pieces, then one of his opponent's men. When a player is in check, he must get out of check immediately on his turn by moving one of his own men. (If he cannot legally do so, he loses the game.) Cheshire Cat chess Game rules In this variant, all normal chess rules apply, except: Whenever a piece moves from its square, then that particular square must at once get out of the chessboard. Parton suggests using checker pieces to mark "disappeared" squares. Once vanished, a square may not be occupied again; however, pieces may move through disappeared square(s), including giving check through them. Since castling is impossible in Cheshire Cat Chess (pieces which normally clear a path for castling cause needed squares to "disappear"), Parton permits the kings to be moved like queens once per game, on their first move. Variation The game can also be played using a regular 8×8 board and set, but Parton suggests the 10×10 board with two extra rooks in the corners as "best". Co-regal chess In this variant, the queens are subject to check and checkmate the same as kings. Game rules Checkmate of the opponent's king or queen wins the game. The queen moves and captures as a normal queen, but may not put itself in check. The queen may pass over attacked squares. Amplified rules by NOST A queen, the result of a pawn promotion, is royal. A queen may check a king from a distance, but may not check a queen. Both kings and queens may castle . Comments "It will be seen that difficulties for a 'checkmate' of the hostile Queen must chiefly arise from her great mobility which enables her to escape to safety with some degree of ease, in contrast with the King's poor slow power to move out of grave dangers. Victory in Co-regal will be in general achieved by checkmate of the enemy King. [...] A player must acquire two new habits at least. He must crush all his desires to make some brilliant Queen sacrifice. When he attacks the hostile co-regal Queen, he is obliged to give the polite word 'check' as warning!" Sample game Walter Whiteman vs. Rib Orrell: 1.e4 Nf6 2.Nc3 e5 3.Nf3 Bc5 4.Bc4 Ng4 5.0-0 Nxf2+ 6.Rxf2 Bxf2+ 7.Kxf2 0-0 8.d3 d6 9.Ng5 Be6 10.Bxe6 fxe6+ 11.Ke1 h6 12.Nxe6+ Qh4+ 13.g3+ Qxh2 "Black threatens 14...Qg/h1 mate since a K move is