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The Duke of Rutland's Chess. Large variant from 18th century England. (14x10, Cells: 140) [All Comments] [Add Comment or Rating]'DEF,LargeCV': Judgment about each game occurs within its 'environment' of related games and historical precedents. One term used in patents worldwide is how 'crowded' the 'prior art' is. One principle used by CV designers is novelty, as applied to both pieces and rules. Here Crowned Rook(R+K) non-royal makes debut as new piece, whilst the other heterodox long-ranger Concubine is used before by Carrera. Also facing the exigency of having ten ranks is Pawn's three-square option. Chess master Philidor played Duke of Rutland's Chess in mid-18th century. There is one unprotected Pawn initially, the l-Pawn, versus Courier Chess' three unguarded. DRC would probably play a lot like most of the older Turkish Great Chesses I-VI. Estimate their average number of moves typically around 60-80 per score.