Perfect information, no luck involved abstract strategy game. A checkers variant on the classic 8*8 square board. Every player has two kinds of pieces: round ones and square ones. Square pieces have an hole and round pieces fit into the hole, so two pieces of the same color of different shapes can share the same space. Square pieces capture opponent's round ones. Round pieces capture opponent's square ones. Pieces that reach the opposite side of the board become more powerful, as in checkers.