Author: John Merlino
Date: 17:34:08 03/02/00
Go up one level in this thread
On March 02, 2000 at 10:11:50, Shep wrote:
>
>This is from a correspondence game I played last year.
>14...Nxf2 is the amazing novelty my opponent found.
>This position is going to be part of my upcoming Shep 2000 test suite
>to be released next month.
>
>1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. O-O Qc7 7. Qe2 d6 8. c4
>g6 9. Rd1 Bg7 10. Nf3 O-O 11. Nc3 Nbd7 12. Bc2 Ng4 13. Bf4 Nde5 14. Nd2 (14.
>Nd2 b5 15. h3 Nf6 16. cxb5 axb5 17. Bb3 b4 18. Nb5 Qb8 19. Nxd6 Nh5 20. Bxe5
>Bxe5 21. N2c4 Ba6 22. Qf3 {1-0 Cabrilo,G-Kovacevic,V/Vrnjacka Banja 1988 (33)})
>(14. Nxe5 Nxe5 15. Bb3 (15. Rac1 b6 16. b3 Rd8 17. Bb1 Rb8 18. Be3 Qe7 19. Na4
>Nd7 20. b4 b5 21. cxb5 axb5 22. Nc3 {
>1-0 Schaefer,M-Bluhm,G/BL2-W 8889 1989/BL2 (38)}) 15... b6 16. Rac1 Bb7 17. f3
>Rac8 18. Qd2 Rfd8 19. Bg5 Rd7 20. Qf2 h6 21. Be3 Nxc4 22. Na4 {
>1-0 Hawelko,M-Hulak,K/Berlijn open 1988 (39)}) 14... Nxf2 $3 $146 { Junior 6.
>0: 0:55, +0,35 Deep Junior 6.0a: 0:59, +0,32 Nimzo 7.32: 6:00, +0,40 Hiarcs
>7.32: 8:19, +0,06 Fritz 6.0a: >10:00 } 15. Qxf2 (15. Kxf2 Qb6+ 16. c5 Qxb2
>17. Nb3 (17. cxd6 Qxc3 18. Nb3 Bd7 {transposition}) 17... Qxc3 18. cxd6 Bd7 $19
>) 15... Ng4 16. Qe2 Qb6+ 17. Kf1 (17. c5 Qxb2 18. Rac1 Qxc3 19. Nb3 (19. cxd6
>e5 $19) (19. Bxd6 $4 Bd4+ $19) 19... dxc5 $17) 17... Qxb2 18. Bxd6 Qxc3 (18...
>Rd8 19. e5 Qxc2 20. Qxg4 Qxc3 $17) 19. Qxg4 {White resigns} 0-1
>
>Critical position:
>[D]r1b2rk1/1pq2pbp/p2pp1p1/4n3/2P1PBn1/2N5/PPBNQPPP/R2R2K1 b - - 0 14; bm Nxf2;
>id Shep 2000.01
>
>14...Nxf2!!
>
>The results from the programs I tested (PIII-550):
>
>Junior 6.0: 0:55, +0,35
>Deep Junior 6.0a: 0:59, +0,32
>Nimzo 7.32: 6:00, +0,40
>Hiarcs 7.32: 8:19, +0,06
>Fritz 6.0a: >10:00
>
>---
>Shep
Chessmaster 7000's eval is -0.20 (Black's favor) after 13:25 on a PII-400. Oddly
enough, it prefers 17.c5 instead of Kf1. The full line is:
14... Nxf2 15.Qxf2 Ng4 16.Qe2 Qb6+ 17.c5 Qxb2 18.Rac1 Qxc3 19.Nb3 e5 20.Bd2 Qb2
21.cxd6 Qxa2
After 1:28:32 however, the eval goes back to White's favor! Just over 192
million positions seen, and the eval is 0.14. There are only two differences in
the lines.
-- The order of White's 18th and 19th moves are reversed.
-- Black's 21st move is no longer Qxa2, but rather Be6. This is followed by
22.Nc5.
jm
p.s. The eval of the position at the end of the game was -0.66, so maybe your
resignation was premature?
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