T4

T4 is a shareware logic game. It can be played by two human players, one player vs the computer, or computer vs computer. The computer opponent has three skill settings.

The game is played with tiles. The tiles are squares that are divided into four triangular sections by drawing diagonal lines from corner to corner. The triangles in the squares are coloured either white or black such that all sixteen unique combinations are catered for.
The game is turn based. Each player takes turns to give the other player a piece which they then place on the board. The object of the game is to be the player who completes a line of tiles where one triangle in every tile in the line has the same colour.