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Subject: Re: A tough one?

Author: Uri Blass

Date: 14:08:45 04/05/03

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On April 05, 2003 at 15:48:48, Jim Monaghan wrote:

>Hi,
>
>This one is pretty difficult. The idea is to avoid the tempting 1.Rxe5 which
>seemingly wins a pawn, but in reality drops the exchange for a pawn. The main
>line of the combo runs 20 ply. One of the rare occasions where Lasker stumbled.
>Any engines "smart enough" to avoid the trap and understand why in reasonable
>time?

Not to understand the reason but to avoid the trap

It is clear that black  get some initiative for the pawn so latest movei does
not like to win the pawn(at least at depthes 11,12)

32740 <first :  10 47 2384 3713029 e1e5 d5e6 e5c5 d7d1 c3d1 f6d5 c2c4 b5c4 f1c4
g7e5 c5c8 b7c8
36910 <first :  10 47 2801 4312339 e1e5 d5e6 e5c5 d7d1 c3d1 f6d5 c2c4 b5c4 f1c4
g7e5 c5c8 b7c8
47790 <first :  11 -8 3889 6188334 e1e5 f6g4 e5d5 d7d5 f3g4 g7c3 d1d5 c3a5 d5d6
a5c7 d6f6 c7e5 f6b6
62450 <first : 11 -7 5355 8423516 a5b4
84530 <first :  11 -5 7563 11760818 a5b4 d5e6 d1d7 b7d7 f1d3 d7d4 b4e7 f6d7 a3a4
d4f2 g1f2 b5a4 d3a6 c8e8
98980 <first : 11 -4 9002 13935115 f1d3
130230 <first :  11 -5 12133 18215980 a5b4 d5e6 d1d7 b7d7 f1d3 d7d4 b4e7 f6d7
a3a4 d4f2 g1f2 b5a4 d3a6 c8e8
325550 <first :  11 -5 31665 47796419 a5b4 d5e6 d1d7 b7d7 f1d3 d7d4 b4e7 f6d7
a3a4 d4f2 g1f2 b5a4 d3a6 c8e8
387170 <first :  12 -6 37827 57069253 a5b4 d5e6 d1d7 b7d7 e1d1 f6d5 c3d5 e6d5
f2b6 d7e6 b6e6 f7e6 f1d3 g8f7
463410 <first : 12 -5 45451 69383123 f1d3
489220 <first :  12 -6 48032 73082517 a5b4 d5e6 d1d7 b7d7 e1d1 f6d5 c3d5 e6d5
f2b6 d7e6 b6e6 f7e6 f1d3 g8f7


Uri



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