Author: Pete R.
Date: 14:39:15 06/12/00
Go up one level in this thread
On June 12, 2000 at 05:10:54, Peter McKenzie wrote:
>I watched following game on ICC this evening. The game was funny because I'd
>just been thinking that Chop (Beadle) sacs the exchange too often and was
>thinking of ways to fix this problem. When I saw Rxa4 come along in this game I
>though 'oh now, here we go again', but as events unfolded Chop whipped up a cool
>attack. These are the sort of games that keep me interested in this silly hobby
>of computer chess :-) I don't think you'll find the Rf8-f5-d5-d1 rook walk in
>too many text books.
>
>I don't know if giving up the exchange was sound (analysis welcome), but it
>certainly was entertaining. Hard luck to Amateur (& Will), I'm sure revenge
>will be swift :-)
>
>[Event "ICC 5 2"]
>[Site "Internet Chess Club"]
>[Date "2000.06.12"]
>[Round "-"]
>[White "Amateur"]
>[Black "Beadle"]
>[Result "0-1"]
>[ICCResult "White resigns"]
>[WhiteElo "2498"]
>[BlackElo "2508"]
>[Opening "Three knights: Steinitz variation"]
>[ECO "C46"]
>[NIC "KP.06"]
>[Time "04:21:45"]
>[TimeControl "300+2"]
>
>1. e4 e5 2. Nf3 Nc6 3. Nc3 g6 4. d4 exd4 5. Nxd4 Bg7 6. Nxc6 bxc6 7. Qf3 d6
>8. Bc4 Be6 9. Bxe6 fxe6 10. Bd2 Rb8 11. O-O-O Ne7 12. Na4 Rf8 13. Qe3 Be5
>14. g3 Qc8 15. Qe2 Qb7 16. b3 Qb5 17. c4 Qb7 18. h4 Bd4 19. Be3 Bxe3+ 20.
>Qxe3 Qa6 21. h5 g5 22. Qxg5 Rb4 23. Qe3 Rxa4 24. bxa4 Qxc4+ 25. Kb2 c5 26.
>e5 Nd5 27. Qd2 Qxa4 28. exd6 cxd6 29. Ka1 Rf5 30. Rde1 Kd7 31. Rb1 Nb4 32.
>Rb2 Rd5 33. Qe2 Kd8 34. f4 h6 35. Qe4 a5 36. Rhb1 Rd1 37. Qe2 Rxb1+ 38. Rxb1
>Nc2+ 39. Kb2 Na3 40. Rd1 Nb5 41. Qc2 Qa3+ 42. Ka1 Nd4 43. Qg6 Qc3+ 44. Kb1
>Nb5 45. a4 Qb3+ 46. Kc1 Qe3+ 47. Rd2 Nd4 48. Qf6+ Kd7 49. Qf7+ Kc6 50. Qe8+
>Kd5 51. Qa8+ Kc4 52. Qg2 Nb3+ 53. Kd1 Nxd2 54. Qxd2 Qxg3 55. Qxd6 Qd3+ 56.
>Qxd3+ Kxd3 {White resigns} 0-1
I think most programs will choose this move. Fritz 5.32 and Hiarcs both still
evaluate this trade as being better for white. Hard to say. What seems clear
to me is that 43. Qg6? is a game-losing blunder. Instead 43. Qd3! should win
for white. Whether or not black accepts the queen trade white will push the g
pawn next move, and the result will be that white's passed pawns on the kingside
will create problems for black before he can threaten with his own passers. In
the event of a queen exchange, in addition to the kindside pawn threat, the rook
will be too powerful for the knight in the endgame, and in this way the loss of
the rook in the original exchange will make itself felt. I.e. a knight + 2
pawns for a rook is materially even but in this sort of endgame the knight is
often hopelessly overtaxed. Of course this does not necessarily mean that the
original trade is bad, but both sides would have to consider whose passers will
become a threat sooner and play accordingly.
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