Author: Kurt Utzinger
Date: 02:13:39 07/23/03
Go up one level in this thread
On July 23, 2003 at 04:26:38, Drexel,Michael wrote:
>On July 23, 2003 at 02:47:13, Kurt Utzinger wrote:
>
>>Below my commented game, a typical one to demonstrate the way humans may not
>>play vs a strong computer. Hernandez Guerrero is surely a strong player (2544
>>Elo) but in this game you would not for a moment think that he had the white
>>pieces. The human player followed a completely wrong strategy vs a computer and
>>was - as usual in such cases - punished by Chess Tiger 15 in a nice manner.
>>Kurt
>>
>>[Event "120'/40+60'/20+30'"]
>>[Site "Ajedrez"]
>>[Date "2003.07.21"]
>>[Round "6.4"]
>>[White "Hernandez Guerrero, Gilberto"]
>>[Black "Chess Tiger 15.0"]
>>[Result "0-1"]
>>[ECO "B23"]
>>[WhiteElo "2544"]
>>[Annotator "Utzinger,K"]
>>[PlyCount "80"]
>>[Source "lmi"]
>>
>>1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 e6 5. Nf3 Nf6 6. O-O a6 7. Re1 {
>>In my opinion an important inaccuracy. It was necessary to prevent b7-b5 with
>>7.a4}
>
>7.a4 allows the reply 7...d5! and black is fine. This move is possible here
>because a4 a6 is played. Therefore the sacrifice 8.exd5 exd5 9.Nxd5 is not
>correct because Bb5+ is not possible.
>7.Re1 is a recommendation of GM Tiviakov.
>Michael
Hi Michael
Correct, 7.a4 allows 7...d5 and black is fine, but white cannot
avoid d7-d5 anyway and for this reason it's surely not a bad idea
to prevent b7-b7 with gain of space for black. Maybe, the opening
line chosen by white is not to be recommended against a computer.
Kurt
>
>7... b5 8. Bf1 Bb7 9. d3 d5 10. exd5 Nxd5 {Black stands already slightly
>>better: more active pieces and prospects for a kingside attack.} 11. Ne4 {
>>That's a wrong decision in my opinion. White's pieces have no perspectives and
>>Black's d5-knight has a dominating place in the centre. Therefore the exchange
>>11.Nxd5 seems the only logical try for me.} 11... Be7 12. c3 {This weakens the
>>d3-pawn and such a move should in principle be avoided at all cost. On the
>>other hand, it is hard for White to find a good plan and to drive away the
>>strong placed knight looks natural. We have a situation here that White should
>>not have allowed to arrive at against a computer. It's very uncomfortable to
>>have the worse position after only 12 moves.} 12... Nxf3+ 13. Qxf3 O-O 14. Bd2
>>Qd7 15. Qg3 {Threatening Bd2-h6} 15... f5 16. Ng5 Rf6 17. Nf3 Bd6 18. Ne5 Qc7
>>19. f4 Rd8 {White has done his best but it's not enough. The situation is
>>still the same. White can do nothing concrete and must wait what the opponent
>>will do. It seldom happens that such positions can be held vs a strong
>>computer program.} 20. Rad1 Rh6 21. b3 {This only weakens the position further.
>>It was time to make waiting moves like Kg1-h1-g1 or Bd2-c1-d1 and just to see
>>if Black would find a plan to improve its position.} 21... Nf6 22. h3 {
>>Such moves - if not forced - are strictly forbidden vs computers as this one
>>only weakens White on its dark squares.} 22... Nd7 23. c4 {White plays a
>>desperate style: look at the backward d3-pawn and the hole at d4. Better was
>>of course 23.Qf2 and to follow a do nothing but do it well strategy.} 23... Be7
>>24. Nf3 Rg6 25. Qf2 Bd6 26. Nh4 {I would have 26.Ng5 given a trial with the
>>idea to attack e6 and to hope that Black will play h7-h6 when the rook would
>>no longer have the square h6.} 26... Rh6 27. Qg3 Rf8 28. Bc3 Rff6 {
>>A nice maneouvre probably overlooked by the human player.} 29. Be5 Nxe5 30.
>>fxe5 Be7 31. Re2 Rf8 32. Nf3 f4 33. Qf2 Rg6 {White is completely outplayed and
>>I can't see how it should be possible to save the game.} 34. cxb5 Rg3 {
>>Threatens Bxf3} 35. Re4 {Desperation, but it does not help} 35... axb5 36. Rxf4
>>Bxf3 37. Rxf8+ Kxf8 38. Rc1 Bh4 39. Qxc5+ Qxc5+ 40. Rxc5 Bd5 0-1
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