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Obsidian dev-16.14 wins Stockfish vs Mid-range Chess Engines (Tests by Jörn Gronemann, 2025.08.24)


Another tournament in which Stockfish 17.1 tests new mid-range chess engines. Surprisingly, Obsidian dev-16.14 outperformed Stockfish. The Alexandria 8.1.0 JA engine also performed very well.


 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 480 games 
💾 All games CEDR 705.417 games download (01.08.2025)  
#chessenginesdiary

P Engine Score (Tie) +/-/=
1: Obsidian dev-16.14 35.0 / 60 1027.50 (+11 -1 =48)
2: Stockfish 17.1 34.5 / 60 1021.75 (+9 -0 =51)
3: Alexandria 8.1.0 JA 34.5 / 60 1012.50 (+10 -1 =49)
4: Berserk 20250622 32.5 / 60 964.00 (+5 -0 =55)
5: PlentyChess 6.0.18 32.0 / 60 946.25 (+6 -2 =52)
6: Integral 7.0.0-dev JA 32.0 / 60 944.50 (+6 -2 =52)
7: Stormphrax 7.0.0 JA 30.5 / 60 904.50 (+3 -2 =55)
8: Caissa 1.23 JA 30.0 / 60 888.50 (+3 -3 =54)
9: Clover 9.0 JA 30.0 / 60 881.75 (+6 -6 =48)
10: Viridithas 18.0.0-dev 29.0 / 60 859.50 (+3 -5 =52)
11: Motor 0.9.0 28.5 / 60 851.00 (+1 -4 =55)
12: Horsie 1.1.0 28.5 / 60 845.25 (+2 -5 =53)
13: RubiChess 20250606 JA 28.5 / 60 841.50 (+2 -5 =53)
14: Titan 1.1.0 26.5 / 60 790.00 (+2 -9 =49)
15: Pawnocchio 1.8 24.5 / 60 744.25 (+0 -11 =49)
16: Tarnished 4.0 (Consort) 23.5 / 60 704.75 (+1 -14 =45)

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