Trap And Turn - Gameboy Color - Puzzle

Each player tries to fill the game board with as many discs of his color as possible. On each turn the player places a disc on the board by selecting a location where the opponents discs will become trapped between two of his discs. The trapped discs are flipped over to the players color. The game ends when the board is filled and the player with the greatest number of his color discs on the board wins.