Author: Uri Blass
Date: 06:59:46 12/03/04
Go up one level in this thread
On December 03, 2004 at 09:54:20, Uri Blass wrote: >On December 03, 2004 at 09:40:06, Uri Blass wrote: > >>On December 03, 2004 at 09:10:34, Albert Silver wrote: >> >>>I'm still finding very strange blunders in these games. I took a look at the >>>previous thread and ran across this very strange item: >>> >>>[D]rr4k1/p3pnb1/2p1b1N1/2p1PpP1/qp3B2/3P4/PPP1QP2/2KR3R b - - 0 19 >>> >>>According to the PGN you provided, Tiger spent 43 minutes(!!) to throw the game >>>away in one move with 19...Nd8??? 20.Rh7! Note that Tiger 15 proposes 19...Qxa2 >>>which is quite playable, and even 19...Nh8 is fine. >>> >>> Albert >> >>This is from http://www.talkchess.com/forums/1/message.html?398581 >> >> >> >>Maybe movei was used for that move. >> >>Movei suggests exactly the same blunder on A3000 after few minutes of search >>with 0.00 evaluation. >>It finds the fail low only at depth 14 and finding a different move may take it >>a long time(maybe more than 43 minutes on A1200). >> >> >>depth=13 +0.00 f7d8 e2h5 a4a2 h5h7 g8f7 g6e7 a2a1 c1d2 a1b2 g5g6 f7e7 h7g7 d8f7 >>g6f7 b2c3 d2c1 c3a1 c1d2 a1c3 >>Nodes: 46700862 NPS: 569036 >>Time: 00:01:22.07 >>depth=13 +0.00 f7d8 e2h5 a4a2 h5h7 g8f7 g6e7 a2a1 c1d2 a1b2 g5g6 f7e7 h7g7 d8f7 >>g6f7 b2c3 d2c1 c3a1 c1d2 a1c3 >>Nodes: 123101620 NPS: 557752 >>Time: 00:03:40.71 >>depth=14 -0.30 f7d8 >>Nodes: 254569908 NPS: 567526 >>Time: 00:07:28.56 >>depth=14 -1.00 f7d8 >>Nodes: 332328769 NPS: 565204 >>Time: 00:09:47.98 >> >>Uri > >Movei needs more than 20 minutes on A3000 to fail high on Qxa2. >It still did not solve the fail high at this moment so if ssdf used movei >instead of tiger then it can explain the blunder. > >For some reason I do not expect that explanation to be correct. > >1084516 <first : 14 -249 107903 604988143 f7d8 h1h7 a4a2 e2h5 b8b7 d1h1 a2a1 >c1d2 a1h1 h5h1 b4b3 c2b3 e6b3 f4e3 g8f7 >1267922 <first : 14 -248 126243 710727556 a4a2 >1273625 <first : 14 -219 126814 714342343 a4a2 > > >depth=14 -2.19 a4a2 >Nodes: 714342343 NPS: 563299 >Time: 00:21:08.14 1616297 <first : 14 -11 161081 896141302 a4a2 e2h5 f7d8 h5h7 g8f7 g6e7 f7e7 h7g7 d8f7 g5g6 a2a1 c1d2 a1b2 g6f7 b8f8 h1h8 b2c3 d2e3 c3c2 f4g5 e7d7 h8f8 a8f8 g7f8 c2d1 1665047 <first : 14 -10 165956 923581972 f7h8 1699547 <first : 14 -8 169406 943898015 f7h8 e2h5 a4a2 h5h7 g8f7 g6e7 f7e7 h7g7 h8f7 g5g6 a2a1 c1d2 a1b2 g6f7 b8f8 g7f6 e7d7 h1h6 b2c3 d2e3 final word Movei need less than 43 minutes and even less than 30 minutes to find Qxa2 or Nh8 but not on the ssdf hardware. Uri
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