Author: Robert Hyatt
Date: 12:01:34 01/04/03
Go up one level in this thread
On January 04, 2003 at 14:39:40, scott farrell wrote:
>This position occured in a game chompster vs dorky on ICC (45 10 time control
>practices for CCT5).
>
>[D]r3kb1r/pp1n1pp1/1qp1p2p/3n3P/2NP1B2/3Q2N1/PPP2PP1/R4RK1 b kq - 0 14
>
>My engine says NxB is slightly winning for black, it failed high big time at
>only depth 8 !!!
>sfarrellc(C) whispers: , D10/11(11): 0.29 : D5F4 , 25.176/48.0 secs
>
>Crafty says it is +3 winning for white.
>Dorky(C) whispers: score=+2.61 depth=13 Knps=111 cpu=99% time=87.05s
>
>Here is crafty's annotation:
>({9:+2.92} 14. ... Nxf4 15. Nxb6 Nxd3 16. Nxa8 Nxb2 17. Rab1 Ba3 18. Nc7+ Kd8
>19. Na8 +-)
>({9:+1.04} 14. ... Qd8 15. Bd2 N7b6 16. Ne5 Bd6 17. Rfe1 Qh4 18. Qe4 Qxe4 19.
>Rxe4 Bxe5 20. Rxe5 +/-)
>({9:+1.52} 14. ... Qb5 15. Bd6 Nb4 16. Qe2 Nb6 17. Bxf8 Kxf8 18. b3 Nxc4 19.
>bxc4 Qg5 +-)
>({9:+1.66} 14. ... Qa6 15. Nd6+ Bxd6 16. Qxa6 bxa6 17. Bxd6 N7f6 18. Rfe1 Rd8
>19. Bc5 Nf4 +-)
>({9:+2.03} 14. ... Qb4 15. Bd2 Qa4 16. Ne4 Qa6 17. Ncd6+ Bxd6 18. Nxd6+ Ke7 19.
>Nc4 Qb5 +-)
>
>
>NxB is a clear winner !!!! It was an easy win from there.
>
>How many other engines see this? It took 19 more moves to actually recover the
>material that my engine could see coming !!!!
Crafty thinks Qd8 and Nxf4 are different in score, but not +3. If I
let crafty think, it thinks black is better with a score of -.9 after Qd8.
If I play Nxf4, it thinks white is better with a score of +1.16 and would play
Nxb6 thru depth 14, which only takes 10 seconds or so to reach.
I haven't looked at it, but I am not sure that Nxf4 "is a clear winner"
If this is about the white knight getting stuck at a8, it _might_ be a
problem, but I doubt that any program will see it from the starting position.
I can't get the score you posted above so I don't know what is going on there.
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