Stockfish dev-20260720 wins New Engines Test, by Chess Engines Diary, 2026.08.20

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Stockfish dev-20260720 claimed another tournament victory against the latest versions of chess engines. Strato III and Cool Iris 18 ended up with the same score, with their final rankings determined by secondary scoring using the Berger system.

CEDR 903.628 games download (until 30.06.2026)
All Games 59.595 CEDR from 01.07.2026 download.
💾 Tournament games: 756 download

💻 Dell G15 SE, i7-11800H RAM 16,0 GB  🖬 GUI - Myracle, book:avt-2026b
#chessenginesdiary Country - Poland, City - Malbork  🕓 Time 3'+3"

P Engine Score (Tie) +/-/=
1: Stockfish dev-20260720 42.5 / 54 1025.00 (+31 -0 =23)
2: Strato III 42.5 / 54 1009.75 (+31 -0 =23)
3: Cool Iris 18 42.5 / 54 998.00 (+31 -0 =23)
4: Triumviratus 6.0 41.5 / 54 964.25 (+30 -1 =23)
5: Raphael 4.3.0 dev-acd050b 41.0 / 54 953.50 (+28 -0 =26)
6: Devre 7.0 JA 40.5 / 54 930.25 (+29 -2 =23)
7: Cinder 0.6.1 40.0 / 54 944.25 (+26 -0 =28)
8: Icarus 1.1.1 JA 39.5 / 54 890.25 (+29 -4 =21)
9: Caissa 1.26 JA 38.5 / 54 875.75 (+24 -1 =29)
10: Arasan 26.0 JA 37.5 / 54 818.25 (+27 -6 =21)
11: Tcheran 13.0 35.0 / 54 745.75 (+25 -9 =20)
12: Gaia 4.2.2 33.5 / 54 707.00 (+23 -10 =21)
13: Ursus 1.0 31.5 / 54 634.50 (+20 -11 =23)
14: Rodent V 1.1 30.5 / 54 617.25 (+18 -11 =25)
15: Pea 9.1 26.0 / 54 481.75 (+15 -17 =22)
16: Bitbit 1.7 JA 25.5 / 54 438.25 (+16 -19 =19)
17: MACE-Kraken-v1 25.0 / 54 471.50 (+13 -17 =24)
18: Princhess 0.22.0 22.5 / 54 369.75 (+15 -24 =15)
19: Theoria 0.3.1 22.0 / 54 389.75 (+11 -21 =22)
20: Ember 1.2.0 JA 19.5 / 54 328.25 (+11 -26 =17)
21: Rusty Rival 1.0.53 18.5 / 54 295.00 (+10 -27 =17)
22: Dual 0.4.2 18.5 / 54 267.00 (+12 -29 =13)
23: Admete 1.9.0 JA 16.5 / 54 210.00 (+12 -33 =9)
24: MagicTree 3.3 13.0 / 54 140.50 (+10 -38 =6)
25: Zeno 3.0 5.5 / 54 23.50 (+4 -47 =3)
26: Ariadne 0.4.0 4.0 / 54 6.00 (+4 -50 =0)
27: Chest-XB 0.0.1 JA 3.0 / 54 5.50 (+2 -50 =2)
28: Mephisto Schach III Glasgow 0.0 / 54 0.00 (+0 -54 =0)


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