Stockfish vs Mid-range Chess Engines (Tests by Jörn Gronemann, 2025.09.05)

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Another tournament in which Stockfish 17.1 tested new versions of chess engines aspiring to the elite. Reckless 0.8.0 came out on top – a truly successful version.

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

P Engine Score (Tie) +/-/=
1: Stockfish 17.1 100.0 / 180 8870.75 (+21 -1 =158)
2: Reckless 0.8.0 95.0 / 180 8467.75 (+14 -4 =162)
3: PlentyChess 6.0.18 93.5 / 180 8359.50 (+10 -3 =167)
4: Obsidian dev-16.14 93.0 / 180 8312.50 (+13 -7 =160)
5: Integral 7.0.0-dev JA 92.0 / 180 8219.50 (+11 -7 =162)
6: Berserk 20250622 89.0 / 180 7981.75 (+7 -9 =164)
7: Alexandria 8.1.0 JA 87.5 / 180 7878.50 (+5 -10 =165)
8: Viridithas 18.0.0 85.0 / 180 7672.25 (+3 -13 =164)
9: Caissa 1.23 83.5 / 180 7556.25 (+4 -17 =159)
10: Stormphrax 7.0.0 JA 81.5 / 180 7384.25 (+3 -20 =157)


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