Some resolutions are provided: Castling can be done on either the first or second move of a turn. A man can be moved twice in a turn if square colour requirements are met. (For example, with a white pawn on a2 and a black bishop on b4, White's turn can consist of a3 followed by axb4.) List of game inventions Chess variants Checkers chess (1950s) Decimal four-handed chess (1950s) Idle Kings' chess (1950s) Nightrider chess (1950s) Scaci Partonici (1950s) Decimal Rettah chess (1952) Double Rettah chess (1952) Parton's Game (1952) Rettah chess (1952) Tweedle chess (or Twin Orthodox chess) (1952) Alice chess (1953) Kinglet chess (or imperial fiddlesticks) (1953) Neutral King chess (1953) No-retreat chess (1954), co-inventor J. Boyer Black and White chess (or Black and White Marseillais chess) (1955) Ecila (1957 or earlier) Degraded chess (1958) Complete contramatic chess (1961) Contramatic chess (1961) Damate (1961) Racing Kings (1961) Dunce's chess (or advancing chess) (1961) Gryphon chess (or complicacious chess) (1961) Jabberwocky chess (1961) Knightmare chess (1961) Linear chess (1961) March Hare chess (1961) Royal Scaci Partonici (1961) Scacia (1961) Simpleton chess (or Simpletonry) (1961) Twin chess (1961) Unirexal chess (or The Black King's Complaint) (1961) Chimaera chess (1969) Mock chess (1969) Ambi-chess (1970) Best decimal butter (1970) Blot-straight chess (1970) Butters (1970) Capricorn chess (1970) Centaur Royal (1970) Cheshire Cat chess (1970) Co-regal chess (1970) Cubic chess (1970) Demigorgon chess (1970) Dodo chess (1970) Gorgona chess (1970) Identific (1970) Looking-glass chess (1970) Mad Threeparty chess (1970) Meddlers' chess (1970) Semi-queen chess (or half-queen's chess) (1970) Sphinx chess (1970) Timur's cubic chess (1970) Wyvern chess (1970) Circean (1971) Dabbabante chess (1971) Decimal Oriental chess (1971) Imitante Queen chess (1971) Synchronistic chess (1971) 2000 A.D. (1972) Royal Fury (1972) Gorgon chess (1973) Megasaur chess (1973) Mimotaur chess (1973) Rangers chess (1973) Triscacia (1974) Draughts variants Alician Draughts (1956) Damate (1961) Dragon Kinger, Simple Kinger, and Grand Kinger ScoundrelsOther games SalterelloMonographs (with section headings)Curiouser and Curiouser (1961), 31 pp. Scacetic The First Lesson in Chess Dunce's Chess in Three Grades Imperial Fiddlesticks The Queen's Relations The Dodo's Chess Rettah Simpletonry Alician The Black King's Complaint Tweedledee and Tweedledum Mock Turtle's Pseudomorphy Damification A New Pudding Podospherism Contramatic The Rules According to the March Hare Knightmares Gryphon's Fancy and Fun The Realm of Circum Morus The Caterpillar's Idea of C.C.C.Challenge and Delight of Chessical and Decimal (1970), 14 pp.Chesshire-Cat-Playeth Looking-Glass Chessys (1970) Part