Author: Omid David Tabibi
Date: 19:44:16 07/21/03
Go up one level in this thread
On July 21, 2003 at 22:37:19, Sherry Washington wrote:
>On July 21, 2003 at 22:25:59, Omid David Tabibi wrote:
>
>>After Tiger accepted the rook sacrifice by 29... Bxa1 it reached the following
>>position:
>>
>>Ilya Smirin - Gambit Tiger
>>[D]r4k2/1p2q2p/1Q2bp1P/rP2p1p1/P2pP3/3P2P1/3N1PBK/b1R5 w - - 0 30
>>
>>I tested many programs, but none manage to find the winning variation for white,
>>nor do they even evaluate the position as favorable for white. Does any engine
>>manage to find the winning variation?
>>
>>The winning variation, as played in the game, is:
>>30. Rc7 Qd8 31. Bh3 g4 32. Bxg4 Bxg4 33. Qc5+ Ke8 34. Rxh7 +-
>
>
>By the Way i see no Anti-computer tactics in this game, it looks to me that
>Smririn played normal brilliant tactical chess vs the machine.
Yes, and if it wasn't for Tiger's 29... Bxa1 blunder, he was lost.
Take a look at the following game of Smirin against Shredder for a nice display
of anti-computer strategy:
[Event "Internet Challenge II"]
[Site "?"]
[Date "2002.04.15"]
[Round "?"]
[White "Smirin, Ilia"]
[Black "Deep Shredder"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "2702"]
[Annotator "André Schulz"]
[PlyCount "48"]
[EventDate "2002.??.??"]
1. c4 e5 2. Nc3 Nf6 3. g3 Bb4 (3... d5 $1 {
is better for computers because then an open position results} 4. cxd5 Nxd5 5.
Bg2 Nb6) 4. Bg2 O-O 5. e4 Bxc3 6. bxc3 d6 7. Ne2 Bg4 $2 (7... c6 8. d3 (8. d4
Nbd7) 8... d5) 8. f3 Be6 $2 ({Better is} 8... Bc8) 9. d3 {Smirin copies the
successful strategy of Loek van Wely in his game against Fritz6 during the
Dutch Championship 2000. The plan is to storm the kingside with the pawns:
f3-f4, g3-g4-g5. The bad moves with the light-squared bishop were also made by
Fritz.} 9... c5 $2 {Naturally Shredder suspects nothing and does not recognise
White's intentions. Other programs would also have problems here because
White's strategy is still infathomable for computers.} ({Much better is} 9...
c6 10. O-O d5 {and White will not be able to execute his plan so easily.}) 10.
O-O h6 $2 {
Black creates a target which makes the White attack even more devastating.} ({
Black is already in trouble, since his job is to mobilise the f-pawn and to
have the counterthrust f7-f5 ready in case White plays f3-f4. But now it is
unclear how Black can do this elegantly. Apart from that many programs have
trouble moving the f-pawn, which they consider to be a protection for the
casteled king.} 10... Qc7 11. f4 Ne8 12. f5) 11. h3 {a security move} (11. f4 {
is probably also possible.}) 11... a6 ({Better is} 11... Ne8 12. f4 f6 13. f5
Bf7 14. g4) 12. a4 ({Better immediately} 12. f4 b5 13. f5 Bd7 14. g4) 12... b6
$2 {Shredder still doesn't understand what is going on, because the
consequences (mate) are way beyond its horizon.} 13. f4 Nc6 14. f5 $16 Bd7 15.
g4 Qc7 $2 ({Better is} 15... Nh7) 16. Ng3 $18 Na5 17. h4 Nh7 18. g5 {
There is no more defence.} 18... hxg5 19. hxg5 Qb7 20. Be3 b5 21. axb5 axb5 22.
Qh5 bxc4 23. f6 Rfc8 24. fxg7 Bg4 1-0
The above game is reminiscent of my recent game against Junior 8. Lock the
center and launch a kingside pawn storm:
[Event "Blitz:10'"]
[Site "Tel-Aviv"]
[Date "????.??.??"]
[Round "?"]
[White "Junior 8"]
[Black "Omid David Tabibi"]
[Result "0-1"]
[PlyCount "110"]
[TimeControl "600"]
{32MB, Fritz8.ctg, CHESSPC
} 1. d4 {[%emt 0:00:00]} Nf6 {[%emt 0:00:00]} 2. c4
{[%emt 0:00:02]} g6 {[%emt 0:00:00]} 3. Nc3 {[%emt 0:00:02]} Bg7 {
[%emt 0:00:00]} 4. e4 {[%emt 0:00:00]} d6 {[%emt 0:00:03]} 5. Nf3 {
[%emt 0:00:00]} O-O {[%emt 0:00:01]} 6. Be2 {[%emt 0:00:00]} e5 {[%emt 0:00:01]
} 7. O-O {[%emt 0:00:00]} Nc6 {[%emt 0:00:01]} 8. d5 {[%emt 0:00:00]} Ne7 {
[%emt 0:00:01]} 9. Ne1 {[%emt 0:00:00]} Ne8 {[%emt 0:00:02]} 10. Be3 {
[%emt 0:00:00]} f5 {[%emt 0:00:01]} 11. f3 {[%emt 0:00:00]} f4 {[%emt 0:00:00]}
12. Bf2 {[%emt 0:00:00]} g5 {[%emt 0:00:01]} 13. c5 {[%emt 0:00:00]} Ng6 {
[%emt 0:00:09]} 14. a4 {[%emt 0:00:00]} Rf7 {[%emt 0:00:04]} 15. Nd3 {
[%emt 0:00:07]} Bf8 {[%emt 0:00:06]} 16. b4 {[%emt 0:00:16]} h5 {[%emt 0:00:00]
} 17. a5 {[%emt 0:00:36]} a6 {[%emt 0:00:00]} 18. Nb2 {[%emt 0:00:21]} Nf6 {
[%emt 0:00:11]} 19. Nc4 {[%emt 0:00:04]} g4 {[%emt 0:00:17]} 20. Qd2 {
[%emt 0:00:15]} Rg7 {[%emt 0:00:37]} 21. Rae1 {[%emt 0:00:16]} g3 {
[%emt 0:00:21]} 22. hxg3 {[%emt 0:00:17]} fxg3 {[%emt 0:00:01]} 23. Bxg3 {
[%emt 0:00:18]} h4 {[%emt 0:00:02]} 24. Bh2 {[%emt 0:00:15]} Nh5 {
[%emt 0:00:10]} 25. Rf2 {[%emt 0:00:21]} Ngf4 {[%emt 0:00:18]} 26. Bxf4 {
[%emt 0:00:21]} Nxf4 {[%emt 0:00:02]} 27. Qe3 {[%emt 0:00:08]} Qg5 {
[%emt 0:00:14]} 28. Kh1 {[%emt 0:00:10]} Qg3 {[%emt 0:00:14]} 29. Bf1 {
[%emt 0:00:13]} h3 {[%emt 0:00:10]} 30. Ree2 {[%emt 0:00:00]} hxg2+ {
[%emt 0:00:00]} 31. Rxg2 {[%emt 0:00:12]} Nxe2 {[%emt 0:00:48]} 32. Nxe2 {
[%emt 0:00:00]} Qe1 {[%emt 0:00:07]} 33. Qc1 {[%emt 0:00:21]} Qxc1 {
[%emt 0:00:05]} 34. Nxc1 {[%emt 0:00:10]} Rxg2 {[%emt 0:00:08]} 35. Kxg2 {
[%emt 0:00:12]} Bd7 {[%emt 0:00:10]} 36. cxd6 {[%emt 0:00:01]} cxd6 {
[%emt 0:00:01]} 37. Nb6 {[%emt 0:00:14]} Rd8 {[%emt 0:00:01]} 38. Nxd7 {
[%emt 0:00:28]} Rxd7 {[%emt 0:00:02]} 39. Nd3 {[%emt 0:00:08]} Bh6 {
[%emt 0:00:09]} 40. Kg3 {[%emt 0:00:02]} Rc7 {[%emt 0:00:03]} 41. Kh4 {
[%emt 0:00:03]} Be3 {[%emt 0:00:35]} 42. Kh5 {[%emt 0:00:20]} Kf7 {
[%emt 0:00:13]} 43. Kg4 {[%emt 0:00:10]} Kf6 {[%emt 0:00:11]} 44. Kh3 {
[%emt 0:00:00]} Kg5 {[%emt 0:00:07]} 45. Kg3 {[%emt 0:00:14]} Rc2 {
[%emt 0:00:12]} 46. f4+ {[%emt 0:00:00]} Bxf4+ {[%emt 0:00:00]} 47. Kf3 {
[%emt 0:00:10]} Bd2 {[%emt 0:00:05]} 48. Be2 {[%emt 0:00:04]} Rc3 {
[%emt 0:00:24]} 49. Kf2 {[%emt 0:00:06]} Rb3 {[%emt 0:00:02]} 50. Bf1 {
[%emt 0:00:08]} Bxb4 {[%emt 0:00:05]} 51. Nxb4 {[%emt 0:00:02]} Rxb4 {
[%emt 0:00:01]} 52. Bh3 {[%emt 0:00:04]} Ra4 {[%emt 0:00:04]} 53. Bc8 {
[%emt 0:00:07]} Rxa5 {[%emt 0:00:02]} 54. Bxb7 {[%emt 0:00:04]} Kf4 {
[%emt 0:00:04]} 55. Ke1 {[%emt 0:00:07]} Kxe4 {[%emt 0:00:00]} 0-1
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