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Stockfish 17.1 examines challenger engines (Tests by Jörn Gronemann, 2025.08.13)


This is another tournament where the world's most powerful chess engine, Stockfish 17.1, tests engines aspiring to the elite. The best performers were Obsidian dev-16.14, Integral 7.0.0-dev JA, and Alexandria 8.0.0 JA.

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 960 games 
💾 All games CEDR 705.417 games download (01.08.2025)  
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P Engine Score (Tie) +/-/=
1: Stockfish 17.1 74.0 / 120 4325.25 (+28 -0 =92)
2: Obsidian dev-16.14 69.0 / 120 4003.25 (+19 -1 =100)
3: Integral 7.0.0-dev JA 66.0 / 120 3876.50 (+13 -1 =106)
4: Alexandria 8.0.0 JA 66.0 / 120 3859.00 (+13 -1 =106)
5: Berserk 20250622 64.5 / 120 3783.75 (+12 -3 =105)
6: PlentyChess 6.0.15 JA 63.0 / 120 3744.25 (+8 -2 =110)
7: Caissa 1.22.1 63.0 / 120 3705.25 (+10 -4 =106)
8: Motor 0.9.0 60.5 / 120 3554.50 (+7 -6 =107)
9: Horsie 1.1.0 60.5 / 120 3543.25 (+8 -7 =105)
10: RubiChess 20250606 JA 60.0 / 120 3550.50 (+7 -7 =106)
11: Viridithas 18.0.0 JA 59.0 / 120 3463.00 (+8 -10 =102)
12: Stormphrax 7.0.0 JA 59.0 / 120 3457.50 (+10 -12 =98)
13: Clover 8.2 JA 56.0 / 120 3298.00 (+6 -14 =100)
14: Titan 1.1.0 53.5 / 120 3157.25 (+6 -19 =95)
15: Fire 10 JA 49.5 / 120 2950.50 (+3 -24 =93)
16: Pawn 4.0.4 g9279212 JA 36.5 / 120 2217.75 (+0 -47 =73)







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