Author: Heiner Marxen
Date: 12:33:24 07/18/99
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On July 18, 1999 at 10:43:31, Ricardo Gibert wrote: >On July 17, 1999 at 15:42:00, Heiner Marxen wrote: > >>On July 17, 1999 at 11:37:13, Robert Hyatt wrote: >> >>>On July 17, 1999 at 07:16:04, Michel Langeveld wrote: >>> >>[snip] >>>>Thanks for the answer. You were right.. I did not meant the largest distance >>to mate but largest possible moves in 1 pos. I also noticed a position which >>>>9 queens has a lot of moves. But I think if additional pieces are added more >>moves are possible... but how much...? >>> >>>I am pretty sure the max is under 220. Such a FEN was posted on r.g.c.c a year >>>or two ago... you might find it in DejaNews with a search... >> >>Citing from a news article from Bernhard Sadlowski, Oct 31 1996: >> >>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 >> >>Heiner > >Are these "proven" maximums or are they "best known" maximums? Just "best known". I do not know about any proofs, except the obvious and much larger upper bounds. Heiner
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