Houdini 3 vs ClusterRybka Game 4 ...

[Leto]

[Event "105m+15s, unrated"]
[Site "Engine Room"]
[Date "2012.12.05"]
[Round "?"]
[White "Felix 2, Houdini 3 Pro x64"]
[Black "TryMe, Rybka Cluster 64 Cor"]
[Result "*"]
[ECO "B33"]
[PlyCount "79"]
[EventDate "2012.??.??"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. N1c3 Nf6 7. Bg5 a6 8.
Na3 Be6 9. Nc4 Rc8 10. Bxf6 Qxf6 11. Nb6 Rb8 12. Ncd5 Qg6 13. Qd3 Be7 14. Nc7+
Kd8 15. Ncd5 f5 16. Qc3 fxe4 17. O-O-O Bxd5 18. Nxd5 Rc8 19. Kb1 Rf8 20. Qb3 b5
21. Qa3 Qg4 22. f3 exf3 23. Nxe7 Kxe7 24. Qxd6+ Kf7 25. gxf3 Qf5 26. Qd5+ Kf6
27. Bd3 Qe6 28. Qe4 g6 29. h4 Rcd8 30. a3 Rd7 31. h5 g5 32. h6 Nd4 33. Rhg1
Rfd8 34. Qe3 Rg8 35. Rde1 Qd5 36. Rg4 Qc5 37. Rg2 Qd5 38. Qg1 Qf7 39. Qf2 Rd5
40. c3 *

[Dr.Wael Deeb]

It's pretty obvious actually.......
Dr.D

It's obvious that the king is in an awkward position, but would you be able to win easily against a computer (or even an human) this position (the fatal word here is *easily*, because +2.5 means almost a piece more)?

I would not, sincerely. While I can see that white is clearly better, a full continuation to win easily the game I cannot see.

This is +2.5, not +1.00.

It won't be easy to win this against a +2700 Elo chess engine let alone a beast like Deep Rybka or Houdini.....

I can't see the direct path crystal clear either,but with enough time on the clock and a slow squeezing playing technique,it can be achieved....

The master key here is to keep the pressure on the black king forcing it's army to a passive defensive position and winning the game.....

I guess that's what Houdini discovered long before us
Dr.D

[Dr.Wael Deeb]

[Event "105m+15s, unrated"]
[Site "Engine Room"]
[Date "2012.12.05"]
[Round "?"]
[White "Felix 2, Houdini 3 Pro x64"]
[Black "TryMe, Rybka Cluster 64 Cor"]
[Result "*"]
[ECO "B33"]
[PlyCount "79"]
[EventDate "2012.??.??"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. N1c3 Nf6 7. Bg5 a6 8.
Na3 Be6 9. Nc4 Rc8 10. Bxf6 Qxf6 11. Nb6 Rb8 12. Ncd5 Qg6 13. Qd3 Be7 14. Nc7+
Kd8 15. Ncd5 f5 16. Qc3 fxe4 17. O-O-O Bxd5 18. Nxd5 Rc8 19. Kb1 Rf8 20. Qb3 b5
21. Qa3 Qg4 22. f3 exf3 23. Nxe7 Kxe7 24. Qxd6+ Kf7 25. gxf3 Qf5 26. Qd5+ Kf6
27. Bd3 Qe6 28. Qe4 g6 29. h4 Rcd8 30. a3 Rd7 31. h5 g5 32. h6 Nd4 33. Rhg1
Rfd8 34. Qe3 Rg8 35. Rde1 Qd5 36. Rg4 Qc5 37. Rg2 Qd5 38. Qg1 Qf7 39. Qf2 Rd5
40. c3 *

The slow squeezing technique I was talking about....

Watch closely now....
Dr.D

[Leto]

Possible continuation after 40.c3:
6r1/5q1p/p4k1P/1p1rp1p1/3n4/P1PB1P2/1P3QR1/1K2R3 b - - 0 40


40. c3 Nf5 {1.99/16 8} 41. Be4 {2.31/17 4} Rdd8 {2.51/15 3 (Rd7)} 42. Bc2 {2.
51/15 3} Qe7 {2.14/14 3 (Qe6)} 43. Qb6+ {2.39/15 5} Qd6 {2.32/17 3} 44. Qg1 {
2.39/17 6 (Qb7)} Nxh6 {2.69/17 2} 45. Qh2 {2.44/17 2} Nf5 {2.03/16 3} 46. Qxh7
{2.32/16 2} Qd7 {2.34/17 17 (Qe6)} 47. Qh5 {2.45/17 3 (Qh2)} Qe6 {2.73/17 2}
48. Ka1 {2.81/18 14} a5 {2.82/17 8} 49. Qh7 {2.54/17 2} Rh8 {2.63/16 4} 50. Qa7
{2.35/15 0} Rdg8 {2.67/15 6 (Rde8)} 51. Qxa5 {2.71/13 2} Qc6 {2.90/15 6 (Nh4)}
52. Be4 {3.01/15 3} Qd7 {2.95/15 3} 53. Qb6+ {3.31/16 8} Qe6 {3.02/16 2} 54.
Qxb5 {3.02/16 4 (Qc5)} Nd6 {3.27/15 0} 55. Qb4 {3.12/16 3 (Qe2)} Rb8 {3.54/16
6 (Rh4)} 56. Qc5 {3.32/15 0} Nxe4 {4.06/16 17} 57. fxe4 {3.79/15 0} Kg6 {3.58/
14 3 (Rh4)} 58. Reg1 {3.39/13 0} Rh5 {3.66/16 3} 59. b4 {3.89/15 3} Ra8 {4.09/
14 2 (Kh6)} 60. Kb2 {3.90/13 0} Rah8 {4.10/14 3} 61. Qe3 {3.91/13 0} Qf6 {4.34/
15 4} 62. Rf2 {4.15/14 0} Qe7 {4.46/15 7} 63. Rf5 {4.27/14 0} Rf8 {4.52/14 2}
64. Qe2 {4.33/13 0} Kh6 {4.94/15 11} 65. a4 {4.75/14 0} Rd8 {5.27/15 9 (Rg8)}
66. a5 {5.08/14 0} Rg8 {5.52/13 3 (Rd6)} 67. a6 {5.94/12 2} Rg7 {6.29/12 1
(Kg6)} 68. Rg2 {6.10/11 0} Rh7 {7.24/14 7 (Rh4)} 69. a7 {10.69/14 2 (b5)} Qxa7
{15.53/18 6} 70. Qf3 {15.34/17 0} 1-0

[IWB]

You are welcome, but it is not just me, several people donated some money to make this happen!

Thanks to all of them!

Bye
Ingo

[S.Taylor]

Seven moves later, after move 38.Qg1.

[d]6r1/3r3p/p4k1P/1p1qp1p1/3n4/P2B1P2/1PP3R1/1K2R1Q1 b - - 0 38
Material still equal, but Houdini +2.43, Rybka +2.01. No idea why, white doesn't appear to be winning material.
Is this a 2 pawn positional advantage for the awkward position of the Black King?

No idea why

Are you kidding me

The black king's shelter is destroyed with the the king himself being shifted slowly to the center of the borad........

It's pretty obvious actually.......
Dr.D

Wow! It's NOT pretty, but obvious!

[Houdini]

While I can see that white is clearly better, a full continuation to win easily the game I cannot see.

White has now played nearly 20 moves without finding a crack in Black's defense. I wouldn't be surprised to see this game end in a draw, unless Rybka fails under time pressure.

[d]4r3/3r3p/p4k1P/1p1qp1p1/5nR1/P1P1QP2/1PB5/K3R3 b - - 0 45

P.S. Note the nice 44.Ka1! threatening to bring the bishop to a2!

[Lavir]

I don't think so Robert. Houdini now shows +3 in pondering.

If I had to play the game I would draw against strong opposition probably, but Houdini seems to have the path to victory clear.

EDIT: As for Ka1!, yes I noticed that move when it was made with the intention of Ba2. Houdini really plays these wonderful moves sometimes.

EDIT: And also notice too how Rybka instead didn't understood the motive of the move since it wanted to move the king back to b1!!!!

[Houdini]

I don't think so Robert. Houdini now shows +3 in pondering.

If I had to play the game I would draw against strong opposition probably, but Houdini seems to have the path to victory clear.

EDIT: As for Ka1!, yes I noticed that move when it was made with the intention of Ba2. Houdini really plays these wonderful moves sometimes.

Because Rybka finally cracked and played 45...Ne6?
46.Bb1! is game over, but note that Rybka expected Kb1? after over 5 minutes thinking .

[Dr.Wael Deeb]

Seven moves later, after move 38.Qg1.

[d]6r1/3r3p/p4k1P/1p1qp1p1/3n4/P2B1P2/1PP3R1/1K2R1Q1 b - - 0 38
Material still equal, but Houdini +2.43, Rybka +2.01. No idea why, white doesn't appear to be winning material.
Is this a 2 pawn positional advantage for the awkward position of the Black King?

No idea why

Are you kidding me

The black king's shelter is destroyed with the the king himself being shifted slowly to the center of the borad........

It's pretty obvious actually.......
Dr.D

Wow! It's NOT pretty, but obvious!