Author: Robert Hyatt
Date: 11:55:50 04/01/04
Go up one level in this thread
On April 01, 2004 at 12:26:55, Slater Wold wrote: >On April 01, 2004 at 12:04:39, Robert Hyatt wrote: > >>On March 31, 2004 at 23:15:56, Slater Wold wrote: >> >>>On March 31, 2004 at 22:35:50, Robert Hyatt wrote: >>> >>>>On March 31, 2004 at 11:09:26, Mihaly Szalai wrote: >>>> >>>>>From the game Chekhov - Sorokin, Protvino,1988. >>>>> >>>>>[D]5k2/6p1/2p5/2P2PKP/3B4/1b6/1P6/8 w - - 0 52 >>>>> >>>>>White is two pawns up but there are opposite color bishops. >>>>>Both 52.f6 and 52.h6 are bad, however 52.Bxg7! wins. >>>>> >>>>>You should show it to your engine, I'm sure that quite a few >>>>>will find it. >>>>> >>>>>Thanks >>>>>Mihaly >>>> >>>> >>>>Takes Crafty about two seconds on my dual xeon to find the move, about a half a >>>>minute to see a winning score: >>>> >>>> 19 39.63 +1 1. Bxg7+!! >>>> 19 42.46 +3 1. Bxg7+!! >>>> 19 49.90 2.95 1. Bxg7+ Kxg7 2. f6+ Kh7 3. Kf4 Kh6 >>>> 4. Ke5 Kg5 5. Kd6 Kxf6 6. Kxc6 Ke6 >>>> 7. h6 Bd5+ 8. Kb6 Kf6 9. c6 Be6 10. >>>> Kb7 Bd5 11. b4 Ke5 (s=8) >>>> 19-> 1:21 2.95 1. Bxg7+ Kxg7 2. f6+ Kh7 3. Kf4 Kh6 >>>> 4. Ke5 Kg5 5. Kd6 Kxf6 6. Kxc6 Ke6 >>>> 7. h6 Bd5+ 8. Kb6 Kf6 9. c6 Be6 10. >>>> Kb7 Bd5 11. b4 Ke5 (s=7) >>> >>>I take it you've made some changes? >>> >>>What is that +1 & +3?? >> >> >>That is in the most recently released version I think. It fails high (or low) >>in steps. +1 means expectation is winning a pawn, +3 is winning a piece, +M >>means beta was relaxed to + infinity (probably mating)... > >I thought 19.11 was the current release, which I have, and it does not do this. >:) > >I like the change though! My error. It is in 19.12 only. I just released this source version if you want to play with it...
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.