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==Objective==
==Objective==
Connect Four is a two-player connection game.
Connect Four is a two-player connection game. The objective is to connect four of your colored discs in a straight line while preventing your opponent from doing the same.


Connect four of your checkers in a row while preventing your opponent from doing the same.
==Game play==
The players take turns dropping one colored disc from the top into a vertically suspended grid. The discs fall straight down, occupying the lowest available space within the column.


==Gameplay==
The game ends when one player forms a horizontal, vertical, or diagonal line of four of their own  discs. If the entire board fills up before either player achieves four in a row, then the game ends in a tie.
The players first choose a color and then take turns dropping one colored disc from the top into a vertically suspended grid.


The pieces fall straight down, occupying the lowest available space within the column.
==Board sizes==
 
Five board sizes (6x7, 8x9, 9x8, 9x9, and 10x10) are available in the BGA implementation.
The objective of the game is to be the first to form a horizontal, vertical, or diagonal line of four of one's own discs.
 
For games where the board fills up before either player achieves four in a row, then they are a draw.


==Opening rule==
==Opening rule==
Two opening rules are implemented to eliminate first player advantage.
Two optional opening rules are implemented to eliminate first player advantage.


* Pie rule: After the first move of the first player, the second player may switch colors.
* Pie rule: After the first player's first move, the second player may switch colors.


* Swap rule: The first player places three discs - one red disc, one yellow disc, then another red disc. After the first 3 discs are placed, the second player may switch colors.
* Swap rule: The first player places three discs - a red disc, a yellow disc, and another red disc. After the first 3 discs are placed, the second player may switch colors.


==Arena mode==
==Arena mode==
6x7 board size is unavailable in Arena mode due to solver issues.
The 6x7 board size is unavailable in Arena mode because the game is too easily solved.


Opening rule is locked as swap rule to allow more opening moves to be played and remove potential first/second player advantage.
The opening rule is locked as the swap rule, to allow various opening moves to be played and to remove any potential first/second player advantage.


Currently (from Oct. 2021) the board size option rotates as the season passes (9x9 → 8x9 → 9x9 → 8x9 → ...).
The board size option rotates as the season passes (8x9 → 9x9 → 10x10 → 8x9 → ...).


Gurus, '''do not vote for 6x7 board or non-swap openings!'''
Gurus, ''do not vote for a 6x7 board size or non-swap openings!''

Latest revision as of 13:45, 25 August 2024

Objective

Connect Four is a two-player connection game. The objective is to connect four of your colored discs in a straight line while preventing your opponent from doing the same.

Game play

The players take turns dropping one colored disc from the top into a vertically suspended grid. The discs fall straight down, occupying the lowest available space within the column.

The game ends when one player forms a horizontal, vertical, or diagonal line of four of their own discs. If the entire board fills up before either player achieves four in a row, then the game ends in a tie.

Board sizes

Five board sizes (6x7, 8x9, 9x8, 9x9, and 10x10) are available in the BGA implementation.

Opening rule

Two optional opening rules are implemented to eliminate first player advantage.

  • Pie rule: After the first player's first move, the second player may switch colors.
  • Swap rule: The first player places three discs - a red disc, a yellow disc, and another red disc. After the first 3 discs are placed, the second player may switch colors.

Arena mode

The 6x7 board size is unavailable in Arena mode because the game is too easily solved.

The opening rule is locked as the swap rule, to allow various opening moves to be played and to remove any potential first/second player advantage.

The board size option rotates as the season passes (8x9 → 9x9 → 10x10 → 8x9 → ...).

Gurus, do not vote for a 6x7 board size or non-swap openings!