Author: Rémi Coulom
Date: 13:15:11 12/08/97
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On December 08, 1997 at 04:10:05, Walter Ravenek wrote: >The maximum number of legal moves in a position I have across is 215, >which is the number of white moves in the following position: > >4Q1qk/1Q4RN/3Q3N/Q4Q1B/2Q4B/4Q3/1Q4R1/3Q3K w - - > >In Arthur I use an upper bound 255, which seems quite safe to me. > >Walter Ravenek Here is an old article from rgcc : sadlowsk@mathematik.uni-bielefeld.de (Bernhard Sadlowski) wrote: >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) >(records taken from the book "Maerchenschach" by Anthony Dickins) >1. 5k2/2K5/3N1B2/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 >Many chess programs will crash if you setup most of these positions (esp. >with the positions 2 and 3). >Bernhard >-- >Bernhard Sadlowski ><sadlowsk@mathematik.uni-bielefeld.de> Rémi
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