Author: Drexel,Michael
Date: 03:01:59 07/23/03
Go up one level in this thread
On July 23, 2003 at 05:13:39, Kurt Utzinger wrote:
>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.
Dont agree here because I saw nothing better for white than to open the position
with 8.exd5 exd5 and retreat the bishop to a2,e2 or f1. Everything seems to be
better for black. 7.Re1 was a less worse choice IMO.
Maybe, the opening
> line chosen by white is not to be recommended against a computer.
> Kurt
I agree. A better idea is probably to play 1.e4 c5 2.Nf3 and after 2...d6 or
2...Nc6
3.Bb5. These lines are known to be extremely solid.
Michael
>>
>>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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