Test Position: Shirov-Eljanov analysis

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Albert Silver
Posts: 3019
Joined: Wed Mar 08, 2006 9:57 pm
Location: Rio de Janeiro, Brazil

Test Position: Shirov-Eljanov analysis

Post by Albert Silver »

Shirov won a nice game today, and played several moves that were not easily found by engines. During analysis of one of Eljanov's possible attempts to defend, this position could have occurred:

[D]4rr1k/2q2pp1/p1NRp1b1/1pn1P3/5Q1P/2P1PB2/P7/5RK1 w - - 0 25

White's strongest continuation is 25.h5! Bf5 26.h6!
"Tactics are the bricks and sticks that make up a game, but positional play is the architectural blueprint."
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jdart
Posts: 4366
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: Test Position: Shirov-Eljanov analysis

Post by jdart »

Arasan 12.2 can find it but it takes a long time:

"Shirov-Eljanov, 2010 (analysis)" bm h5
0 0.04 Rfd1 -0.80 51066
0 0.04 Bg2 -0.52 51075
1 0.04 Qd4 -0.76 51130
2 0.04 Qd4 -0.76 51173
3 0.04 Qd4 -0.76 51225
4 0.04 Qd4 -0.36 52487
5 0.06 Qd4 -0.32 58721
6 0.06 Qd4 -0.36 65101
7 0.09 Qd4 -0.28 93829
8 0.12 Qd4 -0.20 141146
9 0.15 Qd4 -0.16 227473
10 0.20 Qd4 -0.12 352012
11 0.34 Qd4 +0.17 725396
12 0.53 Qd4 +0.33 1179597
13 0.76 Qd4 +0.35 1847237
14 1.45 Qd4 +0.32 3787330
15 2.28 Qd4 +0.08 6217566
16 4.67 Qd4 +0.05 13353966
17 11.26 Qd4 +0.31 30973792
18 19.87 Qd4 +0.32 54996786
19 78.45 Qd4 +0.33 205572760
20 152.75 Qd4 +0.32 416986060
21 236.40 Qd4 +0.32 669395911
22 359.89 Qd4 +0.40 1035564211
23 608.98 Qd4 +0.47 1802341140
23 1628.62 h5 +0.68 4903069967
2.95M nodes/second.
0 tablebase probes, 0 tablebase hits
8832 splits, average thread usage=4.01
result: h5 score: +0.68 ++ solved in 1628.62 sec. (4903.07M node
s)
h5 Bh7 h6 Rg8 Qd4 gxh6+ Kf2 Qb6 Nb4 Qa7 Rh1 a5 Nc6 Qb6 Rxh6 Rg7 Nb4 Qc7 Rc6 Qd8
Rxc5 axb4 Bc6 Qxd4 cxd4

solution times:
0 1 2 3 4 5 6 7 8 9

0 | 1628.62

correct : 1/1
nodes to solution : 4903.07M
depth to solution : 22.00
time to solution : 1628.62 sec.
test complete
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User avatar
meschle
Posts: 200
Joined: Tue Apr 01, 2008 11:53 pm

Re: Test Position: Shirov-Eljanov analysis

Post by meschle »

Komodo does well in this position

New game
4rr1k/2q2pp1/p1NRp1b1/1pn1P3/5Q1P/2P1PB2/P7/5RK1 w - - 0 1

Analysis by Komodo64 1.2 JA:

1.Qd4 Na4 2.Rd1 Bc2 3.Rd7 Qb6 4.Qxb6
+/- (0.73) Depth: 6 00:00:00 12kN
1.Qd4 Na4 2.Rd1 Bc2 3.Rd7 Qb6 4.Qxb6
+/- (0.73) Depth: 6 00:00:00 15kN
1.Qd4 Na4 2.Rd1 Bc2 3.Rd2 Bf5 4.Rd7 Qb6 5.Qxb6
+/- (0.74) Depth: 7 00:00:00 20kN
1.Qd4 Na4 2.Rd1 Bc2 3.Rd2 Bf5 4.Rd7 Qb6 5.Qxb6
+/- (0.74) Depth: 7 00:00:00 23kN
1.Qd4 Na4 2.h5 Bc2 3.Rf2 Bf5 4.Rd7 Qb6
+/= (0.53) Depth: 8 00:00:00 47kN
1.Qd4 Na4 2.h5 Bc2 3.Rf2 Bf5 4.Rd7 Qb6
+/= (0.53) Depth: 8 00:00:00 58kN
1.Qd4 Na4 2.h5 Bc2 3.Nb4 Bf5 4.Bc6 Rc8 5.e4 Bg4 6.Nxa6
+/= (0.49) Depth: 9 00:00:00 101kN
1.Qd4 Na4 2.h5 Bc2 3.Nb4 Bf5 4.Bc6 Rc8 5.e4 Bg4 6.Nxa6
+/= (0.49) Depth: 9 00:00:00 107kN
1.Qd4 Na4 2.h5 Bf5 3.e4 Bh7 4.c4 Nb6 5.cxb5 axb5 6.Be2 Ra8
+/= (0.41) Depth: 10 00:00:00 199kN
1.Qd4 Na4 2.h5 Bf5 3.e4 Bh7 4.c4 Nb6 5.cxb5 axb5 6.Be2 Ra8
+/= (0.41) Depth: 10 00:00:00 407kN
1.Qd4 Na4 2.h5 Bf5 3.Rf2 Kg8 4.Rg2 Kh8 5.e4 Bh7 6.Qe3 Kg8 7.h6
+/= (0.51) Depth: 11 00:00:00 732kN
1.Rfd1 Bc2 2.R1d2 Bh7 3.h5 Qb7 4.Rd1 Qc7 5.Qd4 Qb6 6.Nb4 Qc7 7.Nxa6
+/= (0.58) Depth: 11 00:00:01 930kN
1.Rfd1 Bc2 2.R1d2 Bh7 3.h5 Qb7 4.Rd1 Qc7 5.Qd4 Qb6 6.Nb4 Qc7 7.Nxa6
+/= (0.58) Depth: 11 00:00:01 976kN
1.Rfd1 Bc2 2.R1d2 Bf5 3.Qd4 Na4 4.e4 Bg6 5.h5 Bh7 6.c4 Nb6 7.cxb5 axb5 8.Qe3
+/= (0.55) Depth: 12 00:00:01 1631kN
1.Rfd1 Bc2 2.R1d2 Bf5 3.Qd4 Na4 4.e4 Bg6 5.h5 Bh7 6.c4 Nb6 7.cxb5 axb5 8.Qe3
+/= (0.55) Depth: 12 00:00:02 1819kN
1.Rfd1 Bc2 2.R1d2 Bf5 3.h5 Bh7 4.h6 Rg8 5.Qd4 gxh6+ 6.Kh2 Na4 7.Rd7 Qb6 8.Rxf7 Qxd4 9.cxd4 Nc3
+/= (0.55) Depth: 13 00:00:02 2091kN
1.Rfd1 Bc2 2.R1d2 Bf5 3.h5 Bh7 4.h6 Rg8 5.Qd4 gxh6+ 6.Kh2 Na4 7.Rd7 Qb6 8.Rxf7 Qxd4 9.cxd4 Nc3
+/= (0.55) Depth: 13 00:00:02 2223kN
1.Rfd1 Bc2 2.R1d2 Bh7 3.h5 f5 4.Rg2 Ne4 5.Bxe4 fxe4 6.Qh4 Kg8 7.h6 Rf7 8.a3 Bf5 9.Kh2 a5 10.hxg7 Rxg7
+/= (0.50) Depth: 14 00:00:03 3346kN
1.Qd4 Na4 2.c4 bxc4 3.Qxc4 Nb6 4.Qxa6 Bf5 5.e4 Ra8 6.Qe2 Bh3 7.Rc1 Nc8 8.Rdd1 Ne7 9.Nxe7 Qxe7 10.Qf2
+/= (0.67) Depth: 14 00:00:04 4305kN
1.Qd4 Na4 2.c4 bxc4 3.Qxc4 Nb6 4.Qxa6 Bf5 5.e4 Ra8 6.Qe2 Bh3 7.Rc1 Nc8 8.Rdd1 Ne7 9.Nxe7 Qxe7 10.Qf2
+/= (0.67) Depth: 14 00:00:05 4415kN
1.Qd4 Na4 2.c4 Qb6 3.cxb5 axb5 4.Ne7 Qc7 5.Nxg6+ fxg6 6.Rd7 Qb6 7.Kg2 Qxd4 8.Rxd4 Nc3 9.Bc6 Rxf1 10.Bxe8 Re1 11.Rd8
+/= (0.62) Depth: 15 00:00:07 7058kN
1.Qd4 Na4 2.c4 Qb6 3.cxb5 axb5 4.Ne7 Qc7 5.Nxg6+ fxg6 6.Rd7 Qb6 7.Kg2 Qxd4 8.Rxd4 Nc3 9.Bc6 Rxf1 10.Bxe8 Re1 11.Rd8
+/= (0.62) Depth: 15 00:00:08 7273kN
1.Qd4 Na4 2.c4 bxc4 3.Qxc4 Nb6 4.Qxa6 Bf5 5.Rc1 Ra8 6.Qe2 Ra3 7.e4 Bh7 8.Kg2 f5 9.Qb2 Rxf3 10.Kxf3 fxe4+ 11.Kg2 e3 12.Kg1 Rf2 13.Qd4
+/= (0.70) Depth: 16 00:00:10 9732kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh1 Na4 5.Rd7 Qc8 6.Rxf7 Ref8 7.Rf6 Rxf6 8.exf6 e5 9.Qh4 Qf5 10.Ne7 Qg5 11.Qxg5 Rxg5 12.Rc1 Nc5
+/- (0.78) Depth: 16 00:00:13 12233kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh1 Na4 5.Rd7 Qc8 6.Rxf7 Ref8 7.Rf6 Rxf6 8.exf6 e5 9.Qh4 Qf5 10.Ne7 Qg5 11.Qxg5 Rxg5 12.Rc1 Nc5
+/- (0.78) Depth: 16 00:00:13 12377kN
1.h5 Bf5 2.h6 Rg8 3.Rfd1 gxh6+ 4.Kf2 Rg5 5.Qd4 Na4 6.Rd7 Qb6 7.Nd8 Bg6 8.Nxf7+ Bxf7 9.Rxf7 Qxd4 10.cxd4 Nb2 11.Rh1 Kg8 12.Rc7 Nd3+ 13.Ke2
+/- (0.82) Depth: 17 00:00:30 27336kN
1.h5 Bf5 2.h6 Rg8 3.Rfd1 gxh6+ 4.Kf2 Rg5 5.Qd4 Na4 6.Rd7 Qb6 7.Nd8 Bg6 8.Nxf7+ Bxf7 9.Rxf7 Qxd4 10.cxd4 Nb2 11.Rh1 Kg8 12.Rc7 Nd3+ 13.Ke2
+/- (0.82) Depth: 17 00:00:30 27439kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qc8 6.Rxf7 Ref8 7.Be4 Rxf7 8.Rxf7 Bxe4 9.Qxe4 Rg7 10.Ne7 Qe8 11.Ng6+ Kh7 12.Nf4+ Kg8 13.Rxg7+ Kxg7 14.Qb7+ Kg8 15.Qxa6
+/= (0.68) Depth: 18 00:01:25 73613kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qc8 6.Rxf7 Ref8 7.Be4 Rxf7 8.Rxf7 Bxe4 9.Qxe4 Rg7 10.Ne7 Qe8 11.Ng6+ Kh7 12.Nf4+ Kg8 13.Rxg7+ Kxg7 14.Qb7+ Kg8 15.Qxa6
+/= (0.68) Depth: 18 00:01:31 79536kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qc8 6.Ne7 Rxe7 7.Rxe7 Qf8 8.Rc7 Qg7 9.Qf4 Bg6 10.Rg1 Nb6 11.Qf6 Qxf6 12.exf6 Kh7 13.Rd1 Nc4 14.e4 e5
+/- (0.94) Depth: 19 00:01:36 84359kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qc8 6.Ne7 Rxe7 7.Rxe7 Qf8 8.Rc7 Qg7 9.Qf4 Bg6 10.Rg1 Nb6 11.Qf6 Qxf6 12.exf6 Kh7 13.Rd1 Nc4 14.e4 e5
+/- (0.94) Depth: 19 00:01:37 84709kN

So does rybka winfinder

New game
4rr1k/2q2pp1/p1NRp1b1/1pn1P3/5Q1P/2P1PB2/P7/5RK1 w - - 0 1

Analysis by Rybka WinFinder 2.2 mp:

1.Qd4 Na4
+/= (0.65) Depth: 6 00:00:00 6kN
1.Qd4 Na4 2.h5
+/= (0.48) Depth: 7 00:00:00 7kN
1.Qd4 Na4 2.Rd7 Qb6
+/= (0.32) Depth: 8 00:00:00 16kN
1.h5 Bd3 2.Rd1 Bc2
+/= (0.48) Depth: 8 00:00:00 35kN
1.h5 Bd3 2.Rd1 Bc2 3.R1d2
+/= (0.48) Depth: 9 00:00:00 49kN
1.h5 Bd3 2.Rd1 Bc2 3.R1d2 Bf5
+/= (0.56) Depth: 10 00:00:00 134kN
1.h5 Bd3 2.Rd1 Bc2 3.R1d2 Bf5 4.Qd4
+/= (0.56) Depth: 11 00:00:01 217kN
1.h5 Bf5 2.Rfd1 Bc2 3.R1d2 Bf5 4.Qd4 Na4
+/= (0.56) Depth: 12 00:00:03 654kN
1.h5 Bf5 2.Rfd1 Bh7 3.h6 gxh6 4.Kh2 Rg8 5.Qd4
+/= (0.65) Depth: 13 00:00:05 1137kN
1.h5 Bf5 2.Rfd1 Bh7 3.h6 gxh6 4.Kh2 Rg8 5.Qd4 Na4 6.Rd7
+/= (0.65) Depth: 14 00:00:07 1607kN
1.h5 Bf5 2.Rfd1 Na4 3.h6 g5 4.Qb4 Qb6 5.R1d4 Qc5 6.e4
+/- (0.73) Depth: 15 00:00:20 4423kN
1.h5 Bf5 2.h6 Rg8 3.Kh1 Nd3 4.Qd4 gxh6 5.e4 Bh3 6.Qxd3 Bxf1
+/= (0.65) Depth: 16 00:00:40 8929kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 Na4 4.Rd7 gxh6+ 5.Kh2 Qb6 6.Qf4 Rg7 7.Rxf7 Reg8
+/- (0.81) Depth: 17 00:01:36 21288kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 Na4 4.Rd7 Qb6 5.Ne7 Rd8 6.Qxb6 Nxb6 7.Rb7 gxh6+
+/- (0.73) Depth: 18 00:02:24 31695kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kf2 Qb6 5.Qh4 Rg7 6.Qxh6 Rg6 7.Qf4 Rg7
+/- (0.73) Depth: 19 00:04:24 58436kN
Regards Mark

Quad Q6600 3.0 Ghz, Vista 64bit, 4gb Ram
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User avatar
Kirk
Posts: 5699
Joined: Sat Mar 11, 2006 3:44 am

Re: Test Position: Shirov-Eljanov analysis

Post by Kirk »

Albert Silver wrote:Shirov won a nice game today, and played several moves that were not easily found by engines. During analysis of one of Eljanov's possible attempts to defend, this position could have occurred:

[D]4rr1k/2q2pp1/p1NRp1b1/1pn1P3/5Q1P/2P1PB2/P7/5RK1 w - - 0 25

White's strongest continuation is 25.h5! Bf5 26.h6!
Takes Shredder 10 just under 2 minutes

1/01 0:00 +0.22 1.Rfd1 (1) 0
2/05 0:00 +0.04 1.Rfd1 Bf5 (108) 6
3/07 0:00 +0.13 1.Rfd1 Bf5 2.Kf2 (529) 33
4/08 0:00 +0.05 1.Rfd1 Bf5 2.Kf2 Kg8 (1.436) 89
4/09 0:00 +0.08++ 1.Qd4 (2.121) 132
4/10 0:00 +0.10 1.Qd4 Nd3 2.Be2 Nb2 (2.615) 163
5/09 0:00 +0.20 1.Qd4 Nd3 2.Rd7 Qc8 3.Bg2 (3.922) 245
6/14 0:00 +0.45++ 1.Qd4 Nd3 (9.355) 292
6/14 0:00 +0.60 1.Qd4 Qb6 2.Nb4 Qa7 3.Nxa6 Rc8 (11.427) 357
7/17 0:00 +0.44 1.Qd4 Na4 2.c4 (26.273) 417
8/14 0:00 +0.68 1.Qd4 Na4 2.c4 bxc4 (51.005) 463
9/18 0:00 +0.93++ 1.Qd4 Na4 (83.907) 446
9/20 0:00 +0.93 1.Qd4 Na4 (96.583) 475
10/20 0:00 +0.71 1.Qd4 Na4 2.c4 bxc4 3.Qxc4 Nb6 4.Qxa6 Ra8 5.Qe2 Kg8 (155.985) 475
11/18 0:00 +0.57 1.Qd4 Na4 2.c4 bxc4 3.Qxc4 Nb6 4.Qxa6 Ra8 (301.841) 495
12/21 0:01 +0.82++ 1.Qd4 Na4 (706.497) 508
12/23 0:01 +0.98 1.Qd4 Na4 2.c4 Qc8 3.c5 (948.558) 510
13/27 0:03 +0.73-- 1.Qd4 Na4 (1.566.548) 502
13/27 0:04 +0.65 1.Qd4 Na4 2.c4 bxc4 3.Qxc4 Nb6 4.Qxa6 Ra8 5.Qb5 Ra3 6.Nb4 Nc8 (2.082.610) 499
14/28 0:07 +0.90++ 1.Qd4 Na4 (3.404.012) 481
14/28 0:09 +0.98 1.Qd4 Na4 2.c4 bxc4 3.Qxc4 Nb6 4.Qxa6 Ra8 5.Qb5 Ra3 6.Nb4 Nc8 7.Rc6 (4.367.211) 482
15/30 0:16 +0.79 1.Qd4 Na4 2.c4 bxc4 3.Qxc4 Nb6 4.Qxa6 Ra8 5.Qb5 Ra3 6.Nb4 Nc8 7.Rc6 (7.906.911) 483
16/32 0:35 +1.03 1.Qd4 Na4 2.c4 bxc4 3.Qxc4 Nb6 4.Qxa6 Ra8 5.Qb5 Ra3 6.Nb4 Nc8 7.Rc6 (17.181.973) 484
17/38 0:54 +0.79 1.Qd4 Na4 2.c4 bxc4 3.Qxc4 Nb6 4.Qxa6 Ra8 5.Qb5 Ra3 6.Bg2 (26.750.160) 488
17/42 1:58 +0.80++ 1.h5 (57.942.260) 490 SB:2
“He knew all the tricks, dramatic irony, metaphor, pathos, puns, parody, litotes and... satire. He was vicious”
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De Vos W
Posts: 431
Joined: Tue Dec 01, 2009 11:59 am

Re: Test Position: Shirov-Eljanov analysis

Post by De Vos W »

Albert Silver wrote:Shirov won a nice game today, and played several moves that were not easily found by engines. During analysis of one of Eljanov's possible attempts to defend, this position could have occurred:

[D]4rr1k/2q2pp1/p1NRp1b1/1pn1P3/5Q1P/2P1PB2/P7/5RK1 w - - 0 25

White's strongest continuation is 25.h5! Bf5 26.h6!

Houdini 1.h5 in zero second !!!
4rr1k/2q2pp1/p1NRp1b1/1pn1P3/5Q1P/2P1PB2/P7/5RK1 w - - 0 1

Analysis by Houdini 1.03a w32 2_CPU:


1.h5 Bf5 2.Rfd1 Ra8 3.h6 Rg8
= (0.15) Depth: 6/13 00:00:00 7kN
1.h5 Bf5 2.Rfd1 Ra8 3.h6 Rg8
= (0.21 ++) Depth: 7/13 00:00:00 9kN
1.h5 Bh7 2.Qd4 Qb6 3.Nb4 Qa7 4.Rxa6 Qe7
= (0.19) Depth: 7/17 00:00:00 14kN
1.h5 Bc2 2.h6 Rg8 3.Bg2 Bf5 4.Qd4 Na4 5.Rd7 Qb6
= (0.18) Depth: 8/21 00:00:00 24kN
1.h5 Bc2 2.h6 Rg8 3.Bg2 Bf5 4.Qd4 Na4 5.Rd7 Qb6
= (0.24 ++) Depth: 9/21 00:00:00 25kN
1.h5 Bd3 2.Rd1 Bc4 3.h6 Rg8 4.h7 Rgf8 5.Qd4 Qb6 6.Qh4 Na4
= (0.24) Depth: 9/21 00:00:00 30kN
1.h5 Bd3 2.Rf2 Bf5 3.h6 Rg8 4.Rg2 Bg6 5.hxg7+ Rxg7 6.Qd4 Na4 7.Qh4+ Kg8
= (0.23) Depth: 10/21 00:00:00 44kN
1.h5 Bd3 2.Rf2 Bf5 3.h6 Rg8 4.Rg2 Bg6 5.hxg7+ Rxg7 6.Qd4 Na4 7.Qh4+ Kg8
+/= (0.29 ++) Depth: 11/25 00:00:00 63kN
1.h5 Bd3 2.Rf2 Bh7 3.h6 Rg8 4.Rg2 a5 5.Qh4 f5 6.hxg7+ Rxg7
+/= (0.36) Depth: 11/33 00:00:00 140kN
1.h5 Bd3 2.Rf2 Bh7 3.h6 Rg8 4.Rg2 a5 5.Qh4 Nb7 6.Rd1 Nc5 7.Kf1 Rc8 8.hxg7+ Rxg7
+/= (0.41 ++) Depth: 12/33 00:00:00 301kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Nb6 4.hxg7+ Kxg7 5.Kf2 Rg8 6.Rg1+ Bg6 7.Be4 Kf8 8.Bxg6 Rxg6 9.Rxg6 fxg6 10.Qg4
+/= (0.34) Depth: 12/33 00:00:00 399kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Nb6 4.hxg7+ Kxg7 5.Kf2 Rg8 6.Rg1+ Bg6 7.Be4 Kf8 8.Bxg6 Rxg6 9.Rxg6 fxg6 10.Qg4
+/= (0.40 ++) Depth: 13/33 00:00:00 433kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Nb6 4.Kf2 Rg8 5.Rh1 Bg6 6.Qh4 Bh7 7.hxg7+ Rxg7 8.Be4 Nc4
+/= (0.41) Depth: 13/33 00:00:00 533kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Nb6 4.Kf2 Rg8 5.Rh1 Bg6 6.Qh4 Bh7 7.hxg7+ Rxg7 8.Be4 Nc4
+/= (0.41) Depth: 14/33 00:00:00 715kN
1.h5 Bh7 2.Qd4 Na4 3.Kf2 Qb6 4.Qf4 Qc7 5.h6 Rg8 6.Qd4 gxh6 7.Rh1 Rg7 8.Rxh6 Nb6 9.Be4 Kg8 10.Bxh7+ Rxh7 11.Qg4+ Rg7 12.Qh5
+/= (0.39) Depth: 15/37 00:00:00 1309kN
1.h5 Bh7 2.Qd4 Na4 3.h6 gxh6 4.Kf2 Rg8 5.Rd7 Qc8 6.Rh1 Rg7 7.Ra7 Nb2 8.Rxh6 Nc4 9.Be4 Rf8 10.Ne7
+/= (0.37) Depth: 16/37 00:00:01 2005kN
1.h5 Bh7 2.Qd4 Na4 3.h6 gxh6 4.Kf2 Rg8 5.Rd7 Qc8 6.Rh1 Rg7 7.Ra7 Nb2 8.Rxh6 Nc4 9.Be4 Rf8 10.Ne7 Qb8
+/= (0.43 ++) Depth: 17/39 00:00:01 2798kN
1.h5 Bh7 2.Qd4 Na4 3.h6 gxh6 4.Kf2 Rg8 5.Rh1 Qb6 6.Rxh6 Qxd4 7.cxd4 Kg7 8.Rf6 Bg6 9.Rd7 Rh8 10.a3 Nc3 11.Ra7 Rh6 12.Rxa6 Rh2+ 13.Kg3 Reh8
+/= (0.42) Depth: 17/47 00:00:03 7115kN
1.h5 Bh7 2.Qd4 Na4 3.h6 gxh6 4.Kf2 Rg8 5.Rh1 Qb6 6.Rxh6 Qxd4 7.cxd4 Kg7 8.Rf6 Bg6 9.Nb4 a5 10.Nc6 Nc3 11.a3 Rh8 12.Nxa5 Rh2+ 13.Kg3 Reh8 14.Rd7 R2h3+ 15.Kf2 Rh2+ 16.Bg2
+/= (0.38) Depth: 18/47 00:00:04 8439kN
1.h5 Bh7 2.Qd4 Na4 3.h6 gxh6 4.Kf2 Rg8 5.Rh1 Qb6 6.Rxh6 Qxd4 7.cxd4 Kg7 8.Rf6 Bg6 9.Nb4 a5 10.Nc6 Nc3 11.a3 Rh8 12.Nxa5 Rh2+ 13.Kg3 Ra2 14.Bc6 Rh8
+/= (0.44 ++) Depth: 19/47 00:00:05 10809kN
1.h5 Bh7 2.Qd4 Na4 3.h6 gxh6 4.Kf2 Rg8 5.Rh1 Qb6 6.Rxh6 Qxd4 7.cxd4 Kg7 8.Rf6 Bg6 9.Na7 Rh8 10.Rxa6 Nc3 11.Kg2 Rh6 12.Rb6 Reh8 13.Nxb5 Ne4 14.Rf4 Rh2+ 15.Kg1
+/= (0.56 ++) Depth: 19/59 00:00:09 18200kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Rg8 4.Rd7 Qb6 5.Rxf7 Qxd4 6.cxd4 gxh6+ 7.Kf2 Nc3 8.Rh1 Rg7 9.Rxh6+ Kg8 10.Rxg7+ Kxg7 11.Rf6 Rf8 12.Rxf8 Kxf8 13.Nb4 a5 14.Nc6 b4 15.Nxa5 Kf7 16.Nc4 Nxa2 17.Nd6+ Ke7 18.Nxf5+ exf5
+/= (0.54) Depth: 19/59 00:00:12 25674kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Rg8 4.Rd7 Qb6 5.Rxf7 Qxd4 6.cxd4 gxh6+ 7.Kf2 Nc3 8.Rh1 Rg7 9.Rxh6+ Kg8 10.Rxg7+ Kxg7 11.Rf6 Rf8 12.Rxf8 Kxf8 13.Nb4 a5 14.Nc6 b4 15.Nxa5 Kf7 16.Nc4 Nxa2 17.Nd6+ Ke7 18.Nxf5+ exf5
+/= (0.54) Depth: 20/59 00:00:14 29428kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Rg8 4.Rd7 Qb6 5.Rxf7 Qxd4 6.cxd4 gxh6+ 7.Kf2 Nc3 8.Rh1 Rg7 9.Rxh6+ Kg8 10.Rxg7+ Kxg7 11.Rf6 Rf8 12.Rxf8 Kxf8 13.Nb4 a5 14.Nc6 b4 15.Nxa5 Kf7 16.Nc4 Nxa2 17.Nd6+ Ke7 18.Nxf5+
+/= (0.62 ++) Depth: 21/64 00:00:27 56701kN

(14.11.2010)
Gods are fragile things; they may be killed by a whiff of science or a dose of common sense.
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Robert Flesher
Posts: 1280
Joined: Tue Aug 18, 2009 3:06 am

Re: Test Position: Shirov-Eljanov analysis

Post by Robert Flesher »

New game
4rr1k/2q2pp1/p1NRp1b1/1pn1P3/5Q1P/2P1PB2/P7/5RK1 w - - 0 1

This version of Komodo is very strong in tactics!

Analysis by Komodo64 10.0828:

1.Rfd1
= (0.18) Depth: 1 00:00:00
1.Rfd1 a5
= (0.19) Depth: 3 00:00:00
1.Rfd1 Bc2 2.R1d2
= (-0.01) Depth: 3 00:00:00
1.Qd4 Nd3 2.Rd1 Nb2
² (0.58) Depth: 4 00:00:00
1.Qd4 Nd3 2.Rd1 Nb2 3.Rd7
² (0.56) Depth: 5 00:00:00
1.Qd4 Nd3 2.Rd1 Nb2 3.Rd7
² (0.56) Depth: 5 00:00:00
1.Qd4 Na4 2.Rd1 Bc2 3.Rd7 Qb6 4.Qxb6
± (0.73) Depth: 6 00:00:00 12kN
1.Qd4 Na4 2.Rd1 Bc2 3.Rd7 Qb6 4.Qxb6
± (0.73) Depth: 6 00:00:00 15kN
1.Qd4 Na4 2.Rd1 Bc2 3.Rd2 Bf5 4.Rd7 Qb6 5.Qxb6
± (0.73) Depth: 7 00:00:00 20kN
1.Qd4 Na4 2.Rd1 Bc2 3.Rd2 Bf5 4.Rd7 Qb6 5.Qxb6
± (0.73) Depth: 7 00:00:00 24kN
1.Qd4 Na4 2.h5 Bc2 3.Rf2 Bf5 4.Rd7 Qb6 5.Rd2
² (0.54) Depth: 8 00:00:00 51kN
1.Qd4 Na4 2.h5 Bc2 3.Rf2 Bf5 4.Rd7 Qb6 5.Rd2
² (0.54) Depth: 8 00:00:00 62kN
1.Qd4 Na4 2.h5 Bc2 3.Rf2 Bf5 4.Rd2 Nb6 5.e4 Bh3 6.Qe3
² (0.49) Depth: 9 00:00:00 92kN
1.Qd4 Na4 2.h5 Bc2 3.Rf2 Bf5 4.Rd2 Nb6 5.e4 Bh3 6.Qe3
² (0.49) Depth: 9 00:00:00 98kN
1.Qd4 Na4 2.h5 Bf5 3.Kf2 Nb6 4.h6 Rg8 5.hxg7+ Rxg7 6.Rg1 Kg8
² (0.37) Depth: 10 00:00:00 227kN
1.Rfd1 Bc2 2.R1d2 Bf5 3.Qd4 Na4 4.e4 Bh7 5.c4 bxc4 6.Qxc4 Qb6+ 7.Qd4
² (0.55) Depth: 10 00:00:00 325kN
1.Rfd1 Bc2 2.R1d2 Bf5 3.Qd4 Na4 4.e4 Bh7 5.c4 bxc4 6.Qxc4 Qb6+ 7.Qd4
² (0.55) Depth: 10 00:00:00 359kN
1.Rfd1 Bc2 2.R1d2 Bf5 3.Qd4 Na4 4.e4 Bh7 5.c4 bxc4 6.Qxc4 Qb6+ 7.Qd4 Qxd4+ 8.R6xd4 Nc3 9.Kg2
² (0.53) Depth: 11 00:00:00 413kN
1.Rfd1 Bc2 2.R1d2 Bf5 3.Qd4 Na4 4.e4 Bh7 5.c4 bxc4 6.Qxc4 Qb6+ 7.Qd4 Qxd4+ 8.R6xd4 Nc3 9.Kg2
² (0.53) Depth: 11 00:00:00 450kN
1.Rfd1 Bc2 2.R1d2 Bh7 3.Qd4 Na4 4.c4 Nb6 5.cxb5 axb5 6.Qc5 Ra8 7.Be2 Bb1 8.Bxb5 Rxa2
² (0.42) Depth: 12 00:00:00 741kN
1.Rfd1 Bc2 2.R1d2 Bh7 3.Qd4 Na4 4.c4 Nb6 5.cxb5 axb5 6.Qc5 Ra8 7.Be2 Bb1 8.Bxb5 Rxa2
² (0.42) Depth: 12 00:00:01 1356kN
1.Rfd1 Rc8 2.R1d2 Bh7 3.Qd4 Na4 4.Na7 Rb8 5.Rxa6 Nxc3 6.Nc6 Nb1 7.Qd7 Rb7 8.Qxc7 Rxc7
² (0.46) Depth: 13 00:00:03 4025kN
1.h5 Bh7 2.Rfd1 f5 3.Qg5 Rg8 4.R1d2 Rgf8 5.Nd8 Kg8 6.h6 Qe7 7.Qxg7+ Qxg7+ 8.hxg7 Kxg7
² (0.55) Depth: 13 00:00:04 6068kN
1.h5 Bh7 2.Rfd1 f5 3.Qg5 Rg8 4.R1d2 Rgf8 5.Nd8 Kg8 6.h6 Qe7 7.Qxg7+ Qxg7+ 8.hxg7 Kxg7
² (0.55) Depth: 13 00:00:04 6242kN
1.h5 Bh7 2.Rfd1 f5 3.Qg5 Rf7 4.Rd8 Rff8 5.R8d2 Qf7 6.Nd8 Qc7 7.Rd6 Kg8 8.h6 Qe7 9.Qxg7+ Qxg7+ 10.hxg7
² (0.53) Depth: 14 00:00:06 7673kN
1.h5 Bh7 2.Rfd1 f5 3.Qg5 Rf7 4.Rd8 Rff8 5.R8d2 Qf7 6.Nd8 Qc7 7.Rd6 Kg8 8.h6 Qe7 9.Qxg7+ Qxg7+ 10.hxg7
² (0.53) Depth: 14 00:00:06 8032kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh1 Na4 5.Rd7 Qc8 6.Ne7 Qxc3 7.Nxg8 Qxd4 8.exd4 Rxg8 9.Rxf7 Nc3 10.Ra7 Bd3 11.Rg1
± (0.74) Depth: 15 00:00:07 10135kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh1 Na4 5.Rd7 Qc8 6.Ne7 Qxc3 7.Nxg8 Qxd4 8.exd4 Rxg8 9.Rxf7 Nc3 10.Ra7 Bd3 11.Rg1
± (0.74) Depth: 15 00:00:07 10259kN
1.h5 Bf5 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qb6 6.Rxf7 Qxd4 7.cxd4 Rg7 8.Rxg7 Kxg7 9.Rg1+ Kh7 10.Nb4 Nc3 11.Rc1 a5 12.Rxc3 axb4
² (0.56) Depth: 16 00:00:10 13932kN
1.h5 Bf5 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qb6 6.Rxf7 Qxd4 7.cxd4 Rg7 8.Rxg7 Kxg7 9.Rg1+ Kh7 10.Nb4 Nc3 11.Rc1 a5 12.Rxc3 axb4
² (0.56) Depth: 16 00:00:11 14982kN
1.h5 Bf5 2.Qd4 Na4 3.Kf2 Nb6 4.h6 Rg8 5.hxg7+ Rxg7 6.Rh1+ Bh7 7.Be4 Kg8 8.Bxh7+ Rxh7 9.Rxh7 Kxh7 10.Nb4 Nc4 11.Nxa6 Qa5 12.Qh4+ Kg8 13.Qg5+ Kf8 14.Qh6+ Kg8
± (0.88) Depth: 17 00:00:16 22064kN
1.h5 Bf5 2.Qd4 Na4 3.Kf2 Nb6 4.h6 Rg8 5.hxg7+ Rxg7 6.Rh1+ Bh7 7.Be4 Kg8 8.Bxh7+ Rxh7 9.Rxh7 Kxh7 10.Nb4 Nc4 11.Nxa6 Qa5 12.Qh4+ Kg8 13.Qg5+ Kf8 14.Qh6+ Kg8
± (0.88) Depth: 17 00:00:17 22198kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qc8 6.Ne7 Rxe7 7.Rxe7 Bg6 8.Ra7 Nxc3 9.Rc1 b4 10.Qxb4 Nxa2 11.Rxc8 Nxb4 12.Rxg8+ Kxg8 13.Kg3 Kg7
² (0.61) Depth: 18 00:00:25 33123kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qc8 6.Ne7 Rxe7 7.Rxe7 Bg6 8.Ra7 Nxc3 9.Rc1 b4 10.Qxb4 Nxa2 11.Rxc8 Nxb4 12.Rxg8+ Kxg8 13.Kg3 Kg7
² (0.61) Depth: 18 00:00:27 35773kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qb6 6.Qf4 Rg7 7.Rxf7 Reg8 8.Rxg7 Rxg7 9.Qxh6 Nxc3 10.Nd4 Rg6 11.Qf8+ Bg8 12.Rg1 Rxg1 13.Qh6+ Bh7 14.Kxg1 Qd8 15.Nxe6 Qg8+ 16.Ng5 Nxa2
± (1.02) Depth: 19 00:00:38 49769kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qb6 6.Qf4 Rg7 7.Rxf7 Reg8 8.Rxg7 Rxg7 9.Qxh6 Nxc3 10.Nd4 Rg6 11.Qf8+ Bg8 12.Rg1 Rxg1 13.Qh6+ Bh7 14.Kxg1 Qd8 15.Nxe6 Qg8+ 16.Ng5 Nxa2
± (1.02) Depth: 19 00:00:38 50049kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qc8 6.Ne7 Rxe7 7.Rxe7 Qf8 8.Rc7 Qg7 9.Qf4 Bf5 10.e4 Bg6 11.Rg1 Nb2 12.Be2 Rd8 13.Qf6 Qxf6 14.exf6 Kh7 15.Bg4 e5 16.Kg3 Nc4
± (0.92) Depth: 20 00:00:42 55409kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qc8 6.Ne7 Rxe7 7.Rxe7 Qf8 8.Rc7 Qg7 9.Qf4 Bf5 10.e4 Bg6 11.Rg1 Nb2 12.Be2 Rd8 13.Qf6 Qxf6 14.exf6 Kh7 15.Bg4 e5 16.Kg3 Nc4
± (0.92) Depth: 20 00:00:43 57243kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qc8 6.Ne7 Rxe7 7.Rxe7 Qf8 8.Rc7 Qg7 9.Qf4 Bf5 10.e4 Bg6 11.Rg1 Nb2 12.Be2 Rd8 13.Qf6 Qxf6 14.exf6 Kh7 15.Bg4 Nc4 16.Bxe6 Ne5
± (1.00) Depth: 21 00:00:47 62063kN
1.h5 Bh7 2.h6 Rg8 3.Qd4 gxh6+ 4.Kh2 Na4 5.Rd7 Qc8 6.Ne7 Rxe7 7.Rxe7 Qf8 8.Rc7 Qg7 9.Qf4 Bf5 10.e4 Bg6 11.Rg1 Nb2 12.Be2 Rd8 13.Qf6 Qxf6 14.exf6 Kh7 15.Bg4 Nc4 16.Bxe6 Ne5
± (1.00) Depth: 21 00:00:48 63205kN

(, Microsoft 14.11.2010)
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jdart
Posts: 4366
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: Test Position: Shirov-Eljanov analysis

Post by jdart »

Long time control analysis (4000 seconds/move):

"Shirov-Eljanov, 2010 (analysis)" bm h5
result: h5 score: +0.95 ++ solved in 1183.39 sec. (3472.33M nodes)
h5 Bh7 h6 Rg8 Qd4 gxh6+
result(2): Qd4 score: +0.44 ** not solved in 4000.11 secs. (
11679.31M nodes)
Qd4 Na4 c4 bxc4 Qxc4 Nb6 Qxa6 Ra8 Qe2 Ra3 h5 Bf5 Rfd1 Rc3 Nd4 Bc2 Rc1 Bd3 Rxc3 Qxc3 Qd1 Nc4 Nxe6 Qxe5 Rxd3 Qxe6
result(3): Rfd1 score: +0.56 ** not solved in 4000.02 secs. (
12127.53M nodes)
Rfd1 f5 c4 Ne4 cxb5 axb5 a3 Bh7 Bxe4 fxe4 Qg5 Rf7 Qh5 Ref8 Nd8 Rf5 Nxe6 Rxh5 Nxc7 Rxe5 R6d5 Rxd5 Rxd5 Rf3 Rd8+ Bg8 Nxb5 Rxe3
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User avatar
beachknight
Posts: 3533
Joined: Tue Jan 09, 2007 8:33 pm
Location: Antalya, Turkey

Re: Test Position: Shirov-Eljanov analysis

Post by beachknight »

Robbo spends around 1 min for the move

4:
4rr1k/2q2pp1/p1NRp1b1/1pn1P3/5Q1P/2P1PB2/P7/5RK1 w - - 0 1

Analysis by Robbolito TA04 analyse x64:


25.Qd4 Na4 26.c4 Rc8 27.cxb5 axb5 28.Rd7 Qb6 29.Ne7 Rc2 30.Nxg6+ fxg6
+/= (0.33) Depth: 10/22 00:00:00 77kN
25.Qd4 Na4 26.c4 Rc8 27.cxb5 axb5 28.Rd7 Qb6 29.Ne7 Rc2 30.Nxg6+ fxg6
+/= (0.34 ++) Depth: 11/24 00:00:00 100kN
25.Qd4 Na4 26.c4 Rc8 27.cxb5 axb5 28.Rd7 Qb6 29.Ne7 Rc2 30.Nxg6+ fxg6
+/= (0.35 ++) Depth: 11/24 00:00:00 112kN
25.Qd4 Na4 26.c4 Rc8 27.cxb5 axb5 28.Rd7 Qb6 29.Ne7 Rc2 30.Nxg6+ fxg6
+/= (0.37 ++) Depth: 11/24 00:00:00 120kN
25.Qd4 Na4 26.c4 bxc4 27.Qxc4[] Nb6[] 28.Qxa6 Ra8 29.Qe2 Nc8 30.Rdd1 Na7 31.Nd4 Rab8
+/= (0.40) Depth: 11/25 00:00:00 141kN
25.Qd4 Na4 26.c4 bxc4 27.Qxc4[] Nb6 28.Qxa6 Ra8 29.Qe2 Nc8 30.Rdd1 Na7 31.Nd4 Rab8
+/= (0.40) Depth: 12/25 00:00:00 179kN
25.Qd4 Na4 26.c4 bxc4 27.Qxc4[] Nb6 28.Qxa6 Ra8 29.Qe2 Nc8 30.Rdd1 Nb6 31.h5 Bf5 32.h6 gxh6
+/= (0.41 ++) Depth: 13/26 00:00:00 389kN
25.Qd4 Na4 26.c4 Nb6 27.c5[] Nc4[] 28.Rd7[] Qc8[] 29.Ne7[] Qb8 30.Nxg6+ fxg6[] 31.Rd6 Qc7 32.Rxa6 Nxe5 33.Bg2 Rxf1+ 34.Kxf1 Nc4 35.Ke2 Rd8
+/= (0.44) Depth: 13/34 00:00:00 603kN
25.Qd4 Na4 26.c4 Nb6 27.c5 Nc4[] 28.Rd7 Qc8[] 29.Ne7 Qb8 30.Nxg6+ fxg6[] 31.Rd6 Qc7 32.Rxa6 Nxe5 33.Bg2 Rxf1+ 34.Kxf1 Nc4 35.Ke2 Rd8
+/= (0.44) Depth: 14/34 00:00:00 790kN
25.Qd4 Na4 26.c4 Nb6 27.c5 Nc4[] 28.Rd7 Qc8[] 29.Ne7 Qb8 30.Nxg6+ fxg6[] 31.Rd6 Qc7 32.Rxa6 Nxe5 33.Bg2 Rxf1+ 34.Kxf1 Nc4 35.Ke2 Rd8
+/= (0.44) Depth: 15/34 00:00:00 1041kN
25.Qd4 Na4 26.c4 Nb6 27.c5 Nc4[] 28.Rd7 Qc8[] 29.Ne7 Qb8 30.Nxg6+ fxg6[] 31.Rd6 Qc7 32.Rxa6 Nxe5 33.Bg2 Rxf1+ 34.Kxf1 Nc4 35.Ke2 Rd8
+/= (0.44) Depth: 16/35 00:00:01 1662kN
25.Qd4 Na4 26.c4 Nb6 27.c5 Nc4[] 28.Rd7 Qc8[] 29.Ne7 Qb8 30.Nxg6+ fxg6[] 31.Rd6 Qc7 32.Rxa6 Nxe5 33.Bg2 Rxf1+ 34.Kxf1 Nc4 35.Ke2 Rd8 36.Ra7 Rxd4 37.Rxc7 Rd2+ 38.Kf3 Rxa2
+/= (0.45 ++) Depth: 17/44 00:00:03 4963kN
25.Qd4 Na4 26.c4 Nb6 27.c5 Nc4[] 28.Rd7 Qc8[] 29.Ne7 Qb8 30.Nxg6+ fxg6[] 31.Rd6 Qc7 32.Rxa6 Nxe5 33.Bg2 Rxf1+ 34.Kxf1 Nc4 35.Ke2 Rd8 36.Ra7 Rxd4 37.Rxc7 Rd2+ 38.Kf3 Rxa2
+/= (0.47 ++) Depth: 17/44 00:00:04 6824kN
25.Qd4 Na4 26.c4 Nb6 27.c5 Nc4[] 28.Rd7 Qc8[] 29.h5 Bf5 30.Bh1 Kg8 31.Rf2 Kh8 32.Ne7 Qb8 33.Nxf5 exf5 34.Rxf5 Rxe5 35.Rfxf7 Rxf7 36.Rd8+ Qxd8 37.Qxd8+ Kh7 38.Bd5
+/= (0.53) Depth: 17/44 00:00:05 8048kN
25.Qd4 Na4 26.c4 Nb6 27.c5 Nc4 28.Rd7 Qc8[] 29.h5 Bf5 30.Bh1 Kg8 31.Rf2 Kh8 32.Ne7 Qb8 33.Nxf5 exf5 34.Rxf5 Rxe5 35.Rfxf7 Rxf7 36.Rd8+ Qxd8 37.Qxd8+ Kh7 38.Bd5
+/= (0.53) Depth: 18/44 00:00:06 9019kN
25.Qd4 Na4 26.c4 Nb6 27.c5 Nc4 28.Rd7 Qc8[] 29.h5 Bf5 30.Bh1 Kg8 31.Rf2 Kh8 32.Ne7 Qb8 33.Nxf5 exf5 34.Rxf5 Rxe5 35.Rfxf7 Rxf7 36.Rd8+ Qxd8 37.Qxd8+ Kh7 38.Bd5
+/= (0.54 ++) Depth: 19/49 00:00:11 16861kN
25.Qd4 Na4 26.c4 Nb6 27.c5 Nc4 28.Rd7 Qc8[] 29.h5 Bf5 30.Bh1 Kg8 31.Rf2 Kh8 32.Ne7 Qb8 33.Nxf5 exf5 34.Rxf5 Rxe5 35.Rfxf7 Rxf7 36.Rd8+ Qxd8 37.Qxd8+ Kh7 38.Bd5
+/= (0.56 ++) Depth: 19/49 00:00:13 18807kN
25.Qd4 Na4 26.c4 Nb6 27.c5 Nc4 28.Rd7 Qc8[] 29.h5 Bf5 30.Bh1 Kg8 31.Rf2 Kh8 32.Ne7 Qb8 33.Nxf5 exf5 34.Rxf5 Rxe5 35.Rfxf7 Rxf7 36.Rd8+ Qxd8 37.Qxd8+ Kh7 38.Bd5
+/= (0.60 ++) Depth: 19/49 00:00:14 21193kN
25.Qd4 Na4 26.c4 bxc4 27.Qxc4[] Nb6[] 28.Qd4 Bh7 29.Nb4 Nd5 30.Nxd5 exd5[] 31.Bxd5 Bg6 32.Rxa6 Qxe5[] 33.Qxe5[] Rxe5[] 34.Rxg6 Rxd5[] 35.a4 Kg8 36.Rc6 f6 37.Rc7 Rb8 38.Kg2 Rb3 39.Re7 Rd2+ 40.Kg3
+/= (0.63) Depth: 19/49 00:00:17 25067kN
25.Qd4 Na4 26.c4 bxc4 27.Qxc4[] Nb6[] 28.Qd4 Nd5 29.h5 Bh7 30.Bxd5 exd5[] 31.Qxd5 Qb6 32.Qd4 Qb5 33.Qg4 Qc5 34.Qf4 Qc2 35.Nb4 Qc8 36.Rfd1 Qh3 37.h6 gxh6 38.Qf6+ Kg8
+/= (0.56) Depth: 20/51 00:00:40 57992kN
25.Qd4 Na4 26.c4 bxc4 27.Qxc4 Nb6[] 28.Qd4 Nd5 29.h5 Bh7 30.Bxd5 exd5[] 31.Qxd5 Qb6 32.Qd4 Qb5 33.Qg4 Qc5 34.Qf4 Qc2 35.Nb4 Qc8 36.Rfd1 Qh3 37.h6 gxh6 38.Qf6+ Kg8
+/= (0.56) Depth: 21/52 00:00:46 66982kN
25.h5
Depth: 21/52 00:01:04 91870kN
25.h5
+/= (0.57 ++) Depth: 21/52 00:01:04 92756kN
25.h5
+/= (0.58 ++) Depth: 21/52 00:01:16 108mN
25.h5
+/= (0.60 ++) Depth: 21/56 00:01:24 121mN
25.h5
+/= (0.64 ++) Depth: 21/56 00:01:40 143mN
25.h5
+/- (0.72 ++) Depth: 21/56 00:01:57 166mN
25.h5
+/- (0.88 ++) Depth: 21/60 00:02:39 225mN
25.h5 Bh7 26.h6 Rg8 27.Qd4[] Na4 28.Rd7 Qb6 29.Ne7 Qxd4 30.cxd4[] Rgf8 31.hxg7+[] Kxg7[] 32.Ra7 Rh8 33.Bc6 Rd8 34.Rxa6 Nc3 35.Rf2 Be4 36.Bxe4 Nxe4 37.Rg2+ Kf8 38.Ra7
+/- (0.86) Depth: 21/60 00:02:48 238mN
25.h5 Bh7 26.h6 Rg8 27.Qd4[] Na4 28.Rd7 Qb6 29.Ne7 Qxd4 30.cxd4[] Rgf8 31.hxg7+[] Kxg7[] 32.Ra7 Rh8 33.Bc6 Rd8 34.Rxa6 Nc3 35.Rf2 Be4 36.Bxe4 Nxe4 37.Rg2+ Kf8 38.Ra7
+/- (0.87 ++) Depth: 22/60 00:02:59 254mN
25.h5 Bh7 26.h6 Rg8 27.Qd4[] Na4 28.Rd7 Qb6 29.Ne7 Qxd4 30.cxd4[] Rgf8 31.hxg7+[] Kxg7[] 32.Ra7 Rh8 33.Bc6 Rd8 34.Rxa6 Nc3 35.Rf2 Bd3 36.Rg2+ Bg6 37.Nxg6 fxg6 38.Ra7+ Kh6
+/- (0.88 ++) Depth: 22/60 00:03:06 265mN
25.h5 Bf5 26.Qd4 Na4 27.h6 Rg8 28.Kf2 Nb6 29.hxg7+ Rxg7 30.Rd1 Bh7 31.Qf4 Nd5 32.Bxd5[] exd5[] 33.R1xd5 Qc8 34.Rh6 Qg4 35.Qxg4 Rxg4 36.Rd7 Kg8 37.Ne7+ Kg7 38.Rxa6 Be4 39.Ke1 Rg1+ 40.Kd2 Rg2+ 41.Kc1
+/- (0.85) Depth: 22/61 00:03:44 318mN
25.h5 Bf5 26.Qd4 Na4 27.h6 Rg8 28.Kf2 Nb6 29.hxg7+ Rxg7 30.Rd1 Bh7 31.Qf4 Nd5 32.Bxd5[] exd5 33.R1xd5 Qc8 34.Rh6 Qg4 35.Qxg4 Rxg4 36.Rd7 Kg8 37.Ne7+ Kg7 38.Rxa6 Be4 39.Kf1 Rg2
+/- (0.86 ++) Depth: 23/61 00:04:28 381mN
25.h5 Bf5 26.Qd4 Na4 27.h6 Rg8 28.Kf2 Nb6 29.hxg7+ Rxg7 30.Rd1 Bh7 31.Qf4 Nd5 32.Bxd5[] exd5 33.R1xd5 Qc8 34.Rh6 Qg4 35.Qxg4 Rxg4 36.Rd7 Kg8 37.Ne7+ Kg7 38.Rxa6 Be4 39.Kf1 Rg2
+/- (0.88 ++) Depth: 23/61 00:04:42 402mN
25.h5 Bh7 26.h6 Rg8 27.Qd4 Na4 28.Rd7 Qb6 29.Ne7 Qxd4 30.cxd4[] Rgf8 31.hxg7+[] Kxg7[] 32.Ra7 Rh8 33.Bc6 Rd8 34.Rxa6 Bd3 35.Rf2 Rh3 36.Rg2+ Kh7 37.Rh2 Rxh2 38.Kxh2 Nc3 39.Kg3 b4 40.Ra7
+/- (0.87) Depth: 23/61 00:05:25 463mN
25.h5 Bh7 26.h6 Rg8 27.Qd4 Na4 28.Rd7 Qb6 29.Ne7 Qxd4 30.cxd4[] Rgf8 31.hxg7+[] Kxg7[] 32.Ra7 Rh8 33.Bc6 Rd8 34.Rxa6 Bd3 35.Rf2 Rh3 36.Rg2+ Kh7 37.Rh2 Rxh2 38.Kxh2 Nc3 39.Kg3 b4 40.Ra7
+/- (0.87) Depth: 24/61 00:06:11 529mN
25.h5 Bh7 26.h6 Rg8 27.Qd4 Na4 28.Rd7 Qb6 29.Ne7 Qxd4 30.cxd4[] Rgf8 31.hxg7+[] Kxg7[] 32.Ra7 Rh8 33.Bc6 Rd8 34.Rxa6 Bd3 35.Rf2 Rh3 36.Rg2+[] Kh7 37.Rd2 Bc4 38.Rc2 Bd3 39.Rh2 Rxh2 40.Kxh2 Nc3 41.Kg3 b4 42.Ra7
+/- (0.88 ++) Depth: 25/61 00:07:48 670mN

(, chessengines20 14.11.2010)
hi, merhaba, hallo HT
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Michel
Posts: 2272
Joined: Mon Sep 29, 2008 1:50 am

Re: Test Position: Shirov-Eljanov analysis

Post by Michel »

5 seconds for GnuChess!

Code: Select all

1 7 0 30  Kg2
1 12 0 33  Rf2
1 42 0 36  Be2!
1 42 0 38  Be2
2 13 0 410  :-(
2 9 0 459  Qd4 Nd3
3 -17 0 1432  :-(
3 -9 0 1886  Nb4 f6 Bc6
4 4 0 4600  Qg4 Bf5 Qd4 Nd3
4 21 0 4658  Qd4!
4 4 0 5013  Qg4 Bf5 Qd4 Nd3
5 29 1 6635  Qd4!
5 59 1 6906  Qd4!
5 73 1 7269  Qd4 Nd3 Nb4 Nxb4 cxb4
6 100 1 8146  Qd4!
6 147 1 8624  Qd4!
6 179 1 8979  Qd4!
6 211 1 9316  Qd4!
6 240 1 10050  Qd4!
6 170 1 10876  Qd4 Nd3 Rd7 Qc8 Ne7 Rxe7
7 136 2 14191  :-(
7 111 2 15469  :-(
7 85 2 16037  :-(
7 58 2 16541  :-(
7 33 2 18164  :-(
7 50 4 30959  Qd4 Na4 e4 Nb6 Nb4 Na4 Rc6
8 76 5 36034  Qd4!
8 102 5 37226  Qd4!
8 89 5 39698  Qd4 Na4 c4 Qb6 cxb5 axb5 Ne7 Qxd4
9 89 7 51207  Qd4 Na4 c4 Qb6 cxb5 axb5 Ne7 Qxd4 Nxg6+ fxg6
10 89 11 80205  Qd4 Na4 c4 Qb6 cxb5 axb5 Ne7 Qxd4 Nxg6+ fxg6 exd4
11 96 20 147889  Qd4 Na4 c4 Qb6 cxb5 axb5 Be2 Ra8 Ne7 Qxd4 exd4
12 121 33 260679  Qd4!
12 94 38 300082  Qd4 Na4 c4 Qb6 cxb5 axb5 Be2 Ra8 Ne7 Qxd4 Nxg6+ fxg6 exd4
13 93 130 1083657  Qd4 Na4 c4 Qb6 cxb5 axb5 Be2 Ra8 h5 Bf5 Ne7 Qxd4 Rxd4
14 74 357 3091712  Qd4 Na4 c4 bxc4 Qxc4 Nb6 Qd4 Nc8 Rd7 Qb6 Kh2 Qxd4 exd4 Nb6
14 94 551 4771177  h5 Bh7 h6 gxh6 Qf6+ Kg8 Qxh6 Bg6 Bh5 Qb7 Bxg6 fxg6 Rf6 Qg7 Rxg6
15 119 1108 9905810  h5!
15 116 1144 10226682  h5 Bh7 h6 gxh6 Qf6+ Kg8 Qxh6 Bg6 Bh5 Bh7 Kh2 Bg6 Rg1 Qb7 Bxg6 fxg6
16 128 1792 16175733  h5 Bh7 h6 gxh6 Qf6+ Kg8 Qxh6 Kh8 Kf2 Rg8 Qf6+ Rg7 Rg1 Bg6 Rd4 Kh7 c4 Kg8
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Albert Silver
Posts: 3019
Joined: Wed Mar 08, 2006 9:57 pm
Location: Rio de Janeiro, Brazil

Re: Test Position: Shirov-Eljanov analysis

Post by Albert Silver »

De Vos W wrote:
Albert Silver wrote:Shirov won a nice game today, and played several moves that were not easily found by engines. During analysis of one of Eljanov's possible attempts to defend, this position could have occurred:

[D]4rr1k/2q2pp1/p1NRp1b1/1pn1P3/5Q1P/2P1PB2/P7/5RK1 w - - 0 25

White's strongest continuation is 25.h5! Bf5 26.h6!

Houdini 1.h5 in zero second !!!
4rr1k/2q2pp1/p1NRp1b1/1pn1P3/5Q1P/2P1PB2/P7/5RK1 w - - 0 1

Analysis by Houdini 1.03a w32 2_CPU:


1.h5 Bf5 2.Rfd1 Ra8 3.h6 Rg8
= (0.15) Depth: 6/13 00:00:00 7kN
1.h5 Bf5 2.Rfd1 Ra8 3.h6 Rg8
= (0.21 ++) Depth: 7/13 00:00:00 9kN
1.h5 Bh7 2.Qd4 Qb6 3.Nb4 Qa7 4.Rxa6 Qe7
= (0.19) Depth: 7/17 00:00:00 14kN
1.h5 Bc2 2.h6 Rg8 3.Bg2 Bf5 4.Qd4 Na4 5.Rd7 Qb6
= (0.18) Depth: 8/21 00:00:00 24kN
1.h5 Bc2 2.h6 Rg8 3.Bg2 Bf5 4.Qd4 Na4 5.Rd7 Qb6
= (0.24 ++) Depth: 9/21 00:00:00 25kN
1.h5 Bd3 2.Rd1 Bc4 3.h6 Rg8 4.h7 Rgf8 5.Qd4 Qb6 6.Qh4 Na4
= (0.24) Depth: 9/21 00:00:00 30kN
1.h5 Bd3 2.Rf2 Bf5 3.h6 Rg8 4.Rg2 Bg6 5.hxg7+ Rxg7 6.Qd4 Na4 7.Qh4+ Kg8
= (0.23) Depth: 10/21 00:00:00 44kN
1.h5 Bd3 2.Rf2 Bf5 3.h6 Rg8 4.Rg2 Bg6 5.hxg7+ Rxg7 6.Qd4 Na4 7.Qh4+ Kg8
+/= (0.29 ++) Depth: 11/25 00:00:00 63kN
1.h5 Bd3 2.Rf2 Bh7 3.h6 Rg8 4.Rg2 a5 5.Qh4 f5 6.hxg7+ Rxg7
+/= (0.36) Depth: 11/33 00:00:00 140kN
1.h5 Bd3 2.Rf2 Bh7 3.h6 Rg8 4.Rg2 a5 5.Qh4 Nb7 6.Rd1 Nc5 7.Kf1 Rc8 8.hxg7+ Rxg7
+/= (0.41 ++) Depth: 12/33 00:00:00 301kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Nb6 4.hxg7+ Kxg7 5.Kf2 Rg8 6.Rg1+ Bg6 7.Be4 Kf8 8.Bxg6 Rxg6 9.Rxg6 fxg6 10.Qg4
+/= (0.34) Depth: 12/33 00:00:00 399kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Nb6 4.hxg7+ Kxg7 5.Kf2 Rg8 6.Rg1+ Bg6 7.Be4 Kf8 8.Bxg6 Rxg6 9.Rxg6 fxg6 10.Qg4
+/= (0.40 ++) Depth: 13/33 00:00:00 433kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Nb6 4.Kf2 Rg8 5.Rh1 Bg6 6.Qh4 Bh7 7.hxg7+ Rxg7 8.Be4 Nc4
+/= (0.41) Depth: 13/33 00:00:00 533kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Nb6 4.Kf2 Rg8 5.Rh1 Bg6 6.Qh4 Bh7 7.hxg7+ Rxg7 8.Be4 Nc4
+/= (0.41) Depth: 14/33 00:00:00 715kN
1.h5 Bh7 2.Qd4 Na4 3.Kf2 Qb6 4.Qf4 Qc7 5.h6 Rg8 6.Qd4 gxh6 7.Rh1 Rg7 8.Rxh6 Nb6 9.Be4 Kg8 10.Bxh7+ Rxh7 11.Qg4+ Rg7 12.Qh5
+/= (0.39) Depth: 15/37 00:00:00 1309kN
1.h5 Bh7 2.Qd4 Na4 3.h6 gxh6 4.Kf2 Rg8 5.Rd7 Qc8 6.Rh1 Rg7 7.Ra7 Nb2 8.Rxh6 Nc4 9.Be4 Rf8 10.Ne7
+/= (0.37) Depth: 16/37 00:00:01 2005kN
1.h5 Bh7 2.Qd4 Na4 3.h6 gxh6 4.Kf2 Rg8 5.Rd7 Qc8 6.Rh1 Rg7 7.Ra7 Nb2 8.Rxh6 Nc4 9.Be4 Rf8 10.Ne7 Qb8
+/= (0.43 ++) Depth: 17/39 00:00:01 2798kN
1.h5 Bh7 2.Qd4 Na4 3.h6 gxh6 4.Kf2 Rg8 5.Rh1 Qb6 6.Rxh6 Qxd4 7.cxd4 Kg7 8.Rf6 Bg6 9.Rd7 Rh8 10.a3 Nc3 11.Ra7 Rh6 12.Rxa6 Rh2+ 13.Kg3 Reh8
+/= (0.42) Depth: 17/47 00:00:03 7115kN
1.h5 Bh7 2.Qd4 Na4 3.h6 gxh6 4.Kf2 Rg8 5.Rh1 Qb6 6.Rxh6 Qxd4 7.cxd4 Kg7 8.Rf6 Bg6 9.Nb4 a5 10.Nc6 Nc3 11.a3 Rh8 12.Nxa5 Rh2+ 13.Kg3 Reh8 14.Rd7 R2h3+ 15.Kf2 Rh2+ 16.Bg2
+/= (0.38) Depth: 18/47 00:00:04 8439kN
1.h5 Bh7 2.Qd4 Na4 3.h6 gxh6 4.Kf2 Rg8 5.Rh1 Qb6 6.Rxh6 Qxd4 7.cxd4 Kg7 8.Rf6 Bg6 9.Nb4 a5 10.Nc6 Nc3 11.a3 Rh8 12.Nxa5 Rh2+ 13.Kg3 Ra2 14.Bc6 Rh8
+/= (0.44 ++) Depth: 19/47 00:00:05 10809kN
1.h5 Bh7 2.Qd4 Na4 3.h6 gxh6 4.Kf2 Rg8 5.Rh1 Qb6 6.Rxh6 Qxd4 7.cxd4 Kg7 8.Rf6 Bg6 9.Na7 Rh8 10.Rxa6 Nc3 11.Kg2 Rh6 12.Rb6 Reh8 13.Nxb5 Ne4 14.Rf4 Rh2+ 15.Kg1
+/= (0.56 ++) Depth: 19/59 00:00:09 18200kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Rg8 4.Rd7 Qb6 5.Rxf7 Qxd4 6.cxd4 gxh6+ 7.Kf2 Nc3 8.Rh1 Rg7 9.Rxh6+ Kg8 10.Rxg7+ Kxg7 11.Rf6 Rf8 12.Rxf8 Kxf8 13.Nb4 a5 14.Nc6 b4 15.Nxa5 Kf7 16.Nc4 Nxa2 17.Nd6+ Ke7 18.Nxf5+ exf5
+/= (0.54) Depth: 19/59 00:00:12 25674kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Rg8 4.Rd7 Qb6 5.Rxf7 Qxd4 6.cxd4 gxh6+ 7.Kf2 Nc3 8.Rh1 Rg7 9.Rxh6+ Kg8 10.Rxg7+ Kxg7 11.Rf6 Rf8 12.Rxf8 Kxf8 13.Nb4 a5 14.Nc6 b4 15.Nxa5 Kf7 16.Nc4 Nxa2 17.Nd6+ Ke7 18.Nxf5+ exf5
+/= (0.54) Depth: 20/59 00:00:14 29428kN
1.h5 Bf5 2.Qd4 Na4 3.h6 Rg8 4.Rd7 Qb6 5.Rxf7 Qxd4 6.cxd4 gxh6+ 7.Kf2 Nc3 8.Rh1 Rg7 9.Rxh6+ Kg8 10.Rxg7+ Kxg7 11.Rf6 Rf8 12.Rxf8 Kxf8 13.Nb4 a5 14.Nc6 b4 15.Nxa5 Kf7 16.Nc4 Nxa2 17.Nd6+ Ke7 18.Nxf5+
+/= (0.62 ++) Depth: 21/64 00:00:27 56701kN

(14.11.2010)
Sorry, but Qd4 Qa4 is no good. Give it more time and tell me how long before it shows h5 and then h6.
"Tactics are the bricks and sticks that make up a game, but positional play is the architectural blueprint."
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