Match Zappa vs Rybka (5) 1-0 (now 3,5-1,5) Download Games

[utzinger]

In the 5th game it was again Rybka to play too aggressively. Zappa
Mexico showed that this was wrong and won the game. It now stands
3,5-1,5 in this match. The games can be downloaded here:
http://www.utzingerk.com/rybka_zappa.pgn
Kind regards
Kurt

[Event "Rapid 60m+20s"]
[Site "Mexico"]
[Date "2007.09.23"]
[Round "5"]
[White "Zappa Mexico"]
[Black "Rybka"]
[Result "1-0"]
[ECO "B20"]
[PlyCount "257"]
[EventDate "2007.??.??"]
[Source "ChessBase"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. e5 dxe5 7. Nxe5 Qc8
8. Nc3 Nc6 9. Re1 Nxe5 10. Rxe5 e6 11. d3 Qc6 12. Re1 Be7 13. b3 O-O 14. Bb2
Rad8 15. Qe2 Nd7 16. Ne4 f5 17. Nd2 Bf6 18. Bxf6 Rxf6 19. Nf3 Qc7 20. Qd2 Nb8
21. Re3 Nc6 22. Rae1 Qd6 23. Qe2 Re8 24. Ng5 Rh6 25. h3 Nd4 26. Qd1 Qd8 27. Nf3
Nc6 28. Ne5 Qc7 29. Qc1 Rf6 30. Nxc6 Qxc6 31. Re5 Rg6 32. g3 Rh6 33. Kh2 b6 34.
Qe3 Rf6 35. Re2 Qd6 36. a4 h6 37. a5 g5 38. Qf3 Re7 39. Kg1 Kf8 40. Re1 Kg7 41.
axb6 axb6 42. Qa8 Rf8 43. Qa1 Rf6 44. R1e2 Kf7 45. Qa8 Qd7 46. Re1 Re8 47. Qf3
Kg7 48. Kf1 Qc8 49. Kg1 Qd7 50. Kf1 Qc8 51. Ra1 {Zappa avoids repetion of
moves with 51.Kf1, a good strategy in view of the fact that White has left 27
min time in comparison to 12 min for Rybka; nevertheless the position looks
still like a draw} Rf7 52. Kg1 Qd7 53. Rb1 Qd6 54. Rbe1 Ree7 55. Qa8 Rf8 56.
Qa6 Rd8 57. Qa1 Kg6 58. R1e2 Kf7 59. R2e3 {0} Rf8 60. Qa4 Kf6 61. Qa6 f4 {
an important decision with only 8m29s on the clock left} 62. gxf4 {
Zappa has still 24m on its clock} gxf4 63. Re2 Rg8+ 64. Kf1 Rg5 65. Qc4 Rf5 66.
Ke1 Qxe5 {oops, what a surprise: is Rybka playing for a loss?} 67. Rxe5 Rxe5+
68. Kf1 Kg5 69. Qa6 f3 70. Qxb6 Rf7 71. Qd8+ Kg6 72. Qg8+ Rg7 73. Qb8 Rf5 74.
d4 Kh5 75. Qe8+ Rg6 76. dxc5 Rxc5 77. c4 Rcg5 {
My Rybka shows the first time a negative evaluation of more than one pawn} 78.
Ke1 Re5+ 79. Kd2 {
For human players such complex positions are very (too) tricky} Re2+ 80. Kc3
Rxf2 81. Qf7 Rfg2 82. Qxf3+ Kh4 83. Kb4 R2g3 {0} 84. Qb7 h5 85. c5 {
My Rybka gives +-2.07 in favour of White} Rg7 86. Qb6 Re7 87. c6 Rgg7 88. Qe3
e5 89. Kc5 ({Rybka 2.3.2a mp 32-bit :} 89. Ka5 Rg3 90. Qe4+ Kxh3 91. Qf5+ Kg2
92. Qc2+ Kf3 93. c7 Rxc7 94. Qxc7 h4 95. Qc3+ Kf4 {[%eval 357,21]}) 89... e4
90. Kd6 Ref7 91. b4 Rg6+ 92. Ke5 Rg5+ 93. Ke6 {
My Zap!Chess Zanzibar shows an advantage of 4.70} Rfg7 94. Qxe4+ Kxh3 95. Kf6
Rg4 96. Qh1+ {My Zap!Chess Zanzibar announces mate in 40} Kg3 97. Qxh5 Rg8 98.
Qxg4+ Rxg4 99. b5 {The tablebases show an easy win for White} Rc4 100. Ke5 Rc5+
101. Kd6 Rxb5 102. c7 Rb6+ 103. Kd5 Rb5+ 104. Kd4 Rb4+ 105. Kc3 Rb1 106. Kc2
Rf1 107. c8=Q Rf3 108. Kd2 Kf4 109. Qc6 Rf2+ 110. Kd3 Kg5 111. Qc1+ Rf4 112.
Ke3 Rf6 113. Ke4+ Kg6 114. Qc3 Re6+ 115. Kd5 Re8 116. Qc6+ Kf7 117. Qd7+ Re7
118. Qf5+ Kg7 119. Kd6 Ra7 120. Qe5+ Kh7 121. Ke6 Ra2 122. Qc7+ Kg6 123. Qc4
Ra5 124. Qd3+ Kh5 125. Kf6 Kh4 126. Qc4+ Kh5 127. Qe2+ Kh4 128. Qe1+ Kg4 129.
Qxa5 1-0

[Uri Blass]

Note that rybka likes Qxe5 even after more than an hour so I do not see it as a surprised that rybka chose that move in the game.

Did you analyze alternatives to find that there is a better move?

Zappa Mexico - Rybka, Rapid 60m+20s 2007
[d]8/4r3/1p1qpk1p/2p1Rr2/2Q2p2/1P1P3P/2P1RP2/4K3 b - - 0 1

Analysis by Rybka 2.3.2a 32-bit :

66...Qd6xe5 67.Re2xe5 Rf5xe5+ 68.Ke1-f1
= (0.23) Depth: 5 00:00:00
66...b6-b5 67.Re5xf5+ e6xf5 68.Qc4-c3+ Kf6-g5
= (-0.18) Depth: 5 00:00:00
66...b6-b5 67.Re5xf5+ e6xf5 68.Qc4-c3+ Kf6-g5 69.Qc3-h8
= (-0.14) Depth: 6 00:00:00 7kN
66...b6-b5 67.Re5xf5+ e6xf5 68.Qc4-g8 Re7-a7 69.Ke1-d2
= (0.00) Depth: 7 00:00:00 14kN
66...b6-b5 67.Re5xf5+ e6xf5 68.Qc4-g8 Re7xe2+ 69.Ke1xe2 Qd6-c6 70.Qg8-d8+ Kf6-g6 71.Qd8-e7
= (0.22) Depth: 8 00:00:00 35kN
66...b6-b5 67.Re5xf5+ e6xf5 68.Qc4-g8 Re7-f7 69.Qg8-h8+ Kf6-g5 70.Qh8-e8 Qd6-d7
= (0.24) Depth: 9 00:00:01 62kN
66...b6-b5 67.Re5xf5+ e6xf5 68.Qc4-g8 Re7-f7 69.Qg8-h8+ Kf6-g5 70.Qh8-e8 Qd6-d7 71.Qe8-e5
= (0.24) Depth: 10 00:00:01 76kN
66...b6-b5 67.Re5xf5+ e6xf5 68.Qc4-g8 Re7-f7 69.Qg8-h8+ Kf6-g5 70.Qh8-e8 Qd6-d7 71.Qe8-e5 Qd7-d4
= (0.24) Depth: 11 00:00:01 101kN
66...b6-b5 67.Re5xf5+ e6xf5 68.Qc4-g8 Re7-f7 69.Qg8-h8+ Kf6-g5 70.Qh8-e8 Qd6-d7 71.Qe8-e5 Qd7-d4 72.Re2-e4
= (0.25) Depth: 12 00:00:02 139kN
66...b6-b5 67.Re5xf5+ e6xf5 68.Qc4-g8 Re7-f7 69.h3-h4 Qd6-f8 70.Qg8-g2 Qf8-d6 71.Qg2-a8 Kf6-g7 72.Qa8-e8
² (0.31) Depth: 13 00:00:04 299kN
66...b6-b5 67.Re5xf5+ e6xf5 68.Qc4-g8 Re7-f7 69.h3-h4 Qd6-f8 70.Qg8-g2 Qf8-d6 71.Qg2-a8 b5-b4 72.Ke1-d2 Rf7-g7
² (0.34) Depth: 14 00:00:07 459kN
66...b6-b5 67.Re5xf5+ e6xf5 68.Qc4-g8 Re7-f7 69.h3-h4 Qd6-f8 70.Qg8-g2 Qf8-d6 71.Qg2-a8 b5-b4 72.f2-f3 Rf7-h7 73.Qa8-a1+
² (0.36) Depth: 15 00:00:12 693kN
66...b6-b5 67.Re5xf5+ e6xf5 68.Qc4-g8 Re7-f7 69.h3-h4 Qd6-f8 70.Qg8-g2 Qf8-d6 71.Qg2-a8 b5-b4 72.f2-f3 Rf7-h7 73.Qa8-a1+
² (0.36) Depth: 16 00:00:17 1037kN
66...b6-b5 67.Re5xf5+ e6xf5 68.Qc4-g8 Re7-f7 69.Qg8-h8+ Kf6-g5 70.Qh8-e8 Qd6-d7 71.Qe8-e5 Qd7-d4 72.Re2-e4 Qd4xe5 73.Re4xe5
² (0.49) Depth: 17 00:01:07 4410kN
66...Qd6xe5 67.Re2xe5 Rf5xe5+ 68.Ke1-f1 Re5-f5 69.Qc4-a6 f4-f3 70.Qa6xb6 Re7-e8 71.Qb6-c6 Re8-g8 72.Qc6-e4 h6-h5 73.Qe4-h4+
² (0.44) Depth: 17 00:01:26 6113kN
66...Qd6xe5 67.Re2xe5 Rf5xe5+ 68.Ke1-f1 Re5-f5 69.Qc4-a6 f4-f3 70.Qa6xb6 Re7-e8 71.Qb6-c6 Re8-g8 72.Qc6-e4 h6-h5 73.Qe4-a4
² (0.41) Depth: 18 00:01:37 6835kN
66...Qd6xe5 67.Re2xe5 Rf5xe5+ 68.Ke1-f1 Re5-f5 69.Qc4-a6 f4-f3 70.Qa6xb6 Re7-e8 71.Qb6-c6 Re8-g8 72.Qc6-e4 h6-h5 73.Qe4-a4
² (0.41) Depth: 19 00:01:58 8378kN
66...Qd6xe5 67.Re2xe5 Rf5xe5+ 68.Ke1-d2 Kf6-g5 69.Qc4-a4 Re7-f7 70.Qa4-a8 Rf7-f5 71.Qa8-g8+ Kg5-f6 72.Qg8-d8+ Kf6-g6 73.Qd8xb6
² (0.47) Depth: 20 00:04:40 21050kN
66...Qd6xe5 67.Re2xe5 Rf5xe5+ 68.Ke1-d2 Kf6-g5 69.Qc4-a4 Re7-f7 70.Qa4-a8 Rf7-f5 71.Qa8-g8+ Kg5-f6 72.Qg8-d8+ Kf6-g6 73.Qd8xb6
² (0.45) Depth: 21 00:05:40 25073kN
66...Qd6xe5 67.Re2xe5 Rf5xe5+ 68.Ke1-f1 Kf6-g7 69.Qc4-c3 Kg7-f6 70.d3-d4 c5xd4 71.Qc3xd4 f4-f3 72.Qd4-c3 Re7-d7 73.Qc3xf3+
² (0.40) Depth: 22 00:10:00 45707kN
66...Qd6xe5 67.Re2xe5 Rf5xe5+ 68.Ke1-f1 Kf6-g7 69.Qc4xf4 Re5-f5 70.Qf4-g3+ Kg7-h7 71.d3-d4 Re7-f7 72.d4xc5 Rf5-f3 73.Qg3-g2
² (0.34) Depth: 23 00:16:03 69852kN
66...Qd6xe5 67.Re2xe5 Rf5xe5+ 68.Ke1-f1 Kf6-g7 69.Qc4xf4 Re5-f5 70.Qf4-g3+ Kg7-h7 71.d3-d4 Re7-f7 72.d4xc5 Rf5-f3 73.Qg3-g2
² (0.34) Depth: 24 00:21:04 91087kN
66...Qd6xe5 67.Re2xe5 Rf5xe5+ 68.Ke1-f1 Kf6-g7 69.Qc4xf4 Re5-f5 70.Qf4-g3+ Kg7-h7 71.d3-d4 Re7-f7 72.d4xc5 Rf5-f3 73.Qg3-g2
² (0.34) Depth: 25 00:31:08 134518kN, tb=1
66...Qd6xe5 67.Re2xe5 Rf5xe5+ 68.Ke1-f1 Kf6-g7 69.Qc4xf4 Re5-f5 70.Qf4-g3+ Kg7-h7 71.d3-d4 Re7-f7 72.d4xc5 b6xc5 73.Kf1-e2
² (0.32) Depth: 26 01:09:48 319920kN, tb=9

(, 24.09.2007)

[Ovyron]

After winning three games in a row, is it good to say that Zappa Mexico is the obvious choice for 8 core CPU owners? Or has it just been lucky?

[utzinger]

Note that rybka likes Qxe5 even after more than an hour so I do not see it as a surprised that rybka chose that move in the game.

Did you analyze alternatives to find that there is a better move?

Zappa Mexico - Rybka, Rapid 60m+20s 2007
[d]8/4r3/1p1qpk1p/2p1Rr2/2Q2p2/1P1P3P/2P1RP2/4K3 b - - 0 1

Hi Uri
You are right: there seems to be no good alternative
to Rybka's 66...Qxe5.
Kurt

[pichy]

Kurt , thanks for the PGN game, Zappa Mexico is available for $60.00 at

http://www.shredderchess.com/chess-prog ... exico.html

[utzinger]

Kurt , thanks for the PGN game, Zappa Mexico is available for $60.00 at

http://www.shredderchess.com/chess-prog ... exico.html

Hi Jorge
I have Zappa!Chess Zanzibar and see at the moment
no reason for purchasing Zappa Mexico. Who says that
this program is sensible stronger?
Kurt

[geots]

Kurt , thanks for the PGN game, Zappa Mexico is available for $60.00 at

http://www.shredderchess.com/chess-prog ... exico.html

Jorge, did you just come out of a coma?

Day Late and A Dollar Short Regards,

[pichy]

Kurt , thanks for the PGN game, Zappa Mexico is available for $60.00 at

http://www.shredderchess.com/chess-prog ... exico.html

Jorge, did you just come out of a coma?

Day Late and A Dollar Short Regards,

I was Hibernating for a long time, since I did NOT know that Zappa was that strong