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PlentyChess 6.0.5 JA wins Middle Class Engines Tournament (Tests by Jörn Gronemann, 2025.06.23)


The latest Middle Class Engines Tournament has concluded, with the PlentyChess 6.0.5 JA engine taking first place. Obsidian dev-16.11 scored the same number of points but finished second due to tie-breaking criteria. In third place was the Berserk 20250606 engine. More tests are currently underway, and results will be available soon.

GPU NVIDIA  RTX 3060 ti. GUI-Banksia, For Every Engine only 1 CPU and 512 Hashtables, Book - 4 GM mvs book,  6TBs.

🕒🕒Time 3'+3"  Tournament download with 396 games
💾 All games CEDR 664.406 games download (01.06.2025)  
@chessenginesdiary

P Engine Score (Tie) +/-/=
1: PlentyChess 6.0.5 JA 36.0 / 66 1177.75 (+7 -1 =58)
2: Obsidian dev-16.11 36.0 / 66 1173.50 (+6 -0 =60)
3: Berserk 20250606 35.0 / 66 1142.00 (+6 -2 =58)
4: Integral 7.0.0 JA 34.5 / 66 1131.50 (+3 -0 =63)
5: Alexandria 8.0.0 JA 33.5 / 66 1097.25 (+4 -3 =59)
6: RubiChess 2025.06.06 JA 33.0 / 66 1083.25 (+3 -3 =60)
7: Motor 0.9.0 33.0 / 66 1082.00 (+4 -4 =58)
8: Caissa 1.22 32.5 / 66 1074.25 (+4 -5 =57)
9: Horsie 1.1.0 32.0 / 66 1056.00 (+2 -4 =60)
10: Lizard 11.2.0 31.5 / 66 1038.75 (+3 -6 =57)
11: Starzix 6.1 6.1 JA 29.5 / 66 981.75 (+2 -9 =55)
12: Stormphrax 6.0.42 JA 29.5 / 66 977.50 (+4 -11 =51)




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