char[,] m = new char[8, 10] { {'□','□','■','□','■','□','□','□','□','■'},
                              {'■','□','■','□','■','■','■','■','□','■'},
                              {'■','□','□','□','□','□','□','□','□','■'},
                              {'■','■','■','□','■','■','■','■','□','■'},
                              {'■','□','□','□','□','□','□','■','■','■'},
                              {'■','■','■','■','□','■','□','□','□','■'},
                              {'□','□','□','□','□','□','□','□','□','■'},
                              {'■','■','■','■','■','■','□','□','□','□'}};