You can see a combination of what you need to create on a small field on the right. Game field is on the left. You make your move by clicking on a square on game filed. All stones around this square are turning. If the stone was visible it becames invisible and vice-versa. Game contains 3 levels: Easy: Level for training. You can't get your score in records listing. Standart: 32 standart levels. Random: This combinations are created randomly. You need to complete 32 combinations to win. You can control the game via menu (on top of the window) or using buttons on toolbar.