This repository was archived by the owner on Apr 26, 2025. It is now read-only.
This repository was archived by the owner on Apr 26, 2025. It is now read-only.
Mayhem v3.9 does not see obvious threat #3
Description
Mayhem v3.9 makes a wrong decision in this position :
Black to move.
The threat Rf1-f3-h3 and mate on the h-file is a serious danger, but Mayhem v3.9 plays Nxc2 and is lost immediately !
All other engines, which i used to test this position, perform better .. they seem to see that threat.
[Event "engine vs engine"]
[Site "?"]
[Date "2021.04.15"]
[White "DON 210414 without NNUE"]
[Black "Mayhem v3.9"]
[Result "1-0"]
[FEN "r1bq1rk1/pp1nbpp1/4p3/1N1pP1PQ/1n3P2/1N2B3/PPP4P/R3K2R w KQ - 0 16"]
[GameDuration "00:22:42"]
[PlyCount "71"]
[SetUp "1"]
[TimeControl "900+5"]
1. O-O {+0.85/30 118s} g6 {+0.66/15 40s}
2. Qh4 {+0.49/79 20s} Nxc2 {+1.51/13 38s}
3. Rf3 {+3.86/30 13s} Bxg5 {-0.44/15 37s}
4. fxg5 {+4.20/29 16s} Nxe5 {-1.03/15 36s}
5. Rh3 {+4.17/30 15s} Nf3+ {-1.19/16 35s}
6. Rxf3 {+4.17/30 26s} e5 {-1.37/17 34s}
7. Rc1 {+4.24/30 17s} Nxe3 {-1.29/17 32s}
8. Rxe3 {+4.09/29 16s} Qb6 {-1.45/17 31s}
9. Rc5 {+4.29/31 16s} Bf5 {-1.13/16 30s}
10. Nc3 {+4.13/31 16s} Rad8 {-1.76/17 29s}
11. Rxe5 {+4.15/32 19s} Be4 {-1.61/16 28s}
12. Re7 {+4.43/31 22s} Rfe8 {-1.47/17 28s}
13. Nxe4 {+4.42/29 14s} dxe4 {-0.86/16 27s}
14. Qxe4 {+4.57/28 15s} Kf8 {-1.32/17 26s}
15. Qe5 {+6.32/28 16s} Rd1+ {-2.46/16 25s}
16. Kf2 {+6.99/29 20s} Red8 {-2.55/16 24s}
17. Rxb7 {+7.17/28 14s} Qxb7 {-4.96/16 24s}
18. Qh8+ {+7.33/26 14s} Ke7 {-4.96/1 0s}
19. Re5+ {+7.72/27 39s} Kd7 {-5.41/18 23s}
20. Nc5+ {+8.13/22 13s} Kc8 {-5.92/17 22s}
21. Qh3+ {+9.08/21 20s} R8d7 {-5.92/15 22s}
22. Nxb7 {+11.71/25 17s} Rd2+ {-7.27/15 21s}
23. Kf1 {+13.53/24 13s} Rd3 {-6.39/15 20s}
24. Rc5+ {+M31/41 14s} Kxb7 {-7.42/17 20s}
25. Qg2+ {+M25/244 9.9s} Kb8 {-12.08/20 19s}
26. Rb5+ {+M23/244 10s} Kc7 {-13.11/21 19s}
27. Qc2+ {+M21/244 12s} Kd8 {-17.32/22 18s}
28. Rb8+ {+M19/244 9.9s} Ke7 {-17.32/1 0s}
29. Qe2+ {+M17/244 11s} Kd6 {-17.32/20 18s}
30. Qxd3+ {+M15/244 10s} Kc7 {-104.85/18 16s}
31. Qb5 {+M13/244 11s} Kd6 {-104.85/16 5.4s}
32. b4 {+M9/244 8.2s} Ke6 {-104.85/13 0.68s}
33. Re8+ {+M7/244 5.6s} Re7 {-104.85/11 0.11s}
34. Rd8 {+M5/244 0.042s} Rd7 {-104.85/6 0.016s}
35. Rxd7 {+M3/244 0.016s} f6 {-104.85/4 0s}
36. Qd5# {+M1/244 0.011s, White mates} 1-0