Gem Blokus
Rules of the game Gem Blokus: - A board with 20 * 20 squares. - 4 players having each 21 pieces : 1 single-square, 1 domino, 2 triominos, 5 tetraminos and 12 pentaminos. - As player, I shall place on the board most of my pieces. - For first round, I must place a piece so that it touches one of the