Stockfish 17.1 vs Mid-range Chess Engines (Tests by Jörn Gronemann, 2025.09.28)

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This is another tournament where Stockfish 17.1 "tests" new mid-range engines. And it turns out there's another surprise - Integral 7.0.0 JA is better than Stockfish 17.1!

Obsidian dev-16.14 also achieved good results. Note that Stockfish lost three games to the Halogen 15.4.2 engine!

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 780 games 
💾 All games CEDR 736.088 games download (01.09.2025)  
#chessenginesdiary

P Engine Score (Tie) +/-/=
1: Integral 7.0.0 JA 66.0 / 120 3915.00 (+12 -0 =108)
2: Stockfish 17.1 65.5 / 120 3883.25 (+14 -3 =103)
3: Obsidian dev-16.14 65.0 / 120 3855.00 (+12 -2 =106)
4: Alexandria 8.1.0 JA 62.5 / 120 3728.00 (+8 -3 =109)
5: Halogen 15.4.2 60.5 / 120 3625.25 (+9 -8 =103)
6: Reckless 0.8.0 60.0 / 120 3588.00 (+4 -4 =112)
7: Caissa 1.23 60.0 / 120 3582.00 (+5 -5 =110)
8: PlentyChess 7.0.0 JA 59.5 / 120 3544.50 (+8 -9 =103)
9: Stormphrax 7.0.0 JA 59.0 / 120 3535.00 (+7 -9 =104)
10: Berserk 20250622 59.0 / 120 3523.25 (+5 -7 =108)
11: Clover 9.1 JA 56.0 / 120 3374.25 (+0 -8 =112)
12: Horsie 1.1.0 54.5 / 120 3269.75 (+5 -16 =99)
13: Motor 0.9.0 52.5 / 120 3174.25 (+1 -16 =103)




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