gadl: (3,1)
gadl: (3,0)
gadl: (3,-1)
gadl: (3,-2)
gadl: (3,-3)
gadl: (2,1)
gadl: (2,0)
gadl: (2,-1)
gadl: (2,-2)
gadl: (2,-3)
gadl: (1,1)
gadl: (1,0)
gadl: (1,-1)
gadl: (1,-2)
gadl: (1,-3)
gadl: (0,1)
gadl: Recursive Chessboard
gadl: (0,-1)
gadl: (0,-2)
gadl: (0,-3)
gadl: (-1,1)
gadl: (-1,0)
gadl: (-1,-1)
gadl: (-1,-2)
gadl: (-1,-3)
gadl: (-2,1)
gadl: (-2,0)
gadl: (-2,-1)
gadl: (-2,-2)
gadl: (-2,-3)