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Up Topic The Rybka Lounge / Computer Chess / Stockfish dev. @ PV=4 gauntlet
- By MrKris (**) Date 2019-07-30 06:24
G/12'+3" 6cpu, AMD PhII X6, Sy.6, 1G hash

The same 20 rare openings reversed all engines:
Stockfish PV=4
vs. Houdini 6.03 defailt pv=1
vs. Komodo 13.02 default pv=1
vs. KomodoMCTS 13.02 pv=4 (just to save unnecessary slight output time, it will do more with about the same results)

The event is still running, meanwhile a few games.

C25   Vienna: Steinitz Gambit
White sacrificed a knight for 2 pawns. During and after the game Stockfish says its equal, 0.00.
[Event "SfPV4-Ho-Ko-20rare"]
[Site "?"]
[Date "2019.07.28"]
[Round "9"]
[White "Stockfish_19072603s36-PV4"]
[Black "KomodoMCTS-13.02-pv4"]
[Result ""]
[BlackElo "2200"]
[ECO "C25"]
[Opening "Vienna"]
[Time "15:04:17"]
[Variation "Steinitz Gambit"]
[WhiteElo "2200"]
[TimeControl "720+3"]
[Termination "adjudication"]
[PlyCount "56"]
[WhiteType "human"]
[BlackType "human"]

1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. d4 Qh4+ {+0.28/17 14} 5. Ke2 {-0.37/22 8}
Qh5+ {+0.48/17 23} 6. Nf3 {-0.32/23 16} g5 {+0.26/17 24} 7. Nd5 {-0.38/23
24} Kd8 {+0.50/17 27} 8. Kf2 {-0.31/24 32} Nce7 {+0.55/19 44} 9. Be2
{0.00/23 16} Nxd5 {+0.48/18 24} 10. Ne5 {-0.24/22 12} g4 {+0.43/17 22} 11.
Bxg4 {0.00/22 10} Qh4+ {+0.81/18 25} 12. g3 {-0.14/23 9} Qf6 {+0.61/17 26}
13. exd5 {0.00/22 13} d6 {+0.52/17 27} 14. Bxf4 {0.00/22 11 ; getting 2 pawns for the knight, much better than trying to save it} dxe5 {+0.36/17
27} 15. dxe5 {0.00/22 11} Bxg4 {+0.08/17 30} 16. Qxg4 {0.00/22 14} Qg6
{+0.20/18 41} 17. Qf3 {0.00/23 21} Bh6 {+0.14/18 25} * However, KomodoMCTS blunders badly twice and then is totally lost.
[Event "SfPV4-Ho-Ko-20rare"]
[Site "?"]
[Date "2019.07.28"]
[Round "9"]
[White "Stockfish_19072603s36-PV4"]
[Black "KomodoMCTS-13.02-pv4"]
[Result "1-0"]
[BlackElo "2400"]
[ECO "C25"]
[Opening "Vienna"]
[Time "15:04:17"]
[Variation "Steinitz Gambit"]
[WhiteElo "2400"]
[TimeControl "720+3"]
[Termination "normal"]
[PlyCount "56"]
[WhiteType "human"]
[BlackType "human"]
[FEN "r2k2nr/ppp2p1p/6qb/3PP3/5B2/5QP1/PPP2K1P/R6R w - - 3 18"]

{brief notes by Stockfish pv=1} 18. Rhd1 {0.00/23 25}
Qf5 {+0.01/18 30 ??} (18. .. Bxf4 19. Qxf4 Ne7 20. d6 Nc6 21. dxc7+ Kc8 22.
Rd6 Qxc2+ 23. Kf1 Qxh2 24. Rad1 Qh5 25. b4 a6 {all moves, both colors,
0.00}) 19. Rd4 {+1.54/24 22} Rc8 {-0.97/18 29 ??} (19. .. Bxf4 20. Rxf4
Qxe5 21. Re1 Qxb2 22.Kg2 {about +1.69}) 20. Rad1 {+3.29/22 17} Bg7 {-1.77/18 16 ?!} (20.
.. Ke8) 21. g4 {+5.92/22 16} Qxc2+ {-4.23/19 26} 22. R1d2 {+7.00/22 8} Qc5
{-4.52/17 12} 23. d6 {+8.20/26 20} cxd6 {-4.37/18 18} 24. b4 {+8.28/24 15}
Qc7 {-4.44/18 21} 25. Rxd6+ {+8.51/24 12} Ke8 {-4.42/17 16} 26. Qd3
{+8.81/24 12} Nh6 {-8.72/19 41} 27. h3 {+11.26/27 21} Ng8 {-16.09/18 16}
28. Rd7 {+16.29/23 10} Qb6+ {-18.88/19 18  Arena Adjudication} 1-0
- By MrKris (**) Date 2019-07-30 07:15
A01   Nimzowitsch-Larsen Attack: Dutch Variation
With this opening Stockfish only drew with both colors vs. Houdini and Komodo.
However, KomodoMCTS lost with both colors.

With black Stockfish sacrificed a pawn in the opening, 10...e3 !?:
r1bq1rk1/pp2b1pp/n1pp1n2/5p2/2PN4/PP1Pp1P1/1B1NPPBP/R2QK2R w KQ - 0 11

[Event "SfPV4-Ho-Ko-20rare"]
[Site "?"]
[Date "2019.07.28"]
[Round "4"]
[White "KomodoMCTS-13.02-pv4"]
[Black "Stockfish_19072603s36-PV4"]
[Result "0-1"]
[BlackElo "2200"]
[ECO "A01"]
[Opening "Nimzowitsch-Larsen Attack"]
[Time "08:08:34"]
[Variation "Dutch Variation"]
[WhiteElo "2200"]
[TimeControl "720+3"]
[Termination "normal"]
[PlyCount "101"]
[WhiteType "human"]
[BlackType "human"]

1. b3 f5 2. Nf3 d6 3. Bb2 e5 4. c4 {+0.08/17 21} Nf6 {+0.19/25 16} 5. g3
{+0.08/17 29} Be7 {0.00/23 10} 6. d3 {+0.11/17 26} c6 {0.00/22 8} 7. Bg2
{+0.12/18 32} O-O {0.00/24 37} 8. Nbd2 {+0.11/17 26} Na6 {+0.21/21 8} 9. a3
{+0.15/17 22} e4 {+0.61/22 9} 10. Nd4 {+0.14/17 22} e3 {+0.23/23 15 ---Diagram above---} 11.
fxe3 {+0.07/17 24} Ng4 {+0.26/23 12} 12. Nf1 {+0.12/19 48} Bg5 {+0.16/24
20} 13. Nc2 {+0.07/17 17} Qe7 {+0.20/22 15} 14. Bd4 {+0.15/17 30} c5
{+0.40/23 27} 15. Bc3 {-0.03/18 31} Nc7 {+0.41/24 26} 16. h3 {-0.06/17 23}
Nf6 {+0.59/22 9} 17. b4 {-0.08/18 27} Rb8 {+0.45/24 30} 18. bxc5 {-0.02/17
18} dxc5 {+0.46/21 13} 19. a4 {-0.05/17 19} b6 {+0.36/25 43 ; after this Ko.MCTS can find nothing better than to shuffle its major pieces and king ---first Diagram below---} 20. Rg1
{-0.03/18 37} Re8 {+0.61/22 26} 21. Ra3 {+0.03/17 19} a5 {+0.51/24 36} 22.
Qa1 {-0.05/17 16} Na6 {+0.50/25 21} 23. h4 {-0.12/17 22} Bh6 {+0.65/22 8}
24. Bxf6 {-0.08/17 17} gxf6 {+0.46/23 9} 25. Qc1 {-0.15/19 40} Nb4
{+0.60/27 36} 26. Kd1 {-0.23/16 10} Bd7 {+0.65/25 9} 27. Bf3 {-0.23/17 17}
Rf8 {+0.54/26 12} 28. Rg2 {-0.16/17 14} Rbd8 {+0.83/24 17} 29. Qb2
{-0.16/17 19} Kh8 {+0.81/27 23} 30. Rf2 {-0.26/17 15} Qe8 {+1.05/26 25} 31.
Qb3 {-0.27/17 16} Rg8 {+0.87/25 9} 32. Bd5 {-0.11/17 15} Nxd5 {+0.97/25 18}
33. cxd5 {-0.18/16 13} Rb8 {+1.14/22 9} 34. Ke1 {-0.18/17 21} b5 {+1.39/22
15} 35. axb5 {-0.31/16 11} Rxb5 {+2.12/22 15} 36. Qa2 {-0.38/18 23} Qb8
{+2.63/23 13 ; ---2nd Diagram below---} 37. Rf3 {-0.69/16 6} c4 {+1.90/23 15} 38. Nd4 {-0.41/16 7}
Rb1+ {+2.17/23 9} 39. Kf2 {-1.24/17 8} f4 {+2.31/24 12} 40. gxf4 {-1.51/17
12} Bf8 {+2.73/24 10} 41. d6 {-1.54/18 13} Qb7 {+3.93/25 16} 42. e4
{-2.29/18 10} Qb6 {+5.24/23 9} 43. Ne3 {-3.08/17 6} Rh1 {+5.06/22 9} 44.
Nec2 {-3.28/17 6} Bxd6 {+6.07/22 7} 45. dxc4 {-3.81/17 6} Bc5 {+8.98/21 15}
46. Rad3 {-4.53/16 4} a4 {+9.57/23 8} 47. h5 {-6.23/17 7} Rgg1 {+11.39/22
6} 48. Rg3 {-6.93/16 4} Rf1+ {+12.62/24 7} 49. Ke3 {-7.56/15 2} Rb1
{+12.92/22 9} 50. Qa3 {-8.17/17 6} Bxa3 {+14.41/23 9} 51. Nxa3 {-9.25/15 3
White resigns} 0-1

After 19...b6 white, still a pawn up, just shuffles and trades its bishops for knights:
1rb2rk1/p1n1q1pp/1p3n2/2p2pb1/P1P5/2BPP1PP/2N1P1B1/R2QKN1R w KQ - 0 20

After 36...Qb8 white has been claiming only =+ but it is essentially lost, black +2.63, it is still the pawn up but with no counterplay at all:
1q4rk/3b3p/5p1b/prpP1p2/7P/R2PP1P1/Q1N1PR2/4KN2 w - - 2 37

- - -

With black Ko.MCTS slowly gets outplayed a few centipawns per move every move.
[Event "SfPV4-Ho-Ko-20rare"]
[Site "?"]
[Date "2019.07.28"]
[Round "3"]
[White "Stockfish_19072603s36-PV4"]
[Black "KomodoMCTS-13.02-pv4"]
[Result "1-0"]
[BlackElo "2200"]
[ECO "A01"]
[Opening "Nimzowitsch-Larsen Attack"]
[Time "06:51:29"]
[Variation "Dutch Variation"]
[WhiteElo "2200"]
[TimeControl "720+3"]
[Termination "normal"]
[PlyCount "138"]
[WhiteType "human"]
[BlackType "human"]

1. b3 f5 2. Nf3 d6 3. Bb2 e5 4. c4 {+0.15/25 30} c6 {0.00/17 18} 5. g3
{+0.17/24 10} Be7 {0.00/18 32} 6. d3 {+0.29/23 16} Nh6 {0.00/17 23} 7. c5
{+0.40/21 10} Bf6 {+0.08/17 27} 8. Nbd2 {+0.27/20 8} Be6 {+0.09/18 36} 9.
Bg2 {+0.34/24 21} Nf7 {+0.12/18 26} 10. cxd6 {+0.16/21 12} Qxd6 {+0.03/17
21} 11. Qc2 {+0.17/22 12} Na6 {+0.01/18 29} 12. Rc1 {+0.40/20 6} O-O-O
{0.00/18 30} 13. O-O {+0.48/24 26} Kb8 {+0.16/17 21} 14. Nc4 {+0.53/25 43}
Bxc4 {-0.02/18 25} 15. bxc4 {+0.32/23 8} Qc7 {+0.02/19 48} 16. Bc3
{+0.84/22 20} Ka8 {-0.02/18 21} 17. Rb1 {+0.33/26 53} h5 {-0.12/17 15} 18.
Nh4 {+0.57/23 12} Bxh4 {+0.09/17 20} 19. gxh4 {+0.50/23 25} Nc5 {+0.14/18
34} 20. Kh1 {+0.42/23 25} Rhe8 {+0.20/17 17} 21. Rfd1 {+0.60/22 15} Rd7
{+0.28/17 19} 22. Qc1 {+0.64/23 18} Ne6 {+0.51/17 19} 23. Qa3 {+0.30/23 24}
Nf4 {+0.31/17 21} 24. Ba5 {+0.62/23 21} Qc8 {+0.20/17 24} 25. Bf1 {0.00/25
18} a6 {+0.03/18 32} 26. Bb6 {+0.16/24 13} g5 {+0.01/17 14} 27. Qa5
{0.00/27 36} gxh4 {+0.13/17 15} 28. f3 {+0.27/24 19} h3 {+0.03/18 24} 29.
d4 {+0.85/22 14} Re6 {-0.04/17 16} 30. a4 {+0.72/23 15} Re8 {-0.08/18 19}
31. e3 {+1.75/24 15} Ng2 {-0.62/17 13} 32. d5 {+2.09/22 19} Rg8 {-1.08/18
21} 33. Bc5 {+2.52/26 19} Rc7 {-1.03/17 13} 34. Qb6 {+2.09/26 16} Qb8
{-1.39/17 10} 35. Rb2 {+2.71/25 17} Nh4 {-1.57/17 14} 36. Bxh3 {+2.53/23 6}
e4 {-0.99/17 13} 37. fxe4 {+2.78/26 13} cxd5 {-1.06/17 10} 38. exd5
{+2.91/23 7} Rgc8 {-1.43/17 11} 39. Bb4 {+2.63/24 13} Rd7 {-1.43/18 13} 40.
Qd4 {+3.07/22 5} Nf3 {-1.28/17 8} 41. Qf4 {+3.03/23 8} N7e5 {-1.37/17 8}
42. c5 {+2.86/22 7} Rg8 {-2.64/18 10} 43. Rg2 {+3.66/26 13} Rdg7 {-1.76/17
7} 44. d6 {+3.55/24 6} Rxg2 {-2.52/17 8} 45. Bxg2 {+4.61/29 6} Rxg2
{-2.75/16 7} 46. Kxg2 {+4.79/25 7} Qg8+ {-2.84/15 4} 47. Kh1 {+4.71/25 6}
Qb3 {-2.63/15 4} 48. Rf1 {+4.92/28 8} Qd5 {-2.76/15 5} 49. d7 {+5.18/24 7}
Qxd7 {-3.26/15 5} 50. Rxf3 {+5.30/23 5} Nxf3 {-3.43/15 5} 51. Qxf3
{+5.64/23 7} Qxa4 {-3.40/15 5} 52. Bc3 {+5.73/22 7} Qc4 {-3.92/14 3} 53.
Bd4 {+5.92/21 5} Qf7 {-3.94/14 3} 54. Qf4 {+6.46/22 3} Qd7 {-4.00/14 3} 55.
Kg2 {+7.20/22 4} Qf7 {-4.65/14 3} 56. Kh3 {+8.79/22 4} Qd7 {-4.92/15 3} 57.
Kg3 {+10.50/25 7} Qh7 {-5.19/14 2} 58. Kh4 {+11.33/23 3} Qe7+ {-5.87/14 3}
59. Kxh5 {+12.63/23 2} Qd7 {-9.34/14 3} 60. Kg5 {+19.94/24 5} Qe7+
{-5.51/14 2} 61. Kg6 {+25.49/24 2} Qe6+ {-3.22/14 2} 62. Kh7 {+27.66/25 3}
Qe7+ {-4.51/14 3} 63. Kh6 {+28.59/24 3} Qe6+ 64. Kg7 {+29.25/27 8} Qe7+
{0.00/13 2} 65. Kh6 {+61.33/27 8} Qe6+ {0.00/14 2} 66. Kg5 {+61.38/30 8}
Qe7+ {-6.59/15 4} 67. Kxf5 {+61.29/22 3} Qf7+ {-11.39/15 4} 68. Kg4
{+64.23/27 4} Qg8+ {-9.11/14 3} 69. Qg5 {+72.21/31 3} Qc8+ {Black resigns}
1-0


After 31...Ng2 again Ko.MCTS has a knight pair vs. bishop pair and had been giving itself only a modest disadvantage, then Stockfish knows its attack is good, black's superficial, with 32.d5 +2.09:
k1q1r3/1p1r1n2/pBp5/Q3pp1p/P1PP4/4PP1p/6nP/1R1R1B1K w - - 1 32
- By MrKris (**) Date 2019-07-30 09:47
B02   Alekhine: Mokele Mbembe (Bücker) Variation, 5 white wins: Sf 1-0 Ho, Ho 1-0 Sf, Sf 1-0 Ko, Ko 1-0 Sf, Sf 1-0 KoM;
then this.
21...Kb8 pawn sacrifice; 25...d4 2nd pawn sacrifice; 29...Rxe3 temporary exchange sacrifice; 34...h4 3rd pawns sacrifice with 35.Qxg7 ?! (declining would have been 0.00); and 36.e6 ?? losing.

[Event "SfPV4-Ho-Ko-20rare"]
[Site "?"]
[Date "2019.07.28"]
[Round "6"]
[White "KomodoMCTS-13.02-pv4"]
[Black "Stockfish_19072603s36-PV4"]
[Result "0-1"]
[BlackElo "2400"]
[ECO "B02"]
[Opening "Alekhine"]
[Time "11:01:39"]
[Variation "Mokele Mbembe (Bücker) Variation"]
[WhiteElo "2400"]
[TimeControl "720+3"]
[Termination "normal"]
[PlyCount "121"]
[WhiteType "human"]
[BlackType "human"]

1. e4 Nf6 2. e5 Ne4 3. d4 {+1.12/17 21} e6 {-1.44/22 22} 4. Nh3 {+1.11/18
35} h6 {-1.58/21 10} 5. c3 {+1.12/18 28} d5 {-1.38/20 3} 6. Bd3 {+0.90/17
16} c5 {-1.49/23 21} 7. O-O {+0.98/17 22} b6 {-1.29/24 18} 8. Qg4 {+1.04/18
34} Nc6 {-1.25/22 8} 9. Be3 {+0.91/19 46} cxd4 {-0.92/21 8} 10. cxd4
{+1.23/17 12} Nb4 {-1.59/22 17} 11. Bxe4 {+1.22/17 19} dxe4 {-1.65/24 18}
12. Nc3 {+1.35/18 29} Bb7 {-1.47/25 24} 13. a3 {+1.25/19 36} Nd3 {-0.99/22
9} 14. Rab1 {+1.08/18 20} f5 {-1.47/24 31} 15. Qh5+ {+1.35/18 20} Kd7
{-1.42/26 19} 16. Qe2 {+0.84/17 21} Rc8 {-1.11/23 9} 17. f3 {+0.70/18 23}
Qe8 {-1.40/23 12} 18. Nb5 {+0.74/19 42} a6 {-1.55/22 22} 19. fxe4 {+0.70/18
21} fxe4 {-1.33/23 15} 20. Nc3 {+0.76/17 15} Kc7 {-1.07/25 28} 21. Nf4
{+0.82/18 25} Kb8 {-0.98/25 24} 22. Nxd3 {+1.12/18 15} exd3 {-1.19/22 18}
23. Qxd3 {+1.25/18 18} Be7 {-1.07/23 12} 24. d5 {+1.08/18 23} exd5
{-1.48/22 25} 25. Bxb6 {+1.14/17 21} d4 {-0.83/23 12} 26. Bxd4 {+0.80/18
16} Qc6 {-0.84/24 21} 27. Qe2 {+0.85/19 22} Rhd8 {-0.17/26 23} 28. Be3
{+0.75/17 15} Rd3 {-0.20/23 13} 29. Rf2 {+0.51/17 16} Rxe3 {0.00/24 17} 30.
Qxe3 {+0.31/17 16} Bc5 {0.00/24 11} 31. Qg3 {+0.50/17 16} Rf8 {0.00/25 16}
32. Rf1 {+0.27/17 16} h5 {0.00/28 20} 33. h3 {+1.01/18 20} (33. e6+ {0.00}
Ka7 34. e7 Rf7 35. h3 Qe6 36. Kh2 Rxf2 37. Rxf2 Bd6 38. Rf4 g5 39. Qxg5 Qe3
40. e8=Q Bxf4+ 41. Qxf4 Qxf4+ 42. Kg1 Qc1+ 43. Kh2 Qf4+) 33. .. h4
{+0.57/25 15} 34. Qxg7 {+0.02/18 18 ?!} (34. Qg4 {0.00} 34. .. Rf4 35. Qg5
Rf5) (34. Qg5 {0.00} Rf5 35. Qg4 g5 36. Nd1 Rxe5 37. b4 Ba7 38. Kh1 Bxf2
39. Nxf2 Qc3) 34. .. Ka7 {+1.13/29 18} 35. e6 {-0.45/17 13 ??} (35. Nd1 Qd5
36. Kh2 Rg8 37. Nc3 Bxf2 38. Rxf2 Rxg7 39. Nxd5 Bxd5 40. Re2 {about -0.61,
white 3 pawns vs. black bishop}) 35. .. Rf6 {+3.00/26 10} 36. Qg4 {0.00/17
9} Rf4 {+2.75/26 9} 37. Qg8 {-1.63/17 15} Bxf2+ {+3.14/30 18} 38. Rxf2
{-1.55/16 7} Qb6 {+3.23/23 6} 39. Nd1 {-1.80/16 9} Re4 {+3.15/31 11} 40.
Qf8 {-1.71/17 13} Re1+ {+3.30/29 9} 41. Kh2 Rxd1 {+3.40/28 12} 42. e7
{-1.91/18 18} Qc7+ {+3.79/30 19} 43. Qf4 {-2.06/14 3} Qxe7 {+3.77/22 10}
44. Rd2 {-2.15/17 8} Re1 {+3.83/27 9} 45. b4 {-2.13/17 7} Ka8 {+4.22/27 7}
46. Qd6 {-1.71/16 4} Qe3 {+4.53/28 11} 47. Qf8+ {-1.99/14 4} Ka7 {+4.57/24
4} 48. Qf2 {-1.88/14 3} Bc6 {+5.64/29 18} 49. Qf7+ {-2.23/17 6} Kb6
{+6.03/27 4} 50. Qf2 Qxf2 {+9.16/29 17} 51. Rxf2 {-3.50/14 2} Ra1 {+9.80/26
7} 52. Rf4 {-3.09/15 4} Ra2 {+9.99/25 9} 53. Kg1 {-3.08/14 3} Rxg2+
{+10.60/25 6} 54. Kf1 {-3.66/14 3} Rg3 {+12.06/27 11} 55. Rxh4 {-4.15/15 4}
Rxa3 {+14.79/22 1} 56. Kg1 {-5.56/16 6} Rb3 {+15.99/25 4} 57. Kf2 {-9.18/15
3} Bd7 {+18.25/26 7} 58. Rh6+ Bc6 {+21.59/25 4} 59. Rh4 {-8.73/16 4} Kb5
{+148.92/29 9} 60. Rh6 {-11.93/15 2} Rxb4 {+148.96/30 1} 61. Rh5+
{-13.79/15 3  Arena Adjudication} 0-1
- By MrKris (**) Date 2019-07-31 03:33
G/12'+3" 6cpu, AMD PhII X6, Sy.6, 1G hash
Gauntlet. The same 20 rare openings reversed all engines:

Stockfish dev. PV=4 : 72.5/120 (+36 =73 -11)
Houdini 6.03 pv=1    : 17.0/40
Komodo 13.02 pv=1  : 17.0/40
Ko.MCTS 13.02 pv=4 : 13.5/40


Event finished. Stockfish won 16 of the 20 openings with 3.5/6 or more, only 2 with 3.0/6 and only 2 with 2.5/6.

Highly consistant with my previous posts on Stockfish multi-PV.
Stockfish PV=6 was is http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=33063
As expected vs. Sf PV=6 Houdini PV=1 and Komodo PV=1 came closer to 50% than here:
Sf PV=6 50.5/100 vs. Houdini 6 pv=1
Sf PV=6 52.0/100 vs. Komodo 13 pv=1


See also here, dbl. RR x 18 openings: http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=33114
1. Stockfish_19071415-PV6: 45.5/72
2. KomodoMCTS-13.02-PV6: 33.5/72 
3. Houdini-6.03std-PV6      : 29.0/72


Stockfish played here at 'Slow Mover' = 36 for its PV=4, manually tuned Sf PV4 vs. Sf defaults.
(Otherwise Stockfish and Houdini will use most of their base time in the first few moves after the book. Neither Komodo regular nor MCTS have that problem.)
For example HoudiniPV1 1-0 StockfishPV4, game 88:
thru move, clock times remaining:
10...Qh5 ; 09:58 - 10:31
20...Rd2 ; 07:37 - 08:15
30...Ke7 ; 03:50 - 05:51
40...Rc8 ; 02:15 - 03:03
50...Bf7+; 01:28 - 01:26
56... 1-0; 01:19 - 00:47

A81   Dutch: 2.g3 Nf6 3.Bg2
Stockfish says white could have stayed at 0.00 instead of 35.Rh2 ?!, then Houdini lost after 36.c4 ? and 39.Rh4 ?!.
[Event "SfPV4-Ho-Ko-20rare"]
[Site "?"]
[Date "2019.07.29"]
[Round "26"]
[White "Houdini-6.03std-pv1"]
[Black "Stockfish_19072603s36-PV4"]
[Result "0-1"]
[BlackElo "2200"]
[ECO "A81"]
[Opening "Dutch"]
[Time "13:20:42"]
[Variation "2.g3 Nf6 3.Bg2"]
[WhiteElo "2200"]
[TimeControl "720+3"]
[Termination "normal"]
[PlyCount "113"]
[WhiteType "program"]
[BlackType "program"]

1. d4 f5 2. g3 {+0.58/23 31} Nf6 {-0.43/23 27} 3. Bg2 {+0.52/23 17} d6
{-0.42/23 12} 4. Nf3 {+0.62/20 7} g6 {-0.42/22 10} 5. Nc3 {+0.36/23 35} Bg7
{-0.25/21 10} 6. O-O {+0.37/23 19} O-O {-0.29/25 35} 7. Qd3 {+0.35/22 17}
Nc6 {-0.21/23 16} 8. Bf4 {+0.38/22 30} Nh5 {0.00/22 16} 9. Bd2 {+0.28/24
17} e5 {-0.13/23 23} 10. dxe5 {+0.43/23 12} dxe5 {-0.07/20 8} 11. Ng5
{+0.58/21 8} Bf6 {-0.07/25 32} 12. Qc4+ {+0.19/24 60} Kg7 {-0.15/24 6} 13.
Bxc6 {+0.30/23 9} bxc6 {-0.06/25 18} 14. Rad1 {+0.43/23 11} Qe8 {-0.21/24
13} 15. Na4 {+0.38/25 44} h6 {-0.10/24 17} 16. Nf3 {+0.43/24 12} Be6
{0.00/25 34} 17. Qc5 {+0.06/24 30} e4 {-0.32/22 16} 18. Ne5 {+0.38/23 12}
Kh7 {-0.24/22 13} 19. f4 {+0.33/22 14} Rg8 {-0.16/23 12} 20. Nc3 {+0.77/20
10} Rb8 {-0.05/23 15} 21. b3 {+0.04/22 25} Rb6 {-0.15/22 12} 22. Na4
{+0.10/21 16} Ra6 {0.00/24 23} 23. Bc1 {+0.27/21 13} Bc8 {-0.11/25 30} 24.
Kh1 {-0.11/24 41} g5 {0.00/22 10} 25. a3 {-0.11/26 16} gxf4 {0.00/26 29}
26. gxf4 {-0.11/25 4} Bxe5 {+0.32/23 12} 27. fxe5 {-0.10/27 12} f4
{+0.30/26 17} 28. Bxf4 {-0.10/26 2} Bh3 {+0.30/25 11} 29. Rf2 {-0.10/29 18}
Qg6 {+0.29/27 9} 30. Bg3 {+0.15/24 19} Ra5 {+0.27/25 20} 31. Qc3 {-0.10/29
24} Rd5 {+0.50/25 12} 32. Rg1 {-0.10/27 3} Nxg3+ {0.00/26 19} 33. hxg3
{-0.09/29 15} Qg5 {0.00/28 9} 34. Qxc6 {-0.09/25 18} Rxe5 {+0.20/22 11 at
43 plies, 18 mins., Stockfish PV=4 has: 35.Qf6 0.00; 35.Rf7+ 0.00; 35.Nc3
0.00; 35.Rh2?! -0.41} 35. Rh2 {-0.09/27 10 ?!} Bg4 {+0.96/25 24} 36. c4
{-0.09/29 12 ?} (36. Qxc7+ {Sf}) 36. .. Rg7 {+1.31/23 8} 37. Nc3 {-0.09/29
9} Rf7 {+1.51/25 19} 38. b4 {-0.16/26 21} e3 {+1.30/24 17} 39. Rh4
{-0.39/24 36 ?! in an already bad position} (39. Rd1) 39. .. h5 {+1.80/22
12} 40. Rd1 {-0.68/25 14} Qf5 {+2.46/25 15} 41. Rc1 {-1.24/23 13} Kg7
{+1.93/23 16} 42. b5 {-1.12/24 16} Qc8 {+2.88/24 12} 43. Kg1 {-1.53/25 16}
Rf6 {+2.77/23 12} 44. Qg2 {-1.44/25 7} Qf8 {+3.94/26 12} 45. Rd1 {-2.28/24
13} Ref5 {+3.85/24 4} 46. Ne4 {-2.34/25 11} Rf7 {+4.38/25 27} 47. c5
{-2.57/21 1} Qe8 {+4.36/22 3} 48. b6 {-2.87/25 13} axb6 {+4.47/23 5} 49.
cxb6 {-2.99/20 1} Qc6 {+4.68/22 6} 50. bxc7 {-2.51/22 2} Rxc7 {+5.12/22 5}
51. Nd6 {-2.87/25 9} Qxg2+ {+6.30/21 9} 52. Kxg2 {-1.92/11} Rf2+ {+6.89/22
8} 53. Kg1 {-3.93/16} Rc2 {+7.45/22 8} 54. a4 {-12.20/21 18} Rd2 {+10.86/20
5} 55. Rxd2 {-19.00/21 10} exd2 {+148.94/24 15} 56. Kxf2 {-148.89/28 4}
d1=Q {-7.69/21 10} 57. Nf5+ {-148.90/29 2  White resigns} 0-1
Attachment: SfPV4-Ho-Ko-KM-20rare.pgn - games (303k)
                                Elo  +  -    Games   Score   Av.Op. Draws
  1 Stockfish_19072603s36-PV4 : 117 39 38  72.5/120  60.4%     43   60.8%
  2 Houdini-6.03std-pv1       :  65 72 74  17.0/40   42.5%    117   55.0%
  3 Komodo-13.02-pv1          :  65 62 66  17.0/40   42.5%    117   65.0%
  4 KomodoMCTS-13.02-pv4      :   0 58 69  13.5/40   33.8%    117   62.5%

                              Score                = - *     *   = -       *
1: Stockfish_19072603s36-PV4 72.5/120 wb··wb··wb··wb··wb··wb··wb··wb··wb··wb··
2: Houdini-6.03std-pv1       17.0/40  00==01======0==10=010=0=10===1==0===0=01 
2: Komodo-13.02-pv1          17.0/40  ====01===00101==0=01==0=0=======0===0=== 
4: KomodoMCTS-13.02-pv4      13.5/40  ==00000=0=0==1==0=0===0=======0====00=0=
                          20 openings:
                          * 3 Sf 4.5/6
                           13 Sf >=3.5/6
                          = 2 Sf 3.0/6
                          - 2 Sf 2.5/6
Up Topic The Rybka Lounge / Computer Chess / Stockfish dev. @ PV=4 gauntlet

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