Houdini 3 vs Cluster Rybka Game 6 ...

[Lavir]

How many tablebase pieces the cluster has? I guess 6, right?

For an human this would be very difficult to win. Now, with 6 pieces tablebases I guess Rybka will win without problems.

[Rebel]

I don't think every KRRKRP position wins.

Edit, I could be wrong

[Rebel]

Thanks Ingo (and others) for making this match possible. Enjoyed it a lot. Congrats to Robert for some impressive games.

[IWB]

Last game:

[Event "105m+15s, unrated"]
[Site "Engine Room"]
[Date "2012.12.18"]
[Round "?"]
[White "Felix 2, Houdini 3 Pro x64"]
[Black "TryMe, Rybka Cluster 64 Cor"]
[Result "0-1"]
[PlyCount "201"]
[EventDate "2012.12.18"]
[TimeControl "6300+15"]

1. e4 c6 2. d4 d5 3. Nc3 {0.34/28 249} dxe4 {0.21/23 216} 4. Nxe4 {0.33/29 0}
Nf6 {0.21/23 186 (Lf5)} 5. Nxf6+ {0.32/29 284} exf6 {0.21/24 0} 6. Nf3 {0.34/
29 154} Na6 {0.19/23 28} 7. a3 {0.34/29 122} Nc7 {0.17/24 60} 8. Bd3 {0.30/29
73} Qe7+ {0.16/24 250} 9. Be2 {0.31/31 0} Bf5 {0.18/25 261} 10. O-O {0.29/30 40
} Qd7 {0.16/25 128} 11. Nh4 {0.34/30 180 (c4)} Be6 {0.16/23 166} 12. c4 {0.28/
29 0} b5 {0.16/22 281 (Ld6)} 13. Re1 {0.27/27 197 (Lf4)} bxc4 {0.05/22 281
(Le7)} 14. Bxc4 {0.28/27 118} g6 {0.04/23 9} 15. Bd2 {0.16/28 564} Be7 {0.03/
24 0} 16. Rc1 {0.16/27 120 (Lxe6)} O-O {-0.01/22 229} 17. Nf3 {0.13/28 75} a5 {
-0.03/22 183 (Tfc8)} 18. Bf4 {0.04/25 142 (Dc2)} Bd6 {-0.15/23 370} 19. Bxe6 {
0.03/28 0} Nxe6 {-0.16/20 31} 20. Be3 {0.00/28 88 (Ld2)} Rfb8 {-0.13/21 269
(Tfc8)} 21. Qc2 {0.00/28 213} Ra6 {-0.14/23 1 (Tc8)} 22. Qe2 {0.05/26 134 (Dc4)
} Qb7 {-0.19/23 186 (Taa8)} 23. Rc2 {-0.04/28 250 (g3)} Rd8 {-0.19/23 338 (Lf8)
} 24. h3 {-0.06/26 88} Be7 {-0.20/22 47 (Lf8)} 25. h4 {-0.04/25 116 (Dd2)} Rd7
{-0.26/24 331 (Td5)} 26. Rc4 {-0.07/26 98 (Dd1)} Rb6 {-0.29/23 190} 27. Bc1 {
-0.11/30 0} Rd5 {-0.28/23 143} 28. Qd2 {-0.11/29 188 (Dc2)} Bd6 {-0.29/23 237
(Lf8)} 29. Qc2 {-0.19/25 141} Kg7 {-0.29/22 0} 30. Re4 {-0.23/24 104 (Te2)}
Rdb5 {-0.34/22 231} 31. Qd1 {-0.21/26 0 (Te1)} Bb8 {-0.43/24 269 (Th5)} 32. Qd2
{-0.26/25 82} Qd7 {-0.40/20 0 (Td5)} 33. Qc2 {-0.29/26 204 (Dh6+)} Qd5 {-0.46/
24 131} 34. Qe2 {-0.36/27 0 (Te3)} h6 {-0.68/21 127 (Lc7)} 35. Rc3 {-0.54/25
164 (Te3)} g5 {-0.91/21 121} 36. g3 {-0.81/27 326 (De1)} f5 {-1.15/22 180} 37.
Rxe6 {-0.59/29 0} Qxe6 {-1.16/22 11} 38. Qxe6 {-0.71/30 137} fxe6 {-1.08/25 0}
39. hxg5 {-0.57/29 0} hxg5 {-1.06/25 15} 40. Nxg5 {-0.57/30 53} Kf6 {-1.08/25
39} 41. Rc4 {-0.62/30 57} Rb3 {-1.08/25 32 (Ld6)} 42. Kg2 {-0.49/30 67} e5 {-1.
07/24 0} 43. Nf3 {-0.51/30 55} e4 {-1.07/25 0} 44. Ng1 {-0.48/31 98} Rd3 {-1.
11/27 56 (Ke6)} 45. Ne2 {-0.53/31 55} Ke6 {-1.08/25 0} 46. Rc5 {-0.55/30 53}
Ra6 {-1.08/26 35} 47. Rc4 {-0.52/30 37} Rb3 {-1.08/26 14} 48. Nc3 {-0.56/28 53
(Tc2)} Bd6 {-1.08/25 78} 49. Kf1 {-0.55/30 0} Ra8 {-1.16/23 58} 50. Na4 {-0.55/
29 4} Rh8 {-1.21/22 52 (Kd7)} 51. Be3 {-0.61/28 59} Kf7 {-1.33/22 17 (Kd7)} 52.
Rxc6 {-0.55/27 51} Bxg3 {-1.45/23 0} 53. Rc5 {-0.99/30 213} f4 {-1.69/26 0} 54.
Bxf4 {-0.99/28 1} Bxf4 {-1.69/26 7} 55. Rf5+ {-0.99/28 4} Ke6 {-1.67/26 7} 56.
Rxf4 {-0.99/28 0} Kd5 {-1.72/27 8} 57. Ke2 {-0.97/31 45 (Sc3+)} Kxd4 {-1.86/25
37} 58. Rf7 {-0.94/31 25} Rh2 {-2.24/24 23 (Th5)} 59. Rd7+ {-1.87/27 45} Kc4 {
-2.11/23 0} 60. Re7 {-2.01/29 103} Rbh3 {-2.53/25 0} 61. Rxe4+ {-1.86/29 61}
Kb3 {-2.58/24 0} 62. Nc5+ {-1.97/30 107 (Sb6)} Kxb2 {-2.55/24 12} 63. a4 {-2.
10/27 31} Kc3 {-2.51/24 24} 64. Re8 {-2.22/29 25 (Se6)} Kb4 {-2.78/23 53} 65.
Nd3+ {-2.30/28 0 (Sb7)} Kxa4 {-2.81/22 5} 66. Rb8 {-2.42/30 53} Rh4 {-2.98/25
0 (Ka3)} 67. Kd2 {-3.12/30 222} R2h3 {-3.30/25 0} 68. Rf8 {-3.07/28 37 (Tc8)}
Rd4 {-3.76/23 71 (Kb3)} 69. f3 {-2.94/25 14} Rh5 {-3.68/23 16 (Thh4)} 70. Kc3 {
-3.12/29 51} Rhd5 {-3.81/24 0} 71. Nb2+ {-3.21/29 34} Kb5 {-3.90/25 0} 72. Rb8+
{-3.23/30 35} Kc6 {-3.96/26 0} 73. Rc8+ {-3.31/29 48} Kd7 {-4.04/27 0} 74. Rf8
{-3.73/31 166} Rb4 {-4.38/26 0 (Ke7)} 75. Nd3 {-3.36/29 38} Ra4 {-4.21/22 0}
76. Kb3 {-3.37/29 31 (Sf4)} Rad4 {-4.24/23 14} 77. Nf2 {-3.43/31 20} a4+ {-4.
50/26 16} 78. Kc3 {-5.40/30 144} Kc7 {-7.45/27 59} 79. Ne4 {-6.34/29 75} a3 {
-7.46/25 63} 80. Ra8 {-6.34/32 0} Rd3+ {-5.11/15 2} 81. Kc2 {-6.52/32 28} Kb7 {
-12.55/22 0} 82. Ra4 {-8.77/32 122} R5d4 {-24.25/25 0} 83. Ra5 {-8.79/31 74}
Kb6 {-32.02/26 0} 84. Ra8 {-10.20/28 45} Rd8 {-61.24/26 0} 85. Ra4 {-11.82/31
46} Kb5 {-62.63/26 0} 86. Ra7 {-7.47/28 38} Kb4 {-60.64/27 103} 87. Rb7+ {-13.
80/27 0} Kc4 {-23.29/26 1} 88. Ra7 {-13.80/22 9 (f4)} Rc8 {-#18/24 351 (Te3)}
89. Kb1 {-13.79/28 24} Rb8+ {-#16/26 171 (Th8)} 90. Kc1 {-10.99/26 23 (Ka1)}
Kd4 {-#17/24 182 (Kb4)} 91. Rd7+ {-12.22/29 73} Ke3 {-#16/26 0} 92. Re7 {-12.
22/25 7} Rc8+ {-#15/29 83 (Kxf3)} 93. Kb1 {-19.95/27 10} Kxf3 {-#15/29 75} 94.
Ng5+ {-#22/35 0} Kf4 {-77.98/20 1} 95. Ne6+ {-#19/34 20} Kf5 {-#13/28 61} 96.
Ng7+ {-#19/34 23} Kg6 {-#13/29 55} 97. Re6+ {-#17/33 0 (Te8)} Kxg7 {-#12/32 135
} 98. Re2 {-#15/39 0} Kg6 {-#11/32 94 (Kf6)} 99. Rf2 {-#15/38 89 (Th2)} Kg5 {
-#11/37 108 (Tcd8)} 100. Ka1 {-#14/36 28 (Ka2)} Kh4 {-#10/39 69 (Kg4)} 101. Rg2
{-#13/36 6 (Te2) Felix 2,Houdini 3 Pro x64 gibt auf (Lag: Av=0.24s, max=0.8s)}
0-1

Time was very close for Rybka and it might have lost on time but the game was a 100% win for sure!

4.5 to 1.5 for Houdini, just one draw out of 6. That was impressive overall!

Thanks for your interest and thanks to all sponsors who made this possible.
Ingo

[carldaman]

Hi Ingo,
how could Rybka have lost on time, while having a 15s increment?
Was there internet lag?

Regards,
CL

[IanO]

Thanks for presenting the closest we are going to see to a World Championship this year.

[Nay Lin Tun]

Houdini should respond with 13. b3! to keep the strong centre pawns!!. Re1 ? is the loosing move by Houdini!!

[M ANSARI]

I think this has more to do with Houdini underestimating some endgames a pawn down (especially rook endgames) than anything. I don't think the exchange sac was forced, but it went for it thinking it could draw the ending. I really think it would have been almost impossible for a human to win with black against a computer, the defensive resources that Houdini put up are pretty amazing! But Rybka played perfect endgame (against human different story). Good performance by Rybka, it really played strong in the middle game and totally outplayed H3. Actually Rybka play was very strong in the middle game all through the match, it is just that it plays some inexplicably horrible moves in the opening that puts it in trouble all through the game. I think if this was a WCCM with opening books cooked by both parties, the Rybka Cluster would not look so bad. As it is, one thing is clear, Rybka does not have code to play the opening phase of the game, and needs a new code base fast!

[michiguel]

[quote="Nay Lin Tun"]Houdini should respond with 13. b3! to keep the strong centre pawns!!. Re1 ? is the loosing move by Houdini!![/quote

Absolutely correct. That was a Houdini positional blunder (quite ugly, but it was not mentioned). From that point on, it was a slippery slope.

Miguel

[Modern Times]

Time was very close for Rybka and it might have lost on time...

Of course not, not with a 15 second increment.