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Triumviratus 4.1 wins Swiss Alpha Challenger - edition 06/2026


The Alpha Challenger Group (edition 06/2026) — the final qualifying stage of the CEDR Chess Engine League — consisted of 78 engines playing an 11-round Swiss tournament. Triumviratus 4.1 emerged as the clear winner, delivering a very impressive performance. The following engines also advanced: Stallion GB Edition, Shadow 0.3, Quirky 2.1 JA, Gargantua 2.1, and Chess System Tal 2.06.

You can find more information about the CEDR Chess Engine League on the dedicated website - LEAGUE.
CEDR 885.750 games download (01.07.2026)
💾 Tournament download with 429 games
💻 Asus Zenbook, AMD Ryzen 9 6900HX, RAM 32,0 GB  ðŸ–¬ GUI - Aquarium
#chessenginesdiary Country - Poland, City - Malbork  🕓 Time 3'+3"

P Engine CEDR Score (Tie) Chg +/-/=
1: Triumviratus 4.1 2400 8.5 / 11 79.0 +44 (+7 -1 =3)
2: Stallion GB Edition 2400 8.5 / 11 76.0 +43 (+6 -0 =5)
3: Shadow 0.3 2400 8.0 / 11 80.0 +40 (+6 -1 =4)
4: Quirky 2.1 JA 2400 8.0 / 11 79.5 +50 (+7 -2 =2)
5: Gargantua 2.1 3123 8.0 / 11 72.5 -8 (+6 -1 =4)
6: Chess System Tal 2.06 3634 7.5 / 11 80.0 -23 (+5 -1 =5)
7: Solo 2.2.0 JA 2400 7.5 / 11 76.5 +44 (+6 -2 =3)
8: Lunar 0.4.0 2400 7.5 / 11 69.0 +42 (+5 -1 =5)
9: Bitbit 1.6 2400 7.0 / 11 75.0 +35 (+5 -2 =4)
10: Weiawaga 6.0.0 2400 7.0 / 11 71.5 +42 (+5 -2 =4)
11: DanaSah 9.1 JA 3245 7.0 / 11 71.5 -21 (+6 -3 =2)
12: Panda 1.2 JA 2400 7.0 / 11 71.5 +37 (+5 -2 =4)
13: Perseus 1.1 JA 2400 7.0 / 11 70.5 +30 (+4 -1 =6)
14: Pounce 3.0.0 2400 7.0 / 11 64.0 +45 (+7 -4 =0)
15: Priessnitz 2.0.1 JA 2400 7.0 / 11 64.0 +43 (+5 -2 =4)
16: Fizbo 2 JA 3064 6.5 / 11 69.0 -17 (+5 -3 =3)
17: Publius 1.2 JA 2400 6.5 / 11 69.0 +37 (+5 -3 =3)
18: Myrddin 0.95 JA 2629 6.5 / 11 68.5 +1 (+5 -3 =3)
19: Bit-Genie 9.24 JA 3051 6.5 / 11 66.0 -25 (+5 -3 =3)
20: Maelstrom 3.3.0 3320 6.5 / 11 66.0 -33 (+5 -3 =3)
21: Demolito 2025-12-16 3236 6.5 / 11 65.5 -30 (+5 -3 =3)
22: Beef 0.3.6 JA 2400 6.5 / 11 65.0 +28 (+5 -3 =3)
23: Invictus r391 JA 2793 6.5 / 11 63.5 -11 (+5 -3 =3)
24: Flounder 0.5.0.2 3215 6.5 / 11 63.0 -32 (+4 -2 =5)
25: Gecko 0.40.1 2400 6.5 / 11 61.5 +32 (+5 -3 =3)
26: ChessBrainVB 4.10 3203 6.5 / 11 61.0 -24 (+5 -3 =3)
27: Yakka 1.5 2894 6.0 / 11 69.5 -8 (+4 -3 =4)
28: Catalyst 3.0.0 JA 2400 6.0 / 11 69.5 +15 (+3 -2 =6)
29: Dog 4.10 2400 6.0 / 11 67.5 +19 (+4 -3 =4)
30: Orion 1.1 3084 6.0 / 11 66.5 -30 (+4 -3 =4)
31: Lozza 10 2847 6.0 / 11 65.5 -31 (+5 -4 =2)
32: Aku 2025.7.9 3176 6.0 / 11 62.0 -30 (+4 -3 =4)
33: Wize 1.0 NNUE 3014 6.0 / 11 59.5 -30 (+5 -4 =2)
34: Admete 1.8.0 2640 6.0 / 11 55.5 -11 (+6 -5 =0)
35: Fatalii 0.10.1 2385 6.0 / 11 55.0 +22 (+6 -5 =0)
36: Seagull 1.0 JA 2400 5.5 / 11 69.0 +20 (+4 -4 =3)
37: Chess-3 4.0 2400 5.5 / 11 64.0 +19 (+4 -4 =3)
38: 4ku 5.1 3091 5.5 / 11 63.5 -29 (+3 -3 =5)
39: Revolver 2.0 JA 2400 5.5 / 11 62.5 +20 (+4 -4 =3)
40: Bobcat 8.0 JA 2782 5.5 / 11 61.5 -26 (+4 -4 =3)
41: Truncator 1.0 2400 5.5 / 11 61.5 +26 (+3 -3 =5)
42: Ember 1.0.0 2400 5.5 / 11 61.5 +26 (+3 -3 =5)
43: OliThink 5.11.9 JA 2845 5.5 / 11 60.5 -12 (+3 -3 =5)
44: Throne 0.2 2400 5.5 / 11 60.5 +20 (+4 -4 =3)
45: KnightX 4.9 2906 5.5 / 11 60.5 -23 (+5 -5 =1)
46: JackyChess 25.12 JA 2400 5.5 / 11 59.5 +20 (+4 -4 =3)
47: Seawall 20250322 JA 2960 5.5 / 11 59.0 -25 (+5 -5 =1)
48: Rusty Rival 1.0.43 2400 5.5 / 11 56.5 +22 (+5 -5 =1)
49: Tomcat 1.0 JA 2400 5.5 / 11 53.5 +13 (+5 -5 =1)
50: MadChess 3.3 2819 5.0 / 11 64.0 -25 (+3 -4 =4)
51: Turbulence 0.0.8 JA 2400 5.0 / 11 61.5 +11 (+5 -6 =0)
52: Lux 5.0 2673 5.0 / 11 58.5 -21 (+4 -5 =2)
53: Schneckbert 3 JA 2400 5.0 / 11 58.0 +4 (+5 -6 =0)
54: Cheese 3.3.0 JA 3081 5.0 / 11 56.0 -42 (+4 -5 =2)
55: Ratsu 2.0.0 2400 5.0 / 11 53.0 -2 (+5 -6 =0)
56: Clockwork 20260530 2400 5.0 / 11 52.0 +8 (+5 -6 =0)
57: Basilisk 1.2.2 2400 4.5 / 11 59.0 +3 (+4 -6 =1)
58: Kobra 2.1 2290 4.5 / 11 57.0 +21 (+4 -6 =1)
59: Chal 1.4.1 2400 4.5 / 11 56.0 +10 (+3 -5 =3)
60: Drosophila 1.6 JA 2791 4.5 / 11 55.5 -40 (+4 -6 =1)
61: Hobbes 2.1 2400 4.5 / 11 51.0 +3 (+4 -6 =1)
62: K2 1.0 JA 2624 4.5 / 11 49.5 -33 (+4 -6 =1)
63: Soomi V1.2.0B 2400 4.5 / 11 47.5 +0 (+3 -5 =3)
64: BikJump 3.1 2400 4.5 / 11 40.5 +10 (+4 -6 =1)
65: Pluto 1.0.1 2400 4.0 / 11 64.0 +10 (+2 -5 =4)
66: Sentinel 2.0 JA 2400 4.0 / 11 55.0 +2 (+3 -6 =2)
67: Kreveta 2.3.1 2400 4.0 / 11 54.0 -1 (+4 -7 =0)
68: Byte-knight 4.0.0 2400 4.0 / 11 49.5 +2 (+4 -7 =0)
69: Eleanor 4.1 JA 2400 4.0 / 11 47.5 +4 (+4 -7 =0)
70: Viking R4 2400 4.0 / 11 44.5 -9 (+4 -7 =0)
71: Radiance 4.4 2400 3.5 / 11 52.5 -7 (+3 -7 =1)
72: Dual 0.2.9 2400 3.5 / 11 45.5 -8 (+3 -7 =1)
73: Squid 0.3.1 2400 3.5 / 11 40.0 -7 (+3 -7 =1)
74: Hydra 1.1.1 2400 3.0 / 11 43.5 -15 (+3 -8 =0)
75: AllayaChess 1.8 2400 2.5 / 11 40.0 -13 (+2 -8 =1)
76: Whitespine 1.4.0 2400 2.0 / 11 41.5 -20 (+2 -9 =0)
77: Thrawn 2.2 JA 2415 1.0 / 11 39.0 -33 (+1 -10 =0)
78: GOOB 1.8.9 JA 3081 0.0 / 11 41.0 -98 (+0 -11 =0)



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