The following game is played by two players.
It's a board game that consists of 5 rows and 5 columns. The game is played with 7 blue stones and 7 red stones. Initially, the stones are arranged on the board as follows:
Players take turns, the first player plays with the blue stones. The second one plays with the red stones. During a turn, a player must move one of his or her stones by one square diagonally to an empty square. The winner is the player who first moves each of his or her stones to a square that was initially occupied by a stone of the opponent.