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Subject: An example of the flaw in promotions of Rybka

Author: Paulo Cesar Soares

Date: 20:27:36 02/26/06




[Event "PIV2.4 10'/40+10'/40+10'40"]
[Site "PIV2,4"]
[Date "2006.02.27"]
[Round "1"]
[White "Fritz 7"]
[Black "Rybka 1.01 Beta 13d 32-bit"]
[Result "0-1"]
[ECO "C45"]
[Annotator "Soares,Paulo"]
[PlyCount "39"]
[TimeControl "40/600:40/600:40/600"]

{W=11.6 ply; 840kN/s
B=11.1 ply; 46kN/s
} 1. e4 {
Both last book move [%eval 16,13] [%emt 0:00:15]} e5 {
[%eval 3,12] [%emt 0:00:19]} 2. Nf3 {(Nb1-c3) [%eval 16,12] [%emt 0:00:12]}
Nc6{(Ng8-f6) [%eval 5,12] [%emt 0:00:17]} 3. d4 {
(Nb1-c3) [%eval 25,11] [%emt 0:00:14]} exd4 {[%eval 10,11] [%emt 0:00:12]}
4.Nxd4 {[%eval 28,12] [%emt 0:00:21]} Bc5 {(Qd8-h4) [%eval 1,12] [%emt
0:00:28]}5. Nf5 {(Bc1-e3) [%eval 16,12] [%emt 0:00:33]} d5 {
(Qd8-f6) [%eval -28,11] [%emt 0:00:23]} 6. Nxg7+ {
(Nb1-c3) [%eval 38,11] [%emt 0:00:13]} Kf8 {[%eval -28,11] [%emt 0:00:11]} 7.Nh5
{[%eval 31,11] [%emt 0:00:17]} Qh4 {(Ng8-f6) [%eval -39,11] [%emt 0:00:19]}8.
Ng3 {[%eval 34,11] [%emt 0:00:18]} Nf6 {[%eval -41,10] [%emt 0:00:13]} 9.exd5
{(Bf1-e2) [%eval 16,10] [%emt 0:00:12]} Bg4 {[%eval -48,9] [%emt 0:00:10]}10.
Be2 {[%eval 19,11] [%emt 0:00:13]} Bxe2 {[%eval -46,9] [%emt 0:00:09]} 11.Qxe2
{(Ke1xe2) [%eval -3,11] [%emt 0:00:23]} Re8 {
[%eval -207,10] [%emt 0:00:10]} 12. Qxe8+ {[%eval -59,12] [%emt 0:00:15]}
Kxe8{[%eval -236,11] [%emt 0:00:13]} 13. dxc6 {[%eval -66,11] [%emt 0:00:10]}
Ng4 {(Nf6-e4) [%eval -274,10] [%emt 0:00:14]} 14. cxb7 {
(Rh1-f1) [%eval -150,11] [%emt 0:00:17]} Kd7 {[%eval -363,11] [%emt 0:00:39]}15.
Ne4 {[%eval -172,10] [%emt 0:00:10]} Re8 {[%eval -370,10] [%emt 0:00:09]}16. g3
{[%eval -259,10] [%emt 0:00:12]} Bxf2+ {[%eval -475,10] [%emt 0:00:18]}17. Kd2
{[%eval -291,10] [%emt 0:00:13]} Qh6+ {[%eval -502,10] [%emt 0:00:20]}18. Kd3
{(Kd2-d1) [%eval -375,11] [%emt 0:00:41]} Qa6+ {
(Qh6-b6) [%eval -581,8] [%emt 0:00:11]} 19. c4 {[%eval -387,11] [%emt
0:00:19]}Rxe4 {[%eval -696,10] [%emt 0:00:20]} 20. b8=N 1-0



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