Author: John Merlino
Date: 13:10:10 07/15/04
Go up one level in this thread
On July 15, 2004 at 10:31:12, Eduard Nemeth wrote:
>A hard endgame Position!
>
>First the game:
>
>[Event "14th Asian Cities"]
>[Site "?"]
>[Date "2004.??.??"]
>[Round "9"]
>[White "Ak Hadfizon, Pg Mo Omar"]
>[Black "Nolte, R."]
>[Result "0-1"]
>[ECO "B87"]
>[BlackElo "2385"]
>[PlyCount "86"]
>[EventDate "2004.??.??"]
>
>1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Nc3 cxd4 5. Nxd4 a6 6. Bc4 e6 7. Bb3 b5 8. a3
>Bb7 9. f3 Nbd7 10. Be3 Rc8 11. Qd2 Ne5 12. Bg5 h6 13. Bf4 Qb6 14. Be3 Qc7 15.
>Rd1 Nc4 16. Bxc4 Qxc4 17. Qd3 Be7 18. O-O O-O 19. Nb3 Qc7 20. Rf2 d5 21. exd5
>Nxd5 22. Nxd5 Bxd5 23. f4 Rfd8 24. Qf1 Bxb3 25. Rxd8+ Rxd8 26. cxb3 Bc5 27.
>Bxc5 Qxc5 28. Kh1 {Testposition: nun Qxf2! und das Bauernendspiel ist analog
>der Partie, leicht gewonnen.} Qxf2 $1 29. Qxf2 Rd1+ 30. Qg1 Rxg1+ 31. Kxg1 Kf8
>32. Kf2 Ke7 33. Ke3 Kd6 34. Kd4 f6 35. b4 e5+ 36. fxe5+ fxe5+ 37. Ke4 Ke6 38.
>g4 g6 39. h4 h5 40. gxh5 gxh5 41. b3 Kf6 42. a4 Ke6 43. a5 Kd6 0-1
>
>Ak Hadfizon,P - Nolte,R, 14th Asian Cities 2004
>
>[D]3r2k1/5pp1/p3p2p/1pq5/5P2/PP6/1P3RPP/5Q1K b - - 0 1
>
>Black played strong now Qxf2!
>
>Black can easy win the pawn b3, but with Queen or Rook it is not easy to win.
>After Qxf3 and fallows Rd1+ black win the pawn ending!
>
>Test it,
>
>Eduard
I think it is going to be VERY unlikely that engines will find this move.
First of all, 28...Rd3 is going to be preferred by engines because it will
easily win either the b2 or b3 pawn (AND very likely quickly trade off other
material as well). I think most engines will score Rd3 at about -1.5 for Black
(CM9_SKR scores it at -1.59).
Additionally, I think that engines will need to see up to at least depth 25 to
see that Qxf3 is better (or even just as good as) Rd3. With both queens and one
pair of rooks still on the board in the initial position, this could take a VERY
long time.
So, while Qxf3 certainly seems like it wins, chess engines are just not going to
find it in a game FOR THE RIGHT REASONS. I imagine that some engines might find
it because they evaluate the position as a draw and they have code in them to
trade off material in drawish positions.
Just surmising....
jm
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