Although reversi is a simple rule, it is a complex and deep board game. - Rule explanation - · The first stone is a black stone and the second hand is a white stone. · Players alternately strike black stones, white stones. · In the direction of vertical, horizontal, diagonal, strike the stone so that the opponent's stone is sandwiched between your stones. · Change the pinch of the opponent's stone to the color of your stone. · You can not stone a place where you can not return the opponent's