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Up Topic The Rybka Lounge / Computer Chess / Pseudo-blockade: Houdini6-D50=15 wins!! Stockfish loses??
- By MrKris (**) Date 2019-04-26 08:34
From http://talkchess.com/forum3/viewtopic.php?f=2&t=70587

Stockfish can not find the win in 600 seconds:
[Event "Talkchess.com"]
[Site "acase ; amd phII 6cpu"]
[Date "2019.04.26"]
[Round "?"]
[White "Stockfish_19042419"]
[Black "move/10 mins."]
[Result "*"]
[BlackElo "2000"]
[Time "19:18:35"]
[WhiteElo "2000"]
[TimeControl "0+600"]
[SetUp "1"]
[FEN "3r4/3r4/2p1k3/p1pbPp1p/Pp1p1PpP/1P1P2R1/2P4R/2K1Q3 w - - 0 6"]
[Termination "unterminated"]
[PlyCount "1"]
[WhiteType "program"]
[BlackType "human"]

{'3r4/3r4/2p1k3/p1pbPp1p/Pp1p1PpP/1P1P2R1/2P4R/2K1Q3 w - - 0 6'} 6. Rd2 {+7.51/63 600}

( {endless shuffling 7.51 eval. unchanged from the start} 6.Rd2 Re7 7.Rg1 Rde8 8.Rf1 Kf7 9.Qe2 Rd8 10.Qf2 Rde8 11.Qh2 Re6 12.Kd1 R6e7
13.Rg1 Rd7 14.Ke1 Rde7 15.Qe2 Rd8 16.Kf2 Ke6 17.Re1 Rde8 18.Rf1 Bf3 19.Qe1 Bd5
20.Kg3 Kd7 21.Qe2 Kc7 22.Rg1 Kb7 23.Qe1 Re6 24.Qf2 Rd8 25.Qe2 Rd7 26.Re1 Kc7
27.Qh2 Kb7 28.Kf2 Kc7 29.Rg1 Kb6 30.Kg3 Kb7 31.Re1 Rd8 32.Rf1 Rde8 33.Qf2 Kb6
34.Re1 Kc7 35.Qe2 R6e7 36.Rf1 Kb6 37.Qh2 Kb7 )

*

Houdini 6.03, with FiftyMoveDistance = 15 (default 50), plays the win in 38 seconds:
{At the link at top: Lc0 finds at depth 12, 3 mins. 43 secs.}
[Event "UNblockade1Rxg4"]
[Site "G/12'+2'' amdphIIx6 Sy6 6cpu"]
[Date "2019.04.25"]
[Round "1"]
[White "Houdini 6.03 standard"]
[Black "Komodo-11.2.2-64bit"]
[Result "1-0"]
[BlackElo "2200"]
[Time "23:12:50"]
[WhiteElo "2200"]
[TimeControl "720+2"]
[SetUp "1"]
[FEN "3r4/3r4/2p1k3/p1pbPp1p/Pp1p1PpP/1P1P2R1/2P4R/2K1Q3 w - - 0 6"]
[Termination "adjudication"]
[PlyCount "41"]
[WhiteType "human"]
[BlackType "human"]

6. Rxg4 {+3.82/29 38, !!} hxg4 {-4.07/32 13} 7. h5 {+4.13/29 7} Rh7 {-4.63/33
22} 8. Qh4 {+4.69/31 8} Kd7 {-4.89/35 11} 9. Qf6 {+4.98/31 8} Be6 {-5.65/37
78} 10. h6 {+5.24/33 11} g3 {-5.65/36 7} 11. Rg2 {+7.28/25 9} Rg8 {-7.65/28
12} 12. Kb2 {+8.25/23 9} c4 {-8.54/31 18} 13. dxc4 {+8.87/22 3} d3
{-9.94/29 37} 14. cxd3 {+9.80/25 11} c5 {-10.87/30 44} 15. Kc1 {+10.21/24
5} Rg4 {-12.02/29 27} 16. Qf8 {+11.67/23 12} Rg6 {-12.08/28 8} 17. Qd6+
{+11.97/20 2} Ke8 {-12.22/27 8} 18. Rxg3 {+13.27/23 19} Rgxh6 {-13.13/27
22} 19. Qxc5 {+14.49/23 10} Rh1+ {-14.02/27 20} 20. Kd2 {+16.89/24 15}
R1h2+ {-15.90/27 19} 21. Ke3 {+19.26/25 15} R2h6 {-17.94/27 21} 22. Qxa5
{+89.48/26 13} Rh3 {-21.58/28 50} 23. Qa8+ {+148.74/35 19} Ke7 {-23.90/25
8} 24. Qb7+ {+148.77/31 5} Bd7 {-24.31/25 14} 25. Qxb4+ {+M26/36 12} Kf7
{-250.00/24 3} 26. Rxh3 {+M24/41 3  User Adjudication} 1-0


Stockfish can not win with the same T.C.: [Event "UNblockade1Rxg4"]
[Site "Arena"]
[Date "2019.04.25"]
[Round "2"]
[White "Stockfish_19042419"]
[Black "Komodo-11.2.2-64bit"]
[Result "1/2-1/2"]
[BlackElo "2200"]
[Time "23:45:48"]
[WhiteElo "2200"]
[TimeControl "720+2"]
[SetUp "1"]
[FEN "3r4/3r4/2p1k3/p1pbPp1p/Pp1p1PpP/1P1P2R1/2P4R/2K1Q3 w - - 0 6"]
[Termination "adjudication"]
[PlyCount "119"]
[WhiteType "human"]
[BlackType "human"]

6. Rd2 {+7.47/48 15} Re7 {-5.17/44 19} 7. Kb2 {+7.47/48 9} Rg8 {-5.00/41
13} 8. Rf2 {+7.47/46 6} Ree8 {-5.00/41 36} 9. Qd2 {+7.47/46 8} Rg6
{-4.99/43 70} 10. Qe1 {+7.47/46 8} Re7 {-4.79/40 10} 11. Rh2 {+7.47/48 8}
Rg8 {-4.80/41 7} 12. Re2 {+7.47/47 8} Rgg7 {-4.80/42 64} 13. Qf2 {+7.47/48
8} Rg8 {-4.80/38 6} 14. Re1 {+7.47/47 10} Rg6 {-4.53/40 15} 15. Ra1
{+7.47/47 9} Kd7 {-4.09/37 5} 16. Qe1 {+7.47/46 16} Be6 {-3.99/39 7} 17.
Qe2 {+7.47/44 8} Rg8 {-3.86/42 11} 18. Re1 {+7.47/47 9} Rge8 {-3.63/43 28}
19. Qf2 {+7.47/49 10} Kc7 {-3.73/42 7} 20. Qd2 {+7.47/47 8} Rg8 {-3.71/44
7} 21. Qf2 {+7.47/49 11} Ra8 {-3.31/45 54} 22. Qg2 {+7.47/49 9} Bd5
{-2.99/42 18} 23. Qd2 {+7.47/47 10} Re6 {-2.93/44 35} 24. Qd1 {+7.47/48 10}
Rg8 {-2.87/36 8} 25. Rf1 {+7.47/48 9} Kd7 {-2.87/38 8} 26. Rf2 {+7.47/48
11} Rf8 {-2.87/42 9} 27. Qe2 {+7.47/50 11} Rh8 {-2.73/44 44} 28. Qd2
{+7.47/50 10} Ke7 {-2.81/39 5} 29. Re2 {+7.47/46 9} Kd7 {-2.42/36 18} 30.
Rh2 {+7.47/48 10} Rg8 {-2.42/40 6} 31. Re2 {+7.47/50 11} Rge8 {-2.42/38 11}
32. Qe1 {+7.47/49 10} Kc7 {-2.42/37 6} 33. Qf2 {+7.47/50 12} Rd8 {-2.41/37
9} 34. Rg1 {+7.47/49 11} Kb6 {-2.41/37 4} 35. Rge1 {+7.47/49 11} Bf3
{-2.41/35 5} 36. Rd2 {+7.47/48 10} Rh8 {-2.41/37 4} 37. Ra1 {+7.47/48 10}
Rg8 {-2.27/38 42} 38. Qg3 {+4.46/43 140} Bd5 {-2.24/36 7} 39. Kc1 {+4.69/36
25} Rh8 {-2.24/41 9} 40. Kd1 {+4.74/38 10} Rhe8 {-2.30/36 5} 41. Qf2
{+4.74/34 6} Rb8 {-2.38/34 5} 42. Qg3 {+4.21/38 55} Kc7 {-2.21/38 15} 43.
Rf2 {+4.21/33 33} Rb7 {-2.14/35 7} 44. Rd2 {+4.18/33 12} Rb8 {-2.14/35 4}
45. Qg1 {+4.18/30 10} Kb6 {-2.12/33 5} 46. Ke1 {+4.16/28 7} Bf3 {-2.09/34
3} 47. Rb1 {+4.07/30 25} Bd5 {-2.08/33 3} 48. Kd1 {+3.93/31 17} Rbe8
{-2.08/33 4} 49. Kc1 {+3.93/25 4} Rg8 {-2.08/35 3} 50. Re2 {+3.93/33 9} Rb8
{-2.08/34 7} 51. Kd2 {+3.93/33 4} Rg8 {-2.08/36 7} 52. Ke1 {+3.93/38 12}
Rb8 {-2.06/32 6} 53. Kf2 {+3.93/37 4} Kc7 {-2.02/35 4} 54. Qf1 {+3.93/38 5}
Bf3 {-2.02/30 9} 55. c4 {+3.93/40 6} bxc3 {-2.02/34 5} 56. Ra2 {+3.93/41 4}
Rb4 {-1.83/28 10} 57. Qe1 {+3.05/37 46} Bd5 {-1.83/31 12} 58. Rc2 {+3.03/35
12} Kb6 {-1.80/32 10} 59. Rcc1 {+3.03/32 1} Re8 {-1.75/27 2} 60. Qf1
{+2.84/36 21} Be6 {-1.75/30 17} 61. Qe2 {+2.78/38 2} Kc7 {-1.69/30 4} 62.
Qa2 {+2.78/38 2} Bd5 {-1.69/30 4} 63. Kg3 {+2.78/36 4} Be6 {-1.68/32 8} 64.
Qa3 {+2.78/36 2} Rg8 {-1.68/31 3} 65. Rg1 {+2.78/35 2  User Adjudication}
1/2-1/2


White misses the win but Stockfish breaks its own blockade with 14...g3?? to lose anyway: [Event "UNblockade1Rxg4"]
[Site "G/12'+2'' amdphIIx6 Sy6 6cpu"]
[Date "2019.04.25"]
[Round "1"]
[White "Komodo-11.2.2-64bit"]
[Black "Stockfish_19042419"]
[Result "1-0"]
[BlackElo "2200"]
[Time "22:54:02"]
[WhiteElo "2200"]
[TimeControl "720+2"]
[SetUp "1"]
[FEN "3r4/3r4/2p1k3/p1pbPp1p/Pp1p1PpP/1P1P2R1/2P4R/2K1Q3 w - - 0 6"]
[Termination "adjudication"]
[PlyCount "50"]
[WhiteType "human"]
[BlackType "human"]

6. Re2 {+5.36/38 13} Re8 {-7.18/48 16} 7. Qf2 {+5.37/43 14} Rg7 {-7.18/46
8} 8. Kd2 {+5.37/41 8} Rg6 {-7.18/48 9} 9. Kc1 {+5.26/39 35} Re7 {-7.18/45
7} 10. Rg1 {+5.20/39 11} Rh6 {-7.19/45 9} 11. Kb2 {+5.20/39 13} Rg7
{-7.19/47 8} 12. Ree1 {+4.97/38 13} Rhg6 {-7.19/48 9} 13. Qd2 {+4.97/43 25}
Rg8 {-7.18/39 12} 14. Qh2 {+4.97/38 13} g3 {-6.66/35 8 ??} 15. Qe2
{+5.53/31 7} Rg4 {-8.61/36 72} 16. Rg2 {+6.41/29 8} R8g6 {-8.63/33 13} 17.
Reg1 {+6.56/32 10} Bxg2 {-8.94/32 19} 18. Rxg2 {+7.36/32 42} Kf7 {-8.87/33
9} 19. Qf3 {+7.34/31 10} Kf8 {-9.27/35 70} 20. e6 {+7.30/30 6} Rxe6
{-9.17/29 6} 21. Rxg3 {+7.57/30 50} Re3 {-9.62/35 76} 22. Qxc6 {+8.26/29
29} Rgxg3 {-9.77/30 10} 23. Qxc5+ {+8.36/28 15} Kf7 {-9.72/28 15} 24. Qxa5
{+8.49/27 15} Re1 {-10.02/33 18} 25. Qxb4 {+9.10/26 21} Rgg1 {-11.07/27 22}
26. Qxd4 {+9.16/26 5} Ra1 {-12.30/30 53} 27. Qd5+ {+9.65/23 7} Ke7
{-14.25/31 81} 28. Qxf5 {+10.51/24 15} Rab1+ {-14.25/24 5} 29. Kc3
{+11.26/24 11} Rg7 {-16.46/27 55} 30. a5 {+15.58/25 13} Ra1 {-19.76/28 50
User Adjudication} 1-0
- By MrKris (**) Date 2019-04-26 09:02 Edited 2019-04-27 07:13
Stockfish misses the win, Houdini holds easily but can not say 0.00 (for Arena's drawscore) even when it plays the 50th move of the 50-move rule: [Event "UNblockade1Rxg4"]
[Site "G/12'+2'' amdphIIx6 Sy6 6cpu"]
[Date "2019.04.25"]
[Round "1"]
[White "Stockfish_19042419"]
[Black "Houdini 6.03 standard"]
[Result "1/2-1/2"]
[BlackElo "2200"]
[Time "22:27:06"]
[WhiteElo "2200"]
[TimeControl "720+2"]
[SetUp "1"]
[FEN "3r4/3r4/2p1k3/p1pbPp1p/Pp1p1PpP/1P1P2R1/2P4R/2K1Q3 w - - 0 6"]
[Termination "normal"]
[PlyCount "100"]
[WhiteType "human"]
[BlackType "human"]

{'3r4/3r4/2p1k3/p1pbPp1p/Pp1p1PpP/1P1P2R1/2P4R/2K1Q3 w - - 0 6'} 6. Kb2 {+7.50/47 15} Re7 {-2.72/18 26} 7. Re2 {+7.50/46 7} Rg8 {-2.51/26
10} 8. Qd2 {+7.50/45 9} Rc8 {-2.11/26 13} 9. Qc1 {+7.50/47 7} Ra8 {-1.76/27
13} 10. Re1 {+7.50/46 7} Rf8 {-2.25/27 27} 11. Qd2 {+7.50/47 12} Rb8
{-2.26/29 45} 12. Qf2 {+7.50/48 9} Rg8 {-2.06/28 78} 13. Qe2 {+7.50/47 7}
Rc7 {-2.10/28 31} 14. Reg1 {+7.50/47 7} Rb7 {-2.31/28 31} 15. Qd2 {+7.50/49
8} Rh8 {-1.89/27 9} 16. Rc1 {+7.50/49 8} Rg8 {-2.75/29 83} 17. Rgg1
{+7.50/48 11} Re8 {-2.52/26 31} 18. Rg3 {+7.50/48 9} Rg8 {-0.06/65 9} 19.
Qe1 {+7.50/50 8} Rh8 {-2.69/28 22} 20. Qf2 {+7.50/50 9} Rd7 {-2.66/26 13}
21. Rgg1 {+7.50/47 9} Rb7 {-2.22/23 7} 22. Rb1 {+7.50/50 16} Rd7 {-2.17/26
14} 23. Qg3 {+7.50/49 10} Rb7 {-1.43/27 43} 24. Qf2 {+7.50/51 9} Rd7
{-0.06/65 17} 25. Rbf1 {+7.50/50 11} Rb7 {-2.64/28 34} 26. Ra1 {+7.50/49
11} Rf8 {-1.91/24 7} 27. Rae1 {+7.50/49 10} Rh8 {-2.63/28 48} 28. Rgf1
{+7.50/51 10} Rc8 {-2.15/26 7} 29. Re2 {+7.50/47 11} Rd8 {-2.17/29 14} 30.
Qg3 {+7.50/48 9} Rf8 {-1.66/22 4} 31. Rd2 {+7.50/47 10} Rfb8 {-0.67/23 4}
32. Qg1 {+7.50/50 10} Rf8 {-1.58/25 17} 33. Rc1 {+7.50/48 10} Rg8 {-1.48/24
7} 34. Qg3 {+7.50/50 22} Rd8 {-0.73/24 6} 35. Rg1 {+7.50/45 15} Rh7
{-1.09/27 23} 36. Rb1 {+7.50/46 10} Rg8 {-1.01/24 5} 37. Rbd1 {+7.50/46 10}
Rf7 {-0.23/22 4} 38. Rf2 {+7.50/45 10} Ra8 {-0.40/27 17} 39. Rg1 {+7.50/44
11} Rb8 {-0.78/29 9} 40. Rc1 {+7.50/40 9} Rd7 {-0.71/23 3} 41. Rff1
{+7.50/42 9} Rdb7 {-1.89/22 12} 42. Rfe1 {+7.50/40 10} Rd7 {-1.95/25 8} 43.
Qh2 {+7.50/38 14} Rc8 {-2.13/25 17} 44. Rcd1 {+7.41/34 32} Rb8 {-1.57/20 2}
45. Qg3 {+7.41/26 6} Rg8 {-1.61/25 11} 46. Ra1 {+7.50/28 48} Bf3 {-1.60/24
4} 47. Rg1 {+7.48/24 23} Bd5 {-1.96/22 4} 48. Rac1 {+7.40/28 17} Rb7
{-2.39/22 2} 49. Qh2 {+7.50/25 22} Rf8 {-2.26/22 1} 50. Qg3 {+4.27/34 88}
Rg8 {-0.06/53 1} 51. Qf2 {+4.28/32 39} Rh8 {-0.06/53 2} 52. Qd2 {+3.86/31
23} Re8 {-0.06/63 1} 53. Rgf1 {+4.21/26 3} Rg8 {-0.06/29 1} 54. Qf2
{0.00/31 22} Rgb8 {-0.06/29 1} 55. Rh1 {0.00/43 12} Rg8 {50 -0.06/53 1 50
moves rule} 1/2-1/2


Houdini again won as white, Arena restarted per game in the tournament: [Event "UNblockade1Rxg4"]
[Site "G/12'+2'' amdphIIx6 Sy6 6cpu"]
[Date "2019.04.25"]
[Round "2"]
[White "Houdini 6.03 standard"]
[Black "Stockfish_19042419"]
[Result "1-0"]
[BlackElo "2200"]
[Time "23:24:56"]
[WhiteElo "2200"]
[TimeControl "720+2"]
[SetUp "1"]
[FEN "3r4/3r4/2p1k3/p1pbPp1p/Pp1p1PpP/1P1P2R1/2P4R/2K1Q3 w - - 0 6"]
[Termination "adjudication"]
[PlyCount "65"]
[WhiteType "human"]
[BlackType "human"]

6. Rxg4 {+3.94/27 25} hxg4 {-6.00/29 18} 7. h5 {+4.36/25 7} Rh8 {-7.23/35
55} 8. Qh4 {+4.78/27 8} Rf7 {-7.48/36 12} 9. Qg5 {+5.09/27 8} Kd7 {-7.51/34
10} 10. Qg6 {+5.31/27 8} Kc7 {-7.72/35 35} 11. Re2 {+5.53/27 11} Rff8
{-6.41/28 12} 12. Re1 {+5.53/26 2} Rhg8 {-7.81/35 59} 13. Qd6+ {+5.63/28
10} Kb6 {-8.00/35 9} 14. e6 {+6.09/29 10} Rd8 {-8.39/34 36} 15. Qe5
{+6.19/27 2} Rde8 {-8.72/33 34} 16. e7 {+6.59/28 11} g3 {-8.87/32 16} 17.
Qd6 {+6.86/29 10} g2 {-8.87/34 9} 18. Rg1 {+7.26/28 13} Rh8 {-9.11/34 38}
19. Kd1 {+7.50/28 11} Ka6 {-9.30/33 56} 20. Qd7 {+7.92/28 17} Kb6 {-9.49/32
18} 21. h6 {+8.52/25 11} Reg8 {-9.39/26 4} 22. Kd2 {+8.72/27 11} Ka6
{-9.73/32 37} 23. h7 {+9.59/26 11} Re8 {-10.07/36 51} 24. Ke2 {+10.97/26
18} Kb6 {-10.05/33 22} 25. Kf2 {+12.04/26 13} Bf7 {-10.87/28 11} 26. Qxf5
{+13.12/26 16} Bg6 {-13.59/31 64} 27. Qxg6 {+14.76/25 13} Rxe7 {-14.25/30
7} 28. Rxg2 {+15.31/23 3} Rhxh7 {-15.90/32 28} 29. Qd6 {+18.04/25 11} Rd7
{-18.73/31 20} 30. Qb8+ {+84.60/25 14} Rb7 {-20.82/31 11} 31. Qd8+
{+88.68/32 8} Rbc7 {-56.37/32 22} 32. Rg5 {+98.68/32 43} Rh2+ {-58.61/37 8}
33. Kf3 {+99.00/33 11} Rh3+ {-19.14/36 6} 34. Kg2 {+148.78/35 32} Rh7
{-16.27/33 2} 35. Qb8+ {+148.79/32 3} Rb7 {-65.91/37 33} 36. Qd6 {+M25/36
40} Rbc7 {-72.25/36 8} 37. Qxc5+ {+M22/40 14} Kb7 {-74.73/37 13} 38. Qxa5
{+M21/42 3  User Adjudication} 1-0


Komodo does not know how to win but knows how to reset the 50-move rule, 52.c4: [Event "UNblockade1Rxg4"]
[Site "G/12'+2'' amdphIIx6 Sy6 6cpu"]
[Date "2019.04.26"]
[Round "2"]
[White "Komodo-11.2.2-64bit"]
[Black "Houdini 6.03 standard"]
[Result "1/2-1/2"]
[BlackElo "2200"]
[Time "00:13:29"]
[WhiteElo "2200"]
[TimeControl "720+2"]
[SetUp "1"]
[FEN "3r4/3r4/2p1k3/p1pbPp1p/Pp1p1PpP/1P1P2R1/2P4R/2K1Q3 w - - 0 6"]
[Termination "adjudication"]
[PlyCount "176"]
[WhiteType "human"]
[BlackType "human"]

6. Rg1 {+5.32/40 15} Re7 {-2.92/19 23} 7. Kd2 {+5.33/42 15} Rg7 {-2.30/20
7} 8. Qg3 {+5.27/42 32} Re7 {-1.87/26 45} 9. Rf2 {+5.27/42 60} Rg8
{-1.81/28 39} 10. Rff1 {+5.27/46 20} Reg7 {-2.42/28 26} 11. Rf2 {+5.27/39
7} Re7 {-0.06/89 15} 12. Rff1 {+5.03/43 39} Reg7 {-0.06/87 16} 13. Re1
{+4.97/43 25} Re8 {-2.57/29 85} 14. Rgf1 {+4.96/46 104} Rd8 {-1.89/26 12}
15. Rg1 {+4.77/43 23} Re8 {-0.06/80 10} 16. Ra1 {+4.77/44 20} Rb8 {-1.71/27
106} 17. Rab1 {+4.77/46 18} Rb6 {-2.22/27 39} 18. Rge1 {+4.77/48 8} Rb8
{-1.37/24 14} 19. Rg1 {+3.94/39 45} Rb6 {-0.06/54 28} 20. Rbe1 {+3.94/43 7}
Rb8 {-2.04/27 28} 21. Kc1 {+3.95/43 57} Rf8 {-2.63/29 48} 22. Ref1
{+3.96/43 7} Rb8 {-2.51/26 26} 23. Kb2 {+3.96/45 41} Rd7 {-2.65/27 18} 24.
Rd1 {+3.96/39 3} Rg7 {-2.54/26 22} 25. Rde1 {+3.44/42 7} Rbg8 {-2.11/26 7}
26. Qf2 {+3.39/37 9} Rb7 {-2.75/27 25} 27. Ref1 {+3.36/37 20} Re8 {-2.60/25
5} 28. Rd1 {+3.30/41 58} Rf7 {-2.42/27 51} 29. Qg3 {+2.95/38 15} Rd7
{-2.14/24 9} 30. Rde1 {+2.95/41 6} Rg8 {-1.40/22 3} 31. Rgf1 {+2.75/39 4}
Rc7 {-1.99/25 11} 32. Rg1 {+2.75/36 2} Rd7 {-0.06/59 6} 33. Re2 {+2.75/39
3} Rb7 {-1.68/25 17} 34. Kc1 {+2.32/36 17} Rf8 {-1.70/25 9} 35. Kd2
{+2.32/37 6} Rbb8 {-1.25/21 3} 36. Ree1 {+2.30/40 11} Rb7 {-1.69/26 9} 37.
Re2 {+2.30/37 2} Rbb8 {-0.06/54 4} 38. Qe1 {+2.30/33 1} Rb7 {-1.43/22 9}
39. Qb1 {+2.13/36 34} Rd8 {-0.88/21 2} 40. Ke1 {+2.12/31 1} Rg7 {-1.79/24
4} 41. Qa1 {+2.05/32 4} Rb8 {-1.66/20} 42. Kf2 {+2.04/31 9} Bf3 {-1.62/21
1} 43. Ree1 {+2.16/27 6} Rd7 {-1.48/21 2} 44. Qb1 {+2.10/37 21} Bd5
{-1.32/23 1} 45. Qb2 {+2.01/26 1} Ra7 {-1.32/22 3} 46. Qa1 {+1.91/27 2} Rg7
{-1.23/21 1} 47. Qb1 {+1.86/26 1} Rd7 {-0.06/50} 48. Kg3 {+1.84/27} Rf7
{-1.45/24 3} 49. Re4 {+1.82/24} Rd8 {-1.76/22 2} 50. Qe1 {+1.82/24 1} Rdf8
{-1.86/23 1} 51. Re2 {+1.82/28 2} Rd8 {-1.78/23 1} 52. c4 {+1.71/28 3} bxc3
{-0.87/21} 53. Qa1 {+1.71/28} Rb8 {-0.59/22 1} 54. Qa3 {+1.31/27} Rb4
{-0.45/23 1} 55. Rb1 {+1.29/29 1} Rc7 {-0.39/25 3} 56. Rc2 {+1.28/29 1}
Rcb7 {-0.39/21} 57. Rf2 {+1.27/27 1} Rb8 {-0.35/23 1} 58. Rc2 {+1.27/30 2}
R8b7 {-0.06/30 1} 59. Rcc1 {+1.27/30 1} Bf3 {-0.08/21 4} 60. Kf2 {+1.27/31
2} Bd5 {-0.06/24 3} 61. Rg1 {+1.13/31 10} R7b6 {-0.06/26 1} 62. Rge1
{+0.96/26 1} Rb8 {-0.06/25 1} 63. Rg1 {+0.96/25 1} R8b7 {-0.06/25 2} 64.
Rgc1 {+0.96/26 1} Bf3 {-0.06/24 1} 65. Re1 {+0.82/25 2} Bd5 {-0.06/27 2}
66. Rec1 {+0.76/26 1} Bf3 {-0.06/28 1} 67. Re1 {+0.75/25 1} Bd5 {-0.06/31
1} 68. Kg3 {+0.72/26} Bf3 {-0.06/26 2} 69. Ra1 {+0.70/27} Bd5 {-0.06/28 2}
70. Rab1 {+0.70/26} Bf3 {-0.06/32 3} 71. Kh2 {+0.70/30 1} Bd5 {-0.06/27 1}
72. Re2 {+0.70/25 1} Bf3 {-0.06/25 1} 73. Rc2 {+0.70/25 1} Rd7 {-0.16/22 3}
74. Qa2 {+0.69/26 3} Rdb7 {-0.06/24} 75. Rcc1 {+0.60/26 3} Bd5 {-0.06/25 1}
76. Qa1 {+0.60/27 2} Rd7 {-0.06/25 2} 77. Qa3 {+0.49/25 2} Bf3 {-0.06/25}
78. Ra1 {+0.57/21 1} Rdb7 {-0.06/26 1} 79. Kg3 {+0.49/24 3} Be2 {-0.06/25
2} 80. Rd1 {+0.49/27} Bf3 {-0.06/25} 81. Re1 {+0.49/28} Bd5 {-0.06/33 3}
82. Reb1 {+0.49/26} Rg7 {-0.06/28 3} 83. Qc1 {+0.42/28 9} Bf3 {-0.06/28 2}
84. Ra3 {+0.72/26 1} Rgb7 {-0.06/27} 85. Qg1 {+0.66/27 1} Rg7 {-0.06/28 3}
86. Rc1 {+0.66/29 1} Rgb7 {-0.06/26} 87. Rb1 {+0.51/27 4} Rg7 {-0.06/29 1}
88. Rc1 {+0.30/26 1} Rgb7 {-0.06/30 2} 89. Rf1 {+0.30/28 1} Bd5 {-0.06/26
2} 90. Rb1 {+0.30/28} Re7 {-0.06/25 4} 91. Qh2 {+0.25/27 2} Rg7 {-0.06/26
1} 92. Qa2 {+0.23/27 1} Bf3 {-0.06/27 1} 93. Qf2 {+0.16/28 1} Rgb7
{-0.06/26 1  User Adjudication} 1/2-1/2
AMD PhII X6 6cpu, G/12'+2''
all games FEN: 3r4/3r4/2p1k3/p1pbPp1p/Pp1p1PpP/1P1P2R1/2P4R/2K1Q3 w - - 0 6
                         Score  Ho Ko St    S-B
1: Houdini6.03std D50=15 3.0/4  ·· 1= =1    4.50
2: Komodo-11.2.2-64bit   2.0/4  0= ·· 1=    3.00
3: Stockfish_19042419    1.0/4  =0 0= ··    2.50
- By MrKris (**) Date 2019-04-27 07:08
ThothFishv1.0 with MajicTacticSolver=ON (default off)
http://www.talkchess.com/forum3/viewtopic.php?f=2&t=70300
finds it instantly. (ThothFish 1.2 and 1.21 do not have the option, are as slow as other engines).

3r4/3r4/2p1k3/p1pbPp1p/Pp1p1PpP/1P1P2R1/2P4R/2K1Q3 w - - 0 6
FEN: 3r4/3r4/2p1k3/p1pbPp1p/Pp1p1PpP/1P1P2R1/2P4R/2K1Q3 w - - 0 6

ThothFishv1.0:
 1/1  00:00   211  70k  +29.52  6.Kd2
 2/2  00:00   606  202k  +65.13  6.Kd2 c4
 3/3  00:00   1k  492k  +24.38  6.Qxb4 cxb4 7.Kd2
...
 18/26  00:00   2,376k  7,494k   0.00  6.Kd2 Bf3 7.Qf1 Rf8 8.Ke1 Rdd8 9.Qxf3 Kd7 10.Qe2 Ke7 11.Kd1 Rc8 12.Rh1 Rcd8
 19/30  00:00   2,467k  7,476k  +1.30  6.Kd2 Bf3 7.Qf1 Rf8 8.Ke1 Rdd8 9.Qxf3 Kd7 10.e6+ Ke7 11.Qxc6 Ra8 12.Qxc5+ Kxe6 13.Re2+ Kf7 14.Re7+ Kg8 15.Qc4+ Kh8 16.Qxd4+ Rf6
 20/29  00:00   3,544k  7,446k  +2.23  6.Rxg4 hxg4 7.h5 Rf8 8.Qh4 Rh7 9.h6 Bf3 10.Qg5 Rhh8 11.Rh5 g3 12.Qg6+ Ke7 13.Rxf5 Rxf5
 21/28  00:00   3,665k  7,435k  +4.01  6.Rxg4 hxg4 7.h5 Rf8 8.Qh4 Rh7 9.h6 Bf3 10.Qg5 Rhh8 11.Rh5 g3 12.Qg6+ Ke7 13.Rxf5
 22/32  00:00   5,503k  7,477k  +5.73  6.Rxg4 hxg4 7.h5 Rf8 8.h6 Bf3 9.Qh4 Rdd8 10.Qg5 Kd7 11.h7 Kc7 12.Rh6 Kb6 13.h8Q Kb7 14.Qxd8
 23/36  00:02   15,561k  7,528k  +9.89  6.Rxg4 hxg4 7.h5 Rh7 8.h6 Kd7 9.Rh5 Be6 10.Qh4 Rf8 11.Rg5 Rg8 12.Qh5 Rxg5 13.fxg5 Re7 14.g6 Kc7 15.Qg5 Re8 16.h7 Bc8 17.Qf6 Kb7 18.Qf7+ Kb6 19.e6 g3 20.Qxe8 Kc7 21.Qf8 g2
...
 26/37+  00:07   53,555k  7,642k  +11.23  6.Rxg4
 26/37+  00:07   53,674k  7,639k  +12.02  6.Rxg4
 26/37-  00:07   53,774k  7,638k  +8.85  6.Rxg4 fxg4
 26/37  00:07   57,551k  7,659k  +8.85  6.Rxg4 fxg4

Up Topic The Rybka Lounge / Computer Chess / Pseudo-blockade: Houdini6-D50=15 wins!! Stockfish loses??

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