Rebel EAS and CS Tal Bug

Sadly, Rebel EAS has the same bug as CS Tal has. As I reported before, CS Tal crashes very rare in my testings (disconnects) every some thousand games - no big deal, but annoying. Same for Rebel EAS.
But the main bug is, that both engines crash in a specific opening im my testings and at the same position, just a few moves after starting the game. I reported this before for CS Tal - it was not fixed by CW. Now, the same here with Rebel EAS, I hope, Ed will fix this:

[Event "CPU-engine testing"]
[Site "?"]
[Date "2023.08.23"]
[Round "225"]
[White "Stockfish 230807 avx2"]
[Black "Rebel EAS avx2"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-23T15.245 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-23T15.254 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "13"]
[Termination "abandoned"]
[TimeControl "180+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {+0.59/26 6.7s} Nd7 {-1.08/20 6.2s}
6. Nxf7 {+1.14/21 2.8s} Kxf7 {-2.00/21 5.3s}
7. Qh5+ {+1.16/24 4.5s, Black disconnects} 1-0

[Event "CPU-engine testing"]
[Site "?"]
[Date "2023.08.23"]
[Round "225"]
[White "Stockfish 16 230630"]
[Black "Rebel EAS avx2"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-23T15.989 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-23T15.196 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "13"]
[Termination "abandoned"]
[TimeControl "180+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {+0.60/26 6.6s} Nd7 {-1.08/20 6.0s}
6. Nxf7 {+1.27/23 3.4s} Kxf7 {-2.00/21 5.4s}
7. Qh5+ {+1.22/22 2.8s, Black disconnects} 1-0

[Event "CPU-engine testing"]
[Site "?"]
[Date "2023.08.23"]
[Round "225"]
[White "KomodoDragon 3.2 avx2"]
[Black "Rebel EAS avx2"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-23T15.802 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-23T15.993 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "13"]
[Termination "abandoned"]
[TimeControl "180+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {+0.71/20 5.7s} Nd7 {-1.08/20 6.0s}
6. Nxf7 {+1.03/23 9.7s} Kxf7 {-2.00/21 5.3s}
7. Qh5+ {+0.74/22 3.9s, Black disconnects} 1-0

[Event "CPU-engine testing"]
[Site "?"]
[Date "2023.08.23"]
[Round "225"]
[White "Berserk 11 avx2"]
[Black "Rebel EAS avx2"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-23T15.486 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-23T15.482 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "13"]
[Termination "abandoned"]
[TimeControl "180+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {+0.53/24 11s} Nd7 {-1.08/20 6.0s}
6. Nxf7 {+0.90/24 2.4s} Kxf7 {-2.00/21 5.3s}
7. Qh5+ {+0.92/25 2.3s, Black disconnects} 1-0

[Event "CPU-engine testing"]
[Site "?"]
[Date "2023.08.23"]
[Round "225"]
[White "Ethereal 14.00 nnue"]
[Black "Rebel EAS avx2"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-23T15.767 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-23T15.691 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "13"]
[Termination "abandoned"]
[TimeControl "180+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {+1.18/22 5.5s} Nd7 {-1.08/20 5.7s}
6. Nxf7 {+1.53/25 11s} Kxf7 {-2.00/21 5.3s}
7. Qh5+ {+1.86/22 4.2s, Black disconnects} 1-0

[Event "CPU-engine testing"]
[Site "?"]
[Date "2023.08.23"]
[Round "225"]
[White "CSTal 2.0 EAS avx2"]
[Black "Rebel EAS avx2"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-23T15.769 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-23T15.275 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "13"]
[Termination "abandoned"]
[TimeControl "180+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {+0.62/20 6.3s} Nd7 {-1.08/20 6.1s}
6. Nxf7 {+1.71/24 5.4s} Kxf7 {-2.00/21 5.1s}
7. Qh5+ {+1.29/24 13s, Black disconnects} 1-0

[Event "CPU-engine testing"]
[Site "?"]
[Date "2023.08.23"]
[Round "225"]
[White "Koivisto 9.2 avx2"]
[Black "Rebel EAS avx2"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-23T15.832 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-23T15.087 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "13"]
[Termination "abandoned"]
[TimeControl "180+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {+0.81/24 9.9s} Nd7 {-1.08/20 5.8s}
6. Nxf7 {+0.75/28 18s} Kxf7 {-2.00/21 5.2s}
7. Qh5+ {+1.20/27 3.9s, Black disconnects} 1-0

[Event "CPU-engine testing"]
[Site "?"]
[Date "2023.08.23"]
[Round "225"]
[White "RubiChess 230410 avx2"]
[Black "Rebel EAS avx2"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-23T15.386 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-23T15.080 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "13"]
[Termination "abandoned"]
[TimeControl "180+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {+0.62/24 3.9s} Nd7 {-1.08/20 5.9s}
6. Nxf7 {+1.48/24 11s} Kxf7 {-2.00/21 5.4s}
7. Qh5+ {+2.04/26 4.3s, Black disconnects} 1-0

[Event "CPU-engine testing"]
[Site "?"]
[Date "2023.08.23"]
[Round "225"]
[White "Clover 6 avx2"]
[Black "Rebel EAS avx2"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-23T15.280 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-23T15.177 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "13"]
[Termination "abandoned"]
[TimeControl "180+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {+0.63/22 6.6s} Nd7 {-1.08/20 5.9s}
6. Nxf7 {+0.97/23 8.1s} Kxf7 {-2.00/21 5.2s}
7. Qh5+ {+1.02/25 5.0s, Black disconnects} 1-0

[Event "CPU-engine testing"]
[Site "?"]
[Date "2023.08.23"]
[Round "225"]
[White "Revenge 3.0 avx2"]
[Black "Rebel EAS avx2"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-23T15.101 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-23T15.624 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "13"]
[Termination "abandoned"]
[TimeControl "180+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {+0.47/20 4.8s} Nd7 {-1.08/20 5.9s}
6. Nxf7 {+1.09/24 4.5s} Kxf7 {-2.00/21 5.2s}
7. Qh5+ {+1.31/23 4.9s, Black disconnects} 1-0

[Event "CPU-engine testing"]
[Site "?"]
[Date "2023.08.23"]
[Round "225"]
[White "Igel 3.5.0 popavx2"]
[Black "Rebel EAS avx2"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-23T15.625 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-23T15.106 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "13"]
[Termination "abandoned"]
[TimeControl "180+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {+1.09/23 14s} Nd7 {-1.08/20 5.9s}
6. Nxf7 {+1.68/23 13s} Kxf7 {-2.00/21 5.2s}
7. Qh5+ {+1.88/24 12s, Black disconnects} 1-0

Yep, the same game. The last bug is always the worst, happening in one of 10,000 games and not reproducible. I will give it a try in Arena with debug=on. Thanks for reporting.

Throw the garbage Arena GUI out the window and the bug will be fixed by itself..

Tested 2 versions of cutechess, no problem here.

Goes without saying cutechess is the problem.

I started a serious investigation. First off, made a book consisting of several hundred identical positions, the problem line up to and including Nxf7. I can then get it to crash but not consistently, not at the same point as Stephan, but randomly into the game. Most games are fine, sometimes it gives the cutechess bug error.

Meanwhile, I never get any problems using any other book, literally hundreds of thousands of games pass without error.

Right now it’s being hammered with the bug inducing book and the engine in debug mode, and so far no errors.

It’s not the engine, because one can put in Stephane’s crash position direct and it never errors.

So, some combination of cutechess and my UCI code.

What about the name of this new engine? I get CSTal 2.0 not Rebel EAS.

Werner wrote:

What about the name of this new engine? I get CSTal 2.0  not Rebel EAS.

From the website - and runs as a module under Chess System Tal 2.0

Stefan, can you post (or PM) your cutechess configuration and version number?

I will have a look at this special opening position at the weekend, also with the knight sacrifice on f7, such an opening handicap is not difficult, the time control doesn't really matter.
I also use Cutechess, I'm curious if this "disconnect" also occurs with me.

same problem here with this opening after only 10 games.

[Event "My Tournament"]
[Site "?"]
[Date "2023.08.25"]
[Round "1"]
[White "Rebel EAS x64 1CPU"]
[Black "CSTal 2.00NN x64 1CPU"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-25T20.121 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-25T20.264 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "124"]
[Termination "adjudication"]
[TimeControl "10+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {book} Nd7 {book} 6. Nf3 {+1.12/16 1.5s}
e6 {-0.62/15 0.91s} 7. c4 {+0.95/15 1.6s} N5f6 {-0.51/13 0.31s}
8. Nc3 {+1.08/12 0.36s} c5 {-0.53/15 2.0s} 9. Be2 {+1.18/16 0.98s}
cxd4 {-0.57/17 1.2s} 10. Qxd4 {+0.90/14 0.68s} Bc5 {-0.91/16 0.95s}
11. Qh4 {+0.95/16 1.5s} b6 {-0.46/13 0.68s} 12. O-O {+1.03/17 1.6s}
Bb7 {-0.45/14 1.0s} 13. Qg3 {+1.08/15 0.93s} O-O {-0.54/14 0.97s}
14. Rd1 {+0.95/14 1.4s} Nh5 {-0.46/15 1.1s} 15. Qg5 {+1.14/14 0.97s}
Qxg5 {-1.12/15 1.1s} 16. Bxg5 {+0.96/16 1.0s} Nhf6 {-1.45/15 0.91s}
17. Na4 {+0.90/17 0.80s} h6 {-1.07/17 1.1s} 18. Nxc5 {+1.57/17 0.77s}
Nxc5 {-1.41/19 0.69s} 19. Be3 {+1.29/17 1.6s} Na4 {-1.36/17 1.7s}
20. Rd2 {+1.34/17 1.1s} Rad8 {-1.06/18 2.3s} 21. Rad1 {+1.45/14 0.32s}
Rxd2 {-1.07/14 0.51s} 22. Rxd2 {+1.26/15 0.75s} Ne4 {-1.17/14 0.58s}
23. Rc2 {+1.28/15 1.6s} Rd8 {-1.39/15 0.81s} 24. Nd4 {+1.19/16 1.5s}
e5 {-1.60/18 1.0s} 25. Nb5 {+0.90/17 0.99s} a6 {-1.17/19 0.94s}
26. b3 {+1.06/18 0.73s} Nac5 {-1.01/18 0.90s} 27. Nc7 {+1.12/18 1.1s}
Rd7 {-1.09/18 0.82s} 28. Nd5 {+1.02/17 1.0s} Bxd5 {-1.10/19 1.1s}
29. cxd5 {+1.05/19 0.91s} Rxd5 {-1.10/21 0.54s} 30. f3 {+1.01/20 1.3s}
Nd6 {-1.14/21 2.7s} 31. Bxc5 {+1.00/20 0.76s} Rxc5 {-1.03/21 0.73s}
32. Rxc5 {+0.89/21 2.3s} bxc5 {-1.02/25 1.3s} 33. Bxa6 {+0.85/24 0.75s}
f5 {-1.03/20 0.71s} 34. g4 {+0.80/23 1.2s} f4 {-0.99/18 0.93s}
35. Kf2 {+1.05/16 1.1s} Kf7 {-1.15/14 0.61s} 36. Bc4+ {+1.21/16 0.41s}
Ke8 {-0.83/17 0.97s} 37. Ke2 {+1.08/17 0.71s} Kd7 {-0.42/19 1.3s}
38. Bd5 {+1.33/20 0.81s} Kc7 {-1.81/18 0.67s} 39. Kd2 {+1.64/21 1.2s}
Kb6 {-1.92/20 1.1s} 40. a4 {+1.75/21 1.1s} g5 {-1.31/20 1.3s}
41. Kc2 {+1.74/22 0.72s} Ka6 {-1.61/23 0.75s} 42. Kc3 {+1.48/23 0.86s}
Ka5 {-2.31/24 2.7s} 43. h3 {+1.45/22 1.2s} Kb6 {-2.43/21 0.53s}
44. b4 {+1.36/24 0.76s} Ne8 {-2.97/21 0.71s} 45. Kc4 {+1.24/22 0.74s}
cxb4 {-2.78/21 0.56s} 46. Kxb4 {+0.91/22 0.82s} Nf6 {-2.13/21 0.76s}
47. a5+ {+2.23/20 0.82s} Ka7 {-3.14/21 0.85s} 48. Bc6 {+2.76/24 0.66s}
Ka6 {-3.71/23 1.5s} 49. Bb5+ {+3.80/20 0.83s} Ka7 {-4.61/21 1.0s}
50. Bc6 {0.00/4 0s} Ka6 {0.00/4 0.001s} 51. Bb5+ {0.00/4 0.001s}
Ka7 {0.00/4 0.001s} 52. Bd3 {+3.81/22 1.1s} Kb8 {-4.46/21 1.3s}
53. Kc5 {+4.97/22 1.4s} Kc7 {-6.08/20 1.0s} 54. Bf5 {+5.07/21 0.88s}
e4 {-6.14/19 1.1s} 55. fxe4 {+6.00/23 1.0s} f3 {-6.42/20 0.79s}
56. e5 {+6.46/23 1.6s} f2 {-6.76/20 0.85s} 57. Bd3 {+7.32/19 1.2s}
Ne8 {-7.49/20 1.2s} 58. Kd5 {+8.22/18 0.54s} Ng7 {-8.31/18 1.0s}
59. e6 {+9.24/21 1.7s} h5 {-8.70/19 0.80s} 60. gxh5 {+9.97/20 1.1s}
Nxh5 {-11.19/21 2.3s} 61. Ke5 {+10.32/19 0.77s} Ng7 {-11.46/17 0.80s}
62. e7 {+10.93/19 1.3s} Ne8 {-12.48/18 1.4s, White wins by adjudication} 1-0

[Event "My Tournament"]
[Site "?"]
[Date "2023.08.25"]
[Round "2"]
[White "CSTal 2.00NN x64 1CPU"]
[Black "Rebel EAS x64 1CPU"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-25T20.727 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-25T20.425 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "110"]
[Termination "adjudication"]
[TimeControl "10+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {book} Nd7 {book} 6. Nxf7 {book}
Kxf7 {-1.71/16 0.71s} 7. Qh5+ {+1.47/16 0.59s} Ke6 {-1.34/19 1.2s}
8. c4 {+1.93/18 1.5s} N5f6 {-2.24/16 2.0s} 9. d5+ {+1.19/16 1.9s}
Kd6 {-1.68/17 1.0s} 10. Qf7 {+1.19/17 1.1s} Ne5 {-2.12/17 1.3s}
11. Bf4 {+2.61/19 0.95s} g5 {-2.61/17 0.92s} 12. c5+ {+1.67/16 1.0s}
Kxc5 {-2.90/18 0.70s} 13. Bxe5 {+2.18/18 1.0s} Qxd5 {-2.65/18 2.2s}
14. Qxd5+ {+2.11/17 0.91s} Kxd5 {-2.52/18 1.00s} 15. Bxc7 {+2.14/16 1.1s}
Ne4 {-2.44/18 0.56s} 16. f3 {+2.52/18 0.73s} Nd6 {-2.05/20 1.4s}
17. Nc3+ {+2.34/18 1.1s} Kc6 {-2.27/19 1.3s} 18. Nb5 {+2.28/20 1.1s}
Be6 {-2.21/19 0.69s} 19. h4 {+2.27/19 1.1s} g4 {-2.20/19 1.2s}
20. Bxd6 {+2.59/19 0.71s} exd6 {-1.92/19 2.5s} 21. Nd4+ {+2.45/18 1.1s}
Kd5 {-1.86/18 0.80s} 22. Nxe6 {+2.17/18 1.2s} Kxe6 {-1.85/18 0.89s}
23. fxg4 {+2.53/19 0.89s} Bg7 {-1.85/16 0.54s} 24. Bc4+ {+2.44/14 0.88s}
Ke7 {-1.76/17 1.1s} 25. O-O {+2.22/15 0.90s} Raf8 {-1.93/18 1.0s}
26. Rae1+ {+2.21/15 1.2s} Be5 {-1.94/18 0.66s} 27. Rf3 {+2.38/16 0.78s}
Rxf3 {-1.95/17 0.70s} 28. gxf3 {+2.43/17 0.71s} Rf8 {-2.05/17 0.85s}
29. Bd5 {+2.22/19 1.2s} Rf4 {-2.02/18 1.2s} 30. Bxb7 {+2.49/21 1.3s}
a5 {-1.83/15 0.63s} 31. h5 {+2.26/15 0.80s} Rb4 {-1.97/15 0.96s}
32. Bc6 {+2.90/16 1.0s} h6 {-2.11/17 0.61s} 33. b3 {+2.75/18 0.72s}
Kf6 {-1.93/19 0.89s} 34. Kf2 {+2.61/19 0.70s} Kg5 {-2.05/18 0.78s}
35. Ke3 {+3.28/21 1.7s} Bf4+ {-2.03/17 0.68s} 36. Kd3 {+3.16/20 0.79s}
Be5 {-2.20/22 0.73s} 37. Ke3 {0.00/4 0.002s} Bf4+ {0.00/4 0.002s}
38. Kd3 {0.00/4 0.002s} Be5 {0.00/4 0.001s} 39. Re4 {+3.64/22 2.0s}
Rxe4 {-2.19/22 1.0s} 40. Bxe4 {+4.22/23 1.2s} Bb2 {-2.37/22 1.3s}
41. Kc4 {+4.98/24 1.1s} Ba3 {-3.60/22 1.1s} 42. Kb5 {+4.58/24 0.88s}
Bb4 {-4.02/24 0.90s} 43. a3 {+5.07/24 1.4s} Bd2 {-4.11/24 1.3s}
44. Kc4 {+4.93/23 0.95s} Kf6 {-4.53/22 0.86s} 45. b4 {+5.24/21 0.80s}
axb4 {-3.57/23 1.0s} 46. a4 {+5.64/24 0.88s} Be3 {-4.68/23 2.5s}
47. Kxb4 {+6.99/21 0.78s} Ke5 {-5.88/22 1.6s} 48. a5 {+7.99/21 0.92s}
d5 {-6.41/20 0.44s} 49. Bf5 {+8.64/21 0.88s} Kf4 {-6.79/22 1.2s}
50. a6 {+9.06/23 1.1s} Ke5 {-7.71/22 0.70s} 51. Kb5 {+10.19/21 1.1s}
Kd6 {-9.39/21 3.1s} 52. g5 {+11.52/21 0.78s} hxg5 {-9.02/22 2.7s}
53. h6 {+14.37/23 1.3s} Bd4 {-11.27/20 0.68s} 54. h7 {+15.48/23 2.2s}
Kc7 {-11.24/21 1.0s} 55. Bd3 {+16.07/23 1.1s}
Bb2 {-11.84/20 0.89s, White wins by adjudication} 1-0

[Event "My Tournament"]
[Site "?"]
[Date "2023.08.25"]
[Round "3"]
[White "Rebel EAS x64 1CPU"]
[Black "CSTal 2.00NN x64 1CPU"]
[Result "1/2-1/2"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-25T20.252 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-25T20.559 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "125"]
[TimeControl "10+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {book} Nd7 {book} 6. Nxf7 {book}
Kxf7 {-0.98/14 1.2s} 7. Qh5+ {+2.54/16 1.2s} Ke6 {-1.34/18 0.97s}
8. c4 {+2.56/17 1.3s} Nb4 {-1.70/19 2.1s} 9. a3 {+1.93/17 0.85s}
Nc2+ {-1.85/18 1.3s} 10. Kd1 {+2.19/18 0.92s} Nf6 {-1.79/19 0.82s}
11. Qe5+ {+2.37/18 1.3s} Kf7 {-1.79/19 0.71s} 12. Kxc2 {+2.46/20 1.6s}
g6 {-1.96/18 1.4s} 13. Nc3 {+2.14/17 1.1s} Bg7 {-1.66/18 1.3s}
14. Be3 {+1.88/17 2.5s} Rf8 {-1.62/18 1.2s} 15. Rd1 {+1.90/16 1.0s}
Kg8 {-1.18/13 0.57s} 16. Bd3 {+2.19/16 0.80s} c6 {-0.95/14 1.3s}
17. Qc5 {+2.12/14 1.2s} Ng4 {-1.22/14 0.91s} 18. Rd2 {+1.66/14 0.69s}
Bd7 {-1.27/13 0.31s} 19. Qb4 {+1.24/14 1.6s} b6 {-1.14/14 0.98s}
20. Be4 {+1.45/15 1.9s} Rb8 {-1.11/13 0.77s} 21. Kb1 {+0.95/15 1.7s}
Kh8 {-0.60/15 1.1s} 22. h4 {+0.90/13 0.69s} c5 {-0.54/15 1.6s}
23. Qb3 {+0.96/16 0.69s} cxd4 {-0.59/18 1.6s} 24. Bxd4 {+0.62/14 0.33s}
Bxd4 {-0.55/17 1.0s} 25. Rxd4 {+0.62/14 0.78s} e5 {-0.55/14 0.85s}
26. Rd2 {+0.58/15 0.54s} Nxf2 {+0.29/15 0.79s} 27. Re1 {+0.51/15 0.51s}
Nxe4 {0.00/16 0.57s} 28. Nxe4 {-0.02/13 0.79s} Qxh4 {+0.27/15 1.1s}
29. g3 {-0.20/13 0.86s} Qg4 {+0.12/14 0.95s} 30. Nf2 {0.00/17 1.8s}
Qf5+ {0.00/16 0.83s} 31. Ka1 {-0.01/14 0.97s} Kg8 {0.00/17 0.63s}
32. Qc3 {0.00/15 0.99s} Rbe8 {+0.36/17 1.8s} 33. Ne4 {0.00/15 1.2s}
Re7 {+0.51/16 1.3s} 34. Rf2 {0.00/17 0.91s} Qe6 {+0.51/15 0.80s}
35. Rd2 {0.00/20 0.92s} Qf5 {0.00/4 0.001s} 36. Rf2 {0.00/4 0.001s}
Qe6 {0.00/4 0.001s} 37. Rd2 {0.00/4 0.002s} Qf7 {+0.68/16 0.75s}
38. c5 {-0.34/17 2.5s} bxc5 {+0.67/16 0.78s} 39. Qxc5 {-0.10/16 0.94s}
Bf5 {+0.54/16 0.82s} 40. Nd6 {0.00/17 0.62s} Qe6 {+0.50/18 0.94s}
41. Rd5 {0.00/20 0.94s} Rc7 {-0.06/18 1.5s} 42. Qxc7 {0.00/22 0.82s}
Qxd5 {0.00/20 0.72s} 43. Nxf5 {+0.35/24 3.2s} Rxf5 {0.00/24 1.5s}
44. Qb8+ {+0.09/16 0.91s} Rf8 {0.00/26 0.81s} 45. Qxa7 {+0.38/14 0.41s}
h5 {0.00/24 3.6s} 46. Qb6 {0.00/18 1.0s} Kg7 {+0.03/15 0.69s}
47. Qc7+ {-0.38/16 0.62s} Rf7 {+0.10/18 0.57s} 48. Qxe5+ {0.00/18 0.66s}
Qxe5 {0.00/19 0.64s} 49. Rxe5 {0.00/21 0.63s} Rf3 {0.00/23 1.0s}
50. Re1 {-0.07/19 0.55s} Rxg3 {0.00/24 0.66s} 51. Ka2 {0.00/23 1.3s}
h4 {0.00/26 1.1s} 52. b4 {0.00/24 0.73s} h3 {0.00/24 1.1s}
53. b5 {0.00/25 0.69s} h2 {0.00/22 0.54s} 54. Rh1 {0.00/27 0.94s}
Rh3 {0.00/26 0.82s} 55. b6 {0.00/29 1.6s} Rh8 {0.00/28 1.1s}
56. Kb3 {0.00/29 0.58s} g5 {0.00/28 1.4s} 57. b7 {0.00/29 0.65s}
Rb8 {0.00/30 0.98s} 58. Rxh2 {0.00/29 1.2s} Rxb7+ {0.00/29 0.31s}
59. Kc4 {0.00/28 0.74s} Rc7+ {0.00/29 0.94s} 60. Kb4 {0.00/27 0.79s}
Rb7+ {0.00/31 1.2s} 61. Kc4 {0.00/4 0.001s} Rc7+ {0.00/4 0.001s}
62. Kb4 {0.00/4 0.001s} Rb7+ {0.00/4 0.001s}
63. Kc4 {0.00/35 2.0s, Draw by 3-fold repetition} 1/2-1/2

[Event "My Tournament"]
[Site "?"]
[Date "2023.08.25"]
[Round "4"]
[White "CSTal 2.00NN x64 1CPU"]
[Black "Rebel EAS x64 1CPU"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-25T20.170 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-25T20.743 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "146"]
[Termination "adjudication"]
[TimeControl "10+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {book} Nd7 {book} 6. Nxf7 {+2.09/17 1.0s}
Kxf7 {-2.07/17 0.96s} 7. Qh5+ {+1.97/18 1.1s} Ke6 {-2.17/16 1.0s}
8. c4 {+1.56/19 2.5s} N5f6 {-2.31/17 1.4s} 9. d5+ {+2.72/18 2.4s}
Kd6 {-2.17/15 1.5s} 10. Qf7 {+2.56/17 0.71s} Ne5 {-2.36/17 1.7s}
11. Bf4 {+2.76/17 0.69s} g5 {-3.02/17 1.6s} 12. c5+ {+1.74/15 0.91s}
Kxc5 {-2.04/18 0.83s} 13. Bxe5 {+1.85/18 0.83s} Qxd5 {-2.46/19 2.7s}
14. b4+ {+1.87/17 0.72s} Kc6 {-2.32/17 1.8s} 15. b5+ {+2.30/18 1.7s}
Kc5 {-2.71/17 0.50s} 16. Qxd5+ {+2.17/18 1.2s} Kxd5 {-2.33/15 0.69s}
17. Bxc7 {+2.12/18 2.3s} Ne8 {-2.42/17 0.89s} 18. Nc3+ {+1.98/16 0.67s}
Ke6 {-2.27/17 0.69s} 19. Bc4+ {+2.14/15 0.71s} Kf5 {-2.28/19 2.1s}
20. Bg3 {+2.06/18 1.5s} Kg6 {-2.16/19 0.83s} 21. Nd5 {+1.90/17 1.2s}
Bf5 {-1.83/20 0.97s} 22. Be5 {+2.66/16 0.71s} e6 {-1.70/18 0.42s}
23. Bxh8 {+2.26/16 0.61s} exd5 {-1.81/18 0.67s} 24. Be2 {+1.92/16 0.96s}
Bb4+ {-2.21/18 0.92s} 25. Kf1 {+2.26/16 0.79s} Nf6 {-2.49/18 0.81s}
26. Bxf6 {+2.54/17 0.88s} Kxf6 {-2.43/19 0.76s} 27. Rd1 {+2.90/16 0.51s}
Rc8 {-2.48/19 1.1s} 28. Rxd5 {+3.18/17 1.1s} h5 {-2.49/19 1.1s}
29. Bxh5 {+2.92/17 1.0s} g4 {-2.16/19 1.9s} 30. Rd1 {+3.42/18 0.76s}
Rc3 {-2.99/16 0.68s} 31. h3 {+3.80/17 0.75s} gxh3 {-3.01/16 0.79s}
32. gxh3 {+4.03/17 0.73s} Bxh3+ {-3.02/15 0.72s} 33. Kg1 {+4.08/15 0.42s}
Be6 {-2.88/18 2.3s} 34. Kg2 {+4.30/16 1.5s} Bxa2 {-3.02/15 1.3s}
35. Bf3 {+3.61/16 0.94s} Bc5 {-3.38/15 0.80s} 36. Rc1 {+5.15/20 0.67s}
Rxc1 {-3.45/20 0.62s} 37. Rxc1 {+5.10/21 0.96s} b6 {-3.55/20 0.93s}
38. Ra1 {+5.74/22 0.85s} Be6 {-3.67/21 0.87s} 39. Rxa7 {+5.88/21 0.68s}
Ke5 {-3.75/20 0.86s} 40. Ra4 {+5.88/20 0.95s} Bb3 {-3.71/19 0.45s}
41. Rh4 {+6.01/22 0.87s} Be7 {-3.84/20 0.92s} 42. Rh7 {+6.08/23 0.68s}
Bd6 {-3.90/20 0.75s} 43. Rb7 {+6.12/23 0.74s} Bc5 {-3.90/20 0.56s}
44. Rd7 {+6.09/27 0.74s} Be6 {-3.80/22 0.49s} 45. Rd8 {+6.15/28 2.4s}
Kf4 {-3.84/21 0.89s} 46. Bc6 {+6.10/24 0.54s} Bf5 {-3.85/23 0.65s}
47. Rh8 {+6.13/26 1.1s} Be7 {-3.87/22 0.84s} 48. Ra8 {+6.15/24 0.89s}
Bd6 {-3.96/23 0.73s} 49. Ra4+ {+6.29/18 0.90s} Kg5 {-3.97/23 0.83s}
50. Bd7 {+6.50/21 0.78s} Bc2 {-3.84/22 0.66s} 51. Rg4+ {+6.65/21 1.4s}
Kf6 {-3.97/21 1.6s} 52. f4 {+6.34/23 1.3s} Bb4 {-4.13/18 1.3s}
53. Rg5 {+6.50/20 0.78s} Bb3 {-4.11/18 0.95s} 54. Re5 {+6.71/23 0.86s}
Ba2 {-4.10/21 0.65s} 55. Kh3 {+6.64/22 0.96s} Bb3 {-4.22/23 2.3s}
56. Kg3 {+6.58/24 1.2s} Bg8 {-4.22/22 0.79s} 57. Bc6 {+6.50/21 0.69s}
Bc3 {-4.18/20 0.55s} 58. Rh5 {+6.59/21 0.90s} Bc4 {-4.10/20 0.69s}
59. Rh1 {+6.70/22 1.2s} Be2 {-4.17/21 1.5s} 60. Kf2 {+6.56/23 0.83s}
Bg4 {-4.32/18 0.54s} 61. Bg2 {+6.58/21 1.5s} Bd2 {-4.13/20 0.73s}
62. Rh6+ {+7.20/19 0.97s} Kg7 {-4.71/16 0.90s} 63. Rc6 {+7.83/19 0.74s}
Ba5 {-5.16/18 1.1s} 64. Be4 {+8.19/17 0.94s} Bh5 {-5.70/18 0.83s}
65. f5 {+9.12/19 0.79s} Be8 {-6.08/18 0.70s} 66. f6+ {+10.06/21 0.71s}
Kf8 {-6.90/21 0.94s} 67. Rc8 {+10.74/24 1.1s} Kf7 {-7.74/23 1.2s}
68. Bd5+ {+10.89/26 0.72s} Kxf6 {-7.92/24 0.79s} 69. Rxe8 {+10.74/28 1.5s}
Bb4 {-8.25/23 1.3s} 70. Kf3 {+11.26/25 1.6s} Bc5 {-8.38/22 0.83s}
71. Ke4 {+11.53/22 0.67s} Kg5 {-8.41/23 1.3s} 72. Rc8 {+14.11/21 0.70s}
Bb4 {-8.43/22 0.51s} 73. Rc6 {+16.44/26 2.1s}
Ba5 {-9.54/26 2.1s, White wins by adjudication} 1-0

[Event "My Tournament"]
[Site "?"]
[Date "2023.08.25"]
[Round "5"]
[White "Rebel EAS x64 1CPU"]
[Black "CSTal 2.00NN x64 1CPU"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-25T20.174 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-25T20.276 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "76"]
[Termination "adjudication"]
[TimeControl "10+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {book} Nd7 {book} 6. Nxf7 {+1.38/17 0.65s}
Kxf7 {-1.86/19 0.83s} 7. Qh5+ {+1.44/15 0.39s} Ke6 {-1.83/19 2.0s}
8. c4 {+1.83/18 1.6s} Nb4 {-2.07/20 2.0s} 9. a3 {+1.78/17 1.3s}
Nc2+ {-1.60/19 1.8s} 10. Kd1 {+2.51/18 1.1s} Nf6 {-1.74/18 1.1s}
11. Qe5+ {+2.10/18 1.3s} Kf7 {-2.09/17 0.84s} 12. Kxc2 {+2.40/18 0.99s}
g6 {-2.12/19 1.2s} 13. Nc3 {+2.05/18 1.0s} Bg7 {-2.17/18 0.67s}
14. Be3 {+2.23/18 1.2s} Rf8 {-1.39/15 0.74s} 15. Bd3 {+1.90/16 1.6s}
Kg8 {-1.45/14 1.0s} 16. Rad1 {+1.72/15 1.0s} Ng4 {-1.57/14 0.95s}
17. Qg3 {+2.13/15 0.90s} Nxe3+ {-1.27/16 0.97s} 18. fxe3 {+2.12/16 1.8s}
c5 {-1.38/17 0.83s} 19. Rhe1 {+2.29/15 1.3s} cxd4 {-0.69/14 0.72s}
20. exd4 {+2.47/16 1.3s} Qxd4 {-1.90/15 1.1s} 21. Rxe7 {+1.62/16 2.0s}
Bd7 {-1.58/15 1.3s} 22. Be4 {+3.71/16 1.6s} Ba4+ {-3.65/17 0.95s}
23. Nxa4 {+3.71/17 0.63s} Rf2+ {-4.35/18 1.3s} 24. Qxf2 {+3.84/19 0.91s}
Qxf2+ {-4.46/18 0.76s} 25. Rd2 {+3.35/19 0.58s} Qh4 {-4.53/16 0.40s}
26. Rdd7 {+4.01/18 0.78s} Bf6 {-4.79/17 0.95s} 27. Bd5+ {+4.91/17 1.5s}
Kh8 {-5.01/17 1.5s} 28. Rf7 {+4.62/18 0.60s} Rb8 {-4.97/17 0.78s}
29. Nc3 {+4.51/17 0.82s} Bxc3 {-5.29/17 0.97s} 30. Kxc3 {+5.36/18 1.5s}
Qxh2 {-5.12/17 0.70s} 31. Kb3 {+5.79/19 1.8s} b6 {-5.37/16 0.87s}
32. Rxa7 {+6.36/18 0.79s} Qh6 {-6.88/18 0.92s} 33. Rad7 {+6.91/17 0.59s}
Qh4 {-6.95/17 0.73s} 34. Rfe7 {+8.47/18 0.68s} Rc8 {-9.06/17 0.99s}
35. Ka4 {+11.27/20 2.2s} Rb8 {-10.35/19 0.83s} 36. b4 {+11.62/18 0.54s}
Qh5 {-11.43/21 0.94s} 37. g4 {+13.34/20 0.76s} Qh4 {-13.24/19 0.82s}
38. Kb5 {+14.37/22 0.63s} Qh6 {-16.48/20 0.99s, White wins by adjudication} 1-0

[Event "My Tournament"]
[Site "?"]
[Date "2023.08.25"]
[Round "6"]
[White "CSTal 2.00NN x64 1CPU"]
[Black "Rebel EAS x64 1CPU"]
[Result "1/2-1/2"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-25T20.633 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-25T20.137 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "173"]
[Termination "adjudication"]
[TimeControl "10+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {book} Nd7 {book} 6. Nxf7 {book}
Kxf7 {-0.55/14 0.35s} 7. Qh5+ {+1.74/16 1.1s} Ke6 {-1.73/16 0.89s}
8. c4 {+1.67/18 0.94s} N5f6 {-0.46/16 0.91s} 9. d5+ {+2.11/17 0.96s}
Kd6 {-0.49/20 1.6s} 10. Qf7 {+1.74/15 0.59s} Ne5 {-2.02/16 0.96s}
11. Bf4 {+2.10/18 0.83s} g5 {-2.16/18 1.0s} 12. c5+ {+1.86/19 2.6s}
Kxc5 {-2.33/19 1.5s} 13. Bxe5 {+1.53/15 0.43s} Qxd5 {-2.13/19 2.3s}
14. b4+ {+2.23/15 0.85s} Kc6 {-2.57/16 1.1s} 15. b5+ {+2.25/17 0.78s}
Kc5 {-2.52/17 1.5s} 16. Qxd5+ {+1.81/17 1.2s} Kxd5 {-2.56/17 0.96s}
17. Bxc7 {+2.01/19 1.6s} Ne4 {-2.53/16 0.83s} 18. Nd2 {+1.90/16 1.0s}
Nd6 {-2.56/17 0.99s} 19. Rd1 {+2.07/17 1.3s} Bg4 {-2.43/15 0.93s}
20. f3 {+2.62/17 0.89s} Bf5 {-2.63/15 0.79s} 21. Ne4+ {+2.36/17 1.0s}
Ke6 {-2.10/17 0.71s} 22. Bxd6 {+2.45/18 0.88s} exd6 {-1.86/18 1.5s}
23. Bc4+ {+2.26/17 1.0s} Kd7 {-1.79/17 0.90s} 24. Bd5 {+2.26/19 1.2s}
Bxe4 {-1.67/16 0.38s} 25. fxe4 {+2.36/20 1.0s} Bg7 {-1.99/19 1.0s}
26. Bxb7 {+2.09/18 1.1s} Raf8 {-2.15/19 0.65s} 27. Bd5 {+1.93/16 1.0s}
Rf4 {-1.36/18 0.83s} 28. Rf1 {+1.96/18 1.1s} Rxf1+ {-0.96/16 0.91s}
29. Kxf1 {+1.31/19 1.1s} Rc8 {-0.89/16 0.87s} 30. a4 {+1.35/15 0.83s}
Rc2 {-1.14/18 1.3s} 31. Rd3 {+1.00/16 1.1s} Kc7 {-0.81/18 0.92s}
32. a5 {+1.19/15 0.57s} Rc3 {-0.64/18 1.0s} 33. Ke2 {+1.03/19 1.6s}
Be5 {-0.70/20 0.77s} 34. Rxc3+ {+1.26/21 0.82s} Bxc3 {-0.57/20 0.70s}
35. a6 {+1.07/22 0.71s} h5 {-0.55/20 0.99s} 36. Kd3 {+1.24/19 0.70s}
Be5 {-0.78/23 1.7s} 37. h3 {+1.43/22 0.68s} h4 {-0.72/27 0.87s}
38. Bf7 {+1.41/25 0.79s} Kb6 {-0.63/26 0.49s} 39. Kc4 {+1.10/25 0.64s}
Bh2 {-0.43/25 0.68s} 40. Be8 {+1.15/27 0.81s} Bg3 {-0.48/30 0.97s}
41. Kd5 {+1.04/26 0.80s} Bh2 {-0.44/29 0.68s} 42. Kc4 {0.00/4 0.001s}
Bg3 {0.00/4 0.001s} 43. Kd5 {0.00/4 0.001s} Bh2 {0.00/4 0.001s}
44. Ke6 {+0.81/23 0.87s} Bf4 {-0.43/29 0.75s} 45. Bc6 {+0.88/26 1.0s}
Kc5 {-0.39/29 1.1s} 46. Kf5 {+0.94/26 0.78s} Kb6 {-0.33/28 0.86s}
47. Ke6 {0.00/4 0.001s} Kc5 {0.00/4 0.001s} 48. Kf5 {0.00/4 0.001s}
Kb6 {0.00/4 0s} 49. Kg6 {+0.88/30 1.1s} Bd2 {-0.34/30 1.00s}
50. Be8 {+0.87/28 0.86s} Be3 {-0.31/30 0.97s} 51. Kf7 {+0.81/28 0.98s}
Bf4 {-0.34/29 0.96s} 52. Bc6 {+0.83/30 1.3s} Kc5 {-0.36/29 1.6s}
53. Ke8 {+0.88/28 0.85s} Bg3 {-0.36/29 1.0s} 54. Ke7 {+0.87/29 1.5s}
Kb6 {-0.31/28 1.0s} 55. Bd7 {+0.83/29 1.1s} Bf4 {-0.28/31 1.1s}
56. Kf8 {+0.85/27 1.2s} Kc5 {-0.33/27 0.81s} 57. Kg7 {+0.87/29 1.0s}
Kb6 {-0.31/30 0.80s} 58. Kf8 {0.00/4 0.001s} Kc5 {0.00/4 0.001s}
59. Kg7 {0.00/4 0.001s} Kb6 {0.00/4 0s} 60. Be8 {+0.86/30 1.3s}
Bd2 {-0.31/31 2.9s} 61. Kg6 {0.00/4 0.001s} Be3 {0.00/4 0.001s}
62. Kf7 {0.00/4 0.001s} Bf4 {0.00/4 0.001s} 63. Kg7 {0.00/4 0.001s}
Bd2 {0.00/4 0.001s} 64. Kf6 {+0.87/31 1.3s} Bc1 {-0.31/31 1.4s}
65. Bc6 {+0.87/33 2.0s} Bf4 {-0.25/32 1.7s} 66. Kg6 {0.00/4 0.001s}
Bd2 {0.00/4 0.001s} 67. Kf7 {+0.86/32 1.1s} Kc5 {-0.26/30 1.1s}
68. Ke7 {+0.84/34 4.6s} Bf4 {-0.31/31 2.4s} 69. Ke8 {0.00/4 0.001s}
Bg3 {0.00/4 0s} 70. Ke7 {0.00/4 0.001s} Kb6 {0.00/4 0.001s}
71. Bd7 {0.00/4 0.001s} Bf4 {0.00/4 0s} 72. Ke6 {+0.77/29 2.2s}
Kc5 {-0.22/30 1.1s} 73. Bc6 {+0.70/27 1.2s} Be5 {-0.09/29 1.6s}
74. Kf5 {+0.72/28 0.93s} Bf4 {-0.03/30 3.1s} 75. Ke6 {0.00/4 0.004s}
Be5 {0.00/4 0.001s} 76. Kf5 {0.00/4 0.001s} Bf4 {0.00/4 0.001s}
77. Be8 {+0.75/25 1.2s} Be3 {-0.06/29 1.9s} 78. Kg4 {+0.52/26 1.1s}
Bf4 {-0.13/25 0.82s} 79. Kf5 {0.00/4 0.003s} Be3 {0.00/4 0.001s}
80. Kg4 {0.00/4 0.001s} Bf4 {0.00/4 0.001s} 81. Kf3 {+0.40/23 1.3s}
Bg3 {-0.07/29 2.3s} 82. Bd7 {+0.40/25 2.0s} Bh2 {-0.13/28 1.3s}
83. Kg4 {+0.17/25 1.8s} Bf4 {-0.06/31 1.7s} 84. Be8 {0.00/28 1.0s}
Kb6 {-0.03/26 1.1s} 85. Kf3 {0.00/29 0.76s} Bg3 {0.00/32 1.0s}
86. Ke3 {0.00/35 3.6s} Kc7 {0.00/36 1.3s}
87. Kd4 {0.00/37 1.4s, Draw by adjudication} 1/2-1/2

[Event "My Tournament"]
[Site "?"]
[Date "2023.08.25"]
[Round "7"]
[White "Rebel EAS x64 1CPU"]
[Black "CSTal 2.00NN x64 1CPU"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-25T20.693 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-25T20.190 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "144"]
[Termination "adjudication"]
[TimeControl "10+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {book} Nd7 {book} 6. Nxf7 {book}
Kxf7 {-1.66/18 0.70s} 7. Qh5+ {+1.98/16 0.94s} Ke6 {-1.56/20 1.4s}
8. c4 {+1.80/18 1.2s} Nb4 {-1.69/20 1.7s} 9. a3 {+2.20/18 1.4s}
Nc2+ {-1.93/20 0.91s} 10. Kd1 {+2.00/19 1.2s} Nf6 {-1.67/19 1.1s}
11. Qe5+ {+2.56/17 1.2s} Kf7 {-1.84/18 0.59s} 12. Kxc2 {+2.20/17 0.77s}
g6 {-2.10/18 1.5s} 13. Bd3 {+2.43/19 2.7s} Bg7 {-1.74/18 0.89s}
14. Rd1 {+2.52/16 0.93s} Rf8 {-1.90/15 1.6s} 15. f3 {+2.45/16 0.69s}
Nh5 {-1.82/16 1.6s} 16. Qc5 {+2.76/16 1.5s} b6 {-1.54/14 0.80s}
17. Qg5 {+2.80/17 0.68s} Bf6 {-2.07/15 1.3s} 18. Qh6 {+2.95/17 0.98s}
Kg8 {-1.82/16 1.2s} 19. g4 {+2.54/17 0.68s} Bg7 {-1.80/15 0.79s}
20. Qg5 {+1.99/15 1.1s} Nf6 {-1.57/16 0.96s} 21. Qe3 {+2.26/17 2.0s}
b5 {-1.27/15 1.0s} 22. Nc3 {+1.65/15 1.4s} bxc4 {-1.36/14 0.95s}
23. Bxc4+ {+1.88/15 1.1s} Kh8 {-1.66/16 0.81s} 24. a4 {+1.52/15 0.88s}
c6 {-1.86/16 1.2s} 25. Ra3 {+2.11/16 0.93s} Nd5 {-1.90/16 1.2s}
26. Qe4 {+1.76/17 0.97s} Qc7 {-1.40/16 1.1s} 27. Kb1 {+1.62/16 0.71s}
Nb6 {-1.59/16 0.76s} 28. Be6 {+1.55/15 1.3s} Rb8 {-1.90/16 1.5s}
29. Ba2 {+1.60/15 0.89s} Qd6 {-1.47/13 0.86s} 30. Ka1 {+1.55/16 1.1s}
Nd5 {-1.55/16 0.89s} 31. Nxd5 {+1.24/14 0.63s} cxd5 {-1.63/17 0.68s}
32. Bxd5 {+1.60/14 0.79s} Rb4 {-1.36/14 1.3s} 33. a5 {+1.22/14 1.2s}
Rd8 {-0.76/14 1.1s} 34. Rc3 {+1.22/14 0.91s} Rb5 {-0.88/14 0.69s}
35. Bc4 {+1.19/12 0.19s} Bb7 {-0.91/15 2.0s} 36. Qc2 {+1.48/15 1.4s}
Rxa5+ {-0.95/15 1.5s} 37. Kb1 {+1.26/15 0.93s} Bd5 {-0.92/16 0.91s}
38. Bd2 {+1.32/15 0.88s} Qc6 {-0.88/14 0.86s} 39. h4 {+1.07/15 1.0s}
Bf6 {-1.02/14 1.0s} 40. g5 {+1.72/15 0.79s} Bg7 {-0.86/14 0.64s}
41. Re1 {+1.95/17 0.69s} Qa4 {-2.06/15 0.77s} 42. Qxa4 {+1.98/17 1.0s}
Rxa4 {-2.61/18 1.1s} 43. b3 {+2.38/17 0.73s} Rb4 {-2.67/18 1.4s}
44. Bxd5 {+2.57/18 1.3s} Rxd4 {-3.04/17 0.73s} 45. Rc7 {+2.31/19 1.0s}
R4xd5 {-2.89/19 1.00s} 46. Rexe7 {+2.11/17 1.2s} Rxd2 {-2.88/22 0.98s}
47. Rxg7 {+2.64/16 0.90s} Rf2 {-3.23/16 0.83s} 48. Rxh7+ {+3.54/16 2.6s}
Kg8 {-3.23/13 0.23s} 49. Rhg7+ {+3.56/17 1.3s} Kh8 {-3.59/16 1.6s}
50. Rxg6 {+3.65/17 0.63s} Rd1+ {-3.89/14 0.59s} 51. Rc1 {+3.63/15 0.17s}
Rd3 {-3.87/16 1.9s} 52. Rc8+ {+3.77/15 0.75s} Kh7 {-4.15/17 0.89s}
53. Rh6+ {+3.84/18 2.8s} Kg7 {-4.28/12 0.22s} 54. Rc7+ {+3.77/15 0.67s}
Kg8 {-4.02/16 0.96s} 55. Rg6+ {+3.84/15 0.48s} Kh8 {-4.11/16 1.2s}
56. Rc8+ {0.00/4 0.001s} Kh7 {0.00/4 0.001s} 57. Rh6+ {0.00/4 0.001s}
Kg7 {0.00/4 0.001s} 58. Rc7+ {0.00/4 0.001s} Kg8 {0.00/4 0.001s}
59. Rg6+ {0.00/4 0.007s} Kh8 {0.00/4 0.001s} 60. b4 {+3.77/18 1.1s}
Rb3+ {-4.25/16 1.3s} 61. Kc1 {+4.07/18 1.2s} Rxb4 {-4.41/17 0.96s}
62. Rf6 {+4.26/20 2.7s} Rb8 {-4.49/17 0.68s} 63. h5 {+4.38/16 0.73s}
Re8 {-4.73/17 2.4s} 64. Rc2 {+4.43/18 0.93s} Rf1+ {-5.06/15 0.52s}
65. Kb2 {+4.57/14 0.36s} a5 {-5.23/16 1.5s} 66. h6 {+4.67/17 2.5s}
Rb8+ {-5.32/15 1.0s} 67. Ka2 {+4.98/15 1.3s} Rg1 {-5.48/14 0.64s}
68. g6 {+5.55/14 0.89s} Kg8 {-8.59/14 1.7s} 69. Rfc6 {+8.18/15 0.77s}
Re8 {-11.67/17 0.93s} 70. Rc8 {+11.19/17 1.7s} Rxg6 {-13.94/19 0.88s}
71. Rxe8+ {+11.46/14 0.53s} Kh7 {-14.94/17 0.87s} 72. Rh2 {+11.84/16 0.86s}
Rd6 {-23.05/17 2.7s, White wins by adjudication} 1-0

[Event "My Tournament"]
[Site "?"]
[Date "2023.08.25"]
[Round "10"]
[White "CSTal 2.00NN x64 1CPU"]
[Black "Rebel EAS x64 1CPU"]
[Result "1-0"]
[ECO "B04"]
[GameDuration "00"]
[GameEndTime "2023-08-25T20.391 Mitteleuropäische Sommerzeit"]
[GameStartTime "2023-08-25T20.733 Mitteleuropäische Sommerzeit"]
[Opening "Alekhine's defense"]
[PlyCount "15"]
[Termination "abandoned"]
[TimeControl "10+1"]
[Variation "Modern, Larsen Variation"]

1. e4 {book} Nf6 {book} 2. e5 {book} Nd5 {book} 3. d4 {book} d6 {book}
4. Nf3 {book} dxe5 {book} 5. Nxe5 {book} Nd7 {book} 6. Nxf7 {book}
Kxf7 {-2.60/16 0.83s} 7. Qh5+ {+1.28/16 1.2s} Ke6 {-2.02/17 1.2s}
8. c4 {+1.74/17 0.92s, Black disconnects} 1-0

weird how the fails are different points in the game.

Q. for experts - if I put info string debug messages into the code, will they appear in cutechess debug list? and how does cutechess debug handle multiple concurrencies?

How to reproduce the crash in Rebel-EAS without GUI:

Code:

uci
position startpos moves e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 d6e5 f3e5 b8d7 e5f7 e8f7
go depth 30
...
info depth 22 seldepth 44 time 3375 nodes 3282999 score cp 230 pv d1h5 f7e6 c2c4 d5b4 a2a3 b4c2 e1d1 d7f6 h5e5 e6f7 d1c2 g7g6 b1c3 f8g7 c1e3 h8f8 f1d3 f7g8 h2h3 f6g4 e5d5 d8d5 c3d5 g4f2 h1f1 f2d3 d5e7 g8h8 c2d3 c8d7 f1f8 a8f8 hashfull 53 Knps 972740
Assertion failed: pos->pieces[us] & (ONE << to), file C:\Users\rebel\Downloads\Chess-System-Tal-2.00-main-6\nnue.cpp, line 1000

Andreas, can we hire you?

Admin wrote:

Andreas, can we hire you?

Upload your code to github and I work without payment

RubiChess wrote:

How to reproduce the crash in Rebel-EAS without GUI:

Code:

uci
position startpos moves e2e4 g8f6 e4e5 f6d5 d2d4 d7d6 g1f3 d6e5 f3e5 b8d7 e5f7 e8f7
go depth 30
...
info depth 22 seldepth 44 time 3375 nodes 3282999 score cp 230 pv d1h5 f7e6 c2c4 d5b4 a2a3 b4c2 e1d1 d7f6 h5e5 e6f7 d1c2 g7g6 b1c3 f8g7 c1e3 h8f8 f1d3 f7g8 h2h3 f6g4 e5d5 d8d5 c3d5 g4f2 h1f1 f2d3 d5e7 g8h8 c2d3 c8d7 f1f8 a8f8 hashfull 53 Knps 972740
Assertion failed: pos->pieces[us] & (ONE << to), file C:\Users\rebel\Downloads\Chess-System-Tal-2.00-main-6\nnue.cpp, line 1000

Oh, it's that little piggy, I left an assert in hoping to try and hit it again, but never did. The honour goes to Stephan. Tut-tut, asserts in release versions.

I am right in assuming it's not possible for any move to not leave the destination square occupied by the moving side's piece? Or am I being dumb.

Chris Whittington wrote:

I am right in assuming it's not possible for any move to not leave the destination square occupied by the moving side's piece? Or am I being dumb.

The assert looks reasonable.
From my experience with debugging similar problems in my engine, the position/board object is already "destroyed" at that point by an earlier action like executing illegal moves, making wrong assumptions on hash moves and things like that.

Good luck in finding the bug, should not be too difficult now.

Regards, Andreas

Check detection (before actually doing the move)
Castles is a special case because you have test if there's a path from the moved rook to the enemy king, having removed one's own king from the path.

It was failing to find horizontal (ranks) checks by castling (vertical checks were fine) because I forgot to remove the own king.
The bug was incredibly rare because it could only happen if the enemy king worked its way all the way to the own king's back rank, and the own king was still able to castle. Usually if the enemy king has travelled all that distance it is pretty likely the own king would have moved and no longer had castling rights. Hence the great rarity.

It's running 2000 games using the Stephan position only, 300 so far without breaking ...

Chris Whittington wrote:

Check detection (before actually doing the move)
Castles is a special case because you have test if there's a path from the moved rook to the enemy king, having removed one's own king from the path.

It was failing to find horizontal (ranks) checks by castling (vertical checks were fine) because I forgot to remove the own king.
The bug was incredibly rare because it could only happen if the enemy king worked its way all the way to the own king's back rank, and the own king was still able to castle. Usually if the enemy king has travelled all that distance it is pretty likely the own king would have moved and no longer had castling rights. Hence the great rarity.

It's running 2000 games using the Stephan position only, 300 so far without breaking ...

Fingers crossed!
As ever, rare bugs in chess-software are connected to castling or en passant... But good to see, the bug is finally located and (hopefully) fixed.

pohl4711 wrote:

Chris Whittington wrote:

Check detection (before actually doing the move)
Castles is a special case because you have test if there's a path from the moved rook to the enemy king, having removed one's own king from the path.

It was failing to find horizontal (ranks) checks by castling (vertical checks were fine) because I forgot to remove the own king.
The bug was incredibly rare because it could only happen if the enemy king worked its way all the way to the own king's back rank, and the own king was still able to castle. Usually if the enemy king has travelled all that distance it is pretty likely the own king would have moved and no longer had castling rights. Hence the great rarity.

It's running 2000 games using the Stephan position only, 300 so far without breaking ...

Fingers crossed!
As ever, rare bugs in chess-software are connected to castling or en passant... But good to see, the bug is finally located and (hopefully) fixed.

it's fixed, Ed has the source code snippet to change