Kasparov Sacrifice (test position)

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yanquis1972
Posts: 1766
Joined: Wed Jun 03, 2009 12:14 am

Kasparov Sacrifice (test position)

Post by yanquis1972 »

[d]1q3rk1/r4pp1/1p5p/p1nR4/4N3/P7/1P1Q1PPP/5RK1 w - -[d]
from kasparov v karpov 25 5 rapid game today - probably best suited for amateur engines.


Rybka 3:

[+2.63] d=12 22.Nf6+ gxf6 23.Qxh6 f5 24.Qg5+ Kh8 25.Qf6+ Kg8 26.Rxf5 Ne4 27.Qh4 f6 28.Qxe4 Qe8 29.Qxe8 Rxe8 30.Rxf6 Rb7 31.Rb1 Re2 32.g4 b5 33.h4 b4 (0:00:08) 836kN
[+2.60] d=11 22.Nf6+ gxf6 23.Qxh6 f5 24.Qg5+ Kh8 25.Qf6+ Kg8 26.Rxf5 Ne4 27.Qh4 Qd6 28.Qxe4 Qg6 29.Qd5 Qe6 30.Rg5+ Kh8 31.Qxe6 fxe6 32.Rg6 Re7 33.Re1 Rc8 (0:00:02) 254kN
[+2.64] d=10 22.Nf6+ gxf6 23.Qxh6 f5 24.Qg5+ Kh8 25.Qf6+ Kg8 26.Rxf5 Ne4 27.Qh4 Qd6 28.Qxe4 Qg6 29.Qd5 Qe6 30.Rg5+ Kh8 (0:00:02) 186kN
[+2.19] d=10 22.Nf6+ (0:00:01) 119kN
[+1.39] d=10 22.Nf6+ (0:00:01) 90kN
[+0.99] d=10 22.Nf6+ (0:00:00) 78kN
[+0.79] d=10 22.Nf6+ (0:00:00) 71kN
[+0.51] d=10 22.Nxc5 bxc5 23.Re1 Rb7 24.Re2 Rb5 25.Rd7 c4 (0:00:00) 57kN
[+0.59] d=9 22.Nxc5 bxc5 23.Re1 Rb7 24.Re2 Rb5 25.Rd7 (0:00:00) 36kN
[+0.52] d=8 22.Nxc5 bxc5 23.Re1 Rb7 24.Re2 Rb5 (0:00:00) 11kN
[+0.51] d=7 22.Nxc5 bxc5 23.Re1 Rb7 24.Re2 (0:00:00) 7kN
[+0.59] d=6 22.Nxc5 bxc5 23.Re1 Rb7 (0:00:00) 3kN
[+0.57] d=5 22.Nxc5 bxc5 23.Re1 (0:00:00) 1kN
[+0.62] d=4 22.Nxc5 (0:00:00) 0kN
[+0.58] d=3 22.Nxc5 (0:00:00) 0kN
[+0.67] d=2 22.Nxc5 (0:00:00) 0kN
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Eelco de Groot
Posts: 4692
Joined: Sun Mar 12, 2006 2:40 am
Full name:   Eelco de Groot

Re: Kasparov Sacrifice (test position)

Post by Eelco de Groot »

Ancalagon needs six six seconds at the moment to find Nf6+. This looks a bit like a walk over for Kasparov, to have Karpov in such a bad position for Black after a mere 22 moves? But it seems 21... Nc5 was wrong and after 21... Ne5 the game would at least not have been over instantly. Nice shot as they say!

[Event "Match Kasparov vs Karpov"]
[Site "Valencia/Spain"]
[Date "2009.09.22"]
[Round "2"]
[White "Kasparov, Garry"]
[Black "Karpov, Anatoly"]
[ECO "D31"]
[Result "1-0"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. cxd5 exd5 5. Bf4 c6 6. Qc2
Bd6 7. Bxd6 Qxd6 8. e3 Ne7 9. Bd3 Nd7 10. Nge2 h6 11. O-O
O-O 12. a3 a5 13. Rad1 b6 14. e4 dxe4 15. Nxe4 Qb8 16. N2c3
Ba6 17. Bxa6 Rxa6 18. d5 Nxd5 19. Nxd5 cxd5 20. Rxd5 Ra7
21. Qd2 Nc5 22. Nf6+ gxf6 23. Qxh6 f5 24. Qg5+ Kh8 25. Qf6+
Kg8 26. Rxf5 Ne4 27. Qh4 Re8 28. Rh5 f5 1-0


[d]1q3rk1/r4pp1/1p5p/p1nR4/4N3/P7/1P1Q1PPP/5RK1 w - -

Engine: Ancalagon 1.3 Weak Squares 180 Board Control middlegame 50 endgame 50
Build 304 (Athlon 2009 MHz, 256 MB) by Romstad, Costalba, Kiiski, de Groot

2.00 0:00 +1.80 22.Nxc5 bxc5 23.Rxc5 (27.859) 84

3.00 0:03 +0.96 22.Nxc5 bxc5 23.Re1 Rb7 24.Re2 c4
25.h3 a4 26.Rd7 Rxd7 27.Qxd7 (1.790.048) 535

3.04 0:06 +2.44 22.Nf6+ gxf6 23.Qxh6 f5 24.Qg5+ Kh8
25.Qh4+ Kg7 26.Rxf5 f6 27.b4 axb4
28.axb4 Na4 29.b5 Nc5 30.Qh5 (3.253.649) 519

4.01 0:07 +3.37 22.Nf6+ gxf6 23.Qxh6 f5 24.Qg5+ Kh8
25.Qf6+ Kg8 26.Rxf5 Ne4 27.Qh4 f6
28.Qxe4 Rh7 29.h4 Kh8 (3.764.476) 526

5.01 0:08 +3.37 22.Nf6+ gxf6 23.Qxh6 f5 24.Qg5+ Kh8
25.Qf6+ Kg8 26.Rxf5 Ne4 27.Qh4 f6
28.Qxe4 Rh7 29.h4 Kh8 (4.535.204) 552

6.01 0:09 +3.48 22.Nf6+ gxf6 23.Qxh6 f5 24.Qg5+ Kh8
25.Qf6+ Kg8 26.Rxf5 Ne4 27.Qh4 f6
28.Qxe4 Rh7 29.h4 Qe8 30.Qxe8 Rxe8
31.Rxf6 Rxh4 32.Rxb6 (5.463.171) 571

7.01 0:10 +3.48 22.Nf6+ gxf6 23.Qxh6 f5 24.Qg5+ Kh8
25.Qf6+ Kg8 26.Rxf5 Ne4 27.Qh4 f6
28.Qxe4 Rh7 29.h4 Qe8 30.Qxe8 Rxe8
31.Rxf6 Rxh4 32.Rxb6 (6.083.383) 589

8.01 0:12 +3.48 22.Nf6+ gxf6 23.Qxh6 f5 24.Qg5+ Kh8
25.Qf6+ Kg8 26.Rxf5 Ne4 27.Qh4 f6
28.Qxe4 Rh7 29.h4 Qe8 30.Qxe8 Rxe8
31.Rxf6 Rxh4 32.Rxb6 (7.662.966) 619

9.01 0:31 +3.67 22.Nf6+ (19.101.195) 608

10.01 5:31 +4.46 22.Nf6+ (187.725.402) 566

best move: Ne4-f6 time: 11:13.375 min n/s: 564.362 nodes: 380.010.378
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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Robert Flesher
Posts: 1287
Joined: Tue Aug 18, 2009 3:06 am

Re: Kasparov Sacrifice (test position)

Post by Robert Flesher »

New game
1q3rk1/r4pp1/1p5p/p1nR4/4N3/P7/1P1Q1PPP/5RK1 w - - 0 1

Analysis by Deep Junior 10.1 UCI:

1.Nxc5 bxc5 2.Rc1 Rb7 3.Qxa5 Rxb2
± (0.91) Depth: 3 00:00:00
1.Nxc5 bxc5 2.Rc1 Rb7 3.Qxa5 Rxb2
± (0.91) Depth: 6 00:00:00 4kN
1.Nxc5 bxc5 2.Rc1 Rb7 3.Rc2 Re8 4.Rdxc5
² (0.53) Depth: 9 00:00:00 99kN
1.Re1 Rc7 2.b4 Nxe4 3.Rxe4 axb4 4.a4
² (0.56) Depth: 9 00:00:00 256kN
1.Re1 a4 2.Qe3 Rd7 3.Rxd7 Nxd7 4.Ng3
² (0.57) Depth: 12 00:00:00 1991kN
1.Re1 Nxe4 2.Rxe4 Rc7 3.Re1 Rfc8 4.Rd1
² (0.26) Depth: 15 00:00:01 17525kN
1.Nxc5 bxc5 2.Re1 a4 3.Re2 Rb7 4.h3
² (0.35) Depth: 15 00:00:02 21395kN
1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 Re8 7.f3 Nc5 8.Rg5+ Kf8 9.Qh6+ Ke7 10.Re1+
± (0.73) Depth: 15 00:00:02 26234kN
1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 Re8 7.Qg4+ Kf8 8.Rh5 Nc5 9.Rh8+ Ke7 10.Re1+
± (0.98) Depth: 17 00:00:03 49331kN
1.Nf6+
± (1.28) Depth: 19 00:00:05 76121kN
1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 Qd6 7.Qxe4 Rd8 8.Rg5+
+- (2.44) Depth: 19 00:00:17 209721kN
1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 f6 7.Qxe4 Rh7 8.Qe6+ Kg7 9.h3 Qe8 10.Re1
+- (2.62) Depth: 21 00:00:30 395033kN
1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 f6 7.Qxe4 Qc8 8.Rh5 Rg7 9.Rd1 Qg4
+- (2.43) Depth: 22 00:01:03 826481kN

(, Microsoft 22.09.2009)



New game
1q3rk1/r4pp1/1p5p/p1nR4/4N3/P7/1P1Q1PPP/5RK1 w - - 0 1

Analysis by HIARCS 12 MP:

1.Nxc5 bxc5 2.Rxc5 Rd8 3.Qc3 a4 4.Rc4
± (0.81) Depth: 11/26 00:00:00 946kN
1.Nxc5 bxc5 2.Rxc5 Rd8 3.Qc3 Rb7 4.Qxa5 Rxb2 5.Rfc1 Re8 6.Qc7 Qb3 7.Qd7 Rbe2 8.Rc8 Rxc8
± (0.82) Depth: 11/29 00:00:00 1670kN
1.Nxc5 bxc5 2.Rxc5 a4 3.Rc4 Rb7 4.Rb1 Rd8 5.Rd4 Rxd4 6.Qxd4 Qc8 7.Qxa4 Rxb2 8.Qd1
± (0.82) Depth: 12/31 00:00:02 5336kN
1.Nxc5 bxc5 2.Rxc5 a4 3.Rc4 Rb7 4.Rb1 Rd8 5.Rd4 Rxd4 6.Qxd4 Re7 7.Qxa4 Qxb2 8.Qb4 Qa2 9.Rc1 Re2 10.Rc8+ Kh7
± (0.71) Depth: 13/31 00:00:03 9324kN
1.Nf6+
± (0.72) Depth: 13/31 00:00:03 9696kN
1.Nf6+
± (1.07) Depth: 13/33 00:00:04 9810kN
1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 Qd6 7.Qxe4 Qg6 8.Qd5
+- (2.64) Depth: 13/42 00:00:04 11779kN
1.Nf6+
+- (2.89) Depth: 14/42 00:00:05 12894kN
1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 f6 7.Qxe4 Rh7 8.f4 Qd6 9.Rd5 Qe7 10.Qd4 Rg7
+- (2.90) Depth: 14/42 00:00:05 14484kN
1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 f6 7.Qxe4 Rh7 8.Qe6+ Kh8 9.f4 Qd8 10.Rd5
+- (3.14) Depth: 15/42 00:00:07 17711kN
1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 f6 7.Qxe4 Rh7 8.Qe6+ Kh8 9.f4 Qd8 10.Rd5 Qc7 11.Rb5 a4 12.Qxb6 Qg7 13.Rf5 Rg8 14.Qxf6
+- (3.12) Depth: 16/42 00:00:09 25022kN
1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 f6 7.Qxe4 Rh7 8.Qe6+ Kh8 9.f4 Qd8 10.Rd5 Qc7 11.Rb5 a4 12.Qxb6 Qg7 13.Rf5 Qh6 14.h3
+- (3.06) Depth: 17/45 00:00:14 38577kN

(, Microsoft 22.09.2009)


New game
1q3rk1/r4pp1/1p5p/p1nR4/4N3/P7/1P1Q1PPP/5RK1 w - - 0 1

Analysis by Deep Sjeng WC2008 x64:

1.Nxc5 bxc5 2.Rd1 Rb7 3.Qxa5 Rxb2
± (1.19) Depth: 3/9 00:00:00
1.Nxc5 bxc5 2.Rd1 Rb7 3.Qxa5 Rxb2 4.Qxc5
± (1.12) Depth: 4/9 00:00:00
1.Nxc5 bxc5 2.Rd1 Rb7 3.Qxa5 Rxb2 4.Qxc5
± (1.12) Depth: 5/12 00:00:00
1.Nxc5 bxc5 2.Re1 Rb7 3.Re2 Rc8 4.Qc3 Rb3 5.Qc2
± (0.98) Depth: 6/13 00:00:00 68kN
1.Nxc5 bxc5 2.Re1 Rb7 3.Re2 Rc8 4.Qc2 Rb3 5.Rde5
± (0.89) Depth: 7/16 00:00:00 96kN
1.Nxc5 bxc5 2.Re1 Rb7 3.Re2 Rc8 4.Qc2 Rb3 5.Rde5 Qb5
± (0.90) Depth: 8/17 00:00:00 194kN
1.Nxc5 bxc5 2.Re1 Rb7 3.Re2 Rc8 4.Qc2 Rb3 5.Rde5 Rd8 6.Rxc5
± (0.93) Depth: 8/17 00:00:00 228kN
1.Nxc5 bxc5 2.Re1 Rb7 3.Re2 Rb5 4.Rd7 c4 5.Qc3 Re8 6.Rxe8+ Qxe8
± (0.88) Depth: 9/18 00:00:00 322kN
1.Nxc5 bxc5 2.Re1 Rb7 3.Re2 Rb5 4.Rd7 Rb7 5.Rde7 Rxe7 6.Rxe7 Re8 7.Rxe8+ Qxe8 8.Qxa5
± (0.88) Depth: 10/20 00:00:00 680kN
1.Nxc5 bxc5 2.Re1 Rb7 3.Re2 Rb5 4.Rd7 c4 5.a4 Rh5 6.f4 Qb6+ 7.Qe3 Rb8 8.Qxb6 Rxb6
± (0.80) Depth: 11/23 00:00:00 1117kN
1.Nxc5 bxc5 2.Re1 Rb7 3.Re2 c4 4.g3 Rc8 5.Rxa5 Rd8 6.Rd5 Rxd5 7.Qxd5 Rxb2 8.Qxc4 Rb1+
² (0.59) Depth: 12/31 00:00:00 4253kN
1.Nf6+
± (1.10) Depth: 12/39 00:00:01 9885kN
1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 f6 7.Qxe4 Rh7 8.Qe6+ Kg7 9.h3 Qc8 10.Rxf6 Qxe6 11.Rxe6 Rh4 12.Rfe1
+- (2.41) Depth: 12/39 00:00:02 15128kN
1.Nf6+
+- (2.71) Depth: 13/46 00:00:04 25317kN
1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 f6 7.Qxe4 Rh7 8.Qe6+ Kh8 9.g3 Qd8 10.Rd5 Qc7 11.Rfd1 Qc8 12.Rd7 Rxd7 13.Rxd7 Qc1+ 14.Kg2 Qxb2
+- (2.73) Depth: 13/46 00:00:05 33133kN

(, Microsoft 22.09.2009)



Easy stuff for top engines.....
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User avatar
WinPooh
Posts: 276
Joined: Fri Mar 17, 2006 8:01 am
Location: Russia
Full name: Vladimir Medvedev

Re: Kasparov Sacrifice (test position)

Post by WinPooh »

GreKo 6.5:

1q3rk1/r4pp1/1p5p/p1nR4/4N3/P7/1P1Q1PPP/5RK1 w - -

1 122 3 73 1. Nxc5 bxc5 2. Rxc5
2 122 3 417 1. Nxc5 bxc5 2. Rxc5
3 122 3 1525 1. Nxc5 bxc5 2. Rxc5
4 126 3 4048 1. Nxc5 bxc5 2. Rxc5 Re8
5 116 6 10092 1. Nxc5 bxc5 2. Rc1 Re8 3. Rdxc5
6 119 7 22999 1. Nxc5 bxc5 2. Rc1 Rc8 3. Rcxc5 Rxc5 4. Rxc5
7 119 9 45670 1. Nxc5 bxc5 2. Rc1 Rc8 3. Rcxc5 Rxc5 4. Rxc5
8 122 15 99066 1. Nxc5 bxc5 2. Rc1 Rb7 3. Qxa5 Rb5 4. Qa6 Rxb2 5. Rdxc5
9 118 28 252986 1. Nxc5 bxc5 2. Rc1 Rb7 3. Qxa5 Re8 4. Rdxc5 Rxb2 5. Rc7
10 111 76 758943 1. Nxc5 bxc5 2. Rxc5 Rd8 3. Qc3 a4 4. Qc2 Rb7 5. Qxa4 Rxb2
11 112 115 1170693 1. Nxc5 bxc5 2. Rxc5 Rd8 3. Qc3 a4 4. Rc1 Rad7 5. Rc8 Qb5 6. Rxd8+ Rxd
8
12 114 212 2239517 1. Nxc5 bxc5 2. Rxc5 Rd8 3. Qc3 a4 4. Rc1 Rad7 5. Qc2 Qf4 6. Re1 Rd2
13 110 451 4862674 1. Nxc5 bxc5 2. Rxc5 Rd8 3. Qc3 a4 4. Rc4 Rb7 5. Rg4 g6 6. Rb4 Rb6 7.
Rxb6 Qxb6
14 113 1145 12453062 1. Nxc5 bxc5 2. Rxc5 a4 3. Rc4 Re8 4. Qb4 Qxb4 5. axb4 Re2 6. Rc8+ Kh7
7. Rb1 Rae7 8. f3
15 115 2023 22247195 1. Nxc5 bxc5 2. Rxc5 a4 3. Rc4 Re8 4. Qb4 Qa8 5. Rfc1 Rb7 6. Qc3 Rbe7
7. Rg4 Re5 8. b4 axb3 9. Qxb3
16 114 4406 48856267 1. Nxc5 bxc5 2. Rxc5 a4 3. Rc4 Re8 4. Qb4 Qa8 5. Rfc1 Rae7 6. Qxe7 Rxe
7 7. Rc8+ Qxc8
17 164 9978 110422506 1. Nf6+!
17 278 76842 868079531 1. Nf6+ gxf6 2. Qxh6 f5 3. Qg5+ Kh8 4. Qf6+ Kg8 5. Rxf5 Ne4 6. Qh4 Qd6
7. Qxe4 Qg6 8. Re1 Re7 9. Qxe7 Qxf5 10. h4 Rc8
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yanquis1972
Posts: 1766
Joined: Wed Jun 03, 2009 12:14 am

Re: Kasparov Sacrifice (test position)

Post by yanquis1972 »

the new twisted logic has a bit of trouble with this one, relatively speaking:

[+2.86] d=20 1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 f6 7.Qxe4 Qc8 8.Rh5 Rg7 9.Re1 Rd8 10.Qh4 Kf7 11.Rh7 Qf5 12.Rxg7+ Kxg7 13.Re7+ Kg8 (0:00:45) 71341kN
[+2.84] d=19 1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 f6 7.Qxe4 Qc8 8.Rf4 Re8 9.Qg6+ Rg7 10.Qxf6 b5 11.Rd1 Qc2 12.Qd4 (0:00:36) 57468kN
[+2.77] d=18 1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 f6 7.Qxe4 Qc8 8.Rh5 Rg7 9.Qd5+ Rgf7 10.Rd1 Re8 11.Rh7 Re6 (0:00:29) 47005kN
[+2.93] d=17 1.Nf6+ gxf6 2.Qxh6 f5 3.Qg5+ Kh8 4.Qf6+ Kg8 5.Rxf5 Ne4 6.Qh4 f6 7.Qxe4 Qc8 8.Re1 Re7 9.Qg4+ Rg7 10.Qf3 Rd8 11.Rxf6 (0:00:25) 40866kN
[+0.75] d=17 1.Nxc5 bxc5 2.Rc1 Re7 3.Rdxc5 Rfe8 4.h3 Re2 5.Qxe2 Rxe2 6.Rc8+ Qxc8 7.Rxc8+ Kh7 8.b4 axb4 9.axb4 Rb2 10.Rc4 Kg6 11.Kf1 Rd2 (0:00:18) 29520kN
[+0.75] d=16 1.Nxc5 bxc5 2.Re1 Rb7 3.Re2 Qc7 4.Rde5 f6 5.Qd5+ Kh7 6.Re6 Rd8 7.Qf5+ Kg8 8.Re8+ Rxe8 9.Rxe8+ Kf7 10.Qe6+ Kg6 11.Qg4+ Kf7 12.Re2 Kg8 13.Qc4+ Kh7 (0:00:09) 14590kN
[+0.84] d=15 1.Nxc5 bxc5 2.Re1 Rb7 3.Re2 Qc7 4.Rde5 f6 5.Qd5+ Kh7 6.Qd3+ g6 7.Rd5 Rfb8 8.Re1 Qf7 9.Rxc5 Rxb2 10.Rxa5 (0:00:06) 9538kN
[+0.82] d=14 1.Nxc5 bxc5 2.Re1 Rb7 3.Re2 Qc7 4.Qc2 Rc8 5.f3 c4 6.Qc3 Rcb8 7.Qd4 f6 8.f4 (0:00:04) 7202kN
[+0.76] d=14 1.Nd6 Rd7 2.f3 Rfd8 3.Rd1 Nb3 4.Qf4 Qc7 5.Qe5 Re7 6.Qf5 Re2 7.Re5 Rxe5 8.Qxe5 (0:00:03) 5450kN
[+1.00] d=13 1.Nd6 Rd8 2.Rd1 Rad7 3.Qd4 f6 4.b4 axb4 5.axb4 Ne6 6.Qd2 f5 7.f3 (0:00:02) 3467kN
[+0.99] d=12 1.Nd6 Re7 2.Qd4 Re2 3.Nf5 Ne6 4.Nxh6+ Kh8 5.Qc3 Qf4 6.Nf5 Re8 7.Rfd1 (0:00:00) 897kN
[+1.07] d=11 1.Nd6 Re7 2.Qd4 Re2 3.Nf5 Ne6 4.Nxh6+ Kh8 5.Qc3 Qc7 6.Rh5 Rc8 7.Nf5+ Kg8 (0:00:00) 626kN
[+1.10] d=10 1.Nd6 Re7 2.Qd4 Re2 3.Nf5 Ne6 4.Nxh6+ Kh8 5.Qc3 Nf4 6.Rg5 (0:00:00) 460kN
[+0.84] d=10 1.Nxc5 bxc5 2.Re1 Rb7 3.Qxa5 Rxb2 4.Qxc5 Re8 5.Rdd1 Rxe1+ 6.Rxe1 Rd2 7.a4 (0:00:00) 321kN
[+1.07] d=9 1.Nxc5 bxc5 2.Re1 Rb7 3.Re2 Qc7 4.Qc2 Rc8 5.Ree5 Qb6 (0:00:00) 203kN
[+1.17] d=8 1.Nxc5 bxc5 2.Rxc5 Rb7 3.Rb1 Rb5 4.Rxb5 Qxb5 5.Re1 Rb8 6.Re7 Qxb2 7.Qxa5 (0:00:00) 65kN
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User avatar
AdminX
Posts: 6363
Joined: Mon Mar 13, 2006 2:34 pm
Location: Acworth, GA

Re: Kasparov Sacrifice (test position)

Post by AdminX »

31: Kasparov,G - Karpov,A, Match Kasparov vs Karpov 2009
[d]1q3rk1/r4pp1/1p5p/p1nR4/4N3/P7/1P1Q1PPP/5RK1 w - - 0 1

Analysis by Twisted Logic 20090922:

22.Nxc5 bxc5 23.Re1 Rb7 24.Qxa5 Rxb2 25.Qxc5 Re8 26.Rdd1 Rxe1+ 27.Rxe1 Rd2 28.a4
+/- (1.17) Depth: 8/16 00:00:00 66kN
+/- (0.84) Depth: 10/21 00:00:00 321kN

22.Nd6 Rd7 23.f3 Rfd8 24.Rd1 Nb3 25.Qf4 Qc7 26.Qe5 Re7 27.Qf5 Re2 28.Re5 Rxe5 29.Qxe5
+/- (1.10) Depth: 10/21 00:00:00 461kN
+/- (0.76) Depth: 14/29 00:00:05 5450kN

22.Nxc5 bxc5 23.Rxc5 Rd8 24.Qc1 Rb7 25.Rc2 Rb3 26.Re1 a4 27.Rce2 Qb5 28.h3 Rbd3 29.Qc2 Rb3 30.h4 h5 31.Qc7
+/- (0.82) Depth: 14/29 00:00:06 7202kN
+/- (0.84) Depth: 17/34 00:00:29 33056kN

22.Nf6+ gxf6 23.Qxh6 f5 24.Qg5+ Kh8 25.Qf6+ Kg8 26.Rxf5 Ne4 27.Qh4 f6 28.Qxe4 Qc8 29.Rf3 Rg7 30.Re1 Kh8 31.Rf5 Qd7 32.b3 Kg8 33.Qc4+ Qf7 34.Rd5 Re8
+- (2.93) Depth: 17/42 00:00:46 49559kN
+- (3.05) Depth: 22/48 00:03:38 225mN
"Good decisions come from experience, and experience comes from bad decisions."
__________________________________________________________________
Ted Summers
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Eelco de Groot
Posts: 4692
Joined: Sun Mar 12, 2006 2:40 am
Full name:   Eelco de Groot

Positional Knightmove counterpart of testposition

Post by Eelco de Groot »

Eelco de Groot wrote: But it seems 21... Nc5 was wrong and after 21... Ne5 the game would at least not have been over instantly.
A more positional move to be found, not very hard is in the position just before this, 21... Nc5 was wrong but after 21... Ne5, if Karpov would have played that, White still has a big advantage, but not a forcing sacrifice. The best move for White now is in my opinion a temporary Knight retreat so something of the opposite of the move in John's test. Stockfish finds it easily but for Ancalagon it was harder, it needs a long time to see that other moves are worse, especially a move like 22.Rd1 (or f.e. 22.Re1) is not as strong as the best.


Build 304 sees advantage after 22. Rd1 that is not really there...

[d]1q3rk1/r4pp1/1p5p/p2Rn3/4N3/P7/1P1Q1PPP/5RK1 w - -

Engine: Ancalagon 1.3 Weak Squares 180 Board Control middlegame 50 endgame 50
Build 304 (Athlon 2009 MHz, 256 MB) by Romstad, Costalba, Kiiski, de Groot

4 0:18 +1.00 22.Qd4 Nc6 23.Qd3 Rd8 24.Rd1 Rxd5
25.Qxd5 Ne7 26.Qc4 (9.901.638) 522

4 0:18 +0.88 22.Re1 Re7 23.Nd6 Rd8 24.Rd1 Red7
25.b3 Qc7 (9.901.638) 522

4 0:18 +0.73 22.Rd4 Re7 23.Nd6 Rd8 24.Rd1 Re6
25.f4 Nc6 (9.901.638) 522
_____________________________________________________________________

4 0:24 +1.32 22.Rd1 Re7 23.Nd6 f6 24.f4 Nf7
25.Nf5 Re4 (12.960.057) 519

4 0:24 +1.00 22.Qd4 Nc6 23.Qd3 Rd8 24.Rd1 Rxd5
25.Qxd5 Ne7 26.Qc4 (12.960.057) 519

4 0:24 +0.88 22.Re1 Re7 23.Nd6 Rd8 24.Rd1 Red7
25.b3 Qc7 (12.960.057) 519
_____________________________________________________________________

4 0:37 +1.32 22.Rd1 Re7 23.Nd6 f6 24.f4 Nf7
25.Nf5 Re4 (19.196.592) 515

4 0:37 +1.07 22.Ng3 Re8 23.Nf5 Ng4 24.Rd6 g6
25.f3 gxf5 26.fxg4 (19.196.592) 515

4 0:37 +1.00 22.Qd4 Nc6 23.Qd3 Rd8 24.Rd1 Rxd5
25.Qxd5 Ne7 26.Qc4 (19.196.592) 515
_____________________________________________________________________

5 0:43 +1.31 22.Qd4 Nc6 23.Nf6+ gxf6 24.Qxf6 Ne7
25.Rh5 Ng6 26.Rxh6 (22.847.532) 520

5 0:43 +1.25 22.Rd1 Nc4 (22.847.532) 520

5 0:43 +1.15 22.Ng3 f6 23.Nf5 Qc8 24.Nd6 Qg4
25.Qe3 Rb8 26.f4 Ng6 (22.847.532) 520
_____________________________________________________________________

6 0:57 +1.14 22.Rd1 Nc4 23.Qd4 Rc7 24.Nd6 Nxd6
25.Rxd6 b5 26.b4 axb4 27.axb4 (30.004.603) 522

6 0:57 +1.09 22.Ng3 f6 23.Nf5 Qc8 24.Nd6 Qb8
25.f4 Nf7 26.Qd4 Nxd6 27.Rxd6 Rb7
28.Qd5+ Kh7 (30.004.603) 522

6 0:57 +1.07 22.Qd4 Nc6 23.Nf6+ gxf6 24.Qxf6 Ne7
25.Rh5 Ng6 26.Rxh6 Rd7 (30.004.603) 522
_____________________________________________________________________

7 1:29 +1.21 22.Ng3 f6 23.Nf5 Qc8 24.Nd6 Qb8
25.f4 Nf7 26.Nf5 g6 27.Nh4 Kh7 (47.281.761) 528

7 1:29 +0.99 22.Rd1 Nc4 23.Qd4 Rc7 24.Nd6 Nxd6
25.Rxd6 b5 26.b4 Rc4 27.Qb2 axb4
28.axb4 (47.281.761) 528

7 1:29 +0.78 22.Qd4 Nc6 23.Qd3 Re7 24.Nd6 Rd8
25.Rd1 Red7 26.Qd2 Ne5 27.b3 (47.281.761) 528
_____________________________________________________________________

8 2:53 +1.06 22.Rd1 Re7 (90.843.353) 523

8 2:53 +1.06 22.Ng3 f6 23.Nf5 Qc8 24.Nd6 Qa6
25.Qc2 Kh8 26.f4 Ng4 27.Rd3 Re7 (90.843.353) 523

8 2:53 +0.91 22.Qd4 Nc6 23.Qd3 Re8 24.Nd6 Rd8
25.Rd1 Rad7 26.b3 Ne5 27.Qd4 f6 (90.843.353) 523
_____________________________________________________________________

9 7:57 +1.03 22.Rd1 Re7 23.Nd6 Ng4 24.h3 Nf6
25.Rd3 Rd8 26.Ne4 Rxd3 27.Nxf6+ gxf6
28.Qxd3 b5 (243.664.441) 510

9 7:57 +1.03 22.Ng3 f6 (243.664.441) 510

9 7:57 +0.65 22.Qd4 Nc6 23.Qc3 Ne7 24.Rd2 Nf5
25.Qf3 Qc8 26.Nd6 Nxd6 27.Rxd6 Qc5
28.Rc6 Qb5 (243.664.441) 510
______________________________________________________________________

9 8:09 +1.03 22.Rd1 Re7 23.Nd6 Ng4 24.h3 Nf6
25.Rd3 Rd8 26.Ne4 Rxd3 27.Nxf6+ gxf6
28.Qxd3 b5 (249.699.062) 510

9 8:09 +1.03 22.Ng3 f6 (249.699.062) 510

9 8:09 +0.79 22.f3 Re7 23.Rd1 Re6 24.b3 Qc7
25.Rc1 Qb8 26.Ng3 Rfe8 27.Nf5 Qa7
28.Nd6 (249.699.062) 510
______________________________________________________________________

9 9:24 +1.03 22.Rd1 Re7 23.Nd6 Ng4 24.h3 Nf6
25.Rd3 Rd8 26.Ne4 Rxd3 27.Nxf6+ gxf6
28.Qxd3 b5 (285.864.504) 506

9 9:24 +1.03 22.Ng3 f6 (285.864.504) 506

9 9:24 +0.83 22.f4 Nc4 23.Qd4 Rc7 24.a4 Re8 25.b3 Qc8
26.h3 Rce7 27.Nf6+ gxf6 28.bxc4 Re6
29.Rd7 Qc5 30.Qxc5 bxc5 (285.864.504) 506
_______________________________________________________________________

10 15:39 +1.29 22.Ng3 f6 23.Nf5 Kh8 24.Rd1 Qc8
25.Nd6 Qg4 26.Qe3 Rb8 27.h3 Qg6
28.f4 Nc6 29.Nf5 (473.282.134) 503

10 15:39 +0.90 22.f4 Ng4 23.h3 Qe8 24.Rd4 f5 25.Qd3 fxe4
26.Rxe4 Re7 27.Rxe7 Qxe7 28.hxg4 Qc5+
29.Kh2 Re8 (473.282.134) 503

10 15:39 +0.84 22.Rd1 Re7 23.Nd6 Re6 24.b3 Qc7
25.Nb5 Qb7 26.Qd4 Qe7 27.Nd6 Ng4
28.Qa1 Re2 29.Nf5 (473.282.134) 503
_______________________________________________________________________

11 35:43 +1.19 22.Ng3 f6 23.Nf5 Kh8 24.Rd1 Rc7
25.Qe3 Nc4 26.Qd4 Re8 27.Nh4 Kh7
28.Rd7 Rxd7 29.Qxd7 Nxb2 (1.093.792.150) 510

11 35:43 +0.93 22.f4 Ng4 23.h3 Qe8 24.Qd3 f5 25.Rd4 Qe6
26.hxg4 fxe4 27.Rxe4 Qxg4 28.Qb3+ Raf7
29.Qxb6 Rxf4 30.Rexf4 Rxf4 31.Rxf4 Qxf4
32.Qxa5 (1.093.792.150) 510

11 35:43 +0.88 22.Rd1 Re7 23.Nd6 Ng4 24.Rd4 Rd8
25.f3 Nf6 26.Ne4 Rxd4 27.Nxf6+ gxf6
28.Qxd4 Qe8 29.g3 Qc6 (1.093.792.150) 510

This is not my best version, at least I hope I managed to find a slight improvement, but with build 304 I let the analysis run the longest and it shows that 22. Rd1 is not very good, more clearly.

I wonder if Kasparov had this whole line already prepared in his opening database, on that famous notebook of his? Just 22 moves, seems not impossible that he would have analyzed it already up to this point...

Eelco
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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rightrook
Posts: 1452
Joined: Wed Mar 08, 2006 8:45 pm

Re: Kasparov Sacrifice (test position)

Post by rightrook »

Thanks John.....good test move...

Hiarcs 11.2 plays it instantly on my slow COMPAQ Presario...

:lol:

regards

Robert
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Edsel Apostol
Posts: 803
Joined: Mon Jul 17, 2006 5:53 am
Full name: Edsel Apostol

Re: Kasparov Sacrifice (test position)

Post by Edsel Apostol »

Twisted Logic 20090922 with King Attacks Aggression Level = 9:

Code: Select all

FEN: 1q3rk1/r4pp1/1p5p/p1nR4/4N3/P7/1P1Q1PPP/5RK1 w - - 0 1 

T20090922:
  8/17	00:00	     120.293	0	+1.22	Ne4xc5 b6xc5 Rd5xc5 Rf8d8 Qd2c2 Ra7b7 Rf1b1 Rb7d7 b2b4 a5xb4 Rb1xb4
  9/20	00:00	     212.502	0	+1.04	Ne4xc5 b6xc5 Rf1e1 Ra7b7 Re1e2 Qb8c7 Qd2c3 Rf8d8 Qc3xc5 Qc7xc5 Rd5xc5
 10/20	00:00	     354.654	0	+0.80	Ne4xc5 b6xc5 Rf1e1 Ra7b7 Re1e2 Qb8c7 Qd2c2 Rf8d8 Re2e5 c5c4 Rd5xa5
 10/22	00:00	     597.832	0	+1.27	Ne4d6 Ra7d7 Qd2d4 h6h5 Rf1d1 Rf8d8 f2f3 Nc5b7 Nd6f5 Rd7xd5 Nf5e7+ Kg8h7 Ne7xd5
 11/20	00:00	     727.602	0	+1.28	Ne4d6 Ra7d7 Qd2d4 Rf8d8 Rf1d1 Nc5e6 Qd4e5 Rd8c8 b2b3 Rc8c2 f2f4
 12/26	00:01	     909.159	831.801	+1.02	Ne4d6 Ra7d7 Qd2d4 Rf8d8 Rf1d1 f7f6 b2b4 a5xb4 a3xb4 Nc5b7 Nd6f5 Rd7xd5 Nf5e7+ Kg8h7 Ne7xd5
 13/24	00:01	   1.289.335	851.046	+1.05	Ne4d6 Ra7d7 Qd2d4 Rf8d8 Rf1d1 f7f6 b2b4 a5xb4 a3xb4 Nc5e6 Qd4d2 f6f5 h2h3
 14/26	00:02	   2.510.156	897.766	+0.73	Ne4d6 Ra7d7 f2f3 Rf8d8 Rf1d1 Nc5b7 Nd6f5 Rd7xd5 Nf5e7+ Kg8h8 Ne7xd5 Nb7c5 b2b4 a5xb4 Qd2xb4
 14/32	00:04	   3.787.645	868.925	+2.65	Ne4f6+ g7xf6 Qd2xh6 f6f5 Qh6g5+ Kg8h8 Qg5f6+ Kh8g8 Rd5xf5 Nc5e6 Rf5f3 Rf8d8 Rf3g3+ Kg8f8 Rg3h3 Kf8e8 Rh3h8+ Ke8d7 Rh8xd8+ Ne6xd8 Rf1e1
 15/38	00:05	   5.029.816	865.419	+2.84	Ne4f6+ g7xf6 Qd2xh6 f6f5 Qh6g5+ Kg8h8 Qg5f6+ Kh8g8 Rd5xf5 Nc5e4 Qf6h4 Qb8d6 Qh4xe4 Qd6g6 Rf1d1 Ra7c7 Qe4e5 Rc7c2
 16/34	00:07	   6.514.199	868.559	+2.99	Ne4f6+ g7xf6 Qd2xh6 f6f5 Qh6g5+ Kg8h8 Qg5f6+ Kh8g8 Rd5xf5 Nc5e4 Qf6h4 f7f6 Qh4xe4 Ra7h7 f2f4 Qb8c8 Rf1e1 Kg8h8 Qe4d3
 17/38	00:09	   8.593.122	870.189	+2.89	Ne4f6+ g7xf6 Qd2xh6 f6f5 Qh6g5+ Kg8h8 Qg5f6+ Kh8g8 Rd5xf5 Nc5e4 Qf6h4 f7f6 Qh4xe4 Ra7h7 f2f4 Qb8c8 Rf1d1 Kg8h8 b2b3 Rf8e8
 18/40	00:16	  13.893.946	868.371	+2.84	Ne4f6+ g7xf6 Qd2xh6 f6f5 Qh6g5+ Kg8h8 Qg5f6+ Kh8g8 Rd5xf5 Nc5e4 Qf6h4 f7f6 Qh4xe4 Ra7h7 f2f4 Qb8c8 Rf1e1 Kg8h8 h2h3 Qc8d7 Rf5d5
 19/43	00:27	  23.548.751	864.174	+2.83	Ne4f6+ g7xf6 Qd2xh6 f6f5 Qh6g5+ Kg8h8 Qg5f6+ Kh8g8 Rd5xf5 Nc5e4 Qf6h4 f7f6 Qh4xe4 Ra7h7 h2h3 Qb8d6 Rf5d5 Qd6c7 Rf1d1 Kg8h8 Rd5d6 Qc7c5
 20/44	01:04	  55.195.987	853.488	+2.80	Ne4f6+ g7xf6 Qd2xh6 f6f5 Qh6g5+ Kg8h8 Qg5f6+ Kh8g8 Rd5xf5 Nc5e4 Qf6h4 f7f6 Qh4xe4 Ra7h7 h2h3 Qb8d6 Rf1c1 Qd6d2 Qe4d5+ Qd2xd5 Rf5xd5 Rh7e7 Rc1c6 Re7e1+ Kg1h2 Re1e5 Rd5d7
 21/47	01:46	  90.962.610	856.755	+2.89	Ne4f6+ g7xf6 Qd2xh6 f6f5 Qh6g5+ Kg8h8 Qg5f6+ Kh8g8 Rd5xf5 Nc5e4 Qf6h4 f7f6 Qh4xe4 Ra7h7 h2h3 Qb8d6 Rf1c1 Qd6d2 Qe4d5+ Qd2xd5 Rf5xd5 Rh7e7 Rc1c6 Re7e1+ Kg1h2 Re1e5 Rd5d7 Re5e2
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