Author: Uri Blass
Date: 12:04:22 06/05/04
Go up one level in this thread
On June 05, 2004 at 14:24:17, Kurt Utzinger wrote: >On June 05, 2004 at 12:14:03, Uri Blass wrote: > >>On June 05, 2004 at 10:59:22, Kurt Utzinger wrote: >> >>>On June 05, 2004 at 10:53:14, Kurt Utzinger wrote: >>> >>>>On June 05, 2004 at 10:30:48, Daniel Shawul wrote: >>>> >>>>>Hi >>>>> >>>>>My engine lost against Gothmog after playing Rg3?? in this position >>>>> >>>>[D]8/8/8/4k1K1/6R1/8/5rp1/8 w - - 0 1 >>>>> >>>>>The position is in the 5 man TB but i don't have it yet. >>>>>DanChess searched to a depth of 18 and still can't solve this position. >>>>>What is the general guideline to evaluate this position? Should rook >>>>>pawn endgames(with more than one pawn in general) be evaluated differently? >>>>> >>>>>best >>>>>daniel >>> >>> There is no need to have tablebases here. Some endgame >>> knowledge would do the same. It's of course dead draw >>> as black's king will never be able to support its >>> pawn. The only thing for White is to keep its rook >>> where it is and to play Kg6/Kg5 and so on. >>> Kurt >> >> >>Some search can also do the same without lot of knowledge >> >>Here is some analysis of latest movei >> >>13 -176 4205 10834368 g4g3 f2f8 g5h6 f8h8 h6g7 h8h2 g3g4 e5f5 g4g3 f5f4 g3g6 f4 >>f3 g7f6 >>14 -228 7728 19816754 g4g3 f2f8 g5h6 f8h8 h6g7 h8h2 g3g4 e5f5 g4g3 f5f4 g3g6 f4 >>e3 g6e6 e3f3 e6e1 f3f2 >>14 -227 10356 26656758 g5g6 >>14 -198 29157 71570225 g5g6 >>14 -175 52458 125280528 g5g6 f2e2 g6g5 e2c2 g4g3 c2c8 g5h6 c8h8 h6g7 h8h2 g3g4 >>e5f5 g4g6 f5f4 g7f6 >>14 -175 52507 125405519 g5g6 f2e2 g6g5 e2c2 g4g3 c2c8 g5h6 c8h8 h6g7 h8h2 g3g4 >>e5f5 g4g6 f5f4 g7f6 >> >> >> >>Uri > > > Hi Uri > movei has also no idea of this endgame. The variation > given by the engine is a complete loss for White > 14 -175 52507 125405519 g5g6 f2e2 g6g5 e2c2 g4g3 > this is a terrible and losing mistake > c2c8 g5h6 c8h8 h6g7 h8h2 g3g4 e5f5 g4g6 f5f4 g7f6 > and Black has an easily won rook ending. > Kurt I did not claim that it knows but only that search is enough for it to avoid the blunder. The blunder is in the pv later but at that point the win is too deep for it to see. Uri
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