Be the last to move in this extremely minimal game of tactics.
Designer: Mark Steere
Publisher: Mark Steere Games
Hadron is a combinatorial game for two players. It is played on an initially empty square grid with sides of length 5 (or some higher odd number). The players take turns placing a single stone of their color on an empty square orthogonally adjacent to an equal number of friendly and enemy stones. The first player unable to make a placement has lost the game.