bob wrote:Uri Blass wrote:OliverBr wrote:Uri Blass wrote:You can display a diagram by writing D before the fen when you write [ before the D and ] after the D
[D]rn1qk2r/pp3ppp/2p1p3/3p3n/3P1P1P/1PNB1P2/P1PQ1P2/R3K2R b KQkq - 0 12
I think that pawn structure was not the only problem in the game.
That's suprising, because as far as my chess knowledge goes, white's pawn structure is quite bad.
But perhaps it's less worse than I thought until white opens the black's f-file. Since that moment the game is lost.
I believe that it is a common mistake of humans to overevaluate pawn structure and one of the reasons that rybka is better is the fact that rybka has smaller scores for bad pawn structure relative to most programs.
Uri
One thing is clear. In this position if white doesn't have some marvelous tactical idea to press on with, he is going to lose any endgame reached with that pawn structure...
I agree that I expect white to lose endgame with that pawn structure but
I tried it in comp-comp game and rybka as white can win in part of the games because white does not have to trade pieces and get an endgame with that pawn structure.
Here is an example.
[Event "URI-AMD, Blitz:3'+3""]
[Site "URI-AMD"]
[Date "2008.01.30"]
[Round "2"]
[White "Rybka 2.3.2a 32-bit"]
[Black "Toga II 1.4 beta5c"]
[Result "1-0"]
[Annotator "-0.17;-0.46"]
[SetUp "1"]
[FEN "rn1qk2r/pp3ppp/2p1p3/3p3n/3P1P1P/1PNB1P2/P1PQ1P2/R3K2R b KQkq - 0 1"]
[PlyCount "168"]
[TimeControl "180+3"]
1... Qb6 {Both last book move -0.17/12 9} 2. Bf1 {-0.17/12 8} Nd7 {-0.46/14 11}
3. O-O-O {(f4-f5) -0.16/12 2} O-O-O {-0.76/15 10} 4. Kb2 {(Bf1-h3) -0.15/13 9}
g6 {-0.85/15 15} 5. Qe3 {(Bf1-h3) -0.13/13 6} Qc7 {-0.90/16 9} 6. Ne2 {
-0.17/12 2} Kb8 {-0.89/16 8} 7. Bh3 {-0.19/12 3} Nhf6 {(Rh8-e8) -0.93/15 8} 8.
Rhg1 {-0.19/12 11} Rc8 {-0.98/14 8} 9. Nc3 {(c2-c3) -0.21/12 25} Rhe8 {
(Rh8-g8) -1.07/14 7} 10. Ne2 {-0.26/11 10} Ka8 {(Qc7-d6) -1.12/13 5} 11. Nc3 {
(c2-c3) -0.21/12 11} Nh5 {(Qc7-d6) -1.25/14 5} 12. Ne2 {-0.21/11 2} c5 {
(Ka8-b8) -1.09/14 8} 13. dxc5 {-0.25/11 8} Nxc5 {(Qc7xc5) -1.10/13 7} 14. Bg4 {
(Kb2-a1) -0.13/11 2} Nf6 {(Nh5-g7) -1.07/14 7} 15. Bh3 {(Ne2-d4) -0.13/11 9}
Qa5 {(Qc7-b6) -1.10/12 8} 16. Nd4 {-0.11/12 7} h6 {(Qa5-b4) -1.08/13 6} 17. Bf1
{(c2-c3) -0.03/11 8} a6 {-1.10/13 5} 18. Bd3 {(Bf1-h3) -0.11/11 8} Nh5 {
(Qa5-b4) -1.31/12 6} 19. Ne2 {(Kb2-b1) -0.28/11 6} b5 {(Qa5-d8) -1.25/12 8} 20.
c3 {-0.22/11 16} Qd8 {(b5-b4) -1.09/12 5} 21. Bc2 {(Rg1-h1) 0.00/10 4} Qc7 {
(Ka8-b7) -0.98/12 10} 22. Rd2 {(Rg1-e1) -0.03/10 6} Nf6 {(Ka8-b7) -0.99/13 5}
23. Nd4 {(Kb2-a1) 0.00/11 4} e5 {(Nf6-h5) -2.06/13 5} 24. f5 {
(Nd4-e2) -0.51/11 6} exd4 {-1.59/12 5} 25. Qxd4 {-0.47/9 0} Qd8 {
(Qc7-e5) -1.80/12 4} 26. fxg6 {-0.58/11 2} Ne6 {-1.70/14 7} 27. Qe3 {
(Qd4-b4) -0.46/13 6} Ng5 {-1.52/13 7} 28. Qd3 {-0.38/12 1} Nh3 {-1.24/13 6} 29.
gxf7 {-0.28/12 3} Nxg1 {-1.07/13 4} 30. fxe8=Q {(f7xe8B) -0.41/13 2} Qxe8 {
-0.88/15 5} 31. a4 {(Rd2-d1) -0.40/13 6} Rc7 {-1.26/12 4} 32. axb5 {-0.48/13 3}
Qxb5 {-0.99/13 5} 33. Qe3 {-0.46/13 3} Qc5 {-0.81/13 4} 34. Bd1 {
(Rd2-d1) -0.54/12 7} Qc6 {(a6-a5) -1.11/12 5} 35. Rd4 {-0.17/11 3} Nh3 {
(a6-a5) -0.91/12 5} 36. Be2 {(Bd1-c2) 0.00/12 6} Rb7 {(Nh3xf2) -0.84/13 6} 37.
Qxh6 {0.08/9 1} Rb8 {(a6-a5) -0.85/13 6} 38. Bf1 {(Qh6-c1) 0.00/11 5} Nxf2 {
(Nh3-g1) -0.47/13 5} 39. Qd2 {0.09/12 4} Nh1 {0.23/14 5} 40. Qh2 {
(Qd2-g2) 0.00/12 4} Rc8 {-0.33/13 4} 41. Rd3 {0.00/13 4} Nd7 {-1.27/12 4} 42.
Qd2 {(c3-c4) -0.03/12 3} Nc5 {-0.48/12 9} 43. Rxd5 {0.03/12 2} Nxb3 {-0.56/13 4
} 44. Kxb3 {0.11/13 2} Rb8+ {(Nh1-g3) -0.36/12 4} 45. Ka3 {(Kb3-c2) 1.27/12 4}
Ng3 {1.18/12 3} 46. Bd3 {1.32/11 1} Qb7 {1.09/12 4} 47. Qa2 {1.19/9 0} Rc8 {
1.53/11 4} 48. Bc4 {(Ka3-a4) 1.58/9 1} Qb6 {1.76/11 4} 49. Ka4 {1.92/11 9} Rh8
{2.00/11 7} 50. Bxa6 {(Rd5-d4) 1.95/11 1} Rxh4+ {2.11/11 4} 51. Bc4 {1.76/10 0}
Rh7 {2.18/12 2} 52. Rb5 {(Rd5-a5+) 2.09/12 1} Ra7+ {2.15/14 3} 53. Kb3 {
1.89/11 0} Qxb5+ {(Ra7xa2) 2.36/15 3} 54. Bxb5 {1.95/9 0} Rxa2 {2.46/18 1} 55.
Kxa2 {2.41/20 1} Kb7 {2.62/21 4} 56. Kb3 {2.81/21 5} Nf5 {(Ng3-h5) 2.62/21 4}
57. Kb4 {3.03/20 3} Kc7 {3.09/19 4} 58. Kc5 {3.04/19 1} Kd8 {3.20/21 4} 59. Bd3
{3.21/19 2} Ne7 {3.51/21 4} 60. Kd6 {(f3-f4) 3.73/20 2} Nc8+ {3.51/18 4} 61.
Ke6 {(Kd6-e5) 4.36/21 1} Nb6 {3.53/18 3} 62. Bb5 {(c3-c4) 5.16/20 2} Na8 {
(Kd8-c7) 10.38/18 9} 63. c4 {9.66/18 7} Nc7+ {10.34/19 4} 64. Kd6 {9.64/17 3}
Na8 {10.53/19 4} 65. f4 {9.64/15 3} Nb6 {10.72/17 3} 66. Ke6 {10.97/15 2} Nc8 {
13.70/17 6} 67. f5 {10.97/13 1} Ne7 {13.76/18 4} 68. c5 {(f5-f6) 14.75/15 2}
Ng8 {14.31/17 4} 69. f6 {14.75/13 1} Nh6 {14.31/17 4} 70. f7 {14.79/12 1} Nxf7
{#13/19 4} 71. Kxf7 {14.79/13 1} Kc8 {#10/22 2} 72. Ke6 {14.87/12 3} Kc7 {
#9/25 2} 73. c6 {(Ke6-e5) 14.91/10 2} Kb6 {14.09/12 7} 74. Kd6 {
(Ke6-d5) 15.17/9 2} Kxb5 {(Kb6-a5) 10.53/10 3} 75. c7 {35.35/8 7} Kc4 {
(Kb5-b6) 10.60/10 7} 76. Kc6 {(Kd6-e5) 11.33/8 8} Kd4 {10.43/9 2} 77. c8=Q {
11.45/8 10} Ke3 {10.53/9 2} 78. Kd5 {11.46/6 3} Kf4 {10.80/10 3} 79. Qh3 {
(Qc8-f8+) 12.05/6 3} Kg5 {10.39/4 0} 80. Ke5 {#6/4 0} Kg6 {10.41/4 0} 81. Qe6+
{(Qh3-f5+) #5/3 0} Kg7 {#4/63 0} 82. Qe8 {(Qe6-e7+) #4/3 0} Kh6 {#3/63 0} 83.
Kf6 {#3/3 0} Kh7 {#2/4 0} 84. Qg6+ {(Qe8-d7+) #2/3 0} Kh8 {#1/4 0} 85. Qg7# {
#1/3 0} 1-0