Stockfish 17.1 vs Mid-range Chess Engines (Tests by Jörn Gronemann, 2025.11.29)

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Here are the results of another tournament in which Stockfish 17.1 tested new versions of mid-range engines. Reckless 0.9.0-dev and PlentyChess 7.0.23 performed best, but they still fall far short of Stockfish's playing power.

CEDR 773.114 games download (01.11.2025)

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 550 games 
#chessenginesdiary

P Engine Score (Tie) +/-/=
1: Stockfish 17.1 57.0 / 100 2789.25 (+14 -0 =86)
2: Reckless 0.9.0-dev 54.0 / 100 2655.00 (+9 -1 =90)
3: PlentyChess 7.0.23 54.0 / 100 2653.00 (+11 -3 =86)
4: Integral 7.0.0-dev JA 53.5 / 100 2647.50 (+7 -0 =93)
5: Obsidian dev-16.15 SE 52.5 / 100 2579.50 (+9 -4 =87)
6: Berserk 20250622 49.5 / 100 2466.00 (+3 -4 =93)
7: Alexandria 8.1.2 JA 49.5 / 100 2461.25 (+3 -4 =93)
8: Horsie 1.1.0 48.0 / 100 2376.00 (+6 -10 =84)
9: RubiChess 2025 46.5 / 100 2323.50 (+4 -11 =85)
10: Clover 9.1 JA 46.0 / 100 2308.75 (+1 -9 =90)
11: Halogen 15.23.0 39.5 / 100 1997.75 (+1 -22 =77)

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