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Subject: Re: Testposition - Tactics, Tactics, Tactics and...

Author: John Merlino

Date: 15:28:21 07/11/01

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On July 11, 2001 at 16:08:38, Sune Larsson wrote:

>
> [D]1r4k1/p2qbpn1/2n1b1p1/3pP2p/1rpP1NP1/4BP1P/1P1Q1R2/RB1N2K1 b - - 0 26
>
> GM Agrest,Evgenij 2529 - IM Berg,Emanuel 2496
>
>
> This position is from the 9th round of the ongoing SWE-ch.
> White has just protected his b-pawn with 26.Nc3-d1, when black unleashes
> the very aggressive 26.-c3!!?. This move starts a veritable turmoil of
> tactical fireworks. Ultra-sharp calculation is a must here, else you're dead.
> Black got the better of it but the experienced GM kept the balance.
>
>
> Test: The real question is if there was a win for black somewhere in
>       this jungle of magical tricks?? A starting point could be after
>       27.Nxc3 hxg4 28.hxg4 *Nxe5!*. The whole game below.
>
>
>
>
>[Event "SM"]
>[Site "SWE"]
>[Date "2001.07.10"]
>[Round "9"]
>[White "Agrest, Evgenij"]
>[Black "Berg, Emanuel"]
>[Result "1/2-1/2"]
>[ECO "E30"]
>[WhiteElo "2529"]
>[BlackElo "2496"]
>[PlyCount "124"]
>[EventDate "2001.07.10"]
>
>1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Bg5 b6 5. f3 h6 6. Bh4 Be7 7. Bf2 d5 8. cxd5
>exd5 9. e3 O-O 10. Bd3 c5 11. Nge2 Nc6 12. O-O c4 13. Bb1 b5 14. a3 Rb8 15. h3
>b4 16. axb4 Rxb4 17. Qc1 Nh5 18. Qc2 g6 19. e4 Be6 20. g4 Nf6 21. e5 Ne8 22.
>Be3 Ng7 23. Qd2 h5 24. Rf2 Qd7 25. Nf4 Rfb8 26. Nd1 c3 27. Nxc3 hxg4 28. hxg4
>Nxe5 29. dxe5 d4 30. Nxe6 Nxe6 31. Nd1 Nc5 32. Bf4 Nb3 33. Qd3 Nxa1 34. Ba2 Nb3
>35. e6 Qxe6 36. Bxb8 Nc1 37. Qe4 Qxe4 38. Bxf7+ Kxf7 39. fxe4+ Ke6 40. Bxa7 Ke5
>41. Rc2 Nd3 42. Rc6 Kf4 43. Kg2 Nxb2 44. Nf2 Bh4 45. Rxg6 Bxf2 46. Kxf2 d3 47.
>Be3+ Kxe4 48. Bd2 Nd1+ 49. Kg3 Rb2 50. Bf4 Nc3 51. Re6+ Kd5 52. Rd6+ Kc4 53.
>Kf3 Nb5 54. Rd8 Nd4+ 55. Ke4 Ne6 56. Rc8+ Nc5+ 57. Kf3 Kd5 58. Rd8+ Ke6 59.
>Rd6+ Ke7 60. Rd5 Ne6 61. Bd6+ Kf7 62. Rxd3 Rb3 1/2-1/2
>
>Sune

Chessmaster 8000's analysis pretty much follows the text after 26...c3, UNTIL
what appears to be White's mistake: 33.Qd3. CM8000 chooses 33.e6! all the way.
After 32...Nb3, here's CM8000's analysis:

Time	Depth	Score	Positions	Moves
0:00	1/3	0.59	983		33. e6 fxe6 34. Qd3 Nxa1 35. Bxb8
					Rxb8 36. Qxg6+ Kh8
0:00	2/6	1.67	32815		33. e6 Qxe6 34. Ba2 R8b7 35. Bxb3
					Qxb3 36. Be5
0:01	3/7	1.55	68132		33. e6 Qxe6 34. Ba2 R8b7 35. Bxb3
					Qxb3 36. Re2 Qc4
0:03	3/8	1.74	214980		33. e6 Qxe6 34. Ba2 R8b7 35. Bxb3
					Qxb3 36. Re2 R4b6
0:07	4/9	1.65	537811		33. e6 Qxe6 34. Ba2 R8b7 35. Bxb3
					Qxb3 36. Ra5 Qe6 37. Re2
0:24	4/10	1.77	1873012		33. e6 Qxe6 34. Ba2 R8b7 35. Bxb3
					Qxb3 36. Ra5 Qc4 37. Re2 Rb3
1:34	5/11	1.71	7006635		33. e6 Qxe6 34. Ba2 R8b7 35. Bxb3
					Qxb3 36. Rc1 Qe6 37. Re2 Qd7 38.
					Nf2
5:09	6/12	1.62	25422783	33. e6 Qxe6 34. Ba2 R8b7 35. Bxb3
					Rxb3 36. Rc1 d3 37. Rh2 Bf6 38.
					Qe3 Qd7 39. Be5

Great position and a great game!

jm



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