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

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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)  
@chessenginesdiary

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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