Yodd is a two-player abstract board game played on a hexagonal board that was invented by Luis Bolaños Mures in 2011.


Yodd is played on a hexagonal board with seven cells per side. Larger boards can be used for a deeper game and smaller boards can be used for a shorter game.

Object of the Game

The winner of the game is the player with the least number of distinct groups of his stones when the game ends (group of stones is a set of same-colored stones touching each other). Draws are not possible.


The game begins with an empty board.

The Black player starts the game placing one stone of any color on any empty cell. After this move players take turns placing one or two stones of any color on empty cells.

At the end of each turn, there must be an odd number of groups on the board (i.e. the sum of the number of Black and White groups must be an odd number).

Players can pass their turn at any moment, unless it violates the previous rule (this means Black can't pass on his first turn).

When both players pass in succession, the game ends. The player with fewer groups on the board wins.

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