Cool Iris 15 wins Strong Engines Tournament, Tests by Jörn Gronemann, 2026.05.07

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Cool Iris 15 once again won the tournament for strong chess engines. DarkSeid 11.1 SE took second place and SpecTral 15 took third.

CEDR 871.259 games download (01.05.2026)

🕒🕒Time 3'+3"   Tournament download with 720 games 
#chessenginesdiary
GPU NVIDIA  RTX 3060 ti. GUI-Banksia, For Every Engine only 1 CPU and 512 Hashtables, Book - 4 GM mvs, book,  6TBs. 

P Engine Score (Tie) +/-/=
1: Cool Iris 15 48.5 / 90 2172.25 (+8 -1 =81)
2: DarkSeid 11.1 SE 47.5 / 90 2124.25 (+7 -2 =81)
3: SpecTral 15 47.0 / 90 2107.00 (+4 -0 =86)
4: Dark SisTer 15 46.5 / 90 2085.50 (+5 -2 =83)
5: CorChess 20260419 45.5 / 90 2039.00 (+4 -3 =83)
6: YuliGM Pro 20 45.0 / 90 2024.00 (+1 -1 =88)
7: ShashChess 41 45.0 / 90 2023.25 (+3 -3 =84)
8: JigSaw 8.1 45.0 / 90 2022.75 (+4 -4 =82)
9: Artemis 30.2TR PrO 45.0 / 90 2022.00 (+4 -4 =82)
10: Reckless 0.10.0 dev-7300f044 44.5 / 90 2002.25 (+3 -4 =83)
11: Sky II 44.0 / 90 1984.00 (+1 -3 =86)
12: SF TACTICAL 050526 44.0 / 90 1979.00 (+3 -5 =82)
13: YuliGM 2026 43.5 / 90 1956.75 (+2 -5 =83)
14: Stockfish dev-20260504 43.0 / 90 1939.75 (+0 -4 =86)
15: Stockfish 18 JA 43.0 / 90 1938.75 (+2 -6 =82)
16: PlentyChess 7.0.66 43.0 / 90 1938.00 (+2 -6 =82)


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