Issue with Nemorino

[xr_a_y]

I'm running short TC test versus Nemorino. I appears it is abandoning most of its game including near wins like here

Code: Select all

[Event "My Tournament"]
[Site "?"]
[Date "2020.03.28"]
[Round "48"]
[White "nemorino"]
[Black "minic_1.56"]
[Result "0-1"]
[ECO "B72"]
[GameDuration "00:01:04"]
[GameEndTime "2020-03-28T23:27:55.765 CET"]
[GameStartTime "2020-03-28T23:26:50.986 CET"]
[Opening "Sicilian"]
[PlyCount "90"]
[Termination "abandoned"]
[TimeControl "30+0.3"]
[Variation "Dragon, Classical, Nottingham Variation"]

1. e4 {book} c5 {book} 2. Nf3 {book} d6 {book} 3. d4 {book} cxd4 {book}
4. Nxd4 {book} Nf6 {book} 5. Nc3 {book} g6 {book} 6. Be3 {book} Bg7 {book}
7. Be2 {book} Nc6 {book} 8. Nb3 {book} O-O {book} 9. O-O {book} b6 {book}
10. f4 {book} Qd7 {book} 11. h3 {book} Bb7 {book} 12. Qd2 {book} Rad8 {book}
13. Bb5 {+0.01/15 13s} Qc8 {+0.35/15 1.6s} 14. a4 {+0.05/12 0.44s}
e5 {+0.11/14 1.4s} 15. Bf2 {+0.13/13 1.0s} exf4 {+0.52/14 0.99s}
16. Bh4 {-0.06/15 0.84s} Rde8 {+0.42/17 1.6s} 17. Rxf4 {+0.20/16 0.69s}
Nh5 {+0.33/17 1.5s} 18. Rf2 {+0.26/17 0.94s} Bxc3 {+0.07/19 1.4s}
19. Qxc3 {+0.40/19 0.87s} Rxe4 {-0.10/19 0.93s} 20. Bg5 {+0.24/18 1.2s}
Nb8 {-0.17/17 1.1s} 21. Qd2 {+0.80/15 1.9s} Re5 {+0.01/18 0.90s}
22. Bh6 {+1.08/16 0.78s} Rd8 {-0.01/20 0.73s} 23. g4 {+0.84/15 0.70s}
a6 {+0.20/16 0.69s} 24. Bd3 {+0.79/14 0.68s} Ng7 {-0.01/14 0.74s}
25. Raf1 {+0.65/13 0.76s} Qc6 {-0.30/15 0.70s} 26. Kh2 {+1.07/15 0.70s}
Rf8 {-0.36/18 1.1s} 27. Nd4 {+1.27/16 0.88s} Qc7 {-0.10/14 0.88s}
28. Nf5 {+1.26/16 0.49s} gxf5 {-0.01/22 1.1s} 29. Bxg7 {+3.08/20 0.72s}
Kxg7 {-0.01/23 0.65s} 30. Qg5+ {+4.96/26 0.58s} Kh8 {+0.01/19 0.051s}
31. Qf6+ {+4.27/24 0.66s} Kg8 {+0.01/20 0.039s} 32. gxf5 {+8.90/25 0.66s}
Re1 {-20.81/18 3.2s} 33. Rxe1 {+12.40/27 0.63s} d5+ {-21.81/20 0.85s}
34. Kg1 {+12.53/26 0.62s} Qg3+ {-23.03/22 0.82s} 35. Kf1 {+4.75/17 0.27s}
Nd7 {-8.20/16 0.79s} 36. Qh6 {+6.48/18 0.32s} d4 {-9.63/17 0.76s}
37. Be4 {+7.82/18 0.31s} Re8 {-10.09/18 0.41s} 38. Rg2 {+7.52/20 0.70s}
Qxg2+ {-8.90/15 0.72s} 39. Bxg2 {+7.52/21 0.28s} Bxg2+ {-10.94/16 0.39s}
40. Kf2 {+8.34/20 0.29s} Rxe1 {-11.09/19 0.69s} 41. Qg5+ {+9.71/19 0.55s}
Kf8 {-11.88/14 0.56s} 42. Kxe1 {+9.53/19 0.58s} d3 {-12.05/18 0.66s}
43. cxd3 {+10.36/16 0.29s} Bf3 {-12.56/14 0.51s} 44. Qd8+ {+11.11/18 0.32s}
Kg7 {-13.64/16 0.62s} 45. Qxd7 {+11.91/19 0.54s}
Kf6 {-13.94/17 0.60s, White disconnects} 0-1

Anyone saw this before ?

[Dann Corbit]

Is it always in a way ahead or way behind situation?
It could be fail high and fail low that never resolve and it simply does not respond in time.
If it were as simple as that you could just add more time checks.

Can you replicate the problem on your equipment?

Especially, if you can get it to reproduce the problem with the debugger attached you should be able to see what is happening

I just watched a powerful engine sit on a position for more than an hour before giving a move.

There are, of course many possibilities. Infinite loop etc.

[xr_a_y]

Works great using last source at https://bitbucket.org/christian_g_nther ... rc/master/

[Dann Corbit]

What was wrong?

[xr_a_y]

I don't know, last source version seems to differ from release 5 thanks to some recent fix for TCEC.