Interesting endgame

[Lyapko George]

Geschrieben von: / Posted by: Lyapko George at 16 January 2004 12:05:06:

In round 146 of my continuous blitz tournament this game was played:
[Event "Computer chess game"]
[Site "LYAPKO"]
[Date "2004.01.16"]
[Round "1"]
[White "Pharaon 2.62"]
[Black "Dorky_348"]
[Result "0-1"]
[TimeControl "40/300"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8.
Qf3 Qc7 9. O-O-O Nbd7 10. Bd3 h6 11. Qh3 O-O 12. Bh4 Nc5 13. Qg3 Re8 14.
Kb1 Nh5 15. Qf2 b5 16. Bxe7 Rxe7 17. Qf3 b4 18. Nce2 Nf6 19. Ng3 Bb7 20.
Rhe1 Rc8 21. h4 Rd7 22. Rc1 Qa5 23. h5 Qc7 24. Nb3 d5 25. e5 d4 26. Qe2 Nd5
27. Nxc5 Qxc5 28. Ne4 Qa5 29. f5 b3 30. cxb3 Nf4 31. Qf1 Rxc1+ 32. Rxc1
Nxd3 33. Qxd3 Qb5 34. Rc4 Qxe5 35. Nc5 Rc7 36. Nxb7 Qe1+ 37. Kc2 Qf2+ 38.
Kc1 Qe1+ 39. Qd1 Qe3+ 40. Qd2 Rxb7 41. Rc8+ Kh7 42. Qxe3 dxe3 43. fxe6 fxe6
44. Rc3 Rb5 45. Rxe3 Rxh5 46. Rxe6 Rg5 47. Re2 Kg6 48. Kc2 Kf5 49. Kc3 Rg4
50. a3 g5 51. b4 h5 52. Kb3 h4 53. a4 Re4 54. Rxe4 Kxe4 55. b5 Kd5 56. bxa6
Kc6 57. Kc4 g4 58. a5 h3 59. gxh3 gxh3 60. b3 h2 61. b4 h1=Q 62. b5+
{White resigns} 0-1
Which program will find that 54.Rxe4?? is losing immediately?
8/8/p7/5kp1/PP2r2p/1K6/1P2R1P1/8 w - -

Best regards,
George

[Jouni]

Geschrieben von: / Posted by: Jouni at 16 January 2004 12:15:38:
Als Antwort auf: / In reply to: Interesting endgame geschrieben von: / posted by: Lyapko George at 16 January 2004 12:05:06:

Sos4 UCI 68 MB:
1 00:00 0,84 Re2xe4
1 00:00 0,87 Re2f2+
2 00:00 0,87 Re2f2+ Kf5e5
3 00:00 0,78 Re2f2+ Kf5e5 Kb3c3
4 00:00 0,80 Re2f2+ Kf5e5 Kb3c3
4 00:00 0,94 Re2xe4 Kf5xe4 Kb3c4
5 00:00 1,20 Re2xe4 Kf5xe4 Kb3c4 g5g4 b4b5
6 00:00 1,20 Re2xe4 Kf5xe4 Kb3c4 g5g4 b4b5 a6xb5+ Kc4xb5
7 00:00 1,24 Re2xe4 Kf5xe4 b4b5 a6xb5 a4a5 Ke4d5 a5a6 Kd5c6 a6a7
8 00:00 0,81 Re2xe4 Kf5xe4 b4b5 a6xb5 a4a5 Ke4d5 a5a6 Kd5c6 Kb3c3 g5g4
9 00:00 0,65 Re2xe4 Kf5xe4 Kb3c4 g5g4 b4b5 a6xb5+ a4xb5 Ke4e5 b5b6 Ke5d6 Kc4d4 h4h3 b6b7 Kd6c7
10 00:00 0,48 Re2f2+ Kf5e5 b4b5 a6xb5 a4xb5 Ke5d4 Kb3c2 Re4e6 b2b3
11 00:00 0,48 Re2f2+ Kf5e5 b4b5 a6xb5 a4xb5 Ke5d4 Kb3c2 Re4e6 b2b3
12 00:01 0,57 Re2f2+ Kf5e5 b4b5 a6xb5 a4xb5 Ke5d4 Rf2c2 Re4e6 Kb3b4
13 00:02 0,57 Re2f2+ Kf5e5 b4b5 a6xb5 a4xb5 Ke5d4 Rf2c2 Re4e6 Kb3b4
14 00:07 0,40 Re2c2 g5g4 Rc2c3 Re4e2 b4b5 a6xb5 a4xb5 Re2xg2 b5b6 Rg2e2 b6b7 Re2e8 Rc3c8 Re8e3+ Kb3c4
15 00:09 0,40 Re2c2 g5g4 Rc2c3 Re4e2 b4b5 a6xb5 a4xb5 Re2xg2 b5b6 Rg2e2 b6b7 Re2e8 Rc3c8 Re8e3+ Kb3c4
16 00:21 0,26 Re2f2+ Kf5g4 b4b5 a6xb5 a4xb5 Kg4g3 Rf2c2 g5g4 b5b6 Re4e6 Kb3c4 Re6xb6
Jouni

[Igor Gorelikov]

Geschrieben von: / Posted by: Igor Gorelikov at 16 January 2004 12:19:27:
Als Antwort auf: / In reply to: Interesting endgame geschrieben von: / posted by: Lyapko George at 16 January 2004 12:05:06:

In round 146 of my continuous blitz tournament this game was played:
[Event "Computer chess game"]
[Site "LYAPKO"]
[Date "2004.01.16"]
[Round "1"]
[White "Pharaon 2.62"]
[Black "Dorky_348"]
[Result "0-1"]
[TimeControl "40/300"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8.
Qf3 Qc7 9. O-O-O Nbd7 10. Bd3 h6 11. Qh3 O-O 12. Bh4 Nc5 13. Qg3 Re8 14.
Kb1 Nh5 15. Qf2 b5 16. Bxe7 Rxe7 17. Qf3 b4 18. Nce2 Nf6 19. Ng3 Bb7 20.
Rhe1 Rc8 21. h4 Rd7 22. Rc1 Qa5 23. h5 Qc7 24. Nb3 d5 25. e5 d4 26. Qe2 Nd5
27. Nxc5 Qxc5 28. Ne4 Qa5 29. f5 b3 30. cxb3 Nf4 31. Qf1 Rxc1+ 32. Rxc1
Nxd3 33. Qxd3 Qb5 34. Rc4 Qxe5 35. Nc5 Rc7 36. Nxb7 Qe1+ 37. Kc2 Qf2+ 38.
Kc1 Qe1+ 39. Qd1 Qe3+ 40. Qd2 Rxb7 41. Rc8+ Kh7 42. Qxe3 dxe3 43. fxe6 fxe6
44. Rc3 Rb5 45. Rxe3 Rxh5 46. Rxe6 Rg5 47. Re2 Kg6 48. Kc2 Kf5 49. Kc3 Rg4
50. a3 g5 51. b4 h5 52. Kb3 h4 53. a4 Re4 54. Rxe4 Kxe4 55. b5 Kd5 56. bxa6
Kc6 57. Kc4 g4 58. a5 h3 59. gxh3 gxh3 60. b3 h2 61. b4 h1=Q 62. b5+
{White resigns} 0-1
Which program will find that 54.Rxe4?? is losing immediately?
8/8/p7/5kp1/PP2r2p/1K6/1P2R1P1/8 w - -

Best regards,
George

Most chess programs cannot estimate complex pawn endgame in right manner.
I watch many times bad rook trade and losing in pawn endgame by top engines.
Regards,
Igor

[Richard Pijl]

Geschrieben von: / Posted by: Richard Pijl at 16 January 2004 14:17:12:
Als Antwort auf: / In reply to: Interesting endgame geschrieben von: / posted by: Lyapko George at 16 January 2004 12:05:06:

In round 146 of my continuous blitz tournament this game was played:
[Event "Computer chess game"]
[Site "LYAPKO"]
[Date "2004.01.16"]
[Round "1"]
[White "Pharaon 2.62"]
[Black "Dorky_348"]
[Result "0-1"]
[TimeControl "40/300"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8.
Qf3 Qc7 9. O-O-O Nbd7 10. Bd3 h6 11. Qh3 O-O 12. Bh4 Nc5 13. Qg3 Re8 14.
Kb1 Nh5 15. Qf2 b5 16. Bxe7 Rxe7 17. Qf3 b4 18. Nce2 Nf6 19. Ng3 Bb7 20.
Rhe1 Rc8 21. h4 Rd7 22. Rc1 Qa5 23. h5 Qc7 24. Nb3 d5 25. e5 d4 26. Qe2 Nd5
27. Nxc5 Qxc5 28. Ne4 Qa5 29. f5 b3 30. cxb3 Nf4 31. Qf1 Rxc1+ 32. Rxc1
Nxd3 33. Qxd3 Qb5 34. Rc4 Qxe5 35. Nc5 Rc7 36. Nxb7 Qe1+ 37. Kc2 Qf2+ 38.
Kc1 Qe1+ 39. Qd1 Qe3+ 40. Qd2 Rxb7 41. Rc8+ Kh7 42. Qxe3 dxe3 43. fxe6 fxe6
44. Rc3 Rb5 45. Rxe3 Rxh5 46. Rxe6 Rg5 47. Re2 Kg6 48. Kc2 Kf5 49. Kc3 Rg4
50. a3 g5 51. b4 h5 52. Kb3 h4 53. a4 Re4 54. Rxe4 Kxe4 55. b5 Kd5 56. bxa6
Kc6 57. Kc4 g4 58. a5 h3 59. gxh3 gxh3 60. b3 h2 61. b4 h1=Q 62. b5+
{White resigns} 0-1
Which program will find that 54.Rxe4?? is losing immediately?
8/8/p7/5kp1/PP2r2p/1K6/1P2R1P1/8 w - -

Best regards,
George

The Baron on P3-500:

 ply       time        nodes   score  pv
  5(14)&   0:00.08     11723   +0.91  Re2xe4 Kf5xe4 a4-a5 Ke4-d5 Kb3-c3 g5-g4
                                      Kc3-d3 h4-h3
  5(14).   0:00.11     14718   +0.91  Re2xe4 Kf5xe4 a4-a5 Ke4-d5 Kb3-c3 g5-g4
                                      Kc3-d3 h4-h3
  6(16)&   0:00.19     28177   +1.02  Re2xe4 Kf5xe4 b4-b5 a6xb5 a4xb5 g5-g4
                                      b5-b6 h4-h3 g2xh3 g4xh3 b6-b7 h3-h2
                                      b7-b8Q
  6(16).   0:00.28     37349   +1.02  Re2xe4 Kf5xe4 b4-b5 a6xb5 a4xb5 g5-g4
                                      b5-b6 h4-h3 g2xh3 g4xh3 b6-b7 h3-h2
                                      b7-b8Q
  7(19)&   0:00.52     75398   +0.86  Re2xe4 Kf5xe4 Kb3-c4 g5-g4 b4-b5 a6-a5
                                      b5-b6 h4-h3 g2xh3 g4xh3 b6-b7 h3-h2
                                      b7-b8Q
  7(20).   0:01.06    139411   +0.86  Re2xe4 Kf5xe4 Kb3-c4 g5-g4 b4-b5 a6-a5
                                      b5-b6 h4-h3 g2xh3 g4xh3 b6-b7 h3-h2
                                      b7-b8Q
  8(22)&   0:01.61    226711   +1.15  Re2xe4 Kf5xe4 b4-b5 a6xb5 a4xb5 Ke4-d5
                                      Kb3-b4 g5-g4 b5-b6 h4-h3 g2xh3 g4xh3
                                      b6-b7 h3-h2 b7-b8Q
  8(22).   0:02.07    282625   +1.15  Re2xe4 Kf5xe4 b4-b5 a6xb5 a4xb5 Ke4-d5
                                      Kb3-b4 g5-g4 b5-b6 h4-h3 g2xh3 g4xh3
                                      b6-b7 h3-h2 b7-b8Q
  9(22)&   0:02.89    409636   +0.86  Re2xe4 Kf5xe4 b4-b5 a6xb5 a4xb5 Ke4-d5
                                      b5-b6 Kd5-c6 Kb3-c4 g5-g4 b2-b4 Kc6xb6
                                      b4-b5 h4-h3
  9(27).   0:11.50   1505548   +0.86  Re2xe4 Kf5xe4 b4-b5 a6xb5 a4xb5 Ke4-d5
                                      b5-b6 Kd5-c6 Kb3-c4 g5-g4 b2-b4 Kc6xb6
                                      b4-b5 h4-h3
 10(29)>   0:15.23   2003577   +0.52  Re2-f2
 10(30)&   0:38.52   4798964   +0.83  Re2-f2 Kf5-g6 b4-b5 a6xb5 a4xb5 g5-g4
                                      Kb3-c3 h4-h3 g2xh3 g4xh3 b5-b6 Re4-e3
                                      Kc3-c4 Re3-e4 Kc4-c5 Kg6-g5
 10(30).   0:39.97   4978632   +0.83  Re2-f2 Kf5-g6 b4-b5 a6xb5 a4xb5 g5-g4
                                      Kb3-c3 h4-h3 g2xh3 g4xh3 b5-b6 Re4-e3
                                      Kc3-c4 Re3-e4 Kc4-c5 Kg6-g5
 11(32)-   1:06.83   8408531   +0.48  Re2-f2 Kf5-g4 Rf2-c2 Kg4-g3 b4-b5 a6xb5
                                      a4xb5 g5-g4 Kb3-a3 h4-h3 g2xh3 g4xh3
                                      Rc2-c3
 11(33)&   1:20.11  10090095   +0.26  Re2-f2 Kf5-g4 b4-b5 a6xb5 a4xb5 Kg4-g3
                                      Rf2-d2 g5-g4 b5-b6 Re4-e6 b6-b7 Re6-b6
                                      Kb3-c4 h4-h3 b7-b8R
 11(33)>   1:28.32  11144177   +0.27  Re2-c2
 11(34)&   2:06.77  15645935   +0.31  Re2-c2 g5-g4 b4-b5 a6xb5 a4xb5 h4-h3
                                      Rc2-f2 Kf5-g5 g2xh3 g4xh3 Kb3-c3 Kg5-g4
                                      Kc3-d3 Re4-b4
 11(34)>   2:15.70  16730775   +0.32  Re2-d2
 11(34)&   2:17.44  16949558   +0.32  Re2-d2 g5-g4 b4-b5 a6xb5 a4xb5 h4-h3
                                      g2xh3 g4xh3 Kb3-c3 Kf5-f4 b5-b6 Re4-e3
                                      Kc3-d4 Kf4-f3
 11(34).   2:18.29  17053721   +0.32  Re2-d2 g5-g4 b4-b5 a6xb5 a4xb5 h4-h3
                                      g2xh3 g4xh3 Kb3-c3 Kf5-f4 b5-b6 Re4-e3
                                      Kc3-d4 Kf4-f3
 12(35)&   2:47.47  20520663   +0.34  Re2-d2 g5-g4 b4-b5 a6xb5 a4xb5 h4-h3
                                      Rd2-f2 Kf5-g5 g2xh3 g4xh3 Kb3-c3 Kg5-g4
                                      b5-b6 Kg4-g3 b6-b7 Re4-e3 Kc3-d4
 12(35).   3:15.22  24050554   +0.34  Re2-d2 g5-g4 b4-b5 a6xb5 a4xb5 h4-h3
                                      Rd2-f2 Kf5-g5 g2xh3 g4xh3 Kb3-c3 Kg5-g4
                                      b5-b6 Kg4-g3 b6-b7 Re4-e3 Kc3-d4

After forcing Rxe4 (and cleared the hash):

 ply       time        nodes   score  pv
  6(13).   0:00.08     11789   -2.06  Kf5xe4 b4-b5 a6xb5 a4xb5 Ke4-d5 b5-b6
                                      Kd5-c6
  7(11)+   0:00.09     13777   -1.69  Kf5xe4 b4-b5 a6xb5 a4xb5 Ke4-d5 Kb3-c3
                                      Kd5-c5
  7(11)&   0:00.10     14988   -1.67  Kf5xe4 b4-b5 a6xb5 a4xb5 Ke4-d5 Kb3-c3
                                      Kd5-c5
  7(17).   0:00.19     29625   -1.67  Kf5xe4 b4-b5 a6xb5 a4xb5 Ke4-d5 Kb3-c3
                                      Kd5-c5
  8(14)+   0:00.23     35065   -1.28  Kf5xe4 b4-b5 a6xb5 a4xb5 g5-g4 Kb3-c2
                                      h4-h3 Kc2-b1
  8(14)&   0:00.27     42148   -0.79  Kf5xe4 a4-a5 Ke4-d5 Kb3-a4 Kd5-c6 Ka4-a3
                                      g5-g4 Ka3-b3
  8(19).   0:00.46     71458   -0.79  Kf5xe4 a4-a5 Ke4-d5 Kb3-a4 Kd5-c6 Ka4-a3
                                      g5-g4 Ka3-b3
  9(16)&   0:00.61     95053   -1.02  Kf5xe4 b4-b5 a6xb5 a4xb5 g5-g4 b5-b6
                                      h4-h3 g2xh3 g4xh3 b6-b7 h3-h2 b7-b8Q
  9(22).   0:00.97    153017   -1.02  Kf5xe4 b4-b5 a6xb5 a4xb5 g5-g4 b5-b6
                                      h4-h3 g2xh3 g4xh3 b6-b7 h3-h2 b7-b8Q
 10(19)&   0:01.31    204208   -1.04  Kf5xe4 Kb3-c4 g5-g4 b4-b5 a6-a5 b5-b6
                                      h4-h3 g2xh3 g4xh3 b6-b7 h3-h2 b2-b4
                                      h2-h1Q
 10(25).   0:02.02    316445   -1.04  Kf5xe4 Kb3-c4 g5-g4 b4-b5 a6-a5 b5-b6
                                      h4-h3 g2xh3 g4xh3 b6-b7 h3-h2 b2-b4
                                      h2-h1Q
 11(27)&   0:02.68    420968   -0.84  Kf5xe4 b4-b5 a6xb5 a4xb5 Ke4-d5 b5-b6
                                      Kd5-c6 Kb3-c4 Kc6xb6 b2-b4 g5-g4 Kc4-d4
 11(27).   0:03.81    601655   -0.84  Kf5xe4 b4-b5 a6xb5 a4xb5 Ke4-d5 b5-b6
                                      Kd5-c6 Kb3-c4 Kc6xb6 b2-b4 g5-g4 Kc4-d4
 12(27)+   0:04.61    724564   -0.49  Kf5xe4 b4-b5 a6xb5 a4xb5 Ke4-d5 b5-b6
                                      Kd5-c6 Kb3-c4 g5-g4 Kc4-d3 Kc6xb6 b2-b3
 12(27)+   0:04.84    763766   +0.41  Kf5xe4 b4-b5 a6xb5 a4xb5 Ke4-d5 Kb3-c2
                                      g5-g4 Kc2-d3 h4-h3 Kd3-e3 h3xg2 Ke3-f2
                                      g2-g1Q Kf2xg1
 12(28)&   0:05.76    892174   +1.40  Kf5xe4 b4-b5 a6xb5 a4-a5 Ke4-d5 a5-a6
                                      Kd5-c6 Kb3-c3 Kc6-b6 a6-a7 Kb6xa7 Kc3-b4
                                      g5-g4 b2-b3 h4-h3 Kb4-a5
 12(29).   0:07.96   1242268   +1.40  Kf5xe4 b4-b5 a6xb5 a4-a5 Ke4-d5 a5-a6
                                      Kd5-c6 Kb3-c3 Kc6-b6 a6-a7 Kb6xa7 Kc3-b4
                                      g5-g4 b2-b3 h4-h3 Kb4-a5
 13(32)+   0:10.60   1590166   +1.75  Kf5xe4 b4-b5 a6xb5 a4-a5 Ke4-d5 a5-a6
                                      Kd5-c6 Kb3-c2 g5-g4 a6-a7 Kc6-b7 Kc2-b1
                      &nbs

[Will Singleton]

Geschrieben von: / Posted by: Will Singleton at 16 January 2004 20:40:28:
Als Antwort auf: / In reply to: Interesting endgame geschrieben von: / posted by: Lyapko George at 16 January 2004 12:05:06:

My results are similar to Richard's, though his times are better. Yace is good here. This is a good position to code for, thanks for posting. btw, League C was tough!
Will

[Dann Corbit]

Geschrieben von: / Posted by: Dann Corbit at 16 January 2004 22:09:56:
Als Antwort auf: / In reply to: Interesting endgame geschrieben von: / posted by: Lyapko George at 16 January 2004 12:05:06:

This link is dead:
http://www.geocities.com/lyapko/lg0309ñ.zip



my ftp site {remove http:// unless you like error messages}

[Dann Corbit]

Geschrieben von: / Posted by: Dann Corbit at 17 January 2004 03:52:26:
Als Antwort auf: / In reply to: Ever seen a grown man cry? geschrieben von: / posted by: Dann Corbit at 16 January 2004 22:09:56:

This link is dead:
http://www.geocities.com/lyapko/lg0309ñ.zip

The correct link is:
http://www.geocities.com/lyapko/lg0309c.zip
(I found it by educated guess)


my ftp site {remove http:// unless you like error messages}