The pentomino is a geometric pattern which is the basis of a number of tiling patterns and puzzles. There is also a board game of skill based on it, called pentominoes.
The game is played on a 8x8 checkerboard by two or three players. Players take turns in placing pentominoes on the board in such a way that they do not overlap with existing tiles and no tile is used more than once. The objective is to be the last player to place a tile on the board.
The two player version has been solved; it is a first player win.