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Gomoku


Gomoku, also called go-moku (Japanese for "five points") is a tic-tac-toe-like game in which two players alternately place pieces, with each player using pieces of a fixed color, in an attempt to place five (or more) pieces in a row (horizontally, vertically, or diagonally). The game is traditionally played on a go board of size 19, although 13×13 and 9×9 boards are also common. By convention, play opens with black.

In standard gomoku, rows of exactly five piece are required for a win, so if a row longer than five pieces (called an overline) is created, it does not count as a win. In free-style gomoku, overlines also count as wins.

On a 15×15 board, black can always win with optimal play in either the standard or free-style variants (Allis 1994).


See also

Connect-Four, Go, Tic-Tac-Toe

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References

Allis, L. V.; van der Meulen, M.; and van den Herik, H. J. "Proof-Number Search." Artificial Intelligence 66, 91-124, 1994.

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Gomoku

Cite this as:

Weisstein, Eric W. "Gomoku." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Gomoku.html

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