Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Can any program avoid this move?

Author: Ryan B.

Date: 16:08:30 11/16/05

Go up one level in this thread


On November 16, 2005 at 18:01:05, Joachim Rang wrote:

>On November 16, 2005 at 17:55:41, Ryan B. wrote:
>
>>On November 16, 2005 at 17:04:23, Joachim Rang wrote:
>>
>>>Hi,
>>>
>>>In my tuning for Fruit I stumbled over the following game when a very promising
>>>looking sacrifice does seem to loose the game. After that white can compromise
>>>blacks king side completely but seems unable to proceed the attack and loose
>>>afterwards. I have analyzed this and it does indeed seem the game continuation
>>>is rather forced and leads to a inferior position of white:
>>>
>>>rqrb2k1/5pp1/2b2P1p/p2n1n1P/1p2N3/1N2BB2/PPP2Q2/1K1R3R w - - 0 27
>>>
>>>am Bxh6?!
>>>
>>>The whole game:
>>>
>>>[Event "His-random"]
>>>[Site "computer"]
>>>[Date "2005.11.16"]
>>>[Round "4"]
>>>[White "Fruit 051028 [1-1-40-2/1-1-70-"]
>>>[Black "Fruit 051024jr [1-40-2/1-70-1]"]
>>>[Result "0-1"]
>>>[ECO "B66"]
>>>[PlyCount "115"]
>>>[EventDate "2005.??.??"]
>>>[TimeControl "240+2"]
>>>
>>>{D:\Dateien\ChessBase\Books\noomenalle.pgn 2/80 (Noomen 05-Sizilianisch (2), ?,
>>>1998, *)} 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2
>>>a6 8. O-O-O h6 9. Be3 Be7 10. f4 O-O {-0.32/13 12} 11. Be2 {+0.25/12 6} Bd7 {
>>>-0.20/13 13} 12. Kb1 {+0.23/12 7} Qc7 {-0.21/12 6} 13. h4 {+0.22/12 11} Rfc8 {
>>>-0.12/12 13} 14. Nb3 {+0.12/13 13} b5 {-0.02/13 7} 15. Bf3 {+0.13/13 14} b4 {
>>>+0.25/12 5} 16. Na4 {-0.38/12 10} Rcb8 {-0.50/13 12} 17. Qf2 {+0.37/13 10} Bd8
>>>{-0.44/13 7} 18. g4 {+0.42/13 9} Ne7 {-0.62/13 13} 19. e5 {+0.59/12 9} Nfd5 {
>>>-0.59/13 8} 20. exd6 {+0.43/12 9} Qxd6 {-0.56/12 3} 21. Nac5 {+0.30/13 10} Bc6
>>>{-0.56/11 9} 22. h5 {+0.30/12 13} Rc8 {-0.31/11 8} 23. f5 {+0.30/11 12} exf5 {
>>>-0.50/12 5} 24. gxf5 {+0.31/11 7} a5 {-0.49/11 6} 25. Ne4 {+0.38/10 5} Qb8 {
>>>-0.31/11 5} 26. f6 {+0.27/11 9} Nf5 {-0.31/12 8} 27. Bxh6 {+0.63/10 7} Nxh6 {
>>>+0.29/10 9} 28. Qg2 {+0.75/12 6} Nf5 {-0.38/13 24} 29. h6 {+1.02/12 16} g6 {
>>>-0.95/13 33} 30. h7+ {+1.41/12 7} Kh8 {-0.90/13 4} 31. Ng5 {+0.23/14 51} Ra7 {
>>>-0.23/13 12} 32. Bxd5 {-0.01/13 19} Bxf6 {-0.23/12 4} 33. Bxc6 {-0.17/12 4} Qe5
>>>{+0.31/12 2} 34. Nd4 {+0.41/11 2} Nxd4 {+0.58/12 4} 35. Bb7 {-0.42/12 4} Rf8 {
>>>+0.36/12 3} 36. Ne4 {-1.17/13 12} Bg7 {+1.01/13 11} 37. Nf2 {-1.29/12 5} Nf5 {
>>>+1.22/12 2} 38. Nd3 {-1.31/13 2} Qc7 {+1.40/13 2} 39. Bf3 {-1.50/13 4} Ne3 {
>>>+1.54/13 4} 40. Qe2 {-1.51/12 2} Nxd1 {+1.70/12 3} 41. Qxd1 {-1.75/11 1} Qc4 {
>>>+1.61/12 4} 42. Rh2 {-1.56/10 2} a4 {+1.86/12 3} 43. Qg1 {-2.13/11 3} Bd4 {
>>>+2.14/12 3} 44. Rh4 {-2.14/12 3} Qxd3 {+2.70/13 3} 45. Qxd4+ {-2.70/13 1} Qxd4
>>>{+2.65/14 1} 46. Rxd4 {-2.80/14 2} Rb8 {+2.69/14 3} 47. Rd3 {-2.80/13 2} Kxh7 {
>>>+2.86/14 1} 48. a3 {-2.90/13 1} bxa3 {+2.97/13 3} 49. Rxa3 {-3.10/12} f5 {
>>>+3.18/14 3} 50. Bc6 {-3.22/13 1} g5 {+3.45/14 3} 51. c4 {-3.51/13 3} f4 {
>>>+3.55/13 1} 52. Bf3 {-3.42/13 3} Rb3 {+3.91/15 2} 53. Rxb3 {-3.99/14 2} axb3 {
>>>+4.43/15} 54. Kc1 {-4.79/16 2} Kg6 {+5.13/17 3} 55. Bd1 {-5.13/16 2} Kf5 {
>>>+6.13/17 2} 56. Bxb3 {-6.18/16 3} g4 {+6.13/15 3} 57. Bd1 {-6.59/14 2} f3 {
>>>+12.85/15 2} 58. Kd2 {-13.26/14 1  0-1 Arena Adjudication} 0-1
>>>
>>>
>>>
>>>Joachim
>>
>>I have not analyzed this in depth yet but I suspect white can draw with sharp
>>play after the dubious sacrifice.
>>
>>Ryan
>
>
>I doubt it very much. Until move 34 all white moves seem forced to me and I
>don't see how white can hold the position after the 33rd move. Perhaps you can
>give some (preliminary) variations?
>
>Joachim

I thought there my be something in 34. c4 but it looks to just lead slightly to
a slower death for white.

2r4k/r4p1P/2B3p1/4q1b1/ppP5/1N2nQ2/PP6/1K1RR3 w - - 0 37

I also looked at 34. c3 Ne3 35. Qe4 bxc3 36. Rd7 c2+ 37. Qxc2 Bxg5 38. Qc3 also
a loss for white.

Even though I would not have played 26. Bxh6 myself it looks like my initial
reaction to the position was wrong, it happens.  Maybe a good test position.

Ryan




This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

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