Author: Uri Blass
Date: 12:51:37 08/10/02
Go up one level in this thread
On August 10, 2002 at 15:11:03, Mike Byrne wrote:
>This game illustrates why Aristarch is fun to watch.
>
>[Event "?"]
>[Site "?"]
>[Date "?"]
>[Round "-"]
>[White "Aristarch"]
>[Black "Crafty 17.16 Se"]
>[Result "0-1"]
>[ECO "D03/03"]
>[Opening "Queen's pawn Torre/Colle"]
>[Time "05:21:20"]
>[TimeControl "300"]
>
>1. d4 d5 2. Nf3 Nf6 3. Bg5 e6 4. e3 c5 5. Nbd2 Be7 6. c3 Qb6 7. Rb1 cxd4 {
>0.07/8 9 } 8. exd4 { 0.17/8 4 } 8... O-O { 0.29/9 4 } 9. Bd3 { 0.18/8 3 } 9...
>Qc7 { 0.16/9 8 } 10. Ne5 { 0.26/9 6 } 10... Nbd7 { 0.17/9 9 } 11. Qe2 { 0.48/9 6
>} 11... h6 { 0.19/9 9 } 12. Bf4 { 0.35/9 1 } 12... Nxe5 { 0.37/9 6 } 13. Bxe5 {
>0.42/10 1 } 13... Qa5 { 0.26/10 7 } 14. a3 { 0.49/9 3 } 14... Nd7 { 0.36/9 5 }
>15. Bf4 { 0.52/9 2 } 15... Qb6 { 0.29/9 8 } 16. O-O { 0.56/8 1 } 16... Bd6 {
>0.37/9 5 } 17. Bxd6 { 0.58/10 6 } 17... Qxd6 18. Qe3 { 0.48/10 12 } 18... Nf6 {
>0.26/9 8 } 19. f4 { 0.51/9 2 } 19... Bd7 { 0.27/9 4 } 20. Rf3 { 0.57/10 10 }
>20... Rad8 { 0.31/9 7 } 21. Rh3 { 0.55/10 10 } 21... Rc8 { 0.20/8 7 } 22. Qg3 {
>0.78/9 2 } 22... Kh8 { 0.33/8 7 } 23. Qg5 { 0.59/10 5 } 23... Nh7 { 0.31/9 6 }
>24. Qh4 { 0.53/10 1 } 24... Nf6 { 0.41/9 4 } 25. Nf3 { 0.70/9 3 } 25... Qb6 {
>0.34/8 2 } 26. Ne5 { 0.81/9 3 } 26... Bb5 27. Bc2 { 0.77/9 4 } 27... Qd6 28. Re1
>{ 0.96/8 2 } 28... Kg8 { 0.65/7 2 } 29. Qg3 { 1.42/8 2 } 29... Ne4 { 1.50/8 6 }
>30. Bxe4 { 1.74/9 4 } 30... dxe4 31. Rxe4 { 1.74/8 1 } 31... Kh7 { 1.73/7 4 }
>32. Qg4 { 2.09/9 10 } 32... Qd5 { 1.83/7 6 } 33. f5 { 2.15/8 4 } 33... Qa2 {
>2.39/8 25 } 34. Re1 { 2.81/10 1 } 34... exf5 { 3.46/8 23 } 35. Qxf5+ { 1.70/10
>21 } 35... Kg8 36. Ng4 { 2.86/9 6 } 36... Rfe8 { 2.79/9 8 } 37. Rd1 { 2.46/8 1 }
>37... Be2 { 0.31/6 1 }
>{
>[D] 2r1r1k1/pp3pp1/7p/5Q2/3P2N1/P1P4R/qP2b1PP/3R2K1 w - - 0 38
>
>Here Aristarch played the very aggressive 38. Nxh6!?, got some pressure but was
>unable to convert, and being a piece down - lost the game. In defense of
>Aristarch, Crafty 17.16 SE would have played the sacrifice Nxh6 as well.
Every program without bugs is going to play Nxh6
White has no choice here.
If white missed a win it was probably in an earlier move and Ng4 was wrong but
finding Rg3 is not an easy task.
Here is Deep Fritz's analysis(p800 32 Mbytes hash)
Aristarch - Crafty 17.16 Se
[D]2r2rk1/pp3pp1/7p/1b2NQ2/3P4/P1P4R/qP4PP/4R1K1 w - - 0 1
Analysis by Deep Fritz:
36.Qxc8--
= (-0.03) Depth: 1/3 00:00:00
36.Qxc8-- Rxc8
-+ (-2.62) Depth: 1/3 00:00:00
36.Rxh6!
-+ (-2.22) Depth: 1/3 00:00:00
36.Rxh6! gxh6
-+ (-1.56) Depth: 1/3 00:00:00
36.Rhe3!
µ (-0.72) Depth: 1/4 00:00:00
36.Rhe3! Qxb2
± (1.16) Depth: 1/4 00:00:00
36.Qf2!
± (1.25) Depth: 1/10 00:00:00
36.Qf2!
+- (1.66) Depth: 1/10 00:00:00
36.Qf2 Rfe8
+- (1.44) Depth: 2/5 00:00:00
36.Qf2 f6 37.Nf3
+- (1.59) Depth: 3/9 00:00:00
36.Qf2 Rfe8 37.Rhe3 Qd5
+- (1.56) Depth: 4/14 00:00:00 2kN
36.Qf2 Rfe8 37.Rhe3 f6 38.Nf3 Rxe3
+- (1.63) Depth: 5/14 00:00:00 11kN
36.Ng6!
+- (1.66) Depth: 5/20 00:00:00 16kN
36.Rg3!
+- (1.69) Depth: 5/20 00:00:00 24kN
36.Rg3! Rce8 37.Qf6 g6
+- (1.78) Depth: 5/20 00:00:00 29kN
36.Rg3 Rce8 37.Qf6 g6 38.Qf3 Qxb2 39.Qxb7
+- (1.66) Depth: 6/26 00:00:00 40kN
36.Ng4!
+- (1.69) Depth: 6/26 00:00:00 58kN
36.Ng4! Rfe8 37.Rxe8+ Rxe8 38.Qxb5 Qa1+ 39.Kf2 Qe1+ 40.Kf3
+- (3.50) Depth: 6/26 00:00:00 83kN
36.Ng4 Rfe8 37.Rxe8+ Rxe8 38.Qxb5 Qa1+ 39.Kf2 Qe1+ 40.Kf3 Qe4+ 41.Kg3 Qe1+
+- (3.50) Depth: 7/25 00:00:00 124kN
36.Ng4 Rfe8 37.Rxe8+ Rxe8 38.Qxb5 Qa1+ 39.Kf2 Qe1+ 40.Kf3 Qe4+ 41.Kg3 Qe1+
+- (3.38) Depth: 8/26 00:00:00 221kN
36.Ng4--
+- (3.06) Depth: 9/26 00:00:00 423kN
36.Ng4-- Rfe8 37.Rxe8+ Rxe8 38.Qxb5 Qa1+ 39.Kf2 Qe1+ 40.Kf3 Qe4+ 41.Kg3 Qe1+
+- (2.59) Depth: 9/27 00:00:00 589kN
36.Ng4 Rfe8 37.Rxe8+ Rxe8 38.Qxb5 Qa1+ 39.Kf2 Qe1+ 40.Kf3 Qe4+ 41.Kg3 Qe1+
+- (2.59) Depth: 10/28 00:00:02 1668kN
36.Ng4--
+- (2.28) Depth: 11/30 00:00:08 5681kN
36.Ng4--
+- (2.28) Depth: 11/31 00:00:09 6206kN
36.Ng4!
+- (2.59) Depth: 12/34 00:00:24 16055kN
36.Ng4--
+- (2.28) Depth: 13/36 00:02:29 98986kN
36.Ng4-- Rfe8 37.Rxe8+ Rxe8 38.Qxb5 Qb1+ 39.Kf2 Qe1+ 40.Kf3 Qe4+ 41.Kg3 Qe1+
+- (1.94) Depth: 13/37 00:03:00 119604kN
36.Rg3!
+- (1.97) Depth: 13/37 00:05:15 209493kN
36.Rg3! Qe6 37.Qxe6 fxe6 38.Rg6 Rfe8 39.Re3 Rf8 40.h4 Rf1+
+- (2.16) Depth: 13/37 00:06:44 265363kN
(Blass, Tel-aviv 10.08.2002)
I also do not agree that it is a sacrifice.
I believe that white can get at least a draw with that move because 4 pawns are
enough for a piece so you need to look for the losing mistake
later in the game.
Aristarch could get a draw in the game by perpetual check(it is not forced
perpetual but I believe that crafty agreed to repetition based on the game when
aristarch did not want it).
Uri
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