Prune 3.1.0 JA wins Arena New Engines Test, 2026.01.25-28

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Another tournament where we test new versions of chess engines. Prune 3.1.0 JA won, Caligula 4.0 came in second, and the "benchmark" Critter 1.6a came in third.

 CEDR 804.617 games download (01.01.2026)

💾 Tournament download with 240 games
💻 Asus Zenbook, AMD Ryzen 9 6900HX, RAM 32,0 GB  🖬 GUI - Fritz 20
#chessenginesdiary Country - Poland, City - Malbork  🕓 Time 3'+3"

P Engine CEDR Score (Tie) Perf Chg +/-/=
1: Prune 3.1.0 JA 2400 29.0 / 30 395.00 2984 +162 (+28 -0 =2)
2: Caligula 4.0 2761 27.0 / 30 354.25 2823 +12 (+25 -1 =4)
3: Critter 1.6a 3230 25.5 / 30 306.50 3176 -12 (+25 -4 =1)
4: Raphael 2.3 2400 25.0 / 30 300.50 2719 +120 (+23 -3 =4)
5: Gyatso 1.2.0 2400 22.0 / 30 228.25 2621 +90 (+21 -7 =2)
6: Aconcagua 5.0.0 2400 18.5 / 30 164.25 2533 +57 (+18 -11 =1)
7: Rusty-rival 1.0.24 rc9 2400 16.0 / 30 125.75 2467 +30 (+15 -13 =2)
8: Rusty-rival 1.0.24 rc4 2400 14.5 / 30 127.25 2432 +15 (+13 -14 =3)
9: SoloEngine 1.2.2 2400 14.5 / 30 116.75 2432 +15 (+12 -13 =5)
10: Radiance 4.2 2400 13.0 / 30 97.50 2396 +0 (+12 -16 =2)
11: Ratsu 0.9.0 2400 10.0 / 30 52.50 2321 -30 (+9 -19 =2)
12: DeepBecky 0.2 2400 9.5 / 30 64.25 2313 -33 (+8 -19 =3)
13: Laura 1.1.0 2400 7.0 / 30 40.25 2235 -60 (+6 -22 =2)
14: AspireBot v1 2400 6.0 / 30 25.00 2206 -69 (+6 -24 =0)
15: Marvin-onnx 1.0.1 2400 2.5 / 30 3.50 2045 -105 (+2 -27 =1)
16: Kiy 1.0 2400 0.0 / 30 0.00 1646 -129 (+0 -30 =0)


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