidden around tables]''' with the 7 distinct ELO skill levels:
* avoid twin-chops before they become an issue
: {{Beginner}} {{Apprentice}} {{Average}} {{Good}} {{Strong}} {{Expert}} {{Master}}.
* avoid not having enough clue tokens to save all necessary cards
* get the discard you were waiting for (when a player has 2 copies of the same playable card and you want them to discard before clueing it)


=== Others conventions ===
# '''''Hanabot''''''s ELO is generated from:
#* Final score¹
#* Average team ELO
#* Colour option²
# ELO change is calculated as if tied with Hanabot.


* For others conventions, see the previous link: '''[https://boardgamearena.com/forum/viewtopic.php?t=26863 this forum post]'''
'''''[https://forum.boardgamearena.com/viewtopic.php?f=3&t=4814 Hanabots' ELO ratings]''' were set by an experienced player - i.e. ratings are not random or simply proportional to score or players' ELO.''


== Strategy ==
¹''Hanabot's ELO = 0 with scores < 18 (5 colours) and < 21 (6 colours).''


* In addition to the convention(s), there is also some strategy to the game.
²''+5 card multicolor option is unrated (too dependent on draw to reflect skill).''
* You should '''not''' confuse strategy with convention! Strategy is '''team''' vs '''deck'''; convention is communication within the team.
* A simple example of strategy is saving 2s in 2-player games.
** Using number-2-clue to communicate that those cards need to be saved, is a convention.


=== Examples ===
== Cheating ==


* More advanced players will try to avoid losing as many "first" (non-unique) cards as possible.
* Players can cheat at Hanabi by sharing information via the chat user interface. This is why ranking has been disabled for this game.
* It's a good strategy to keep good cards in the game as long as possible - even if they are not yet playable.
** ''The other copy of that card might be far down the draw pile.''
* Trying to mark at least 12 cards with the first 8 clue-tokens.
** This gives 99% chance of always having enough tokens in the game.
* Not using the last two clue-tokens for "single plays".
** This avoids running out of clue-tokens in times when you need to save critical cards.


[[Category:Card games]]
[[Category:Card games]]

Latest revision as of 00:01, 27 September 2024

Overview

  • Hanabi is a cooperative game. Your goal, as a team, is to build a fabulous fireworks show.
  • You have to put together fireworks by playing each individual colour (red, yellow, green, blue and white) in series (1 ⇨ 2 ⇨ 3 ⇨ 4 ⇨ 5).
  • Each colour in the deck has 111, 22, 33, 44, 5.
  • You cannot see your own cards; you can only see the cards of your teammates.
  • You can only communicate with your teammates via clues, playing and discarding cards (see below).
  • No other communication is allowed.
Final Score Ratings
Points Overall impression
0-5 horrible, booed by the crowd...
6-10 mediocre, just a spattering of applause.
11-15 honourable, but will not be remembered for very long...
16-20 excellent, crowd pleasing.
21-24 amazing, will be remembered for a very long time!
25-29 legendary, everyone left speechless, stars in their eyes!
30 Divine, the display outshines the stars!

Note: 25 is the maximum score with Normal: 5 colors.

Setup

Deal
# Players 2-3 4-5
# Cards 5 4

8clue tokens clue tokens

Game play

Players take turns to either:

  • Give a clue
  • Play a card, or
  • Discard a card

Clue

Possible with at least 1clue tokens available:

  • All cards of a colour, or
  • All cards of a number, or
  • No cards of a colour, e.g. "Player1 to Player2: you have no red card" or
  • No cards of a number e.g. "Player1 to Player2: you have no 5"
  1. The active player selects a card in another player's hand.
  2. The active player selects a clue option.
  3. 1clue tokens is moved from 'available' to 'used'.

Play

  1. The active player selects a card in their hand.
  2. The active player selects the 'Play selected card' button.
    • If the played card fits in any of the sequences, it is placed in the appropriate colour stack on the table.
    • If the played card does not fit, it is placed in the discard pile and the team gets a misfire token.
  3. A replacement card is drawn.

Discard

Possible with fewer than 8clue tokens available:

  1. The active player selects a card in their hand.
  2. The active player selects the 'Discard selected card' button.
  3. The discarded card is placed in the discard pile.
  4. 1clue tokens is moved from 'used' to 'available'.
  5. A replacement card is drawn.

Game end

The game can end in several ways:

  • All cards have been drawn from the deck. After this happens, each player has one more turn. The game ends with the score after the last turn.
  • Your team played all possible cards. In this case, the game ends immediately.
  • Your team made three mistakes that caused misfires. In this case, all players lose the game and receive -10 ELO points.
  • Your team concedes the game. All players receive -10 ELO points.
  • A player quits the game. Only the player that quit first receives -10 ELO points. All other players' ELO is unchanged.

Conventions

  • There are not enough ​clue tokens to clue both colour and number of every played card, so the team must agree on a set of clue, play and discard interpretations, known as a convention.
  • Many players use different conventions and if teammates have very different clue interpretations, the game becomes unsuccessful.
  • Read about some of the most common conventions in this forum post by Romain672.

Note: the BGA list of conventions does not cover all conventions, so please respect the convention the table creator wants to play. This is why there is an option to display the convention for the table.

Standard convention

Players assume:

  • Every marked card will be playable at some point.
  • The oldest, unmarked (chop) card is safe to discard.
  • Cards known to be trash are discarded in priority e.g. cards marked blue when the blue stack is completed.

Play clue

  • A clue that does not mark a (unique) chop card¹.
  • Focus is the newest card.

Priority:

  1. Lead to plays in other hands.
  2. Lower rank.

Save clue

  • A (number) clue that marks a (unique) chop card¹.
  • Focus is the chop card.

¹Exception: 2 player game with 2+ consecutive saves.

Fix clue

  • A follow-up clue on the same hand as an initial play clue.
  • Required to change the focus (and prevent a misfire).
Fix clue example 1
red2
,with a
red2clue,
yellow5
,with a
yellow5clue,
green5
,with a
green5clue,
blue5
,with a
blue5clue,
white5
,with a
white5clue,
white1
,with a
white1clue,
white1
,with a
white1clue,
white2
,with a
white2clue,
red4
,with a
red4clue,
Bob 🡲
yellow4
,with a
yellow4clue,
red5
,with a
red5clue,
red3
,with a
red3clue,
white3
,with a
white3clue,
Cathy 🡲
  • Cathy's
    red3
    ,with a
    red3clue,
    must play next.
  • The focus of a 3 clue on its own will be
    white3
    ,with a
    white3clue,
    and the focus of a red clue will be
    red5
    ,with a
    red5clue,
    .
  • Alice to Cathy: these 2 cards are red.
red2
,with a
red2clue,
yellow5
,with a
yellow5clue,
green5
,with a
green5clue,
blue5
,with a
blue5clue,
white5
,with a
white5clue,
white1
,with a
white1clue,
white1
,with a
white1clue,
white2
,with a
white2clue,
red4
,with a
red4clue,
Bob 🡲
yellow4
,with a
yellow4clue,
red5
,with a
red5clue,
red3
,with a
red3clue,
white3
,with a
white3clue,
Cathy 🡲
  • Bob to Cathy: these 2 cards are 3s - this fix clue changes the focus from
    red5
    ,with a
    red5clue,
    to
    red3
    ,with a
    red3clue,
    (now visible).
red2
,with a
red2clue,
yellow5
,with a
yellow5clue,
green5
,with a
green5clue,
blue5
,with a
blue5clue,
white5
,with a
white5clue,
white1
,with a
white1clue,
white1
,with a
white1clue,
white2
,with a
white2clue,
red4
,with a
red4clue,
Bob 🡲
yellow4
,with a
yellow4clue,
red5
,with a
red5clue,
red3
,with a
red3clue,
white3
,with a
white3clue,
Cathy 🡲
Fix clue example 2
red​
,with a
red​clue,
yellow1
,with a
yellow1clue,
green​
,with a
green​clue,
blue​
,with a
blue​clue,
white​
,with a
white​clue,
multicolour​
,with a
multicolour​clue,
white5
,with a
white5clue,
yellow4
,with a
yellow4clue,
red3
,with a
red3clue,
green5
,with a
green5clue,
Bob 🡲
white4
,with a
white4clue,
green4
,with a
green4clue,
multicolour2
,with a
multicolour2clue,
yellow2
,with a
yellow2clue,
Cathy 🡲
  • Avalanche of colors option is on, so multicolour cards are marked by any colour clue.
  • Cathy's
    yellow2
    ,with a
    yellow2clue,
    should play before it is discarded.
  • The focus of a 2 clue on its own will be
    multicolour2
    ,with a
    multicolour2clue,
    and the focus of a yellow clue will also be
    multicolour2
    ,with a
    multicolour2clue,
    .
  • Alice to Cathy: these 2 cards are yellow.
red​
,with a
red​clue,
yellow1
,with a
yellow1clue,
green​
,with a
green​clue,
blue​
,with a
blue​clue,
white​
,with a
white​clue,
multicolour​
,with a
multicolour​clue,
white5
,with a
white5clue,
yellow4
,with a
yellow4clue,
red3
,with a
red3clue,
green5
,with a
green5clue,
Bob 🡲
white4
,with a
white4clue,
green4
,with a
green4clue,
multicolour2
,with a
12clue,
yellow2
,with a
yellow2clue,
Cathy 🡲
  • Bob to Cathy: these 2 cards are 2s - this fix clue changes the focus from the left 2 to the other 2.
red​
,with a
red​clue,
yellow1
,with a
yellow1clue,
green​
,with a
green​clue,
blue​
,with a
blue​clue,
white​
,with a
white​clue,
multicolour​
,with a
multicolour​clue,
white5
,with a
white5clue,
yellow4
,with a
yellow4clue,
red3
,with a
red3clue,
green5
,with a
green5clue,
Bob 🡲
white4
,with a
white4clue,
green4
,with a
green4clue,
multicolour2
,with a
12clue,
yellow2
,with a
yellow2clue,
Cathy 🡲
  • Note: if a multicolour card is the intended target of a play clue, the clearest clue would be a colour that does not splash any other card.

Bad clue

  • Tell a lie e.g. a clue that marks
    red2
    ,with a
    red2clue,
    as playable without the required
    red1
    ,with a
    red1clue,
    .
  • Mark unknown trash or duplicate cards e.g. mark 4s in another hand when your hand could have a copy of that 4.
Standard convention: Play clue
red1
,with a
red1clue,
yellow5
,with a
yellow5clue,
green1
,with a
green1clue,
blue3
,with a
blue3clue,
white4
,with a
white4clue,
red2
,with a
red2clue,
yellow4
,with a
yellow4clue,
red3
,with a
red3clue,
white5
,with a
white5clue,
Bob 🡲
white4
,with a
white4clue,
yellow1
,with a
yellow1clue,
red4
,with a
red4clue,
red3
,with a
red3clue,
Cathy 🡲
  • Alice to Bob: these 2 cards are red.
red1
,with a
red1clue,
yellow5
,with a
yellow5clue,
green1
,with a
green1clue,
blue3
,with a
blue3clue,
white4
,with a
white4clue,
red2
,with a
red2clue,
yellow4
,with a
yellow4clue,
red3
,with a
red3clue,
white5
,with a
white5clue,
Bob 🡲
white4
,with a
white4clue,
yellow1
,with a
yellow1clue,
red4
,with a
red4clue,
red3
,with a
red3clue,
Cathy 🡲
  • Bob now knows his newest card is the next playable in the sequence (
    red2
    ,with a
    red2clue,
    ), and the other marked card is
    red3
    ,with a
    red3clue,
    ,
    red4
    ,with a
    red4clue,
    or
    red5
    ,with a
    red5clue,
    (because every marked card will be playable at some point).
Standard convention: Prompt
red2
,with a
red2clue,
yellow5
,with a
yellow5clue,
green1
,with a
green1clue,
blue3
,with a
blue3clue,
white4
,with a
white4clue,
blue5
,with a
blue5clue,
yellow4
,with a
yellow4clue,
red3
,with a
red3clue,
white5
,with a
white5clue,
Bob 🡲
white2
,with a
white2clue,
white4
,with a
white4clue,
yellow1
,with a
yellow1clue,
red4
,with a
red4clue,
Cathy 🡲
  • Alice to Cathy: this card is red.
red2
,with a
red2clue,
yellow5
,with a
yellow5clue,
green1
,with a
green1clue,
blue3
,with a
blue3clue,
white4
,with a
white4clue,
blue5
,with a
blue5clue,
yellow4
,with a
yellow4clue,
red3
,with a
red3clue,
white5
,with a
white5clue,
Bob 🡲
white2
,with a
white2clue,
white4
,with a
white4clue,
yellow1
,with a
yellow1clue,
red4
,with a
red4clue,
Cathy 🡲
  • Cathy now knows her marked card is the next playable in the sequence ⇨
    red4
    ,with a
    red4clue,
    , because
    red3
    ,with a
    red3clue,
    is already marked.
  • Bob now knows his marked red card is
    red3
    ,with a
    red3clue,
    and he must play it now.

Finesse convention

Players assume:

  • Standard convention
  • Play clues may also include the newest, unmarked cards in every hand.
Finesse example
red​
,with a
red​clue,
yellow​
,with a
yellow​clue,
green​
,with a
green​clue,
blue​
,with a
blue​clue,
white​
,with a
white​clue,
blue1
,with a
blue1clue,
red5
,with a
red5clue,
blue3
,with a
blue3clue,
white1
,with a
white1clue,
Bob 🡲
red5
,with a
red5clue,
red2
,with a
red2clue,
blue2
,with a
blue2clue,
green2
,with a
green2clue,
Cathy 🡲
  • Alice to Cathy: this card is blue.
red​
,with a
red​clue,
yellow​
,with a
yellow​clue,
green​
,with a
green​clue,
blue​
,with a
blue​clue,
white​
,with a
white​clue,
blue1
,with a
blue1clue,
red5
,with a
red5clue,
blue3
,with a
blue3clue,
white1
,with a
white1clue,
Bob 🡲
red5
,with a
red5clue,
red2
,with a
red2clue,
blue2
,with a
blue2clue,
green2
,with a
green2clue,
Cathy 🡲
  • Cathy now knows her marked card
    blue2
    ,with a
    blue2clue,
    is playable.
  • Bob knows that Cathy will bomb her
    blue2
    ,with a
    blue2clue,
    as
    blue1
    ,with a
    blue1clue,
    unless a
    blue1
    ,with a
    blue1clue,
    is played first.
  • Bob does not see the connecting
    blue1
    ,with a
    blue1clue,
    , so assumes he has to play it now.
  • Bob does not have a marked card that could be
    blue1
    ,with a
    blue1clue,
    , so Bob blind plays his newest unmarked card.
  • blue1
    ,with a
    blue1clue,
    successfully plays.
Reversed finesse example
red​
,with a
red​clue,
yellow​
,with a
yellow​clue,
green​
,with a
green​clue,
blue​
,with a
blue​clue,
white​
,with a
white​clue,
red5
,with a
red5clue,
red2
,with a
red2clue,
blue2
,with a
blue2clue,
green2
,with a
green2clue,
Bob 🡲
blue1
,with a
blue1clue,
red5
,with a
red5clue,
blue3
,with a
blue3clue,
white1
,with a
white1clue,
Cathy 🡲
  • Alice to Bob: this card is blue.
red​
,with a
red​clue,
yellow​
,with a
yellow​clue,
green​
,with a
green​clue,
blue​
,with a
blue​clue,
white​
,with a
white​clue,
red5
,with a
red5clue,
red2
,with a
red2clue,
blue2
,with a
blue2clue,
green2
,with a
green2clue,
Bob 🡲
blue1
,with a
blue1clue,
red5
,with a
red5clue,
blue3
,with a
blue3clue,
white1
,with a
white1clue,
Cathy 🡲
  • Bob now knows his marked
    blue2
    ,with a
    blue2clue,
    is playable.
  • Bob sees the newest, unmarked card in Cathy's hand is of the same colour and playable now. Bob assumes it is a finesse with the players in reversed order and his blue card is
    blue2
    ,with a
    blue2clue,
    .
Bluff example
red​
,with a
red​clue,
yellow​
,with a
yellow​clue,
green​
,with a
green​clue,
blue​
,with a
blue​clue,
white​
,with a
white​clue,
white1
,with a
white1clue,
red5
,with a
red5clue,
blue3
,with a
blue3clue,
white1
,with a
white1clue,
Bob 🡲
red5
,with a
red5clue,
red2
,with a
red2clue,
blue2
,with a
blue2clue,
green2
,with a
green2clue,
Cathy 🡲
  • Alice to Cathy: this card is blue.
red​
,with a
red​clue,
yellow​
,with a
yellow​clue,
green​
,with a
green​clue,
blue​
,with a
blue​clue,
white​
,with a
white​clue,
white1
,with a
white1clue,
red5
,with a
red5clue,
blue3
,with a
blue3clue,
white1
,with a
white1clue,
Bob 🡲
red5
,with a
red5clue,
red2
,with a
red2clue,
blue2
,with a
blue2clue,
green2
,with a
green2clue,
Cathy 🡲
  • Cathy now knows her marked card
    blue2
    ,with a
    blue2clue,
    is playable.
  • Bob does not see the connecting
    blue1
    ,with a
    blue1clue,
    , so assumes he has to play it now.
  • Bob does not have a marked card that could be
    blue1
    ,with a
    blue1clue,
    , so Bob blind plays his newest unmarked card.
  • white1
    ,with a
    white1clue,
    successfully plays and the bluff is revealed.
  • Before Bob played, Cathy thought her marked card was
    blue1
    ,with a
    blue1clue,
    .
  • After Bob plays, Cathy knows her marked card is another valuable blue card.

All conventions interpret Cathy's card as a valuable, not-yet-playable blue card.

Some interpretations are more stringent, also must be a 1-away-from-playable
blue2
,with a
blue2clue,
.

Marked card discard

If a non-trash marked card is discarded it means:

  • A copy of that card is already marked in someone else's hand (sarcastic discard); or
  • A copy of that card must be marked in a future save clue (use with caution); or
  • An unmarked copy of that card is playable (gentleman's discard)

Definitions

Basic

Convention: Agreed set of clue, play and discard interpretations. e.g. a number clue that marks the chop card should be interpreted as a unique card save (if there is a unique card of that number).

Strategy: Plan to achieve the highest score. e.g. to mark first copies of cards.

Marked: A card touched by a clue.

Focus: The target card of a clue.

Play clue: Clue that marks a focused card to play.

Playable: A card that can be marked by a play clue.

Trash: A card that can never be played successfully.

Bomb: A play that causes a misfire.

Draw: The newest card in a hand.

Chop: The oldest, unmarked card in a hand.

Unique: The last remaining card of its rank and colour (that can be played successfully at some point).

Save: A (number) clue that marks a chop card to prevent discard.

Prompt: A play clue that causes connecting marked card(s) to play.

Intermediate

Good Touch Principle: All marked cards will eventually be played.

Splash: Additional new colour or rank information of cards that are not the focus.

Locked: A hand with all cards marked without any plays.

Reclue: A repeated clue that causes marked card(s) to play.

Fix clue: Follow-up clue required to change the focus of a play clue (and prevent a misfire).

Discard clue: Clue that marks trash card(s) to be discarded (to prevent a misfire or unwanted discard).

Stall clue: A clue given to avoid discarding.

Finesse: A play clue that causes connecting unmarked card(s) to play.

Bluff: A play clue that causes a non-connecting unmarked card to play immediately.

Bluff seat: The player directly before the player who is bluffed.

Bottom-decked: When the remaining copy of a playable card is too near the bottom of the deck to achieve a perfect score.

Early save: A save clue with a known playable card in the same hand, or does not mark the chop card¹. i.e. a play clue.

Double save: Two consecutive saves in the same hand.

Double discard: Two consecutive players discard copies of the same chop card, resulting in a unique discard. A special problem, since, to each of the consecutive players, a number clue that marks their chop card does not look like a save clue (and therefore looks like a play clue).

Sarcastic discard: Discard of a duplicate marked copy of a card in another hand.

Skip / steal: When a player gives a clue that could have been given by one of the skipped players.

Scream discard: An unexpected discard to save a unique card in another hand.

Advanced

Long finesse: A finesse of three or more cards lasting more than one complete round.

Layered finesse: A finesse with unrelated playable card(s) in front of the target card(s).

Scream play: An unexpected chop play to save a unique card in another hand.

Clued misplay: A play clue that causes a misfire to prevent a unique discard in the same hand.

Positional misplay: An unexpected play that marks the same slot position in another hand to play immediately.

Gentleman's discard: Discard of a playable card to play an unmarked copy in another hand.

Play refusal: Instead of playing, a player clues or discards their chop.

Hesitation play: After a play refusal of a playable card, another player may be able to blind play an unmarked card.

Generation discard: An unexpected discard to gain 1clue tokens.

Options

Colors

Normal: 5 colors

50 cards
Red (r)
red1
,with a
red1clue,
red1
,with a
red1clue,
red1
,with a
red1clue,
red2
,with a
red2clue,
red2
,with a
red2clue,
red3
,with a
red3clue,
red3
,with a
red3clue,
red4
,with a
red4clue,
red4
,with a
red4clue,
red5
,with a
red5clue,
Yellow (y)
yellow1
,with a
yellow1clue,
yellow1
,with a
yellow1clue,
yellow1
,with a
yellow1clue,
yellow2
,with a
yellow2clue,
yellow2
,with a
yellow2clue,
yellow3
,with a
yellow3clue,
yellow3
,with a
yellow3clue,
yellow4
,with a
yellow4clue,
yellow4
,with a
yellow4clue,
yellow5
,with a
yellow5clue,
Green (g)
green1
,with a
green1clue,
green1
,with a
green1clue,
green1
,with a
green1clue,
green2
,with a
green2clue,
green2
,with a
green2clue,
green3
,with a
green3clue,
green3
,with a
green3clue,
green4
,with a
green4clue,
green4
,with a
green4clue,
green5
,with a
green5clue,
Blue (b)
blue1
,with a
blue1clue,
blue1
,with a
blue1clue,
blue1
,with a
blue1clue,
blue2
,with a
blue2clue,
blue2
,with a
blue2clue,
blue3
,with a
blue3clue,
blue3
,with a
blue3clue,
blue4
,with a
blue4clue,
blue4
,with a
blue4clue,
blue5
,with a
blue5clue,
White (w)
white1
,with a
white1clue,
white1
,with a
white1clue,
white1
,with a
white1clue,
white2
,with a
white2clue,
white2
,with a
white2clue,
white3
,with a
white3clue,
white3
,with a
white3clue,
white4
,with a
white4clue,
white4
,with a
white4clue,
white5
,with a
white5clue,

Tricky: 6th color (10 cards)

  • These cards are marked by a separate multicolour clue.
+10 cards
Multicolour (m)
multicolour1
,with a
multicolour1clue,
multicolour1
,with a
multicolour1clue,
multicolour1
,with a
multicolour1clue,
multicolour2
,with a
multicolour2clue,
multicolour2
,with a
multicolour2clue,
multicolour3
,with a
multicolour3clue,
multicolour3
,with a
multicolour3clue,
multicolour4
,with a
multicolour4clue,
multicolour4
,with a
multicolour4clue,
multicolour5
,with a
multicolour5clue,

Difficult: 6th color (5 cards)

  • These cards are marked by a separate multicolour clue.
+5 cards
Multicolour (m)
multicolour1
,with a
multicolour1clue,
multicolour2
,with a
multicolour2clue,
multicolour3
,with a
multicolour3clue,
multicolour4
,with a
multicolour4clue,
multicolour5
,with a
multicolour5clue,

Avalanche of Colors: Multicolor (10 multicolor)

  • These cards are marked by any colour clue.
+10 cards
Multicolour (m)
multicolour1
,with a
multicolour1clue,
multicolour1
,with a
multicolour1clue,
multicolour1
,with a
multicolour1clue,
multicolour2
,with a
multicolour2clue,
multicolour2
,with a
multicolour2clue,
multicolour3
,with a
multicolour3clue,
multicolour3
,with a
multicolour3clue,
multicolour4
,with a
multicolour4clue,
multicolour4
,with a
multicolour4clue,
multicolour5
,with a
multicolour5clue,

Black Powder

  • Clues cannot be given for the colour black.
  • Black cards must be played in reverse order 5 ⇨ 4 ⇨ 3 ⇨ 2 ⇨ 1.
+10 cards
Black Powder (p/k)
black powder5
,with a
black powder5clue,
black powder5
,with a
black powder5clue,
black powder5
,with a
black powder5clue,
black powder4
,with a
black powder4clue,
black powder4
,with a
black powder4clue,
black powder3
,with a
black powder3clue,
black powder3
,with a
black powder3clue,
black powder2
,with a
black powder2clue,
black powder2
,with a
black powder2clue,
black powder1
,with a
black powder1clue,

5 flamboyants

After playing the last card of a colour, randomly draw a bonus card and apply its effect:

  1. Gain 1clue tokens
  2. Gain 1clue tokens and recover a life.
  3. Give a colour clue.
  4. Give a number clue.
  5. Shuffle a discarded card into the deck (optional).
  6. Play a discarded card (optional).

Convention used

Name Summary References
Standard BGA convention without blind-plays. Standard convention above

Hanabi "reference" for bga

Finesse BGA convention with blind-plays. Finesse convention above

Hanabi "reference" for bga

Hat-guessing Clues relate to slot position, not the cards marked. H-Group

Robert Kaspar

H-Group empty clues

Logical Leftism No convention, just logic. hanabi logic
Closest Friend Clue interpretation depends on which player gave the clue. H-Group
Secret convention Each player randomly selects a secret restriction. Secret variant

Secret hanabi restriction

Conventional Leftism Same as Standard. hanabi logic

Postmans

Chop-focus The focus of a clue that marks a chop card is always the chop card. H-Group

Preset deck

Preset decks are useful for comparing teams/conventions using the same deck:

  • No (cards are shuffled)
  • Preset deck #1 of the day
  • Preset deck #2 of the day
  • Preset deck #3 of the day
  • Preset deck #4 of the day
  • Preset deck #5 of the day

Preset decks are changed at 0:00 (?) UTC

Unofficial variant

Deal
# Players 2 3 4 5
# Cards 6 5 4 3

ELO rating

Rating is visibly hidden around tables with the 7 distinct ELO skill levels:

rank Beginner rank Apprentice rank Average rank Good rank Strong rank Expert rank Master.
  1. Hanabot's ELO is generated from:
    • Final score¹
    • Average team ELO
    • Colour option²
  2. ELO change is calculated as if tied with Hanabot.

Hanabots' ELO ratings were set by an experienced player - i.e. ratings are not random or simply proportional to score or players' ELO.

¹Hanabot's ELO = 0 with scores < 18 (5 colours) and < 21 (6 colours).

²+5 card multicolor option is unrated (too dependent on draw to reflect skill).

Cheating

  • Players can cheat at Hanabi by sharing information via the chat user interface. This is why ranking has been disabled for this game.
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