Author: Cliff Sears
Date: 18:37:37 09/05/04
Go up one level in this thread
On September 05, 2004 at 00:20:23, Stuart Cracraft wrote: >On September 04, 2004 at 21:39:53, Cliff Sears wrote: > >>[d] 4rrk1/1b2bppp/2q5/p1P1p3/3pN3/5P2/PPB1Q1PP/2RR2K1 b - - 0 20 >> >>1934 game between Alexander McDonnel and Louis Labourdonnais. From "The World's >>Greatest Chess Games" by Burgess >> >>Black to move and the move made by Black was "f5" "Black immediately begins the >>decisive advance. Note that he spends no time on prophylaxis against White's >>Queenside play, confident that his pawn-storm will sweep everything from its >>path" >> >>Black went on to win. >> >>Fritz 8 Suggests: Bb7-a6 >>Hiarcs 8 Suggests: Qc6-d7 >>and Kibitzer Anaconda 1.6.2 Suggests: Re8-c8 >> >>Does your engine have an even different suggestion or even the played move? > >Looks like everybody is disagreeing. Here are the results of >GA and Crafty. And they both differ from each other as well >as with the above! > >GA gives a lot of weight to centralized knights. In this case >enough to get the bishop over to hit the knight, but not enough >to force a f5 push. Wouldn't be hard to make the program do it. > >Still, there are clues, the tempo of f5 hitting the knight -- relative >lack of white king defense, the weakness at f3 and the weak(er) g3, etc. >I believe the king side pawn storm is a bit of a stretch though popular >in that time as defensive play was not popular. Stronger players will >no doubt disagree. > >Alpha=-108 Beta=392 Maxdepth=9999999 MaxTime=9999999 > 1/ 3> c6e4 0.00 392 8 c6e4 > 1/ 4 e7c5 0.01 1104 89 e7c5 > 2/18< e7c5 0.02 854 841 e7c5 e4c5 c6c5 c2h7 > 2/18 c6d5 0.02 142 1780 c6d5 e2b5 > 3/21 e8d8 0.06 145 10295 e8d8 e2c4 f8e8 > 4/21 e8d8 0.13 141 31863 e8d8 e2e1 c6c7 c2b3 > 5/27 c6e6 0.52 140 141955 c6e6 e2d3 e6h6 c2b3 > 6/31 c6d5 2.41 134 690624 c6d5 e2b5 e7d8 e4d6 b7c6 c2e4 > 7/36 b7c8 16.89 134 4221047 b7c8 e2e1 c8f5 e1a5 e8a8 a5b4 a8a2 > 8/48 e8b8 51.29 133 12385562 e8b8 e2d3 c6h6 d1e1 b7d5 d3a3 > 9/48 b7c8 259.08 127 49174372 b7c8 e2d2 c8f5 e4d6 f5c2 c1c2 e8a8 d6f5 e7f6 > >Crafty 19.16 plays: > > 7 0.98 -0.02 1. ... Rd8 2. Bd3 Qe6 3. Qd2 a4 4. > Ng5 Bxg5 5. Qxg5 Qxa2 > 7-> 1.87 -0.02 1. ... Rd8 2. Bd3 Qe6 3. Qd2 a4 4. > Ng5 Bxg5 5. Qxg5 Qxa2 > 8 3.10 0.15 1. ... Rd8 2. Bd3 Rc8 3. Re1 Rfd8 4. > Nd6 Bxd6 5. cxd6 Qxc1 6. Rxc1 Rxc1+ > 8 6.97 0.09 1. ... Rc8 2. f4 f6 3. Bd3 exf4 4. > Bc4+ Kh8 5. Rxd4 Bxc5 6. Nxc5 Qxc5 > 8 11.83 -0.08 1. ... Qc7 2. Re1 f5 3. Nd2 Bxc5 4. > Qc4+ Kh8 5. Bxf5 Rxf5 6. Qxc5 > 8-> 12.60 -0.08 1. ... Qc7 2. Re1 f5 3. Nd2 Bxc5 4. > Qc4+ Kh8 5. Bxf5 Rxf5 6. Qxc5 > 9 17.20 0.00 1. ... Qc7 2. Re1 Bc6 3. Bd3 f5 4. > Nd2 Bg5 <HT> > 9 20.54 -0.01 1. ... Rd8 2. Bd3 Rd5 3. Bc4 Rdd8 4. > Bd3 > 9-> 24.38 -0.01 1. ... Rd8 2. Bd3 Rd5 3. Bc4 Rdd8 4. > Bd3 > 10 39.70 0.04 1. ... Rd8 2. Bd3 Qe6 3. b3 Qc6 4. > Nd2 Rd5 5. f4 Rfd8 6. fxe5 Bxc5 > 10 1:03 -0.03 1. ... Qc7 2. Re1 Bd5 3. f4 Rb8 4. > Nd6 Bxd6 5. cxd6 Qxd6 6. fxe5 Qe7 > 10-> 1:37 -0.03 1. ... Qc7 2. Re1 Bd5 3. f4 Rb8 4. > Nd6 Bxd6 5. cxd6 Qxd6 6. fxe5 Qe7 > 11 1:37 1/37* 1. ... Qc7 > > >Stuart Your assessment sounds good. Rebel 12 did select this move for a time and then changed its mind.
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.