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==Summary==
==Summary==
Lifeline is a territorial strategy game for two players (Black and White) that is played on the cells of an initially empty hexhex board. The recommended board sizes are between 3 and 12 cells per side. The game was invented by Michael Amundsen and Luis Bolaños Mures.
Lifeline is a territorial strategy game for two players (Black and White) that is played on the cells of an initially empty hexhex board. The recommended board sizes are between 3 and 12 cells per side.
 
Michael Amundsen and Luis Bolaños Mures invented Lifeline in February 2022. Although inspired by Go, the game bears a significant resemblance to Kanare Kato's Meridians.


==Definitions==
==Definitions==
A ''group'' is an entire set of connected stones of the same color. A single stone, not connected to others of its color, is also a group.
A ''group'' is an entire set of connected stones of the same color. A single stone, not connected to others of its color, is also a group.


A group is ''dead'' if there is no path of connected empty cells between that group and any other of its color.
A group is ''dead'' if there is no path of connected empty cells between that group and any other group of its color. The path does not need to be a straight line.


==Play==
==Play==
On your turn, perform the following actions in the stated order:
Black plays first, then turns alternate. On your turn, perform the following actions in order:


# Place a stone of your color on an empty cell. If it is your first turn of the game, perform this action twice.
# Place a stone of your color on an empty cell. If it is your first turn of the game, perform this action twice.
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# Remove all dead friendly groups.
# Remove all dead friendly groups.


The board positions at the start and at the end of your turn must be different.
The board positions at the start and at the end of your turn must be different. In other words, if the only stone you remove is the one you just placed, your placement is illegal.


==Objective==
The last player to make a placement wins. Note that, after your first turn, you will always have a placement available unless you have no groups on the board.
The last player to make a placement wins. Note that, after your first turn, you will always have a placement available unless you have no groups on the board.


==Balance==
To make the game fair, White will have the option, on their first turn only, to swap sides with Black instead of making a regular move.
To make the game fair, White will have the option, on their first turn only, to swap sides with Black instead of making a regular move.


==Variants==
==See also==
The standard game is made fair by the combination of the double first move and White's swap option, as described above. This balancing method is called strong pie. Some alternatives are:
[[Tips_lifeline|Strategy tips]]
 
* Weak pie: Instead of placing twice on their first turn, players place one stone on every turn, and dead groups are not removed until there are at least four stones on the board. White's swap option still applies, but takes place after Black has placed only one stone.
* Komi pie: Before the game starts, the first player chooses a whole number as the komi value, and then the second player chooses sides. The first four stones are placed in the same manner as with weak pie, but there is no swap option after Black's fist placement. Throughout the game proper, White will have the option to spend a point of komi instead of making a placement.
 
Unlike strong pie, these methods require somewhat large boards to be effective: at least base 6 for weak pie, and at least base 7 for komi pie.

Latest revision as of 19:29, 22 April 2023

Summary

Lifeline is a territorial strategy game for two players (Black and White) that is played on the cells of an initially empty hexhex board. The recommended board sizes are between 3 and 12 cells per side.

Michael Amundsen and Luis Bolaños Mures invented Lifeline in February 2022. Although inspired by Go, the game bears a significant resemblance to Kanare Kato's Meridians.

Definitions

A group is an entire set of connected stones of the same color. A single stone, not connected to others of its color, is also a group.

A group is dead if there is no path of connected empty cells between that group and any other group of its color. The path does not need to be a straight line.

Play

Black plays first, then turns alternate. On your turn, perform the following actions in order:

  1. Place a stone of your color on an empty cell. If it is your first turn of the game, perform this action twice.
  2. Remove all dead enemy groups.
  3. Remove all dead friendly groups.

The board positions at the start and at the end of your turn must be different. In other words, if the only stone you remove is the one you just placed, your placement is illegal.

Objective

The last player to make a placement wins. Note that, after your first turn, you will always have a placement available unless you have no groups on the board.

Balance

To make the game fair, White will have the option, on their first turn only, to swap sides with Black instead of making a regular move.

See also

Strategy tips

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