Author: Uri Blass
Date: 10:04:09 10/05/01
Go up one level in this thread
On October 04, 2001 at 17:25:28, Thorsten Czub wrote:
>hi - i would like to discuss the games that have been played from
>29.9-03.10 here in berlin.
>
>the machines were at least 1200 Mhz Athlons, most programs had
>1400 Mhz, and Patzer even had - as a dual program - 2x1200 Mhz Athlons.
>
>the time control in berlin was 40/90, rest in 30'. Long enough to get a good
>impression and to observe the games.
>
>the first game i want to discuss is the game zarkov4.5T vs. Gambit-Tiger14.6.
>
>[Event "1.BELCT2001"]
>[Site "Berlin"]
>[Date "2001.09.30"]
>[Round "2"]
>[White "Zarkov4.5T"]
>[Black "Gambit-Tiger14.6"]
>[Result "0-1"]
>[TimeControl "7200"]
>
>1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Ba4 Bc5 6. Nxe5 O-O 7. Nd3 Bb6
>8. e5 Ne8 9. Nd5 d6 10. Ne3 Qg5 11. exd6 Nxd6 12. O-O N4f5 13. Ne1 Nxe3 14.
>fxe3 Bg4 15. Nf3 Qh5 16. h3 Be6 17. Nd4 Qe5 18. Nxe6 fxe6 19. Bb3 Rxf1+ 20.
>Kxf1 Rf8+ 21. Kg1 c5 22. Qg4 c4 23. d4 Qf6 24. Qe2 cxb3 25. axb3 e5 26. c3
>Ne4 27. Bd2 Qf2+ 28. Qxf2 Rxf2 29. Be1 Rxb2 30. b4 exd4 31. cxd4 Re2 32.
>Kh2 Rxe3 33. Rd1 Nf6 34. d5 Nxd5 35. Bf2 Re7 36. Bxb6 Nxb6 37. b5 Kf7 38.
>Ra1 Nc8 39. Rf1+ Ke6 40. Ra1 b6 41. Re1+ Kd7 42. Ra1 Re5 43. Kg3 Rxb5 44.
>Kf4 a5 45. Ke3 Rb2 46. Kf3 Nd6 47. Ra4 Kc6 48. Rh4 b5 49. Rxh7 b4 50. Rh8
>b3 51. g4
>{White resigns} 0-1
>
>
>
>
>I was operating Zarkov4.5T. Since i know Gambit-Tiger and Zarkov very good,
>i was shocked when Zarkov played 18.Nxe6?
>
>The reason is very obvious from the point of view of a human beeing:
>
>white is underdeveloped on the king-side and the knight on d4 is on of the
>only pieces that could help white. but the exchange on e6 is not only
>deleting a defender, it also opens the f-line.
>
>within nearly a move, black gets advantage and wins this game.
>
>i am pretty much confident with the way gambit-tiger reacted.
>
>it instantly saw that black gets advantage now.
>
>i do NOT think that zarkov is a weak program. in opposite,
>zarkov 4.5 T played a very good tournament with amazing games. but in THIS
>game, it made a mistake. maybe the point was to deep.
>
>but i know that e.g. gambit-tiger14.6 itself would change from 18.Nxe6 into
>the much better 18.Ne2 {+0,18}.
>
>zarkov4.5T analysis:
>
>Move# 18 Clock= 00:00:00 Target= 999999.0
>00:01.0 117 6-00 35 Nxe6 fxe6 Rxf8+ Rxf8 d4 Qf5 Kh2 Ne4
>00:01.3 155 7-01 47 Nxe6 fxe6 Rxf8+ Rxf8 d4 Qf5 Kh2 Ne4 Bd2
>00:01.8 248 7. 47 Nxe6 fxe6 Rxf8+ Rxf8 d4 Qf5 Kh2 Ne4 Bd2
>00:02.7 436 8-01 38 Nxe6 fxe6 Rxf8+ Rxf8 d4 Qf6 c3 c5 Bc2 Qf2+ Kh2
>00:04.3 732 8. 38 Nxe6 fxe6 Rxf8+ Rxf8 d4 Qf6 c3 c5 Bc2 Qf2+ Kh2
>00:10.8 1948 9-01 49 Nxe6 fxe6 c3 Rxf1+ Qxf1 Rf8 Qe1 Ne4 d3 Nf2 d4 Qg5
>00:13.1 2439 9. 49 Nxe6 fxe6 c3 Rxf1+ Qxf1 Rf8 Qe1 Ne4 d3 Nf2 d4 Qg5
>00:23.1 4425 10-01 38 Nxe6 fxe6 c3 Rxf1+ Qxf1 Rf8 Qe1 c5 d3 Qd5 d4 Ne4
>00:33.4 6565 10. 38 Nxe6 fxe6 c3 Rxf1+ Qxf1 Rf8 Qe1 c5 d3 Qd5 d4 Ne4
>00:54.9 10709 11-01 37 Nxe6 fxe6 c3 Rxf1+ Qxf1 Rf8 Qe1 c5 d3 Nf5 Qf2 Ng3
>01:24.4 16402 11. 37 Nxe6 fxe6 c3 Rxf1+ Qxf1 Rf8 Qe1 c5 d3 Nf5 Qf2 Ng3
>02:47.4 32187 12-01 14 Nxe6 fxe6 c3 Rxf1+ Qxf1 Rf8 Qe1 c5 Bb3 c4 Bc2 Ne4
>
>
>i would like hear your opinion before i present you another interesting
>situation out of the nice tournament we had here in berlin.
I am going to look at it and to see if Nxe6 is losing
I remember that I analyzed it after 19.Bb3 Rxf1+ and Deep Fritz
"started to cry" and saw -1.xx in a few minutes.
I am not sure if Nxe6 is the losing error and I need to analyze move 19 of white
and to see if programs can see a losing evaluation for other moves that are not
19.Bb3
Junior7 has no problem to understand that Nxe6 is not better for white.
Here is some analysis on p200 at playing conditions and it seems that Junior7
can avoid Nxe6 at tournament time control on good hardware
Junior 7 - ,M
r4rk1/ppp2ppp/1b1nb3/4q3/B2N4/4P2P/PPPP2P1/R1BQ1RK1 w - - 0 1
Analysis by Junior 7:
18.a3 Bxd4 19.exd4
³ (-0.31) Depth: 3 00:00:00
18.b4 Bxd4 19.exd4
³ (-0.29) Depth: 3 00:00:00
18.c3 Bxd4 19.cxd4
= (-0.05) Depth: 3 00:00:00
18.Nxe6 fxe6 19.Qg4 Rxf1+
² (0.49) Depth: 3 00:00:00
18.Nxe6 fxe6 19.Rxf8+ Rxf8 20.Qg4 Rf5
² (0.39) Depth: 6 00:00:00 2kN
18.Nxe6 fxe6 19.Bb3 Rxf1+ 20.Qxf1 Rf8 21.Qd3 Ne4
= (0.24) Depth: 9 00:00:01 77kN
18.Nxe6 fxe6 19.Bb3 Rxf1+ 20.Qxf1 Rf8 21.Qd3 Qf6 22.Kh2 Qe5+ 23.Kh1 Rf2
= (-0.12) Depth: 12 00:00:08 880kN
18.Nxe6 fxe6 19.Bb3 c5 20.Rxf8+ Rxf8 21.Qg4 c4 22.Bxc4 Nxc4 23.Qxc4 Qf5 24.d4
= (0.03) Depth: 15 00:01:08 8207kN
18.Nxe6 fxe6 19.Bb3 Rxf1+ 20.Qxf1 Rf8 21.Qe2 c6 22.Qd3 Bc7 23.a4 Ne4
= (-0.14) Depth: 17 00:07:33 51146kN
18.Ne2 Rfd8 19.d4 Qg5 20.e4 Qe5 21.c3 Nxe4 22.Bf4 Qd5 23.Bc2 h6 24.Qd3
= (-0.08) Depth: 17 00:23:08 162337kN
Uri
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