7D Swapper is a new logic game that is not less interesting than the
legendary Tetris and Lines. The simple rules and its fascinating logic
make the game understandable and accessible to all players. The squared
field 8x8 cells in a size is filled with the chesspieces of nine various
types at random. The player can swap two adjacent chesspieces, thus the
chesspieces should gather in a number not less than three of one type.
