Author: Andreas Stabel
Date: 08:05:05 09/20/99
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On September 20, 1999 at 08:01:29, Phil Dixon wrote: >On September 19, 1999 at 10:06:51, Robert Hyatt wrote: > >>On September 19, 1999 at 08:17:46, Phil Dixon wrote: >> >>>I recently played a game where I had the possibility of 68 different moves in >>>one position. I didn't actually count them but relied on a program analysis of >>>the game afterwards that shows the number of moves per position. I am >>>interested in knowing what is the most possible moves for one side in a >>>position. Can someone figure this out or is it too difficult? As for me, I >>>haven't a clue how to do it. >>> >>>Many thanks! >>> >>>Phil >> >> >>I don't remember the exact number, but my Cray Blitz partner Harry Nelson >>had a position with over 200 moves. 218 rings a bell but I wouldn't bet money >>on that being exact... > >Would you happen to have an example of such a position? It sounds fascinating. >If it's not too hard to find, I would like to see. Thank you very much for >taking the time to give me an answer to my occasional questions. > >Phil This has been posted several times, but since it is some time since the last, here it is: 1. no promoted pieces, without promotion moves: 109 white moves (W.Cross 1967) 2. no promoted pieces : 144 white moves (J.Ban 1960) 3. with promoted pieces : 218 white moves (Dickins 1968) 4. with all 32 pieces : 99 white moves (HH.Cross 1946) 1. 5k2/2K5/3N1B1P/P1NB4/6Q1/4R3/P1PP1P1P/1R6 w - - 0 1 2. n1r1r1b1/1P1P1P1P/1Q6/3NBNK1/R7/4p1p1/3PBPkP/2R5 w - - 0 1 3. 3Q4/1Q4Q1/4Q3/2Q4R/Q4Q2/3Q4/1Q4Rp/1K1BBNNk w - - 0 1 4. q2Q3r/n6R/kpB1N1K1/p1p1Bppp/1PN3P1/1n1pp1b1/P1PPPP1P/r5Rb w - - 0 1 Theese positions may break several chess engines :) Regards Andreas Stabel
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