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Up Topic Rybka Support & Discussion / Rybka Discussion / Finally a win for Rybka ?
- - By Ankan (*) [in] Date 2007-09-26 18:01
Looks like zappa played the last few moves too quickly :D ... eval showing +6.23 currently :)
Parent - - By Fulcrum2000 (****) [nl] Date 2007-09-26 18:07
Yep, the game has just finished 1-0

[White "Rybka"]
[Black "Zappa"]
[WhiteElo "3099"]
[BlackElo "3050"]
[Result "*"]
[GameID "144"]
[WhiteClock "0:13:28"]
[BlackClock "0:08:54"]
[Stamp "3492"]
[LastMoves "70...Qxb8 71.Bxb8 +9.50"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3 b5 7.Bb3 Bb7 8.Nc3 O-O 9.Re1 d6 10.a3 Qd7 11.h3 Rae8 12.a4 b4 13.Nd5 Na5 14.Nxe7+ Qxe7 15.Ba2 Rb8 16.Nh4 Bc8 17.Bg5 Kh8 18.Nf5 Bxf5 19.exf5 Qd7 20.g4 b3 21.Bxb3 Nxb3 22.cxb3 c5 23.Ra3 Ng8 24.Qe2 f6 25.Bd2 Ne7 26.d4 Nc6 27.dxe5 Nd4 28.Qxa6 Nf3+ 29.Kg2 Nxe1+ 30.Bxe1 dxe5 31.Qc4 Rfd8 32.a5 Qa7 33.Bc3 Rd1 34.f3 h6 35.Qe2 Rbd8 36.Be1 R1d4 37.Ra1 Rd3 38.Bc3 R8d6 39.h4 Qa6 40.Kg3 Qb7 41.Kg2 Kg8 42.Ra3 Qa6 43.Qe4 Kh8 44.Qc4 Qb7 45.Qe4 Qa7 46.Qe2 Qa6 47.Kg3 c4 48.b4 Qa7 49.Kg2 Rd1 50.Be1 Qd7 51.Kg3 R6d3 52.a6 Rxa3 53.bxa3 Rd3 54.Bf2 Qd5 55.a7 Rxa3 56.b5 Qxb5 57.Qe4 Qe8 58.Qb7 Qd8 59.Qb8 Qg8 60.g5 Ra2 61.Be1 Ra6 62.Bc3 Ra2 63.Kg4 Kh7 64.g6+ Kh8 65.Qb7 Ra3 66.Qb8 Ra2 67. Kh5 Ra3 68. Bxe5 Rxa7 69. Qxa7 Qc8 70. Qb8 Qxb8 71. Bxb8  1-0
Parent - - By ubaldus (*) [us] Date 2007-09-26 18:34
[deleted]
Parent - By ubaldus (*) [us] Date 2007-09-26 18:44 Edited 2007-09-26 19:06
58... Qd8 is probably bad as well, I don't see how white is winning after 58... c3
And why not  60.... hg  61. hg fg. Does not seem like white is having much here.
Parent - - By Fulcrum2000 (****) [nl] Date 2007-09-26 20:18 Edited 2007-09-26 20:21
Game 9 is also looking very promising now (move 40)!!.

Seem the strategy of getting Zappa out of book fast pays off again.

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Bc4 Ngf6 6. Ng5 e6 7. Qe2 Nb6 8. Bd3 h6 9. N5f3 c5 10. dxc5 Bxc5 11. Ne5 Nbd7 12. Ngf3 Nxe5 13. Nxe5 O-O 14. O-O b6 15. Bf4 Qd4 16. Bg3 Bb7 17. c4 Qd8 18. Rad1 Qe7 19. Kh1 Rfd8 20. a3 Bd4 21. Bh4 Rd6 22. f4 Rad8 23. Bb1 Kf8 24. Rd3 Qc7 25. b4 a5 26. Re1 Ba1 27. Rc1 Rd4 28. Rcd1 Rxd3 29. Bxd3 Bc3 30. bxa5 Bxa5 31. Bg3 Kg8 32. Bf2 Bc3 33. Bg1 Ne4 34. Qc2 Bxe5 35. fxe5 Qxe5 36. Bxb6 Rd6 37. Bg1 Qh5 38. Be3 Ng3+ 39. Kg1 Nf5 40. Bf4 Rd4 41. Be2 Qh4 42. Bc1 Qd8 43. Rf1

zappa_mexico_x64 (0:00.24)-0.95|d12)
Rybka v2.3.2h3.mp.x64 (0:00.34)-1.44|d20)
Parent - - By Gaмßito (****) [cr] Date 2007-09-26 20:42 Edited 2007-09-26 21:20
Yes! Rybka is winning again!  Miraculous come back!!!

EDIT:3
[Event "Blitz:10'+15"]
[Site "?"]
[Date "2007.09.26"]
[Round "9"]
[White "Zappa Mexico X64 "]
[Black "Rybka"]
[Result "1/2-1/2"]
[ECO "B17"]
[PlyCount "180"]
[EventDate "2007.??.??"]
[TimeControl "600+15"]

{4MB, ZapM X Wihte.ctg, ZAPPA} 1. e4 {B/0 0} c6 {8} 2. d4 {B/0 0} d5 {6} 3. Nc3
{B/0 0} dxe4 {11} 4. Nxe4 {B/0 0} Nd7 {7} 5. Bc4 {B/0 0} Ngf6 {10} 6. Ng5 {
B/0 0} e6 {9} 7. Qe2 {B/0 0} Nb6 {9} 8. Bd3 {B/0 0} h6 {9} 9. N5f3 {B/0 0} c5 {
10} 10. dxc5 {B/0 0} Bxc5 {8} 11. Ne5 {B/0 0} Nbd7 {9} 12. Ngf3 {B/0 0} Nxe5 {
13} 13. Nxe5 {B/0 0} O-O {7} 14. O-O {B/0 0} b6 {8} 15. Bf4 {B/0 0} Qd4 {707}
16. Bg3 {0.38/18 160} Bb7 {190} 17. c4 {0.39/19 0} Qd8 {74} 18. Rad1 {
0.41/19 50} Qe7 {104} 19. Kh1 {0.38/19 58} Rfd8 {136} 20. a3 {0.27/18 130} Bd4
{(Sd7) 127} 21. Bh4 {0.24/18 278} Rd6 {(Lxe5) 73} 22. f4 {0.30/18 169} Rad8 {
(a5) 10} 23. Bb1 {0.28/17 186} Kf8 {35} 24. Rd3 {0.28/17 103} Qc7 {12} 25. b4 {
0.26/17 118} a5 {(La6) 72} 26. Re1 {0.12/17 165} Ba1 {99} 27. Rc1 {0.19/18 314}
Rd4 {(axb4) 72} 28. Rcd1 {0.16/17 134} Rxd3 {18} 29. Bxd3 {0.00/18 187} Bc3 {9}
30. bxa5 {-0.09/18 144} Bxa5 {64} 31. Bg3 {-0.06/18 33} Kg8 {61} 32. Bf2 {
-0.20/18 72} Bc3 {(Se4) 59} 33. Bg1 {-0.23/18 132} Ne4 {196} 34. Qc2 {
-0.19/20 0} Bxe5 {321} 35. fxe5 {-0.16/21 0} Qxe5 {(Sc5) 45} 36. Bxb6 {
-0.24/18 159} Rd6 {(Td7) 9} 37. Bg1 {-0.14/18 104} Qh5 {(Td7) 23} 38. Be3 {
-0.21/17 108} Ng3+ {(Lc6) 10} 39. Kg1 {0.28/7 1} Nf5 {(De5) 22} 40. Bf4 {
-0.80/17 131} Rd4 {458} 41. Be2 {-0.96/19 26} Qh4 {13} 42. Bc1 {-0.95/18 102}
Qd8 {10} 43. Rf1 {-0.95/18 114} Qc7 {11} 44. Rf2 {-0.96/18 118} Rh4 {18} 45. h3
{-0.95/19 105} Nd4 {32} 46. Qb2 {-0.96/19 107} Nxe2+ {8} 47. Qxe2 {-0.96/19 30}
Re4 {25} 48. Qf1 {-0.96/18 4} Rxc4 {(La6) 33} 49. Bf4 {-0.91/17 34} Qc6 {11}
50. Rb2 {-0.89/17 27} Rc3 {44} 51. Qb5 {-0.99/18 0} Qxb5 {14} 52. Rxb5 {
-1.04/18 0} Bd5 {21} 53. Bd6 {-1.03/18 19} Rc1+ {30} 54. Kf2 {-1.11/18 6} Rc2+
{13} 55. Ke1 {-1.10/19 72} Rxg2 {(Lxg2) 14} 56. Rc5 {-1.25/18 34} g5 {11} 57.
Rc3 {-1.32/18 18} Ra2 {16} 58. h4 {-1.36/18 29} f5 {(gxh4) 12} 59. hxg5 {
-1.24/17 31} hxg5 {7} 60. Rg3 {-1.25/18 22} g4 {26} 61. Rc3 {-1.43/18 3} Kf7 {
30} 62. Be5 {-1.74/18 24} Kg6 {(Lf3) 37} 63. Rc8 {-1.95/18 47} Rxa3 {(Lf3) 29}
64. Rg8+ {-1.61/17 29} Kf7 {15} 65. Rg7+ {-1.61/18 0} Kf8 {13} 66. Kd2 {
-1.93/18 38} Ra4 {(Ta5) 9} 67. Kc3 {-1.93/17 59} Re4 {(Ta1) 11} 68. Bf6 {
-1.92/16 1} Bc4 {(Tc4+) 18} 69. Kd2 {-2.14/18 48} Be2 {14} 70. Rg5 {-2.34/18 35
} Kf7 {(Lf3) 10} 71. Bh8 {-2.49/18 42} f4 {(Lf3) 35} 72. Re5 {-1.98/19 35} Rxe5
{(Lf3) 29} 73. Bxe5 {-1.98/12 1} f3 {10} 74. Ke3 {-2.15/26 26} Kg6 {10} 75. Bd6
{-2.15/26 30} Kf6 {(Kf5) 56} 76. Bg3 {-2.15/26 24} Kf5 {(Kg5) 136} 77. Bh2 {
-2.15/28 42} e5 {12} 78. Bg3 {-2.15/28 0} Bc4 {(Ld1) 64} 79. Bh4 {-2.15/30 60}
Ba6 {(Lb3) 56} 80. Bg3 {-2.15/28 35} Ke6 {(Kf6) 49} 81. Be1 {-2.15/27 23} Kd5 {
(Kf6) 47} 82. Bh4 {-2.15/29 40} Bb5 {(Ke6) 11} 83. Be1 {-2.15/27 30} Be2 {
(Lc6) 95} 84. Bf2 {-2.15/28 27} Bc4 {94} 85. Be1 {-2.15/28 0} Bb3 {(Ke6) 83}
86. Kd3 {-2.15/26 22} Kc6 {(Lc4+) 41} 87. Ke4 {-2.15/23 22} Kd6 {13} 88. Bb4+ {
-2.15/24 9} Kd7 {(Ke6) 24} 89. Be1 {-2.15/25 24} Ke6 {13} 90. Ke3 {-2.15/27 8}
Bc2 {(Ld5) 44} 1/2-1/2

8/8/4k3/4p3/6p1/4Kp2/2b5/4B3 w - - 0 1


Analysis by Rybka 2.3.2a 32-bit :

91.Bg3 Kf5 92.Be1 Bb3 93.Bg3
  -+  (-4.22)   Depth: 27   00:00:00  0kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3
  -+  (-4.22)   Depth: 28   00:00:00  0kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 29   00:00:03  83kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 30   00:00:11  422kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 31   00:00:22  869kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 32   00:00:36  1431kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 33   00:00:56  2194kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 34   00:01:19  3205kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 35   00:01:46  4381kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 36   00:02:22  5911kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 37   00:03:05  7664kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 38   00:03:48  9679kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 39   00:04:57  12669kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 40   00:06:17  16236kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 41   00:07:47  20533kN
91.Bg3 Kf5 92.Be1 Bb3 93.Bg3 Bg8 94.Be1 Bd5 95.Bg3 Be4 96.Be1 Bc6 97.Bg3 Bb5 98.Be1 Bf1 99.Bg3 Be2 100.Be1 Bb5 101.Bg3 Ba4 102.Be1 Bb3 103.Bg3 Bg8 104.Be1 Bd5 105.Bg3 Be4 106.Be1 Bc6
  -+  (-4.22)   Depth: 42   00:09:43  26056kN

(, AMD 26.09.2007)
Parent - - By Kapaun (****) [de] Date 2007-09-26 20:46
Where do you get the moves from? ChessOK broke down at move 50...
Parent - By Gaмßito (****) [cr] Date 2007-09-26 20:55
From playchess site. Apparently at the moment everything is fine there.

Regards,
Gambito.
Parent - - By InspectorGadget (****) [za] Date 2007-09-26 21:06
I thought there was something wrong with my connection. I've been trying to refresh my browser. Anyway, as long as Rybka is winning, no problem. Miraculous comeback indeed. :)
Parent - By Fulcrum2000 (****) [nl] Date 2007-09-26 21:08
I'm afraid Rybka has no more then a draw (with 3 pawns more!). Have a look below.
Parent - - By Uri Blass (*****) [il] Date 2007-09-26 20:48
I do not see this in
http://www.chessok.com/broadcast/live.html and I can only see the first 50 moves.

I wonder what is the reason that this link does not give the latest information that is known.

Uri
Parent - By FWCC (***) [us] Date 2007-09-26 20:51
Please keep Game 9 updated for us folks at work(SMILES) I can't see a darn thing.
Parent - - By Uri Blass (*****) [il] Date 2007-09-26 20:52
I am still not sure that black wins based on your pgn.

opposite color bishops and the question is if black can get progress.
Note that I did not analyze it with chess engines and the question is if you see a progress in the score of black when they analyze deeper.

The fact that the score of zappa improved relative to the score in previous plies is not a good sign

Edit:it seems that Rxa3 was a mistake based only on my human eye of watching the pgn and not based on analysis with chess engines.
Zappa expected a different move and it seems that zappa simply has more knowledge about chess than rybka.

Uri
Parent - - By onursurme (***) [tr] Date 2007-09-26 20:53
r1b1k1r1/pppp1pBp/8/b2P4/2B4q/1Q6/P4PP1/R4RK1 w q - 0 1

rybka's evaluation got stuck at 4.93 . its not a good sign. a fortress, a draw ?
Parent - - By onursurme (***) [tr] Date 2007-09-26 20:55
sory, wrong position. I copied from chess assistant club, but the program gave me the wrong position :)
its move 72.
Parent - - By onursurme (***) [tr] Date 2007-09-26 20:58
white : bishop h8, rook e5, king d2
black : pawn e6, f4, g4, rook e4, king f7, bishop e2
blacks to move
Parent - - By Gaмßito (****) [cr] Date 2007-09-26 20:59
8/8/b7/4pk2/6p1/4KpB1/8/8 b - - 0 80
Parent - By onursurme (***) [tr] Date 2007-09-26 21:02
still 4,93.
Parent - - By walden (**) [nz] Date 2007-09-26 21:02
this game is draw right white just keeps the bishop on g3 and f2
Parent - - By Kapaun (****) [de] Date 2007-09-26 21:03
Yep, it's a draw...
Parent - - By George Tsavdaris (****) Date 2007-09-26 21:08
Yes it is:

[Event "Blitz:10'+15"]
[Site "?"]
[Date "2007.09.26"]
[Round "9"]
[White "Zappa Mexico X64 "]
[Black "Rybka"]
[Result "1/2-1/2"]
[ECO "B17"]
[PlyCount "180"]
[EventDate "2007.??.??"]
[TimeControl "600+15"]

{4MB, ZapM X Wihte.ctg, ZAPPA} 1. e4 {B/0 0} c6 {8} 2. d4 {B/0 0} d5 {6} 3. Nc3
{B/0 0} dxe4 {11} 4. Nxe4 {B/0 0} Nd7 {7} 5. Bc4 {B/0 0} Ngf6 {10} 6. Ng5 {
B/0 0} e6 {9} 7. Qe2 {B/0 0} Nb6 {9} 8. Bd3 {B/0 0} h6 {9} 9. N5f3 {B/0 0} c5 {
10} 10. dxc5 {B/0 0} Bxc5 {8} 11. Ne5 {B/0 0} Nbd7 {9} 12. Ngf3 {B/0 0} Nxe5 {
13} 13. Nxe5 {B/0 0} O-O {7} 14. O-O {B/0 0} b6 {8} 15. Bf4 {B/0 0} Qd4 {707}
16. Bg3 {0.38/18 160} Bb7 {190} 17. c4 {0.39/19 0} Qd8 {74} 18. Rad1 {
0.41/19 50} Qe7 {104} 19. Kh1 {0.38/19 58} Rfd8 {136} 20. a3 {0.27/18 130} Bd4
{(Sd7) 127} 21. Bh4 {0.24/18 278} Rd6 {(Lxe5) 73} 22. f4 {0.30/18 169} Rad8 {
(a5) 10} 23. Bb1 {0.28/17 186} Kf8 {35} 24. Rd3 {0.28/17 103} Qc7 {12} 25. b4 {
0.26/17 118} a5 {(La6) 72} 26. Re1 {0.12/17 165} Ba1 {99} 27. Rc1 {0.19/18 314}
Rd4 {(axb4) 72} 28. Rcd1 {0.16/17 134} Rxd3 {18} 29. Bxd3 {0.00/18 187} Bc3 {9}
30. bxa5 {-0.09/18 144} Bxa5 {64} 31. Bg3 {-0.06/18 33} Kg8 {61} 32. Bf2 {
-0.20/18 72} Bc3 {(Se4) 59} 33. Bg1 {-0.23/18 132} Ne4 {196} 34. Qc2 {
-0.19/20 0} Bxe5 {321} 35. fxe5 {-0.16/21 0} Qxe5 {(Sc5) 45} 36. Bxb6 {
-0.24/18 159} Rd6 {(Td7) 9} 37. Bg1 {-0.14/18 104} Qh5 {(Td7) 23} 38. Be3 {
-0.21/17 108} Ng3+ {(Lc6) 10} 39. Kg1 {0.28/7 1} Nf5 {(De5) 22} 40. Bf4 {
-0.80/17 131} Rd4 {458} 41. Be2 {-0.96/19 26} Qh4 {13} 42. Bc1 {-0.95/18 102}
Qd8 {10} 43. Rf1 {-0.95/18 114} Qc7 {11} 44. Rf2 {-0.96/18 118} Rh4 {18} 45. h3
{-0.95/19 105} Nd4 {32} 46. Qb2 {-0.96/19 107} Nxe2+ {8} 47. Qxe2 {-0.96/19 30}
Re4 {25} 48. Qf1 {-0.96/18 4} Rxc4 {(La6) 33} 49. Bf4 {-0.91/17 34} Qc6 {11}
50. Rb2 {-0.89/17 27} Rc3 {44} 51. Qb5 {-0.99/18 0} Qxb5 {14} 52. Rxb5 {
-1.04/18 0} Bd5 {21} 53. Bd6 {-1.03/18 19} Rc1+ {30} 54. Kf2 {-1.11/18 6} Rc2+
{13} 55. Ke1 {-1.10/19 72} Rxg2 {(Lxg2) 14} 56. Rc5 {-1.25/18 34} g5 {11} 57.
Rc3 {-1.32/18 18} Ra2 {16} 58. h4 {-1.36/18 29} f5 {(gxh4) 12} 59. hxg5 {
-1.24/17 31} hxg5 {7} 60. Rg3 {-1.25/18 22} g4 {26} 61. Rc3 {-1.43/18 3} Kf7 {
30} 62. Be5 {-1.74/18 24} Kg6 {(Lf3) 37} 63. Rc8 {-1.95/18 47} Rxa3 {(Lf3) 29}
64. Rg8+ {-1.61/17 29} Kf7 {15} 65. Rg7+ {-1.61/18 0} Kf8 {13} 66. Kd2 {
-1.93/18 38} Ra4 {(Ta5) 9} 67. Kc3 {-1.93/17 59} Re4 {(Ta1) 11} 68. Bf6 {
-1.92/16 1} Bc4 {(Tc4+) 18} 69. Kd2 {-2.14/18 48} Be2 {14} 70. Rg5 {-2.34/18 35
} Kf7 {(Lf3) 10} 71. Bh8 {-2.49/18 42} f4 {(Lf3) 35} 72. Re5 {-1.98/19 35} Rxe5
{(Lf3) 29} 73. Bxe5 {-1.98/12 1} f3 {10} 74. Ke3 {-2.15/26 26} Kg6 {10} 75. Bd6
{-2.15/26 30} Kf6 {(Kf5) 56} 76. Bg3 {-2.15/26 24} Kf5 {(Kg5) 136} 77. Bh2 {
-2.15/28 42} e5 {12} 78. Bg3 {-2.15/28 0} Bc4 {(Ld1) 64} 79. Bh4 {-2.15/30 60}
Ba6 {(Lb3) 56} 80. Bg3 {-2.15/28 35} Ke6 {(Kf6) 49} 81. Be1 {-2.15/27 23} Kd5 {
(Kf6) 47} 82. Bh4 {-2.15/29 40} Bb5 {(Ke6) 11} 83. Be1 {-2.15/27 30} Be2 {
(Lc6) 95} 84. Bf2 {-2.15/28 27} Bc4 {94} 85. Be1 {-2.15/28 0} Bb3 {(Ke6) 83}
86. Kd3 {-2.15/26 22} Kc6 {(Lc4+) 41} 87. Ke4 {-2.15/23 22} Kd6 {13} 88. Bb4+ {
-2.15/24 9} Kd7 {(Ke6) 24} 89. Be1 {-2.15/25 24} Ke6 {13} 90. Ke3 {-2.15/27 8}
Bc2 {(Ld5) 44} 1/2-1/2

Rybka made the UNBELIEVABLE blunder of 71...f4? giving the half point and instead of the win it fought hard all game it took only the draw.
Rybka played 71...f4? here:
7B/5k2/4p3/5pR1/4r1p1/8/3Kb3/8 b - - 0 71
Parent - By onursurme (***) [tr] Date 2007-09-26 21:11
game finished. draw.
to finish the match equal, rybka must win tomorrow.
tomorrow in case of a draw, zappa wins.
Parent - By InspectorGadget (****) [za] Date 2007-09-26 21:09
A bad way for a draw.
Parent - - By walden (**) [nz] Date 2007-09-26 21:10
Computers will never be any good till they sort this out
most good humans can force the draw and computers have no idea
blacks best hope was to sac the rook for the bishop and take a plus 1.8 into
the end game and win this way instead of trying to win like it did
very bad result for Rybka I feel.
Parent - - By lkaufman (*****) Date 2007-09-27 02:01
Until we adopt very different approaches, like ¨Monte Carlo¨ method, there will always be freak endings that computers will draw when they should win. We can only hope to gradually decrease the frequency of them. But this doesn´t mean that computers are weak, it just means that Anand might occasionally scrape a lucky draw against them in a long match.
Parent - By j_futur (**) [mg] Date 2007-09-27 06:32
Hi Larry,

I've just though on the karo-kann and just a little on French defense  when Rybka played it.
That was great.
I think here that the chance was on Zappa. So you must do a great preparation for the last game.
Finding a win is difficult but, with Rybka, there is a good possibility. You just take care on some
drawing line and use a line that Rybka handle fine.

May I have your mail Larry?
Mine is j_futur@yahoo.fr.
Parent - By j_futur (**) [mg] Date 2007-09-27 07:41
I've already written to Vas my idea for the next win because I don't like to be late.
Thanks, regards.

j_futur
Parent - - By tano-urayoan (****) [pr] Date 2007-09-27 08:55
With all due respect mr Kaufman, i think your commentary is inapropiate. Why despise the skill of Mr Anand, who is in the verge of being world champion. Ok even mr Kramnik said that any of the two engines that are playing will easily win their tournament but why you must remark that he will be lucky to get a single draw? Is your playing entity far superior from the human play? The answer it seems to be yes, but you could be more humble in your triumph.
P.D. You dont see the gm's making fun at the mistakes made by Rybka in this endings, do you?
Parent - By lkaufman (*****) Date 2007-09-27 15:21
I don´t at all mean to denigrate the skill of GM Anand. Actually I admire him and am very pleased that he seems about to become World Champion. He is a real genius. He was watching our match yesterday. I only mean to say that no human can hope to compete with today´s programs. Right now Anand could get some draws against Rybka when he has the White pieces, but within another couple years I think that no human will be able to draw the best programs anymore. It´s not an insult to humans, they just cannot calculate like a machine.
Parent - - By miso [fr] Date 2007-09-27 15:39
Hi Larry,
Its a real shame rybka missed 71... Ke7 in the 9th game, especially when previous rybka versions found the winning move. Wouldn't it be possible to create a rybka knowledge base for non regression testing? It is a 1 day work (for a software engineer) to create a framework which could execute a database of test positions where it is clear which move is clearly the best (or the moves that are acceptable) and create a report like "XX% of positions solved in the specified amount of time".
I'm sure many here on the forum would be happy to create and discuss here such a database of test positions. This could ensure that rybka's knowledge is continually increasing over time and let enthusiasts participate to improve rybka a little.
Parent - By lkaufman (*****) Date 2007-09-27 16:49
In general, Vas and I don´t have a lot of confidence in relying on test positions, though they do have some value. The problem is that optimizing a program to do well on test suites may actually make it play weaker on average for various reasons. Finding the best move in positions where the best move is debateable is probably more important than finding the best move in positions where it is clear, because already Rybka will find the best move in the clear category 99% of the time perhaps, whereas in the debateable category the percentage of best moves is much lower and hence much easier to improve significantly.
Parent - - By Uri Blass (*****) [il] Date 2007-09-27 07:11
This is exactly what I meant when I said that rybka is a program that you cannot trust when she shows big advantage.

It also happened too often in my correspondence games.
I believe that it is rybka's main weakness and for some reason the rybka team did not care to fix this weakness.

Zappa was more realistic and evaluated the position only near 2 pawns for black.

Uri
Parent - By InspectorGadget (****) [za] Date 2007-09-27 07:21
Hahahahaha, I love Rybka. Nevertheless, sometimes I do become sceptical sometimes in her evaluation, especially when the pieces become less and less on the board. In the middle game, I do trust her evaluation.
Up Topic Rybka Support & Discussion / Rybka Discussion / Finally a win for Rybka ?

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