Incorrect comments by Kavalek :Carlsen's Bxf7+!!

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RadioSmall
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Posts: 273
Joined: Fri Jul 02, 2010 7:12 pm

Incorrect comments by Kavalek :Carlsen's Bxf7+!!

Post by RadioSmall »

According to www.chessbase.com .GM Kavalek in his Huffington post columnn makes the comment that Computer Engines could not come up quickly with Carlsen's Bishop sacrifice : Lets See:
[fen]2r1k2r/2q2pp1/2n1p3/1p1pP1BB/n1pP4/2P3P1/1P3PK1/R2Q3R [/fen]

Fritz 11 takes 1 hour 25 minutes on my Dual Core 2 GIG:
80: Carlsen,M - Wang Hao, 73rd Tata Steel GMA 2011
2r1k2r/2q2pp1/2n1p3/1p1pP1BB/n1pP4/2P3P1/1P3PK1/R2Q3R w k - 0 1

Analysis by Fritz 11:

24.Bg4 Rg8 25.Qc2 Ra8 26.Qh7 Ne7 27.Bh5 Qb6 28.Qc2
+- (2.44) Depth: 9/22 00:00:00 114kN
24.Bg4 Rg8 25.Qc2 Ra8 26.b3 cxb3 27.Qxb3 Ra7 28.Be2 f6 29.exf6 gxf6
+- (2.50) Depth: 10/28 00:00:00 221kN
24.Bg4 Rg8 25.Qc2 Qd7 26.Be2 Ra8 27.Bf3 Ne7 28.b3 cxb3 29.Qxb3 Nf5
+- (2.41) Depth: 11/27 00:00:00 421kN
24.Bg4 Rg8 25.Qc2 Qd7 26.Rh7 Ra8 27.b3 cxb3 28.Qxb3 Ra5 29.Qc2 Ra8 30.Bf3
+- (2.45) Depth: 12/27 00:00:00 810kN
24.Bg4 Rg8 25.Qc2 Ne7 26.Rh7 Ra8 27.b3 cxb3 28.Qxb3 Qc4 29.Qc2 Kd7 30.Be2 Qxc3 31.Bxb5+
+- (2.52) Depth: 13/29 00:00:01 1968kN
24.Bg4 Rg8 25.Qc2 Ne7 26.Rh7 Ra8 27.Be2 Ra5 28.Rah1 Nf5 29.Bg4 Nh6 30.Bxe6 fxe6 31.Bxh6
+- (2.50) Depth: 14/34 00:00:03 4427kN
24.Bg4 Rg8 25.Qc2 Ne7 26.Be2 Qb7 27.Rh7 Nf5 28.Rah1 Ra8 29.Bg4 b4 30.Rh8 Ne7 31.Qh7
+- (2.45) Depth: 15/31 00:00:05 8017kN
24.Bg4 Rg8 25.Qc2 Kd7 26.b3 Nb6 27.b4 Rh8 28.Rh7 Rcg8 29.Rah1 Qb8 30.Qb1 Na4 31.Qc2 Rxh7 32.Rxh7
+- (2.38) Depth: 16/37 00:00:15 22449kN
24.Bg4 Rg8 25.Qc2 Kd7 26.b3 Nb6 27.b4 Rh8 28.Rh7 Rcg8 29.Rah1 Qb8 30.Qd2 Rxh7 31.Rxh7 Qc7 32.Qf4 Kc8
+- (2.34) Depth: 17/39 00:00:39 55817kN
24.Bg4 Rg8 25.Qc2 Kd7 26.Rh7 Ra8 27.Bh5 Ke8 28.Ra2 Ra6 29.Bf3 b4 30.Rh1 b3 31.Qh7 Rf8
+- (2.31) Depth: 18/39 00:01:21 123mN
24.Bg4 Rg8 25.Ra2 Ra8 26.b3 cxb3 27.Qxb3 Ra5 28.Raa1 Rf8 29.Qa3 Rg8 30.Qc1 Ra8 31.Be2 Ra5 32.Bd3
+- (2.34) Depth: 19/38 00:02:39 251mN
24.Bg4 Rg8 25.Ra2 Ra8 26.b3 cxb3 27.Qxb3 Ra5 28.Raa1 Rf8 29.Be2 Kd7 30.Bf3 Ke8 31.Bg4 Qb7 32.Be3 Qa6 33.Be2 f6 34.Bh5+
+- (2.37) Depth: 20/41 00:04:13 405mN
24.Bg4 Rg8 25.Ra2 Ne7 26.Qc2 Qb7 27.Qh7 Ra8 28.Be2 Kf8 29.Qc2 Nf5 30.Rh7 Ke8 31.Bg4 Ne7 32.Ra1 Nc6 33.Rh4 Kd7 34.Ra2 Ne7
+- (2.31) Depth: 21/44 00:19:47 1949mN
24.Qe2 Rg8 25.Qc2 Ne7 26.Bg4 Ra8 27.Rh7 Kd7 28.Ra3 Ke8 29.Bf3 Ra6 30.Ra1
+- (2.33) Depth: 21/45 00:28:08 2763mN
24.Qe2 Qd7 25.Bf3 Rg8 26.Qc2 Ne7 27.Rh7 Qc6 28.Be2 Ra8 29.Bg4 Kd7 30.Rc1 Ke8
+- (2.37) Depth: 22/47 00:44:15 4372mN
24.Qe2 Qd7 25.Qc2 Qb7 26.Bg4 Rg8 27.Rh4 Ne7 28.Rh7 Qc6 29.Bd2 Ra8 30.Rah1 Kd7 31.Bg5 Ke8 32.Bd2
+- (2.37) Depth: 23/46 01:13:26 7149mN
24.Bxf7+ Kxf7 25.Qf3+ Kg8 26.Rxh8+ Kxh8 27.Rh1+ Kg8 28.Qh5 Nxe5 29.Bf4 Rf8 30.Qh7+ Kf7 31.Bxe5 Qe7 32.Bxg7 Ke8 33.Bxf8
+- (3.49) Depth: 23/47 01:25:27 8437mN
24.Bxf7+ Qxf7 25.Rxh8+ Kd7 26.Rxc8 Kxc8 27.Qc2 Kb7 28.b3 cxb3 29.Qxb3 Ka6 30.Qa3 Kb6 31.Qd6 Qe8 32.Rb1 Qc8 33.Qa3
+- (4.29) Depth: 24/47 01:31:33 9127mN
24.Bxf7+ Qxf7 25.Rxh8+ Kd7 26.Rxc8 Kxc8 27.Qc2 Kb7 28.b3 cxb3 29.Qxb3 Ka6 30.Qa3 Kb6 31.Qd6 Qe8 32.Rb1 Qc8 33.Rb3
+- (4.35) Depth: 25/47 01:41:12 10208mN
24.Bxf7+ Qxf7 25.Rxh8+ Kd7 26.Rxc8 Kxc8 27.Qc2 Kb7 28.Rh1 Kb6 29.f4 Ka5 30.Rh8 g6 31.b3 cxb3 32.Ra8+ Na7 33.Qxb3 Ka6 34.Qb4
+- (4.48) Depth: 26/49 02:01:22 12185mN
24.Bxf7+ Qxf7 25.Rxh8+ Kd7 26.Rxc8 Kxc8 27.Qc2 Kb7 28.Rh1 Kb6 29.f4 Ka5 30.Rh8 Qd7 31.b3 cxb3 32.Ra8+ Na7 33.Qxb3 Ka6 34.Rd8 Qf7
+- (4.75) Depth: 27/51 02:43:53 16280mN
24.Bxf7+ Qxf7 25.Rxh8+ Kd7 26.Rxc8 Kxc8 27.Qc2 Kb7 28.Rh1 Kb6 29.f4 Ka5 30.Rh8 g6 31.b3 cxb3 32.Ra8+ Na7 33.Qxb3 Ka6 34.Qb4 Qf5
+- (4.78) Depth: 28/54 03:48:20 23217mN

So 1 hour 25 minutes for Fritz 11 .Now look at Chessmaster GM Ed:
Time Depth Score Positions Moves
0:00 1/3 1.00 1285 24.Qe2 Nb6 25.Bg4
0:00 1/3 1.03 2110 24.Be2 Rxh1 25.Qxh1
0:00 1/4 1.08 7870 24.Qd2 Ra8 25.Bf3 Kd7
0:00 1/5 1.06 21101 24.Qc2 Ra8 25.f3 Ne7 26.Kf2
0:49 2/12 1.29 18455865 24.Bg4 Rg8 25.Qd2 Ra8 26.Bf3 Nb6
27.Rxa8+ Nxa8 28.Kg1 Nb6 29.Bg2
Kf8 30.Rh2
1:09 2/12 1.74 26580209 24.Bxf7+ Kxf7 25.Qf3+ Kg8 26.Rxh8+
Kxh8 27.Qh5+ Kg8 28.Rh1 Rf8 29.Qh7+
Kf7 30.Rh6 Nd8 31.Qg6+ Kg8 32.Bxd8
Qxd8 33.Qh7+ Kf7 34.Rf6+ Qxf6 35.exf6
Kxf6 36.Qh4+ Kf7 37.Qf4+ Kg8 38.Qd6
We have 1 minute and 9 seconds.
GM's should exercise great care when talking about computer chess in public.It looks like this particular GM believes that CHESSBASE= Compterchess. This is a false equation !! CHESSBASE PROGRAMS ARE NOT THE WHOLE OF COMPUTER CHESS. He should have said chessbase programs do not find this tactic at tournament time controls!!!
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Ted Summers
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Location: Marietta, GA
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Post by Ted Summers »

Image
2r1k2r/2q2pp1/2n1p3/1p1pP1BB/n1pP4/2P3P1/1P3PK1/R2Q3R w k - 0 1

Analysis by Spike 1.4:

1.Bg4 Rg8 2.Qc2 Ne7 3.Rh7 Qd7 4.Rah1 Ng6 5.f4 Ne7 6.Rh8 Kf8 7.Rxg8+ Nxg8 8.Rh8 Ra8 9.Bxe6 fxe6 10.Qh7
+- (1.41) Depth: 6 00:00:00 23kN
+/- (1.20 --) Depth: 19 00:00:59 41117kN

1.Qc2 Ne7 2.Rh2 Rg8 3.Rah1 Kf8 4.Bg4 Re8 5.Rh7 Ng6 6.Bh5 Ne7 7.Re1 Qb7 8.Kf1 Qd7 9.Rd1 Rb8 10.b3 cxb3 11.Qxb3 Ra8
+/- (1.34) Depth: 19 00:01:19 61750kN
+/- (1.24 --) Depth: 21 00:01:43 85756kN

1.Bxf7+ Kxf7 2.Qf3+ Kg8 3.Rxh8+ Kxh8 4.Qh5+ Kg8 5.Rh1 Ne7 6.Bxe7 Qxe7 7.Qh8+ Kf7 8.Qxc8 Qe8 9.Qxe8+ Kxe8 10.Rb1 Kd7 11.f4 Kc6 12.Kf3 Kd7 13.Kg4 Ke7 14.f5 Kf7 15.Kf4 Nb6 16.Rh1
+/- (1.40 ++) Depth: 21 00:01:45 90970kN
+- (4.40) Depth: 22 00:02:08 139mN
"Good decisions come from experience, and experience come from bad decisions."
RadioSmall
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Posts: 273
Joined: Fri Jul 02, 2010 7:12 pm

Post by RadioSmall »

Ted Summers wrote:Image
2r1k2r/2q2pp1/2n1p3/1p1pP1BB/n1pP4/2P3P1/1P3PK1/R2Q3R w k - 0 1

Analysis by Spike 1.4:

1.Bg4 Rg8 2.Qc2 Ne7 3.Rh7 Qd7 4.Rah1 Ng6 5.f4 Ne7 6.Rh8 Kf8 7.Rxg8+ Nxg8 8.Rh8 Ra8 9.Bxe6 fxe6 10.Qh7
+- (1.41) Depth: 6 00:00:00 23kN
+/- (1.20 --) Depth: 19 00:00:59 41117kN

1.Qc2 Ne7 2.Rh2 Rg8 3.Rah1 Kf8 4.Bg4 Re8 5.Rh7 Ng6 6.Bh5 Ne7 7.Re1 Qb7 8.Kf1 Qd7 9.Rd1 Rb8 10.b3 cxb3 11.Qxb3 Ra8
+/- (1.34) Depth: 19 00:01:19 61750kN
+/- (1.24 --) Depth: 21 00:01:43 85756kN

1.Bxf7+ Kxf7 2.Qf3+ Kg8 3.Rxh8+ Kxh8 4.Qh5+ Kg8 5.Rh1 Ne7 6.Bxe7 Qxe7 7.Qh8+ Kf7 8.Qxc8 Qe8 9.Qxe8+ Kxe8 10.Rb1 Kd7 11.f4 Kc6 12.Kf3 Kd7 13.Kg4 Ke7 14.f5 Kf7 15.Kf4 Nb6 16.Rh1
+/- (1.40 ++) Depth: 21 00:01:45 90970kN
+- (4.40) Depth: 22 00:02:08 139mN
Nice try Ted : But look at the Depth of Spike 21 plys vs 12 plys for Chessmaster.Also Chessmaster is still quicker 1 minute 9 seconds vs 1 minute 45 seconds for Spike. I believe that Chessmaster is still the most accurate program for the analysis of HUMAN GAMES.
Cubeman
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Posts: 460
Joined: Tue Jul 31, 2007 10:50 pm

Post by Cubeman »

I think Ted was just helping your post by showing how wrong Kavalek was by showing another engine.The judgment on what engine is best for analysing Human games is more of a personal opinion.The King engine is quite a strong engine and I remember the times that there were dedicated Saitek RISC computers that would solve incredibly hard mate puzzles in very fast time.
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