Chess Engines Diary

The engines Brainlearn 31, Leptir TI MPV, YuliGM Pro 20 , and Kookaburra 3.11 have won another tournament featuring the latest chess engines. The strong performance of Stockfish 16.1 in this field demonstrates the minimal progress made by new engines built upon the Stockfish codebase.   CEDR   788.872 games download   (01.12.2025) 💾  Tournament  download with 272 games 💻 Dell G15 SE, i7-11800H RAM 16,0 GB  🖬 GUI - Fritz 17 👍 #chessenginesdiary Country - Poland, City -  Malbork   🕓 Time 3'+3" P Engine Score (Tie) +/-/= 1-4 Brainlearn 31 16.5 / 32 262.50 (+1 -0 =31) 1-4 Leptir TI MPV 16.5 / 32 262.50 (+1 -0 =31) 1-4 YuliGM Pro 20 16.5 / 32 262.50 (+1 -0 =31) 1-4 Kookaburra 3.11 16.5 / 32 262.50 (+1 -0 =31) 5: Dark SisTer v6 16.0 / 32 ...

Kookaburra 3.11 wins the Elite Chess Engines Tournament. Artemis 18.9 TR sl took second place, and PlentyChess 7.0.20 took third. It's worth noting the a PlentyChess engine's performance – it's getting stronger and stronger. I wonder if it will challenge Stockfish's dominance?   CEDR   773.114 games download   (01.11.2025) 💾  Tournament  download with 240 games 💻 Dell G15 SE, i7-11800H RAM 16,0 GB  🖬 GUI - Fritz 17 👍 #chessenginesdiary Country - Poland, City -  Malbork   🕓 Time 3'+3" P Engine Score (Tie) +/-/= 1: Kookaburra 3.11 18.0 / 30 246.00 (+6 -0 =24) 2: Artemis 18.9 TR sl 17.5 / 30 243.50 (+5 -0 =25) 3: PlentyChess 7.0.20 17.0 / 30 236.50 (+4 -0 =26) 4: Reckless 0.9.0 dev97b 17.0 / 30 235.75 (+4 -0 =26) 5: JigSaw 6.0 17.0 / 30 234.7...

    Another tournament of elite chess engines was very close. Three engines, Kookaburra 3.11, Rems 091224 , and YuliGM Pro 20 , all tied for points, with the 1st-3rd place decided by secondary scoring (Berger). The very good performance of the new Alexandria 8.1.12 engine was noteworthy. CEDR   773.114 games download   (01.11.2025) 💾  Tournament  download with 364 games 💻 HP ENVY i5-8250U 8GB RAM  🖬 GUI - Fritz 17 👍 #chessenginesdiary Country - Poland, City -  Malbork   🕓 Time 3'+3" P Engine Score (Tie) +/-/= 1: Kookaburra 3.11 27.0 / 52 698.00 (+2 -0 =50) 2: Rems 091224 27.0 / 52 697.75 (+2 -0 =50) 3: YuliGM Pro 20 27.0 / 52 696.00 (+2 -0 =50) 4: Stockfish dev-20251102 26.5 / 52 686.00 (+1 -0 =51) 5: SpecTral 11 26.5 / 52 686.00 (+1 -0 =51) ...

Kookaburra 3.10 has won another major tournament for elite chess engines (over 1,500 games played). Yuliirma 5.0 secured second place, while Artemis 17.3 TR SL and Stockfish 20250702 Ivec shared third and fourth. For comparison, Stockfish 14.1 finished 10th. CEDR  680.485 games download  (01.07.2025) 💾  Tournament  download with 1530 (!) games 💻Dell G15 SE, i7-11800H RAM 16,0 GB  🖬 GUI-Banksia 👍 @chessenginesdiary Country - Poland, City -  Malbork   🕓 Time 3'+3" Tech table: Engine KN/mov NPS dep/mov time/mov mov/gam time/gam fails Arcanum 2.6 5257 1038780 18.1 5.1 66.2 335.2 Artemis 17.2TRsl 11518 2013225 44.4 5.7 65.6 375.6 Artemis 17.3 TR sl 12670 2347784 46.5 5.4 71.1 383.8 Clover 8.2.1 19362 3895124 45.0 5.0 81.6 405.7 CorChess 20250702 12414 2412382 39.8 5.1 72.0 370.6 Halogen 13.10.0 20259 4017716 28.8 5.0 79.0 398.6 1 JudaS ++ 1.02 13299 2493264 44.1 5.3 70.5 375.9 Kookaburra 3.10 11833 2322836 49.2 5.1 75.6 385.3 Obsidi...

Kookaburra 3.10 won another major tournament of the strongest chess engines. The differences among the top teams were minimal, with only the Crystal 9 engine clearly lagging behind. 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 780 games   💾 All games CEDR  646.387 games download  (01.05.2025)   @chessenginesdiary P Engine Score (Tie) +/-/= 1: Kookaburra 3.10 61.5 / 120 3681.00 (+5 -2 =113) 2: DarkSeid v5.9 61.5 / 120 3680.00 (+5 -2 =113) 3: Dark_SisTer v8 60.5 / 120 3627.75 (+1 -0 =119) 4: Stockfish dev-20250513 60.5 / 120 3627.50 (+2 -1 =117) 5: Stockfish 17.1 60.5 / 120 3625.75 (+3 -2 =115) 6: TROY 180525 ...

The tournament of the strongest chess engines was won by Kookaburra 3.10 . As you can see from the results, the differences were minimal, although the Sierra engine clearly fared the worst. More results soon. 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"   816 tournaments games download    💾 All games CEDR  625.428 games download  (01.04.2025)   @chessenginesdiary P Engine Score (Tie) +/-/= 1: Kookaburra 3.10 49.5 / 96 2370.00 (+4 -1 =91) 2: Stockfish 17.1 49.5 / 96 2367.25 (+4 -1 =91) 3: Stockfish 250425 49.0 / 96 2349.00 (+3 -1 =92) 4: Killfish PB 110425 49.0 / 96 2347.00 (+2 -0 =94) 5: Artemis 13TR 49.0 / 96 2346.50 ...

Kookaburra 3.10 wins the tournament of the strongest chess engines. As you can see, the differences were minimal, most games ended in a draw. More tests soon. Chess Engines Diary Team 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"   780 tournaments games download    💾 All games CEDR  625.428 games download  (01.04.2025)   @chessenginesdiary P Engine Score (Tie) +/-/= 1: Kookaburra 3.10 61.0 / 120 3653.75 (+2 -0 =118) 2: Killfish PB 110425 60.5 / 120 3627.75 (+2 -1 =117) 3: DarkSeid 5.8 60.5 / 120 3627.75 (+2 -1 =117) 4: Cool Iris 16 60.5 / 120 3627.25 (+2 -1 =117) 5: SpecTral 062025 60.5 / 120 3627.25 (+1 -0 =119) 6: Stockfi...

Kookaburra 3.10 wins another tournament of the strongest chess engines. However, as you can see in the table, the differences are minimal. The same number of points as the winner were also scored by the engines: Stockfish 17.1, Dark SisTer v6 and CorChess 20250322 , and the order was decided by additional scoring. Chess Engines Diary Team 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"   544 tournaments games download    💾 All games CEDR  625.428 games download  (01.04.2025)   @chessenginesdiary P Engine Score (Tie) +/-/= 1: Kookaburra v3.10 34.0 / 64 1080.75 (+4 -0  = 60) 2: Stockfish 17.1 34.0 / 64 1077.75 (+4 -0  = 60) 3: Dark SisTer v6 34.0 / 64 1076.75 (+4 -0  = 60) 4: CorChess...