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George Duke wrote on Thu, Jun 1, 2017 10:03 PM UTC:

The Simpleminded Chess leading site touts a CV last week.  http://en.chessbase.com/post/nunn-again-victory-after-38-years.  The new piece, owned by both sides, Duck is a blocker like in Eight Stone -- repeating a concept used also in a few other CVs that have been around for decades. But let them of ChessBase think of it as new idea if they want.  The concept is related also to the Blue Queen chess forms in that both sides get to move the piece.  The best CV developer Parton is cited in the ChessBase article for CV proliferation, but anymore publication in monographs is not everything, so I think legitimately Charles Gilman is five or six times more prolific than V. R. Parton was with CVs of reasonably consistent good quality. Parton's Alice though certainly is one of about ten CVs that are standing the test of time.  Specific Duck Chess rates  '6' out of a 10. It would grow old quickly with not that much really exciting tactics, nothwithstanding the one good problem presented.  The exact Duck Chess embodiment is unique, since of course it takes minimal competence to tweak a rule, or throw together a new combination of pieces,  and call it a new CV of one's own invention. (See Aiken's Eight-Stone having several blockers at once not on small 64 squares, but average 72 as 8x9,  for more intriguing chess variant in the genre.)


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