[d] 2r2n1k/pp1qr1p1/4b2p/3pPp1P/2pP1B2/P1P3QB/2PK1PR1/6R1 w - - 0 28 [/d]
From Gashimov-Timman played in the french league.
When testing the free engines against this position, it seems that you need to go through the moves for the engine to start realizing the sacrifice is winning
Nice Sacrifice... can your engine found it?
Moderators: hgm, Rebel, chrisw
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Patatov
Re: Nice Sacrifice... can your engine found it?
by the way the game continued by 28.Bxh6 gxh6 29.Bxf5 Nh7 30.Qg6 etc...
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jdart
- Posts: 4367
- Joined: Fri Mar 10, 2006 5:23 am
- Location: http://www.arasanchess.org
Re: Nice Sacrifice... can your engine found it?
I think the issue is that some engines will like Bxh6 but it doesn't look a lot better than other moves until you go quite deep.
This is Deep Shredder 10 - it gets a score of +3 but only at 18 ply:
yes 13 2340 +197 2259912 Bxh6 gxh6 Qf4 Nh7 Qxh6 Rg8 Rxg8+ Bxg8 Qg6
Rg7 Qxg7+ Qxg7 Rxg7 Kxg7 Bxf5
yes 14 3060 +172 3004202 Bxh6 gxh6
yes 14 3530 +172 3508892 Bxh6 gxh6
no 14 5730 +173 5811890 Qh4
no 14 7470 +173 7739483 Qh4 Kh7
no 15 13530 +177 14050746 Qh4 Kh7 Kd1 b5 Qg3 Rf7 Qf3 Re8 Rg6 Kh8
R6g3
yes 15 14120 +178 14641657 Bxh6
yes 15 14700 +181 15256272 Bxh6 gxh6 Qf4 Nh7 Rg6 Ree8 Rxh6 Rc6 Rgg6
Re7 Qg5 Rg7 Rxg7
yes 16 17060 +181 17683238 Bxh6 gxh6 Qf4 Nh7 Rg6 Ree8 Rxh6 Rc6 Rgg6
Re7 Rg3 Ra6
yes 17 23300 +175 24297407 Bxh6 gxh6 Qf4 Nh7 Rg6 Ree8 Rxh6 Rc6 Rgg6
Re7 Rg3 Qe8 Rhg6 Bf7 Rxc6 Qxc6 Bxf5
no 17 29970 +176 31421675 Qh4
no 17 33840 +176 35754380 Qh4 Kh7
no 18 68840 +175 73632741 Qh4 Kh7 Kd1 Rc6 Bc1 Qe8 Rg3 Rb6 Bg2 Rb1
Bf3 b5 Qf4 Kh8 Ke2 a5 Kf1 Ra1
yes 18 71470 +176 76247163 Bxh6
yes 18 81500 +211 86304182 Bxh6
yes 18 128090 +300 129833095 Bxh6 gxh6 Bxf5 Nh7 f4 Ng5 Bg6 Nh3 Rf1 Rg8
f5 Bxf5 Rxf5 Qxf5 Bxf5 Rxg3 Rxg3 Ng5 Rg2
b5 Rf2 Kg7 Bg6
This is Deep Shredder 10 - it gets a score of +3 but only at 18 ply:
yes 13 2340 +197 2259912 Bxh6 gxh6 Qf4 Nh7 Qxh6 Rg8 Rxg8+ Bxg8 Qg6
Rg7 Qxg7+ Qxg7 Rxg7 Kxg7 Bxf5
yes 14 3060 +172 3004202 Bxh6 gxh6
yes 14 3530 +172 3508892 Bxh6 gxh6
no 14 5730 +173 5811890 Qh4
no 14 7470 +173 7739483 Qh4 Kh7
no 15 13530 +177 14050746 Qh4 Kh7 Kd1 b5 Qg3 Rf7 Qf3 Re8 Rg6 Kh8
R6g3
yes 15 14120 +178 14641657 Bxh6
yes 15 14700 +181 15256272 Bxh6 gxh6 Qf4 Nh7 Rg6 Ree8 Rxh6 Rc6 Rgg6
Re7 Qg5 Rg7 Rxg7
yes 16 17060 +181 17683238 Bxh6 gxh6 Qf4 Nh7 Rg6 Ree8 Rxh6 Rc6 Rgg6
Re7 Rg3 Ra6
yes 17 23300 +175 24297407 Bxh6 gxh6 Qf4 Nh7 Rg6 Ree8 Rxh6 Rc6 Rgg6
Re7 Rg3 Qe8 Rhg6 Bf7 Rxc6 Qxc6 Bxf5
no 17 29970 +176 31421675 Qh4
no 17 33840 +176 35754380 Qh4 Kh7
no 18 68840 +175 73632741 Qh4 Kh7 Kd1 Rc6 Bc1 Qe8 Rg3 Rb6 Bg2 Rb1
Bf3 b5 Qf4 Kh8 Ke2 a5 Kf1 Ra1
yes 18 71470 +176 76247163 Bxh6
yes 18 81500 +211 86304182 Bxh6
yes 18 128090 +300 129833095 Bxh6 gxh6 Bxf5 Nh7 f4 Ng5 Bg6 Nh3 Rf1 Rg8
f5 Bxf5 Rxf5 Qxf5 Bxf5 Rxg3 Rxg3 Ng5 Rg2
b5 Rf2 Kg7 Bg6
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pijl
Re: Nice Sacrifice... can your engine found it?
CTD on a P4-2.8Ghz finds the move quickly, discards it and finds it again.
ply score time nodes pv
ply score time nodes pv
Code: Select all
6& 1.094 0:00.14 38177 g3h4 e7f7 f4h6 g7h6 g2g8 h8h7 h4g3
6. 1.094 0:00.14 41283 g3h4 e7f7 f4h6 g7h6 g2g8 h8h7 h4g3
7& 1.072 0:00.39 105408 g3h4 f8h7 d2d1 c8e8 f4c1 d7c7 g2g6
7. 1.072 0:00.48 133407 g3h4 f8h7 d2d1 c8e8 f4c1 d7c7 g2g6
8& 0.887 0:00.82 232407 g3h4 e7f7 d2d1 d7a4 f4c1 e6d7 g2g3 f8e6
8& 1.035 0:01.57 422680 g3e3 h8h7 d2c1 d7a4 c1b2 a4b5 b2a2 b5a4 e3d2
8& 1.038 0:01.84 506178 f4h6 g7h6 h3f5 f8h7 g3g6 c8f8 f5e6 d7e6
8. 1.038 0:01.85 513086 f4h6 g7h6 h3f5 f8h7 g3g6 c8f8 f5e6 d7e6
9& 1.151 0:02.18 605081 f4h6 g7h6 h3f5 f8h7 g3g6 c8f8 f2f4 b7b5 f5e6 d7e6
9. 1.151 0:02.39 670611 f4h6 g7h6 h3f5 f8h7 g3g6 c8f8 f2f4 b7b5 f5e6 d7e6
10& 1.151 0:03.06 873895 f4h6 g7h6 h3f5 f8h7 g3g6 c8f8 f2f4 b7b5 f5e6 d7e6
10. 1.151 0:03.34 962152 f4h6 g7h6 h3f5 f8h7 g3g6 c8f8 f2f4 b7b5 f5e6 d7e6
11& 0.883 0:04.62 1340432 f4h6 g7h6 h3f5 f8h7 g3g6 c8f8 f2f4 d7c8 f5e6 c8e6 g6g3
11& 0.928 0:10.75 3042419 g3e3 h8h7 e3f3 h7h8 d2c1 d7a4 c1b2 a4b5 b2a2 b5a4 f3e2 f8d7
11& 1.054 0:14.78 4211837 g3h4 f8h7 d2d1 c8c6 h4g3 d7e8 g3f3 h7f8 f4c1 e8d7 c1d2
11. 1.054 0:21.54 6034333 g3h4 f8h7 d2d1 c8c6 h4g3 d7e8 g3f3 h7f8 f4c1 e8d7 c1d2
12& 1.059 0:28.79 8093845 g3h4 f8h7 d2d1 c8c6 h4g3 d7d8 f4c1 c6a6 f2f4 h7f8 g2e2 a6c6
12. 1.059 0:34.32 9580411 g3h4 f8h7 d2d1 c8c6 h4g3 d7d8 f4c1 c6a6 f2f4 h7f8 g2e2 a6c6
13& 0.927 1:16.04 21592017 g3h4 f8h7 g1b1 c8c6 g2g1 c6a6 b1a1 e7e8 h3g2 h8g8 g2f3 e6f7 d2e1
13. 0.927 4:19.93 70977322 g3h4 f8h7 g1b1 c8c6 g2g1 c6a6 b1a1 e7e8 h3g2 h8g8 g2f3 e6f7 d2e1
14& 1.090 5:45.29 95187052 g3h4 f8h7 g2g6 c8e8 d2d1 d7c7 f4d2 c7d7 d2e3 d7a4 e3c1 e7f7 f2f4 h8g8
14. 1.090 5:50.80 96841020 g3h4 f8h7 g2g6 c8e8 d2d1 d7c7 f4d2 c7d7 d2e3 d7a4 e3c1 e7f7 f2f4 h8g8
15& 1.009 6:30.57 108661808 g3h4 f8h7 g2g6 c8e8 d2d1 d7c7 f4d2 c7d7 h3g2 d7b5 d1c1 b5a4 c1b2 h7f8 g6g3
15& 1.220 7:10.08 121085010 f4h6 g7h6 h3f5 f8h7 f2f4 h7g5 f5g6 g5h3 g1f1 e6f5 g6f5 d7f5 f1f3 h3f4 f3f4 f5h5
15. 1.220 7:14.71 122642234 f4h6 g7h6 h3f5 f8h7 f2f4 h7g5 f5g6 g5h3 g1f1 e6f5 g6f5 d7f5 f1f3 h3f4 f3f4 f5h5
16& 1.220 7:50.86 134343317 f4h6 g7h6 h3f5 f8h7 f2f4 h7g5 f5g6 g5h3 g1f1 e6f5 g6f5 d7f5 f1f3 h3f4 f3f4 f5h5
16. 1.220 8:06.54 139265044 f4h6 g7h6 h3f5 f8h7 f2f4 h7g5 f5g6 g5h3 g1f1 e6f5 g6f5 d7f5 f1f3 h3f4 f3f4 f5h5
17& 1.451 10:00.66 173904865 f4h6 g7h6 h3f5 f8h7 f2f4 h7g5 f5g6 g5h3 g1f1 e7g7 f4f5 e6f5 f1f5 h3g5 g3f4 d7e7 a3a4
17. 1.451 10:24.19 181386600 f4h6 g7h6 h3f5 f8h7 f2f4 h7g5 f5g6 g5h3 g1f1 e7g7 f4f5 e6f5 f1f5 h3g5 g3f4 d7e7 a3a4
18& 1.139 13:16.22 234385343 f4h6 g7h6 h3f5 f8h7 f2f4 h7g5 f5g6 g5h3 g1f1 e7g7 f4f5 e6f5 f1f5 h3g5 g3f4 d7e7 a3a4 g5e4 d2c1
18. 1.139 15:08.66 268151274 f4h6 g7h6 h3f5 f8h7 f2f4 h7g5 f5g6 g5h3 g1f1 e7g7 f4f5 e6f5 f1f5 h3g5 g3f4 d7e7 a3a4 g5e4 d2c1
19& 1.355 21:32.06 386432810 f4h6 g7h6 h3f5 f8h7 f2f4 h7g5 f5g6 g5h3 g1f1 c8g8 f4f5 e6f5 f1f5 h3g5 f5g5 h6g5 g3g5 g8f8 h5h6
19. 1.355 23:40.68 425883064 f4h6 g7h6 h3f5 f8h7 f2f4 h7g5 f5g6 g5h3 g1f1 c8g8 f4f5 e6f5 f1f5 h3g5 f5g5 h6g5 g3g5 g8f8 h5h6
20& 1.245 36:55.83 642289063 f4h6 g7h6 h3f5 f8h7 f2f4 h7g5 f5g6 g5h3 g1f1 e7g7 f4f5 e6f5 f1f5 h3g5 f5g5 h6g5 g3g5 d7e7 g5h6 h8g8 a3a4-
Eelco de Groot
- Posts: 4567
- Joined: Sun Mar 12, 2006 2:40 am
- Full name:
Re: Nice Sacrifice... can your engine found it?
With Toga 1.5 Checkov based on Teemu's Toga CMLX I can't find the Bishop sacrifice yet in reasonable time, this is Build 36:
[D]2r2n1k/pp1qr1p1/4b2p/3pPp1P/2pP1B2/P1P3QB/2PK1PR1/6R1 w - -
Engine: Toga 1.5 Checkov_beta1 bb5men test4 (256 MB)
by Letouzey, Gaksch, Pudas and de Groot
1/01 0:00 -0.11 1.Ra1 (2)
1/01 0:00 +0.12 1.Rb1 (3)
1/01 0:00 +0.65 1.Kc1 (9)
2/07 0:00 +0.78 1.Kc1 b5 (155)
3/07 0:00 -0.07 1.Kc1 Qa4 2.Kb1 Qxa3 (451)
3/07 0:00 +0.44 1.Qh4 b5 2.Kc1 (815)
4/10 0:00 +0.68 1.Qh4 b5 2.Kc1 Qb7 (1.859)
5/12 0:00 +0.39 1.Qh4 b5 2.Kc1 Qb7 3.Rg3 (3.543)
6/14 0:00 +0.21 1.Qh4 Rce8 2.Kc1 Qa4 3.Kb2 Rc7 (10.585)
7/17 0:00 -0.07 1.Qh4 Rce8 2.Kc1 Qa4 3.Kb2 Rc7 4.Rg3 (23.387)
7/21 0:00 +0.16 1.Kd1 Qa4 2.Bc1 a5 3.Qf3 Qd7 4.Bf4 (35.998)
8/27 0:00 +0.19 1.Kd1 Qa4 2.Qf3 Rce8 3.Rg3 Nd7 4.Qg2 Rg8 (120.088)
9/29 0:00 +0.11 1.Kd1 Qa4 2.Qh4 Rf7 3.Bc1 Re8 4.Qf4 b5
5.Rg3 (309.419)
10/57 0:04 +0.19 1.Kd1 a5 2.Qf3 Qb5 3.Be3 Qa4 4.Bd2 Qxa3
5.Bc1 Qa2 6.Bxf5 Bxf5 7.Qxf5 (2.717.796) 572
10/57 0:09 +0.21 1.f3 Rc7 2.Qh4 Qb5 3.Kc1 a5 4.Rg3 Qa4
5.Bxh6 Qxa3+ 6.Kb1 Qxc3 (5.376.293) 576
11/57 0:11 +0.41 1.f3 a5 2.Kc1 Qa4 3.Kb2 b5 4.Qh4 Rce8
5.Ka2 Nd7 6.Re2 (6.433.400) 556
12/57 0:15 +0.29 1.f3 a5 2.Qh4 Rf7 3.Kc1 Qa4 4.Kb2 Bd7
5.Bc1 f4 6.Bxf4 Bxh3 7.Qxh3 Nd7 (8.381.758) 536
12/59 0:25 +0.47 1.Kc1 Nh7 2.Qh4 Rf7 3.Kb2 Qa4 4.f3 Qa5
5.Be3 Ng5 6.Bxg5 hxg5 7.Rxg5 b5 (13.791.300) 534
13/59 0:37 +0.53 1.Kc1 Nh7 2.f3 Qa4 3.Kb2 Qa5 4.Qh4 Rf7
5.Be3 b5 6.Ka2 Qxc3 7.Qe1 Qxe1
8.Rxe1 (20.015.596) 535
14/59 1:04 +0.50 1.Kc1 Nh7 2.f3 Qa4 3.Kb2 Qa5 4.Qh4 Rf7
5.Be3 Bd7 6.Ka2 Ng5 7.Bxg5 hxg5
8.Rxg5 Qxc3 (34.646.004) 541
15/59 2:28 +0.50 1.Kc1 Nh7 2.f3 Qa4 3.Kb2 a5 4.Qh4 Rf7
5.Ka2 b5 6.Rb1 Rb8 7.Be3 b4 8.cxb4 axb4 (80.822.695) 543
16/59 6:08 +0.48 1.Kc1 Nh7 2.f3 Qa4 3.Kb2 a5 4.Qh4 Rf7
5.Ka2 b5 6.Rb1 Rb8 7.Bc1 b4 8.cxb4 axb4
9.Ka1 (200.813.985) 545
17/59 14:34 +0.46 1.Kc1 Nh7 2.f3 Qa4 3.Kb2 a5 4.Qh4 Rf7
5.Ka2 b5 6.Rb1 Rb8 7.Qe1 Ng5 8.Bxg5 hxg5
9.Rxg5 Qxc2+ 10.Rb2 Qd3 (481.954.767) 551
18/59 44:20 +0.53 1.Kc1 Nh7 2.f3 Qb5 3.Qh4 Rce8 4.Rg6 b6
5.Qg3 Qd7 6.Qh2 Nf8 7.R6g3 Rd8 8.Qg2 b5
9.Qe2 Qc6 (1.454.246.714) 546
best move: Kd2-c1 time: 92:14.625 min n/s: 549.015 CPU 100.0% n/s(1CPU): 549.015 nodes: 3.038.500.000
Some output from Jerry Donald's new 1.4.2JD version of Toga, my own compile that is not optimized for speed, it chooses the same first move but the evaluation for 1. Kc1 is higher than from Toga Checkov. Also I now see there seems to be some form of iterative deepening going on, with a deeper selective analysis and a new PV for which the first move is not changed at the same ply. Had not noticed that before, I am not sure what part of the code is doing that.
2r2n1k/pp1qr1p1/4b2p/3pPp1P/2pP1B2/P1P3QB/2PK1PR1/6R1 w - -
Engine: Toga II 1.4.2JD bb5men (256 MB)
by Thomas Gaksch and Fabien Letouzey
1/01 0:00 +0.25 1.Ra1 (2)
1/01 0:00 +0.49 1.Rb1 (3)
1/01 0:00 +0.78 1.Kc1 (9)
2/07 0:00 +0.89 1.Kc1 Kg8 (143)
3/08 0:00 +0.26 1.Kc1 Qa4 2.Kb1 Qxa3 (636)
3/08 0:00 +0.67 1.Qh4 b5 2.Kc1 (1.115)
4/08 0:00 +0.79 1.Qh4 Qc7 2.Kc1 (1.907)
5/10 0:00 +0.67 1.Qh4 Rce8 2.Kc1 Qb5 3.f3 (4.238)
6/14 0:00 +0.53 1.Qh4 Rc7 2.Bxh6 Qa4 3.Bf4 Qxa3 (7.995)
6/18 0:00 +0.55 1.Qh4 Rf7 2.Kc1 Qa4 3.Kb1 Qxa3 (6.478)
7/18 0:00 +0.55 1.Qh4 Rf7 2.Ra1 Qa4 3.Kd1 Nd7 (10.650)
8/18 0:00 +0.47 1.Qh4 Rce8 2.Kc1 Qa4 3.Kb2 Rc7 4.f3 b5
(19.173)
8/27 0:00 +0.50 1.Qh4 Rce8 2.Kc1 Qa4 3.Kb2 a5 4.f3 Rc7
(42.989)
9/29 0:00 +0.49 1.Qh4 Rf7 2.Kc1 Qa4 3.Kb2 b5 4.f3 Nd7
(60.934)
9/34 0:00 +0.66 1.Qh4 Rce8 2.f3 a5 3.Kc1 Qb5 4.Rh1 Nd7
(53.158)
10/29 0:00 +0.63 1.Qh4 Rf7 2.Kc1 Qa4 3.Kb2 Bd7 4.f3 Ne6
5.Rg6 Nxf4 6.Qxf4 (99.188)
11/31 0:00 +0.33 1.Qh4 Rf7 2.Kc1 Qa4 3.Kb2 Bd7 4.f3 Ne6
5.Rg6 Rc6 6.Bc1 (134.148)
11/44 0:02 +0.45 1.Kd1 b6 2.Qh4 Rce8 3.Kc1 Qa4 4.Kb2 Rc7
5.f3 a5 (757.150) 611
11/44 0:04 +0.76 1.f3 Rce8 2.Qh4 a5 3.Kc1 Qa4 4.Kb2 Bd7
5.Rg3 Kg8 (1.260.948) 606
12/44 0:04 +0.70 1.f3 Rce8 2.Kc1 Qb5 3.Qh4 Rf7 4.Re2 Nd7
5.Qg3 Qa4 6.Kb2 (1.354.147) 601
13/44 0:06 +0.67 1.f3 Nh7 2.Qh4 a5 3.Kc1 b5 4.Bd2 Rce8
5.Rg6 Nf8 6.R6g3 (1.834.365) 586
13/49 0:08 +0.73 1.Kc1 Nh7 2.Qh4 Rce8 3.f3 Qa4 4.Kb2 a5
5.Rg6 Rc7 6.Qg3 Ng5 7.Bxg5 hxg5
8.Qxg5 (2.346.345) 582
14/49 0:10 +0.56 1.Kc1 a5 2.Kb2 Qa4 3.Rb1 b5 4.f3 b4
5.axb4 axb4 6.cxb4 c3+ 7.Kc1 Rc4
8.Be3 Kg8 (3.130.509) 571
14/44 0:12 +0.60 1.f3 Nh7 2.Qh4 Rc6 3.Rg6 Ra6 4.a4 Nf8
5.Rf6 gxf6 6.Qxf6+ Rg7 7.Qxf8+ Kh7
(3.463.758) 569
15/45 0:18 +0.70 1.f3 Nh7 2.Qh4 Rc6 3.Ke2 Rb6 4.Bc1 Ng5
5.Bxg5 hxg5 6.Qxg5 Rb2 7.Kd2 a5
8.Qg6 (5.366.882) 572
16/45 0:26 +0.64 1.f3 Rc7 2.Qh4 Rf7 3.Ra1 Qb5 4.Kc1 Qa5
5.Kb2 Rc6 6.Rf1 Kg8 (7.486.239) 564
16/57 0:52 +0.69 1.f3 Nh7 2.Qh4 Rc6 3.Ke2 Rc8 4.Kd1 Rce8
5.Kc1 Qa4 6.Kb2 Ng5 7.Bxg5 hxg5
8.Rxg5 (14.592.265) 560
17/57 1:01 +0.66 1.f3 Nh7 2.Qh4 Rc6 3.Ke2 Rb6 4.Bc1 f4
5.Bxe6 Rbxe6 6.Qxf4 Rf7 7.Qh4 Nf8
8.Bd2 Qd6 9.a4 (17.175.202) 561
17/57 1:26 +0.73 1.Kc1 Kh7 2.Qh4 Rf7 3.Rg6 Kh8 4.R6g3 b6
5.Kb1 Qa4 6.Bc1 f4 7.Bxf4 Qxa3 8.Bg2
(24.362.736) 561
17/48 1:38 +0.78 1.f3 Nh7 2.Kc1 Qa4 3.Kb2 Qa5 4.Qh4 Rf7
5.Qe1 Re7 6.Ka2 Bd7 7.Rg6 Nf8 8.Rd6 Ne6
9.Bxf5 Nxf4 10.Rxd7 Rxd7 11.Bxd7
(28.117.054) 563
18/48 2:10 +0.71 1.f3 Nh7 2.Kc1 Qa4 3.Kb2 Qa5 4.Bd2 Qa4
5.Qh4 Rd7 6.Bc1 Rc6 7.Ka2 Rb6 8.Bf4 Ng5
9.Bxg5 hxg5 10.Qxg5 (36.835.371) 573
18/60 5:17 +0.76 1.Kc1 Rc7 2.Qh4 Nh7 3.Kb2 Rc6 4.Ka2 Rb6
5.Rb1 Rxb1 6.Kxb1 Re8 7.f3 Qa4 8.Ka2 Bd7
9.Kb2 (93.059.006) 587
18/68 6:33 +0.78 1.Kc1 Rce8 2.Kb2 a5 3.f3 Nh7 4.Qh4 Qb5+
5.Ka2 Qa4 6.Rb1 b5 7.Be3 Bd7 8.Bc1 Rf7
9.Bf4 Ng5 10.Bxg5 hxg5 11.Qxg5
(113.507.377) 576
19/60 7:36 +0.70 1.Kc1 Nh7 2.Kb2 Rce8 3.Ka2 Qa4 4.Rc1 a5
5.Rgg1 b5 6.Bd2 Rf7 7.Bg2 Ng5 8.Bxg5 hxg5
9.Qxg5 f4 10.Bf3 (132.190.904) 573
20/68 10:44 +0.74 1.Kc1 Nh7 2.Qh4 Rce8 3.Rg6 a5 4.f3 Rf7
5.Qg3 Rfe7 6.Qg2 Nf8 7.Rg3 b5 8.Kb2 Qb7
9.Qd2 Nd7 10.Rg6 (184.183.617) 571
best move: Kd2-c1 time: 11:49.641 min n/s: 571.764 CPU 100.0%
n/s(1CPU): 571.764 nodes: 405.640.000
[D]2r2n1k/pp1qr1p1/4b2p/3pPp1P/2pP1B2/P1P3QB/2PK1PR1/6R1 w - -
Engine: Toga 1.5 Checkov_beta1 bb5men test4 (256 MB)
by Letouzey, Gaksch, Pudas and de Groot
1/01 0:00 -0.11 1.Ra1 (2)
1/01 0:00 +0.12 1.Rb1 (3)
1/01 0:00 +0.65 1.Kc1 (9)
2/07 0:00 +0.78 1.Kc1 b5 (155)
3/07 0:00 -0.07 1.Kc1 Qa4 2.Kb1 Qxa3 (451)
3/07 0:00 +0.44 1.Qh4 b5 2.Kc1 (815)
4/10 0:00 +0.68 1.Qh4 b5 2.Kc1 Qb7 (1.859)
5/12 0:00 +0.39 1.Qh4 b5 2.Kc1 Qb7 3.Rg3 (3.543)
6/14 0:00 +0.21 1.Qh4 Rce8 2.Kc1 Qa4 3.Kb2 Rc7 (10.585)
7/17 0:00 -0.07 1.Qh4 Rce8 2.Kc1 Qa4 3.Kb2 Rc7 4.Rg3 (23.387)
7/21 0:00 +0.16 1.Kd1 Qa4 2.Bc1 a5 3.Qf3 Qd7 4.Bf4 (35.998)
8/27 0:00 +0.19 1.Kd1 Qa4 2.Qf3 Rce8 3.Rg3 Nd7 4.Qg2 Rg8 (120.088)
9/29 0:00 +0.11 1.Kd1 Qa4 2.Qh4 Rf7 3.Bc1 Re8 4.Qf4 b5
5.Rg3 (309.419)
10/57 0:04 +0.19 1.Kd1 a5 2.Qf3 Qb5 3.Be3 Qa4 4.Bd2 Qxa3
5.Bc1 Qa2 6.Bxf5 Bxf5 7.Qxf5 (2.717.796) 572
10/57 0:09 +0.21 1.f3 Rc7 2.Qh4 Qb5 3.Kc1 a5 4.Rg3 Qa4
5.Bxh6 Qxa3+ 6.Kb1 Qxc3 (5.376.293) 576
11/57 0:11 +0.41 1.f3 a5 2.Kc1 Qa4 3.Kb2 b5 4.Qh4 Rce8
5.Ka2 Nd7 6.Re2 (6.433.400) 556
12/57 0:15 +0.29 1.f3 a5 2.Qh4 Rf7 3.Kc1 Qa4 4.Kb2 Bd7
5.Bc1 f4 6.Bxf4 Bxh3 7.Qxh3 Nd7 (8.381.758) 536
12/59 0:25 +0.47 1.Kc1 Nh7 2.Qh4 Rf7 3.Kb2 Qa4 4.f3 Qa5
5.Be3 Ng5 6.Bxg5 hxg5 7.Rxg5 b5 (13.791.300) 534
13/59 0:37 +0.53 1.Kc1 Nh7 2.f3 Qa4 3.Kb2 Qa5 4.Qh4 Rf7
5.Be3 b5 6.Ka2 Qxc3 7.Qe1 Qxe1
8.Rxe1 (20.015.596) 535
14/59 1:04 +0.50 1.Kc1 Nh7 2.f3 Qa4 3.Kb2 Qa5 4.Qh4 Rf7
5.Be3 Bd7 6.Ka2 Ng5 7.Bxg5 hxg5
8.Rxg5 Qxc3 (34.646.004) 541
15/59 2:28 +0.50 1.Kc1 Nh7 2.f3 Qa4 3.Kb2 a5 4.Qh4 Rf7
5.Ka2 b5 6.Rb1 Rb8 7.Be3 b4 8.cxb4 axb4 (80.822.695) 543
16/59 6:08 +0.48 1.Kc1 Nh7 2.f3 Qa4 3.Kb2 a5 4.Qh4 Rf7
5.Ka2 b5 6.Rb1 Rb8 7.Bc1 b4 8.cxb4 axb4
9.Ka1 (200.813.985) 545
17/59 14:34 +0.46 1.Kc1 Nh7 2.f3 Qa4 3.Kb2 a5 4.Qh4 Rf7
5.Ka2 b5 6.Rb1 Rb8 7.Qe1 Ng5 8.Bxg5 hxg5
9.Rxg5 Qxc2+ 10.Rb2 Qd3 (481.954.767) 551
18/59 44:20 +0.53 1.Kc1 Nh7 2.f3 Qb5 3.Qh4 Rce8 4.Rg6 b6
5.Qg3 Qd7 6.Qh2 Nf8 7.R6g3 Rd8 8.Qg2 b5
9.Qe2 Qc6 (1.454.246.714) 546
best move: Kd2-c1 time: 92:14.625 min n/s: 549.015 CPU 100.0% n/s(1CPU): 549.015 nodes: 3.038.500.000
Some output from Jerry Donald's new 1.4.2JD version of Toga, my own compile that is not optimized for speed, it chooses the same first move but the evaluation for 1. Kc1 is higher than from Toga Checkov. Also I now see there seems to be some form of iterative deepening going on, with a deeper selective analysis and a new PV for which the first move is not changed at the same ply. Had not noticed that before, I am not sure what part of the code is doing that.
2r2n1k/pp1qr1p1/4b2p/3pPp1P/2pP1B2/P1P3QB/2PK1PR1/6R1 w - -
Engine: Toga II 1.4.2JD bb5men (256 MB)
by Thomas Gaksch and Fabien Letouzey
1/01 0:00 +0.25 1.Ra1 (2)
1/01 0:00 +0.49 1.Rb1 (3)
1/01 0:00 +0.78 1.Kc1 (9)
2/07 0:00 +0.89 1.Kc1 Kg8 (143)
3/08 0:00 +0.26 1.Kc1 Qa4 2.Kb1 Qxa3 (636)
3/08 0:00 +0.67 1.Qh4 b5 2.Kc1 (1.115)
4/08 0:00 +0.79 1.Qh4 Qc7 2.Kc1 (1.907)
5/10 0:00 +0.67 1.Qh4 Rce8 2.Kc1 Qb5 3.f3 (4.238)
6/14 0:00 +0.53 1.Qh4 Rc7 2.Bxh6 Qa4 3.Bf4 Qxa3 (7.995)
6/18 0:00 +0.55 1.Qh4 Rf7 2.Kc1 Qa4 3.Kb1 Qxa3 (6.478)
7/18 0:00 +0.55 1.Qh4 Rf7 2.Ra1 Qa4 3.Kd1 Nd7 (10.650)
8/18 0:00 +0.47 1.Qh4 Rce8 2.Kc1 Qa4 3.Kb2 Rc7 4.f3 b5
(19.173)
8/27 0:00 +0.50 1.Qh4 Rce8 2.Kc1 Qa4 3.Kb2 a5 4.f3 Rc7
(42.989)
9/29 0:00 +0.49 1.Qh4 Rf7 2.Kc1 Qa4 3.Kb2 b5 4.f3 Nd7
(60.934)
9/34 0:00 +0.66 1.Qh4 Rce8 2.f3 a5 3.Kc1 Qb5 4.Rh1 Nd7
(53.158)
10/29 0:00 +0.63 1.Qh4 Rf7 2.Kc1 Qa4 3.Kb2 Bd7 4.f3 Ne6
5.Rg6 Nxf4 6.Qxf4 (99.188)
11/31 0:00 +0.33 1.Qh4 Rf7 2.Kc1 Qa4 3.Kb2 Bd7 4.f3 Ne6
5.Rg6 Rc6 6.Bc1 (134.148)
11/44 0:02 +0.45 1.Kd1 b6 2.Qh4 Rce8 3.Kc1 Qa4 4.Kb2 Rc7
5.f3 a5 (757.150) 611
11/44 0:04 +0.76 1.f3 Rce8 2.Qh4 a5 3.Kc1 Qa4 4.Kb2 Bd7
5.Rg3 Kg8 (1.260.948) 606
12/44 0:04 +0.70 1.f3 Rce8 2.Kc1 Qb5 3.Qh4 Rf7 4.Re2 Nd7
5.Qg3 Qa4 6.Kb2 (1.354.147) 601
13/44 0:06 +0.67 1.f3 Nh7 2.Qh4 a5 3.Kc1 b5 4.Bd2 Rce8
5.Rg6 Nf8 6.R6g3 (1.834.365) 586
13/49 0:08 +0.73 1.Kc1 Nh7 2.Qh4 Rce8 3.f3 Qa4 4.Kb2 a5
5.Rg6 Rc7 6.Qg3 Ng5 7.Bxg5 hxg5
8.Qxg5 (2.346.345) 582
14/49 0:10 +0.56 1.Kc1 a5 2.Kb2 Qa4 3.Rb1 b5 4.f3 b4
5.axb4 axb4 6.cxb4 c3+ 7.Kc1 Rc4
8.Be3 Kg8 (3.130.509) 571
14/44 0:12 +0.60 1.f3 Nh7 2.Qh4 Rc6 3.Rg6 Ra6 4.a4 Nf8
5.Rf6 gxf6 6.Qxf6+ Rg7 7.Qxf8+ Kh7
(3.463.758) 569
15/45 0:18 +0.70 1.f3 Nh7 2.Qh4 Rc6 3.Ke2 Rb6 4.Bc1 Ng5
5.Bxg5 hxg5 6.Qxg5 Rb2 7.Kd2 a5
8.Qg6 (5.366.882) 572
16/45 0:26 +0.64 1.f3 Rc7 2.Qh4 Rf7 3.Ra1 Qb5 4.Kc1 Qa5
5.Kb2 Rc6 6.Rf1 Kg8 (7.486.239) 564
16/57 0:52 +0.69 1.f3 Nh7 2.Qh4 Rc6 3.Ke2 Rc8 4.Kd1 Rce8
5.Kc1 Qa4 6.Kb2 Ng5 7.Bxg5 hxg5
8.Rxg5 (14.592.265) 560
17/57 1:01 +0.66 1.f3 Nh7 2.Qh4 Rc6 3.Ke2 Rb6 4.Bc1 f4
5.Bxe6 Rbxe6 6.Qxf4 Rf7 7.Qh4 Nf8
8.Bd2 Qd6 9.a4 (17.175.202) 561
17/57 1:26 +0.73 1.Kc1 Kh7 2.Qh4 Rf7 3.Rg6 Kh8 4.R6g3 b6
5.Kb1 Qa4 6.Bc1 f4 7.Bxf4 Qxa3 8.Bg2
(24.362.736) 561
17/48 1:38 +0.78 1.f3 Nh7 2.Kc1 Qa4 3.Kb2 Qa5 4.Qh4 Rf7
5.Qe1 Re7 6.Ka2 Bd7 7.Rg6 Nf8 8.Rd6 Ne6
9.Bxf5 Nxf4 10.Rxd7 Rxd7 11.Bxd7
(28.117.054) 563
18/48 2:10 +0.71 1.f3 Nh7 2.Kc1 Qa4 3.Kb2 Qa5 4.Bd2 Qa4
5.Qh4 Rd7 6.Bc1 Rc6 7.Ka2 Rb6 8.Bf4 Ng5
9.Bxg5 hxg5 10.Qxg5 (36.835.371) 573
18/60 5:17 +0.76 1.Kc1 Rc7 2.Qh4 Nh7 3.Kb2 Rc6 4.Ka2 Rb6
5.Rb1 Rxb1 6.Kxb1 Re8 7.f3 Qa4 8.Ka2 Bd7
9.Kb2 (93.059.006) 587
18/68 6:33 +0.78 1.Kc1 Rce8 2.Kb2 a5 3.f3 Nh7 4.Qh4 Qb5+
5.Ka2 Qa4 6.Rb1 b5 7.Be3 Bd7 8.Bc1 Rf7
9.Bf4 Ng5 10.Bxg5 hxg5 11.Qxg5
(113.507.377) 576
19/60 7:36 +0.70 1.Kc1 Nh7 2.Kb2 Rce8 3.Ka2 Qa4 4.Rc1 a5
5.Rgg1 b5 6.Bd2 Rf7 7.Bg2 Ng5 8.Bxg5 hxg5
9.Qxg5 f4 10.Bf3 (132.190.904) 573
20/68 10:44 +0.74 1.Kc1 Nh7 2.Qh4 Rce8 3.Rg6 a5 4.f3 Rf7
5.Qg3 Rfe7 6.Qg2 Nf8 7.Rg3 b5 8.Kb2 Qb7
9.Qd2 Nd7 10.Rg6 (184.183.617) 571
best move: Kd2-c1 time: 11:49.641 min n/s: 571.764 CPU 100.0%
n/s(1CPU): 571.764 nodes: 405.640.000
-
pijl
Re: Nice Sacrifice... can the Baron find it?
The answer is yes. The Baron 2.22 finds it after almost 18 minutes on a P4-2.8Ghz (single cpu):
Code: Select all
ply time nodes score pv
6( 8)& 0:00.41 66034 +1.14 Qg3-e3 Qd7-d8 Kd2-e1 Qd8-a5 Bf4xh6 g7xh6 (Qe3xh6) (Nf8-h7)
6(14). 0:00.45 74358 +1.14 Qg3-e3 Qd7-d8 Kd2-e1 Qd8-a5 Bf4xh6 g7xh6 (Qe3xh6) (Nf8-h7)
7(12)& 0:00.67 112622 +1.10 Qg3-e3 Nf8-h7 Kd2-e1 Rc8-e8 Rg2-g3 Qd7-a4 Qe3-c1
7(14)& 0:00.98 166000 +1.19 Qg3-h4 Nf8-h7 Kd2-d1 Rc8-e8 (Qh4-g3) (Qd7-a4) (Bf4-c1)
7(14). 0:01.00 168390 +1.19 Qg3-h4 Nf8-h7 Kd2-d1 Rc8-e8 (Qh4-g3) (Qd7-a4) (Bf4-c1)
8(11)& 0:01.11 189789 +1.11 Qg3-h4 Nf8-h7 Kd2-d1 Rc8-e8 Qh4-g3 Qd7-a4 Bf4-c1 b7-b5
8(16). 0:01.61 272764 +1.11 Qg3-h4 Nf8-h7 Kd2-d1 Rc8-e8 Qh4-g3 Qd7-a4 Bf4-c1 b7-b5
9(12)& 0:02.14 362836 +1.11 Qg3-h4 Nf8-h7 Kd2-d1 Rc8-e8 Bf4-c1 Qd7-a4 Qh4-g3 (b7-b5) (Qg3-g6)
9(16)& 0:03.89 666369 +1.17 Kd2-d1 Rc8-e8 Qg3-f3 Qd7-a4 Bf4-d2 Re7-f7 Bd2-c1 (Nf8-d7) (Qf3-g3)
9(16). 0:04.13 707510 +1.17 Kd2-d1 Rc8-e8 Qg3-f3 Qd7-a4 Bf4-d2 Re7-f7 Bd2-c1 (Nf8-d7) (Qf3-g3)
10(16)& 0:06.59 1113975 +1.16 Kd2-d1 Rc8-e8 Qg3-f3 Qd7-a4 Rg2-g3 Qa4xa3 Qf3-g2 g7-g5 h5xg6 Kh8-g7
10(18). 0:08.06 1351592 +1.16 Kd2-d1 Rc8-e8 Qg3-f3 Qd7-a4 Rg2-g3 Qa4xa3 Qf3-g2 g7-g5 h5xg6 Kh8-g7
11(18)& 0:18.44 2999509 +1.09 Kd2-d1 Nf8-h7 Bf4-e3 Rc8-e8 Qg3-f3 Qd7-a4 Rg2-g3 Re8-f8 Qf3-g2 f5-f4 Rg3xg7
11(19). 0:24.33 4034734 +1.09 Kd2-d1 Nf8-h7 Bf4-e3 Rc8-e8 Qg3-f3 Qd7-a4 Rg2-g3 Re8-f8 Qf3-g2 f5-f4 Rg3xg7
12(17)& 0:29.14 4870783 +1.09 Kd2-d1 Nf8-h7 Bf4-e3 Rc8-e8 Qg3-f3 Qd7-a4 Rg2-g3 Re8-f8 Qf3-g2 f5-f4 Rg3xg7 Be6xh3
12(18). 0:44.14 7413637 +1.09 Kd2-d1 Nf8-h7 Bf4-e3 Rc8-e8 Qg3-f3 Qd7-a4 Rg2-g3 Re8-f8 Qf3-g2 f5-f4 Rg3xg7 Be6xh3
13(19)& 0:54.78 9260219 +1.09 Kd2-d1 Nf8-h7 Bf4-e3 Rc8-e8 Qg3-f3 Qd7-a4 Rg2-g6 Nh7-f8 Rg6-g3 Qa4xa3 Be3-c1 (Qa3-a1)
13(20)& 3:20.40 32464293 +1.12 Qg3-e3 Nf8-h7 Rg2-g6 a7-a5 Bf4xh6 g7xh6 Qe3xh6 b7-b5 Kd2-c1 Rc8-e8 Rg1-g3 Re8-g8 Bh3xf5
13(20). 3:31.94 34425078 +1.12 Qg3-e3 Nf8-h7 Rg2-g6 a7-a5 Bf4xh6 g7xh6 Qe3xh6 b7-b5 Kd2-c1 Rc8-e8 Rg1-g3 Re8-g8 Bh3xf5
14(22)& 5:19.65 51561921 +1.15 Qg3-e3 Nf8-h7 Rg2-g6 a7-a5 Qe3-f3 Nh7-f8 Rg6-g3 Qd7-e8 Kd2-d1 Qe8-a4 Bf4-d2 Re7-f7 Bd2xh6 g7xh6
14(22). 5:41.03 55202223 +1.15 Qg3-e3 Nf8-h7 Rg2-g6 a7-a5 Qe3-f3 Nh7-f8 Rg6-g3 Qd7-e8 Kd2-d1 Qe8-a4 Bf4-d2 Re7-f7 Bd2xh6 g7xh6
15(23)& 9:13.65 90431883 +1.00 Qg3-e3 Qd7-d8 Qe3-f3 Rc8-c6 Bf4-e3 f5-f4 Be3xf4 Re7-f7 Bh3-g4 Qd8-a5 Rg1-a1 Be6xg4 Qf3xg4 Kh8-g8 Rg2-g1
15(28)& 17:03.53 168001991 +1.12 Kd2-c1 Nf8-h7 Qg3-h4 Rc8-e8 Kc1-d1 Qd7-c7 Rg2-g6 (a7-a6) (Bf4-c1) (b7-b5) (Rg6-g3) (Nh7-f8)
15(28)& 17:49.50 177259860 +1.35 Bf4xh6 g7xh6 Bh3xf5 Nf8-h7 Qg3-g6 Rc8-e8 Kd2-c1 Qd7-c8 Bf5xe6 Qc8xe6 f2-f4 Nh7-f8 Qg6-g8+ Qe6xg8{SL} Rg2xg8+ Kh8-h7{SL} f4-f5 b7-b5
15(28). 17:55.31 178305788 +1.35 Bf4xh6 g7xh6 Bh3xf5 Nf8-h7 Qg3-g6 Rc8-e8 Kd2-c1 Qd7-c8 Bf5xe6 Qc8xe6 f2-f4 Nh7-f8 Qg6-g8+ Qe6xg8{SL} Rg2xg8+ Kh8-h7{SL} f4-f5 b7-b5
16(25)+ 18:50.59 188685959 +1.70 Bf4xh6 (g7xh6) (Bh3xf5) (Nf8-h7) (Qg3-g6) (Rc8-e8) (f2-f4)
16(29)& 19:22.70 195196137 +1.74 Bf4xh6 g7xh6 Bh3xf5 Nf8-h7 Qg3-g6 Rc8-e8 f2-f4 Re8-f8 Kd2-c1 Qd7-c8 Bf5-g4 Be6xg4 Rg2xg4 Qc8-e6 Qg6xe6 Re7xe6 f4-f5
16(29). 19:45.41 199099563 +1.74 Bf4xh6 g7xh6 Bh3xf5 Nf8-h7 Qg3-g6 Rc8-e8 f2-f4 Re8-f8 Kd2-c1 Qd7-c8 Bf5-g4 Be6xg4 Rg2xg4 Qc8-e6 Qg6xe6 Re7xe6 f4-f5-
genorb
Re: Nice Sacrifice... can your engine found it?
Rybka Winfinder 2.2 seems to find it (128Mb hash) But it doesn't find 3.Qg6, it plays 3.f4...
Code: Select all
4.00 0:00 +0.61 1.Qh4 (1.092) 17
5.00 0:00 +0.41 1.Qh4 (2.691) 29
6.00 0:00 +0.48 1.Qh4 Rf7 (7.740) 41
7.00 0:00 +0.41 1.Qh4 Rf7 2.Rg3 (12.314) 50
8.00 0:00 +0.41 1.Qh4 Nh7 2.Rb1 Rce8 (39.951) 62
8.00 0:01 +0.44 1.a4 62
8.00 0:01 +0.48 1.a4 62
8.00 0:01 +0.55 1.a4 62
8.00 0:01 +0.55 1.a4 Nh7 2.Ra1 Rf7 3.Qf3 (78.191) 66
9.00 0:01 +0.48 1.a4 Nh7 2.Ra1 Rc6 3.a5 Ra6 (99.347) 67
10.00 0:02 +0.55 1.a4 Nh7 2.Ra1 Rc6 3.a5 Re8 4.Rgg1 (164.124) 68
11.00 0:03 +0.55 1.a4 Nh7 2.Ra1 Rc6 3.a5 Re8 4.Rgg1 Qe7 (245.169) 69
12.01 0:05 +0.55 1.a4 Nh7 2.Ra1 Rc6 3.a5 Re8 4.Rgg1 Qe7 5.Qg6 (369.941) 70
13.01 0:08 +0.55 1.a4 Nh7 2.Ra1 Rc6 3.a5 Re8 4.Rgg1 Qe7 5.Qg6 Rf8 (579.634) 66
14.01 0:16 +0.55 1.a4 Nh7 2.Ra1 Rc6 3.a5 Re8 4.Rgg1 Qe7 5.Qg6 Rf8 6.a6 (1.047.591) 64
15.01 0:51 +0.61 1.a4 Nh7 2.Ra1 Rc6 3.Qh4 Ra6 4.Rgg1 Re8 5.a5 Qc7 6.Rgb1 Qd7 (3.410.727) 67
15.06 0:55 +0.65 1.Bxh6 67
15.06 0:55 +0.89 1.Bxh6 67
15.06 0:56 +0.82 1.Bxh6 67
15.06 0:57 +0.89 1.Bxh6 67
15.06 1:00 +0.96 1.Bxh6 gxh6 2.Bxf5 Nh7 3.f4 Ng5 4.Bg6 Nh3 5.Rf1 Rg7 6.f5 Bxf5 7.Rxf5 Ng5 (3.960.290) 67
16.01 1:08 +0.96 1.Bxh6 gxh6 2.Bxf5 Nh7 3.f4 Ng5 4.Bg6 Nh3 5.Rf1 Rg7 6.f5 Bxf5 7.Rxf5 Ng5 (4.498.782) 67
17.01 1:31 +1.16 1.Bxh6 gxh6 2.Bxf5 Nh7 3.f4 Ng5 4.Bg6 Nh3 5.Rf1 Rg7 6.f5 Bxf5 7.Rxf5 Ng5 (6.163.666) 69
18.01 2:02 +1.16 1.Bxh6 gxh6 2.Bxf5 Nh7 3.f4 Ng5 4.Bg6 Nh3 5.Rf1 Qc7 6.f5 Ng5 7.fxe6 Rxe6 (8.496.080) 70
19.01 3:07 +1.16 1.Bxh6 gxh6 2.Bxf5 Nh7 3.f4 Ng5 4.Bg6 Nh3 5.Rf1 Rd8 6.f5 Ng5 7.fxe6 Rxe6 (12.942.271) 70
20.01 5:11 +1.16 1.Bxh6 gxh6 2.Bxf5 Nh7 3.f4 Ng5 4.Bg6 Nh3 5.Rf1 Qd8 6.f5 Ng5 7.fxe6 Rxe6 (22.348.017) 73-
ml
Re: Nice Sacrifice... can your engine found it?
Analysis by Fritz 10, 2 GHz Core 2 Duo, CB Fritz 10 GUI, Windows XP running in VirtualBox under Linux:
Code: Select all
28.Qg3-h4
+/= (0.43) Depth: 8/27 00:00:00 58kN
28.Qg3-h4
+/- (0.71) Depth: 9/29 00:00:00 154kN
28.Qg3-h4 Re7-f7 29.Kd2-c1 Kh8-h7 30.Bf4xh6 Kh7xh6
+/- (0.74) Depth: 9/30 00:00:00 251kN
28.Qg3-h4 Re7-f7 29.Kd2-c1 Kh8-h7 30.Bf4xh6 Kh7xh6
+/- (0.74) Depth: 10/19 00:00:00 298kN
28.Qg3-h4 Kh8-h7
+/= (0.46) Depth: 11/29 00:00:01 631kN
28.Qg3-h4 Kh8-h7 29.Kd2-c1 Rc8-c6
+/= (0.46) Depth: 11/29 00:00:01 639kN
28.Qg3-e3
+/= (0.46) Depth: 11/31 00:00:01 852kN
28.Kd2-e1
+/= (0.46) Depth: 11/31 00:00:02 1476kN
28.Kd2-e1
+/= (0.62) Depth: 11/31 00:00:02 1598kN
28.Bf4xh6
+/= (0.63) Depth: 11/31 00:00:02 1711kN
28.Bf4xh6
+/- (0.78) Depth: 11/31 00:00:02 1738kN
28.Bf4xh6
+/- (1.09) Depth: 11/31 00:00:02 1771kN
28.Bf4xh6 g7xh6 29.Bh3xf5 Nf8-h7 30.Qg3-g6 b7-b5 31.Kd2-c1 Rc8-f8 32.f2-f4 Qd7-c8 33.Bf5-g4 b5-b4 34.Bg4xe6 Qc8xe6 35.c3xb4
+/- (0.99) Depth: 12/23 00:00:02 1889kN
28.Bf4xh6 g7xh6 29.Bh3xf5 Nf8-h7 30.Qg3-g6 b7-b5 31.Kd2-c1 Rc8-f8 32.f2-f4 Qd7-c8 33.Bf5-g4 b5-b4 34.Bg4xe6 Qc8xe6 35.c3xb4
+/- (0.99) Depth: 13/27 00:00:03 2322kN
28.Bf4xh6
+/- (1.27) Depth: 14/32 00:00:03 3001kN
28.Bf4xh6 g7xh6 29.Bh3xf5 Nf8-h7 30.Qg3-g6 b7-b5 31.Kd2-c1 Rc8-f8 32.f2-f4 a7-a5
+/- (1.27) Depth: 14/38 00:00:04 3309kN
28.Bf4xh6
+- (1.55) Depth: 15/31 00:00:05 4913kN
28.Bf4xh6 g7xh6 29.Bh3xf5 Nf8-h7 30.Qg3-g6 b7-b5 31.Kd2-c1 Rc8-f8 32.f2-f4 a7-a5
+- (1.56) Depth: 15/31 00:00:06 5434kN
28.Bf4xh6 g7xh6
+/- (1.28) Depth: 16/37 00:00:10 10970kN
28.Bf4xh6 g7xh6 29.Bh3xf5
+/- (1.28) Depth: 16/37 00:00:11 12929kN
28.Bf4xh6
+- (1.56) Depth: 17/33 00:00:21 27039kN
28.Bf4xh6 g7xh6 29.Bh3xf5 Nf8-h7 30.Qg3-g6 b7-b5 31.Bf5xe6 Qd7xe6 32.f2-f4 Rc8-f8 33.Qg6xe6 Re7xe6
+- (1.56) Depth: 17/36 00:00:22 28486kN
28.Bf4xh6
+- (1.84) Depth: 18/34 00:00:33 43272kN
28.Bf4xh6 g7xh6
+- (1.56) Depth: 19/41 00:00:48 64767kN
28.Bf4xh6 g7xh6 29.Bh3xf5
+- (1.56) Depth: 19/41 00:00:57 77696kN
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Ross Boyd
- Posts: 114
- Joined: Wed Mar 08, 2006 9:52 pm
- Location: Wollongong, Australia
Re: Nice Sacrifice...
Well, TRACE 2 finds it on a Q6600 (single threaded)...
Code: Select all
FEN: 2r2n1k/pp1qr1p1/4b2p/3pPp1P/2pP1B2/P1P3QB/2PK1PR1/6R1 w - - 0 28
Trace 2:
1/1 00:00.156 55 0 +0.51 Kc1
2/2 00:00.156 149 0 +0.57 Kc1 Qa4
3/7 00:00.156 570 0 +0.28 Kc1 Qa4 Kb2
3/10 00:00.156 1.594 0 +0.65 Qh4 Rce8 Kc1
4/10 00:00.156 3.116 0 +0.67 Qh4 Rce8 Kc1 Qa4
5/14 00:00.156 5.722 5.000 +0.39 Qh4 Rce8 Kc1 Qa4 Kb2
5/16 00:00.156 12.817 10.000 +0.91 Qe3 Kh7 Kc1 Kh8
6/18 00:00.172 26.825 1.666.666 +0.46 Qe3 Nh7 Kc1 Qa4 Kb2
6/14 00:00.172 34.440 2.000.000 +0.53 Qh4 Rce8 Kc1 Qa4 Kb2 Qb5+ Ka1
7/22 00:00.188 73.582 2.258.064 +0.81 Qh4 Rf7 Kc1 Qa4 Kb2 Qb5+ Ka1
8/24 00:00.219 116.793 1.854.838 +0.64 Qh4 Rf7 Kc1 Qa4 Kb2 Qb5+ Ka2 Qa4 f3
8/29 00:00.297 269.863 1.892.857 +0.71 Kc1 Qa4 Bxh6 Qxa3+ Kb1 Rcc7 Qe3 Nh7 Rg3
8/22 00:00.360 376.715 1.847.290 +1.23 Bxh6 gxh6 Bxf5 Nh7 Qg6 Rce8 Bxe6
9/25 00:00.469 585.587 1.875.000 +1.27 Bxh6 gxh6 Bxf5 Nh7 Qg6 Rf8 Bxe6 Rxe6
10/28 00:00.797 1.173.645 1.828.125 +1.71 Bxh6 gxh6 Bxf5 Nh7 Qg6 Rce8 f4 Qc7 Bxe6
11/29 00:01.281 2.057.434 1.826.666 +1.73 Bxh6 gxh6 Bxf5 Nh7 Qg6 Rce8 f4 a5 Bxe6 Rxe6
12/32 00:02.688 4.555.144 1.799.683 +1.75 Bxh6 gxh6 Bxf5 Nh7 Qg6 Rce8 f4 Qc6 Rg3 Qc7 Bxe6
13/36 00:04.500 7.991.465 1.839.742 +1.77 Bxh6 gxh6 Bxf5 Nh7 Qg6 Rce8 f4 a6 Rg3 Qc7 Bxe6
14/36 00:07.375 13.397.612 1.855.777 +1.76 Bxh6 gxh6 Bxf5 Nh7 Qg6 Rce8 f4 Qc8 Bxe6 Qxe6 f5 Qxg6 hxg6
15/39 00:11.813 22.050.868 1.891.729 +1.28 Bxh6 gxh6 Bxf5 Nh7 Qg6 Rf8 f4 Qc8 Bxe6 Qxe6 f5 Qxg6 hxg6
16/42 00:35.031 65.413.132 1.875.555 +1.34 Bxh6 gxh6 Bxf5 Nh7 Qg6 Rf8 f4 Qc8 Bxe6 Qxe6 Rg4 a6 f5 Qxg6 hxg6
17/44 00:55.656 105.426.379 1.899.549 +1.43 Bxh6 gxh6 Bxf5 Nh7 Qg6 Rf8 f4 Qc8 Bxe6 Qxe6 Rg4 a5 f5 Qxg6 Rxg6 b6
18/48 01:30.344 172.973.545 1.917.903 +1.43 Bxh6 gxh6 Bxf5 Nh7 Qg6 Rf8 f4 Qc8 Bxe6 Qxe6 Rg4 a5 a4 b6 f5 Qxg6 hxg6
19/51 02:34.469 298.850.767 1.936.861 +1.43 Bxh6 gxh6 Bxf5 Nh7 Qg6 Rf8 f4 Qc8 Bg4 Bxg4 Rxg4 Qe6 a4 a6 f5 Qxg6 Rxg6 b6
-
Eelco de Groot
- Posts: 4567
- Joined: Sun Mar 12, 2006 2:40 am
- Full name:
Re: Nice Sacrifice... can your engine found it?
[D]2r2n1k/pp1qr1p1/4b2p/3pPp1P/2pP1B2/P1P3QB/2PK1PR1/6R1 w - -
Engine: Naum 3 (256 MB, Athlon 2009 MHz, three best moves)
by Aleksandar Naumov
18 8:55 +0.87 1.a4 Nh7 2.Qh4 Rce8 3.a5 Qc6 4.Rg6 Qc7
5.Ra1 Nf8 6.Rgg1 Nd7 7.Bg2 Nb8 8.Qh1 Rd8
9.Bf3 Nc6 (435.610.196) 813
18 10:08 +0.84 1.Qh4 Kh7 2.Rb1 Rf7 3.Rgg1 Qa4 4.Bg2 Re8
5.Bf3 Kh8 6.Ra1 Nd7 7.Rgb1 a5 8.Rb2 b5
9.Rab1 Rb8 (497.270.453) 817
18 11:00 +0.70 1.Kc1 Nh7 2.Kb2 Qa4 3.Be3 Rd7 4.Bc1 Re7
5.f3 Qa5 6.Qh4 Rce8 7.Rf2 Bd7 8.Qg3 Rf8
9.Qg6 Ng5 (540.020.314) 817
_______________________________________________________________
19 14:54 +0.85 1.a4 Nh7 2.Qh4 Rce8 3.a5 Qd8 4.Rg6 Qc7
5.Ra1 Nf8 6.Rg3 Bc8 7.Bg2 Qc6 8.Qh1 Be6
9.Qh3 Nd7 10.Bf3 (746.417.203) 834
19 21:49 +0.83 1.Qh4 Kh7 2.Rb1 Rf7 3.Qg3 Kh8 4.Rgg1 Re7
5.Qh4 Rce8 6.a4 Qc6 7.Rb4 Nd7 8.Rgb1 b6
9.Rg1 a6 10.Bg2 (1.116.805.880) 852
19 22:58 +0.71 1.Kc1 Nh7 2.Kb2 Qa4 3.Be3 Rd7 4.Bc1 Re7
5.Qh4 Qb5+ 6.Ka1 Rce8 7.Bf4 b6 8.Ka2 Qa5
9.Rg3 Qa4 10.Rc1 (1.173.979.750) 851
______________________________________________________________
20 27:04 +0.85 1.a4 Nh7 2.Qh4 Rce8 3.a5 Qd8 4.Rg6 Qc7
5.Ra1 Nf8 6.Rg3 Qc6 7.Be3 Bc8 8.Bg2 Ne6
9.Bf3 Bd7 10.Rb1 Rf7 (1.386.109.788) 853
20 31:00 +0.83 1.Qh4 Kh7 2.Rb1 Rf7 3.Qg3 Kh8 4.Rgg1 Re7
5.Qh4 Rce8 6.a4 Qc6 7.Bg2 Nd7 8.a5 Qa6
9.Ra1 Nb8 10.Qh1 Qc6 (1.573.543.234) 845
20 34:53 +0.73 1.Kc1 Nh7 2.Qh4 Qe8 3.Rg6 Rc6 4.Qg3 Qf8
5.Bg2 Ra6 6.Rxe6 Rexe6 7.Bxd5 Reb6
8.Bxc4 Rxa3 9.Kd2 Ng5 10.Bxg5 hxg5 (1.770.583.415) 845
_______________________________________________________________
21 42:59 +0.89 1.a4 Nh7 2.Qh4 Rc6 3.Rg6 Ra6 4.Bg2 Qe8
5.Rxe6 Raxe6 6.Bxd5 Nf6 7.Bxe6 Ne4+
8.Ke2 Rxe6 9.Bd2 Qxa4 10.Qd8+ Qe8
11.Qxe8+ (2.207.388.437) 855
21 68:56 +0.84 1.Kc1 Nh7 2.Qh4 Qe8 3.Rg6 Rc6 4.Qg3 Qf8
5.Bg2 Ra6 6.Rxe6 Rexe6 7.Bxd5 Reb6
8.Bxc4 Rxa3 9.Kd2 Ra5 10.Qe3 Qc8
11.Qd3 (3.487.519.954) 843
21 55:59 +0.78 1.Qh4 Kh7 2.Ra1 Rf7 3.Rb1 Kh8 4.Rbg1 Nh7
5.Rg6 Nf8 6.R6g3 Nh7 7.Ra1 Qa4
8.Rgg1 Re8 9.Bg2 Rfe7 10.Bf3 Nf8
11.Rgb1 (2.827.015.982) 841
Engine: Naum 3 (256 MB, Athlon 2009 MHz, three best moves)
by Aleksandar Naumov
18 8:55 +0.87 1.a4 Nh7 2.Qh4 Rce8 3.a5 Qc6 4.Rg6 Qc7
5.Ra1 Nf8 6.Rgg1 Nd7 7.Bg2 Nb8 8.Qh1 Rd8
9.Bf3 Nc6 (435.610.196) 813
18 10:08 +0.84 1.Qh4 Kh7 2.Rb1 Rf7 3.Rgg1 Qa4 4.Bg2 Re8
5.Bf3 Kh8 6.Ra1 Nd7 7.Rgb1 a5 8.Rb2 b5
9.Rab1 Rb8 (497.270.453) 817
18 11:00 +0.70 1.Kc1 Nh7 2.Kb2 Qa4 3.Be3 Rd7 4.Bc1 Re7
5.f3 Qa5 6.Qh4 Rce8 7.Rf2 Bd7 8.Qg3 Rf8
9.Qg6 Ng5 (540.020.314) 817
_______________________________________________________________
19 14:54 +0.85 1.a4 Nh7 2.Qh4 Rce8 3.a5 Qd8 4.Rg6 Qc7
5.Ra1 Nf8 6.Rg3 Bc8 7.Bg2 Qc6 8.Qh1 Be6
9.Qh3 Nd7 10.Bf3 (746.417.203) 834
19 21:49 +0.83 1.Qh4 Kh7 2.Rb1 Rf7 3.Qg3 Kh8 4.Rgg1 Re7
5.Qh4 Rce8 6.a4 Qc6 7.Rb4 Nd7 8.Rgb1 b6
9.Rg1 a6 10.Bg2 (1.116.805.880) 852
19 22:58 +0.71 1.Kc1 Nh7 2.Kb2 Qa4 3.Be3 Rd7 4.Bc1 Re7
5.Qh4 Qb5+ 6.Ka1 Rce8 7.Bf4 b6 8.Ka2 Qa5
9.Rg3 Qa4 10.Rc1 (1.173.979.750) 851
______________________________________________________________
20 27:04 +0.85 1.a4 Nh7 2.Qh4 Rce8 3.a5 Qd8 4.Rg6 Qc7
5.Ra1 Nf8 6.Rg3 Qc6 7.Be3 Bc8 8.Bg2 Ne6
9.Bf3 Bd7 10.Rb1 Rf7 (1.386.109.788) 853
20 31:00 +0.83 1.Qh4 Kh7 2.Rb1 Rf7 3.Qg3 Kh8 4.Rgg1 Re7
5.Qh4 Rce8 6.a4 Qc6 7.Bg2 Nd7 8.a5 Qa6
9.Ra1 Nb8 10.Qh1 Qc6 (1.573.543.234) 845
20 34:53 +0.73 1.Kc1 Nh7 2.Qh4 Qe8 3.Rg6 Rc6 4.Qg3 Qf8
5.Bg2 Ra6 6.Rxe6 Rexe6 7.Bxd5 Reb6
8.Bxc4 Rxa3 9.Kd2 Ng5 10.Bxg5 hxg5 (1.770.583.415) 845
_______________________________________________________________
21 42:59 +0.89 1.a4 Nh7 2.Qh4 Rc6 3.Rg6 Ra6 4.Bg2 Qe8
5.Rxe6 Raxe6 6.Bxd5 Nf6 7.Bxe6 Ne4+
8.Ke2 Rxe6 9.Bd2 Qxa4 10.Qd8+ Qe8
11.Qxe8+ (2.207.388.437) 855
21 68:56 +0.84 1.Kc1 Nh7 2.Qh4 Qe8 3.Rg6 Rc6 4.Qg3 Qf8
5.Bg2 Ra6 6.Rxe6 Rexe6 7.Bxd5 Reb6
8.Bxc4 Rxa3 9.Kd2 Ra5 10.Qe3 Qc8
11.Qd3 (3.487.519.954) 843
21 55:59 +0.78 1.Qh4 Kh7 2.Ra1 Rf7 3.Rb1 Kh8 4.Rbg1 Nh7
5.Rg6 Nf8 6.R6g3 Nh7 7.Ra1 Qa4
8.Rgg1 Re8 9.Bg2 Rfe7 10.Bf3 Nf8
11.Rgb1 (2.827.015.982) 841