Author: Chessfun
Date: 10:01:44 02/20/01
Go up one level in this thread
On February 20, 2001 at 08:19:09, Vincent Lejeune wrote:
>On February 19, 2001 at 19:48:05, Chessfun wrote:
>
>>
>>4rk2/4qp2/5n2/p3NBQp/2P1b3/1P4P1/P3K3/8
>>
>>This position is from my Valentine tourney from round 20
>>Gambit 1.0 v Shredder 5. Gambit choose the rep by 48. Qh6
>>instead of what Shredder expected and appears to be winning
>>48. Nd7+ Qxd7 49. Bxd7 Nxd7 50. Qxa5 Bg6+.
>>
>>After manually playing the moves Gambit sees white winning
>>but even to depth 18 will not play 48. Nd7+
>
>
>[d]4rk2/3n1p2/8/Q6p/2P1b3/1P4P1/P3K3/8 b - - 0 50
>
>
>Position from your line, before 50..Bg6+
>
>Here I would definitivenely consider 50..f5 to let the bishop on the diagonal
>where the 3 white pawns could advance
>(but f5,Bg6+,f6 or Ne5 are in same score range (+0.50 to +0.60) for hiarcs 7.32)
>
>
>Now the score of 2 engines in this position :
>
>Crafty 18.02 sees black better : -1.40 (50..f6)
>hiarcs 7.32 sees white better : +0.50 (50..f5 and later 50..f6)
>
>
>
>This position is very difficult to estimate "R+N+B+2p" against "Q+3 linked
>passed pawns+1p" and the 2 kings are active
>
>Here the help of a strong correspondance player who can analyse deeply would be
>interresting !
Actually what I found odd was Gambit sees the line the move before
as can be seen from it's PGN. 47.Re4 { Score: 0.20 depth: 14 Re4 Bxe4
Nd7+ Qxd7 Bxd7 Nxd7 Qxa5 Bf5+ Kd2 Bg4 a3 Re2+ Kc1 Ne5 Qd8+ Kg7 c5 Kh7 Qf8 }
And making the first few moves in the line which are pretty much forced isn't
very deep in terms of search depth 48. Nd7+ Qxd7 49. Bxd7 Nxd7 at this point it
sees white winning, yet still plays the rep instead at 48. You would think if it
sees the few moves ahead to the position after 49....Nxd7 which it evals as a +
for white it would have played 48. Nd7+.
Sarah.
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