Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: WCCC 2002: Round 2 - WARP vs. DIEP /Including testposition(s)

Author: Uri Blass

Date: 14:18:02 07/07/02

Go up one level in this thread


On July 07, 2002 at 15:34:59, Peter Berger wrote:

>On July 07, 2002 at 08:38:32, Eduard Nemeth wrote:
>
>[Event "WCCC"]
>[Site "Maastricht"]
>[Date "2002.07.07"]
>[Round "2"]
>[White "WARP"]
>[Black "Diep"]
>[Result "1/2-1/2"]
>[ECO "A33"]
>[PlyCount "116"]
>[EventDate "2002.??.??"]
>
>1. c4 c5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. g3 Qb6 7. Nb3 Ne5 8. e4
>Bb4 9. Qe2 d6 10. f4 Nc6 11. Be3 Bxc3+ 12. bxc3 Qc7 13. Bg2 b6 14. O-O O-O 15.
>g4 Bb7 16. g5 Nd7 17. Rf3 Ne7 18. Rh3 Rfc8 19. Qh5 Nf8 20. Nd2 Neg6 21. Rf1 Qc6
>22. Rf2 Qd7 23. f5 exf5 24. exf5 Bxg2 25. Kxg2 Ne5 26. Bd4 Re8 27. Kh1 Rac8 28.
>f6 Ng4 29. Rg2 Re1+ 30. Bg1 Ne5 31. Qh4 Rd1 32. fxg7 Kxg7 33. Ne4 Qf5 34. Qh6+
>Kh8 35. Nxd6 Rxd6 36. Qxd6 Ne6 37. Rhg3 Rd8 38. Qe7 Rd1 39. Qe8+ Kg7 40. Qa4
>Qb1 41. Qb3 Qc1 42. c5 Nf4 43. Rc2 Rxg1+ 44. Rxg1 Qe3 45. Qb1 Qf3+ 46. Rgg2
>Nxg2 47. Rxg2 Nd3 48. Qg1 bxc5 49. h4 Nf4 50. Qf2 Qxg2+ 51. Qxg2 Nxg2 52. Kxg2
>Kg6 53. Kf3 Kf5 54. c4 a5 55. a4 Ke5 56. Ke3 Kf5 57. Kf3 Ke5 58. Ke3 Kf5
>1/2-1/2
>
>I think your analysis misses a few interesting turning points in this game - at
>least one of them should be good for a testposition.
>
>Diep played on a Dual AMD K7 in this game, so no really big hardware although
>quite OK of course :).
>
>The position after opening and in early middlegame was unbalanced.
>
>At move 31 the position is about equal with probably a little advantage for
>Diep.
>
>Then Diep commited a horrible blunder 31...Rd1?? which should have lost the
>game:
>
>WARP - Diep
>[D]2r2nk1/p2q1ppp/1p1p1P2/4n1P1/2P4Q/2P4R/P2N2RP/4r1BK b - - 0 1 am Rd1
>
>This one could be difficult for some other engines, too.

Here is the end of the analysis of movei at depth 11

11 -26 83673 127553954 a7a5 h4e1 d7h3 g1d4 f8d7 e1e4 h3h5 g2g1 a5a4 f6g7 g8g7
d2f3
11 -25 101403 153850144 e5g6
11 -12 104045 158135756 e5g6 h4e1 d7h3 g1d4 g7f6 g5f6 h3d7 e1f2 f8e6 f2f5 d7a4
f5b1
11 -11 110510 168071972 c8d8
11 -8 117392 178523348 c8d8 f6g7 g8g7 h4e1 d7h3 g1d4 h3e6 e1e4 g7g8 e4b7 e5c6
b7c6 e6e1 g2g1 e1d2
11 -7 145975 222148125 g8h8
11 -6 153489 233612692 g8h8 h4e1 d7h3 f6g7 h8g7 g1d4 h3e6 d2e4 f8d7 e4f6 d7c5
f6e4 c5d3
11 -6 153489 233612692 g8h8 h4e1 d7h3 f6g7 h8g7 g1d4 h3e6 d2e4 f8d7 e4f6 d7c5
f6e4 c5d3


>
>You mentioned the next one, the awful 38. Qe8+?? which in my opinion already
>spoils the game to a draw ( although this would be very difficult to prove of
>course)
>
>WARP - Diep
>[D]3r3k/p4p1p/1p1Qn3/4nqP1/2P5/2P3R1/P5RP/6BK w - - 0 1 am Qe8+
>
>This is probably an engine-specific problem, other engines probably have no
>problems here. Easiest looks Qf6+ with a sure win.
>
>Without diagram another maybe interesting one:
>
>WARP - Diep
>8/p4pkp/1p2n3/4n1P1/Q1P5/2P3R1/P5RP/1q1r2BK w - - 0 1 am Qb3
>
>Qb3 ?! isn't really a bad move but it looks quite senseless. If white wants to
>play c5 why not do it right now ? After Qb3 the queen is at a worse position for
>c5.

Movei considers c5 as the best move

9 77 2087 3239103 a4a7 e6f4 a7b7 f4g2 b7g2 d1e1 g2a8 e5c4 a8g2
9 78 3038 4800466 c4c5
9 151 4927 7680207 c4c5 e6c5 a4f4 d1e1 f4f6 g7g8 f6d8 g8g7 d8e7 b1e4 e7f6 g7g8
f6d8 g8g7
9 151 6350 10033388 c4c5 e6c5 a4f4 d1e1 f4f6 g7g8 f6d8 g8g7 d8e7 b1e4 e7f6 g7g8
f6d8 g8g7
10 144 7717 12179728 c4c5 e6c5 a4f4 d1e1 f4f6 g7g8 g5g6 f7g6 f6d8 g8g7 d8e7 e5f7
e7a7 g7f8
10 144 13781 21733749 c4c5 e6c5 a4f4 d1e1 f4f6 g7g8 g5g6 f7g6 f6d8 g8g7 d8e7
e5f7 e7a7 g7f8


>
>
>But then there was also a rather brilliant move that might be a good
>testposition IMHO:
>
>WARP - Diep
>[D]8/p4pkp/1p2n3/2P1n1P1/8/1QP3R1/P5RP/2qr2BK b - - 0 1 bm Nf4
>
>While the obvious 42. .. Nxc5 ?! might have been sufficient to hold after a long
>and dangerous fight, 42...Nf4 !! is clearly the best move, pretty, surprising,
>witty and a clear draw although very deep.
>The mainline to get this with drawscore should be something like 20 ply. Can
>your engine find this one, too ?

Movei00_72f says that it is only 10 plies to find the move and not 20 plies.
finding a draw score may be a different story

10 -125 5262 8544649 e6c5 b3b4 g7g8 b4b5 g8f8 b5e2 d1e1 e2h5 c5e4 h5h6 f8g8
10 -124 9464 15267487 b6c5
10 -122 13314 21308383 b6c5 b3b5 e6f4 b5c5 d1d5 c5a7 f4g2 h1g2 c1c2 g1f2 e5d3
a7b6 c2a2
10 -121 15280 24563000 e6f4
10 -81 17115 27474407 e6f4 g2c2 c1a1 c3c4 a1d4 b3e3 b6c5 e3d4 c5d4 c4c5
10 -81 18411 29649175 e6f4 g2c2 c1a1 c3c4 a1d4 b3e3 b6c5 e3d4 c5d4 c4c5
11 -87 22910 36681099 e6f4 g2c2 c1a1 b3b2 a1b2 c2b2 b6c5 h2h4 g7g6 b2b7 f4e2
g3g2 e2c3 b7a7

Uri



This page took 0.04 seconds to execute

Last modified: Thu, 07 Jul 11 08:48:38 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.