Author: Albert Silver
Date: 06:34:57 11/07/04
Go up one level in this thread
On November 07, 2004 at 08:41:29, Albert Silver wrote:
>On November 07, 2004 at 05:23:27, Ed Schröder wrote:
>
>>Last night I played a game against my own brainchild, I sometimes still do that.
>>The game got interesting when I played a wild sacrifice which I couldn't oversee
>>till the end but as it seems is correct after all. It's my bet (in case the
>>sacrifice is correct) no engine will find this move.
>>
>>I want to find out if the sac is correct so I can label this game as my own
>>personal immortal game.
>>
>>Here is the game and the critical positions, please start your engines...
>>
>>[Event "Play for fun"]
>>[Site "Deventer"]
>>[Date "06.11.2004"]
>>[Round "?"]
>>[White "Ed"]
>>[Black "Rebel 12"]
>>[Result "1-0"]
>>[WhiteElo "?"]
>>[BlackElo "?"]
>>
>>1. d4 Nf6 2. f3 d5 3. Nc3 c6 4. e4 e6 5. e5 Nfd7 6. f4 Bb4 7. Nf3 O-O 8.
>>Bd3 c5 9. Ng5 g6 10. h4 cxd4 11. h5 dxc3 12. b3 Qc7 13. Nxh7 Nxe5 14. fxe5
>>Qxe5+ 15. Kf1 Kxh7 16. hxg6+ Kg8 17. g7 Qf6+ 18. Ke1 Qxg7 19. Bh7+ Kh8
>>20. Qh5 f5 21. Bg5 Nc6 22. Bxf5+ Kg8 23. Bh7+ Kh8 24. Be4+ Kg8 25. Bh6
>>Qg3+ 26. Kd1 dxe4 27. Bg5 Qd6+ 28. Kc1 Qd7 29. Bf6 Qd2+ 30. Kb1 Qe1+ 31.
>>Rxe1 Rxf6 32. Rh1 Kf8 33. Qh8+ Ke7 34. Rh7+ Rf7 35. a3 Bd6 36. Ka2 e5 37.
>>Rah1 Nd8 38. R1h6 Bf5 39. Qf6+ Ke8 40. Rh8+ Bf8 41. Qxe5+ Kd7 42. Rf6 Rxf6
>>43. Qxf6 Be6 44. Qxf8 *
>>
>>[d]rnbq1rk1/pp1n1p1p/4p1p1/3pP1N1/1b1p1P1P/2NB4/PPP3P1/R1BQK2R w KQ - bm h5;
>>
>>Position after 10..cxd4, move to find 11.h5!!
>>
>>[d]rnbq1rk1/pp1n1p1p/4p1p1/3pP1NP/1b3P2/1PpB4/P1P3P1/R1BQK2R b KQ - bm Qc7;
>>
>>12..Qc7 looks like a smart defence (see the game) but is it really the best
>>move? Else I think the rest is forced. I think this is the critical position.
>
>Deep Fritz 8 had huge fail-low (I presume) on the 12th ply, but so far prefers
>12...Nxe5 as shown here. I'll feed it the immediate follow-up and see what it
>says for white as the take seems more or less forced.
>
>New game
>rnbq1rk1/pp1n1p1p/4p1p1/3pP1NP/1b3P2/1PpB4/P1P3P1/R1BQK2R b KQ - 0 1
>
>Analysis by Deep Fritz 8:
>
>
>1...Nf6 2.exf6 Qxf6 3.hxg6 hxg6 4.Nh7 Qh8 5.Qg4
> -+ (-1.77) Depth: 9/42 00:00:08 7164kN
>1...Nf6--
> -+ (-1.49) Depth: 10/27 00:00:09 7479kN
>1...Nf6 2.exf6 Qxf6 3.hxg6 hxg6 4.Nh7 Qh8 5.Qg4 Re8 6.Bxg6 Qg7 7.Bf5 exf5+
> -+ (-1.44) Depth: 10/45 00:00:09 7842kN
>1...Nxe5!
> -+ (-1.44) Depth: 10/45 00:00:09 8233kN
>1...Nxe5!
> -+ (-1.60) Depth: 10/45 00:00:10 8441kN
>1...Nxe5 2.fxe5 Qc7 3.Nf3 Nc6 4.Qe2 Bc5 5.Bh6
> -+ (-1.65) Depth: 10/45 00:00:10 8641kN
>1...Nxe5 2.fxe5 Qc7 3.Nf3 Nc6 4.Qe2 f6 5.Bh6 Nxe5 6.Nxe5 Qxe5
> µ (-1.40) Depth: 11/35 00:00:13 11660kN
>1...Nxe5--
> µ (-1.12) Depth: 12/40 00:00:23 20506kN
>1...Nxe5 2.fxe5 Qc7 3.Qe2 f6 4.hxg6 hxg6 5.Nh7 Qxe5 6.Qxe5 fxe5 7.Nxf8 Bxf8
>8.Bxg6 Kg7 9.Bd3 Bc5
> ³ (-0.61) Depth: 12/61 00:12:45 1375760kN
>1...f5!
> ³ (-0.61) Depth: 12/61 00:13:13 1400955kN
>1...f5!
> µ (-0.77) Depth: 12/61 00:13:17 1404940kN
>1...f5 2.Nxe6 Qe7 3.Nxf8 Nxf8 4.hxg6 hxg6 5.a3 Bc5 6.Qf3 Nc6 7.Qxd5+
> µ (-0.78) Depth: 12/61 00:13:19 1406441kN
>1...f5--
> ³ (-0.50) Depth: 13/37 00:13:33 1419555kN
>1...f5 2.hxg6 Qe8 3.Rh6 hxg6 4.Qf3
> = (0.00) Depth: 13/46 00:13:42 1427209kN
>1...Nxe5!
> = (-0.01) Depth: 13/46 00:13:49 1432827kN
>1...Nxe5!
> = (-0.16) Depth: 13/46 00:13:52 1435211kN
>1...Nxe5!
> ³ (-0.47) Depth: 13/46 00:13:54 1437676kN
>1...Nxe5 2.fxe5 Qc7 3.Qe2 f6 4.hxg6 hxg6 5.Nh7 Qxe5 6.Qxe5 fxe5 7.Nxf8 Bxf8
>8.Bxg6 Kg7 9.Bd3 Bc5
> ³ (-0.61) Depth: 13/46 00:14:03 1444639kN
>1...Nxe5 2.fxe5 Qc7 3.Qe2 Nc6 4.Nxh7 Qxe5 5.Nxf8 Bxf8 6.hxg6 fxg6 7.Be3 Nb4 8.a3
> ³ (-0.34) Depth: 14/41 00:15:39 1530022kN
>1...Nxe5 2.fxe5 Qc7 3.Qe2 Nc6 4.Nxh7 Qxe5 5.Nxf8 Bxf8 6.hxg6 fxg6 7.Be3
> ³ (-0.41) Depth: 15/43 00:20:39 1791937kN
>1...Nxe5 2.fxe5 Qc7 3.Qe2 Nc6 4.Nxh7 Qxe5 5.Nxf8 Bxf8 6.hxg6 fxg6 7.Be3
> ³ (-0.37) Depth: 16/44 00:29:50 2257812kN
>
>(Silver, Private 07.11.2004)
Shredder 7.04 agrees with the mainline of DF8, but not on the evaluation. After
6.fxg6 in the mainline DF8 maintains that Black is a bit better with (-0.47)
after 30 minutes, and Shredder thinks white has a significant edge, around
(+0.85).
Albert
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