Tournament Info
Top15 round-robin tournament of free engines only, using Stefan Pohl's unbalanced 3-move book
Chess324xxl_big+090_+119.pgn played reversed sides per pairing.
Time Control: game in 2 minutes plus 1 second increment, 2'+1"
Hardware: Intel i7 12700, i9 10900 and AMD Ryzen 5900X (performance roughly equalised via
power settings)
CuteChess GUI: Concurrency limited to number of actual cores (P cores in case of i7 12700)
Each engine 512MB hash, 1 thread, ponder off
Each pairing 100 openings
Adjudication: Syzygy 5-men only - no eval based adjudication.
Endgame tablebases: Syzygy 5-men.
Ratings calculated with Ordo.
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# PLAYER : RATING ERROR POINTS PLAYED (%) W D L D(%) OppAvg CFS(%)
1 Stockfish 17.1 : 3859 8 2148.5 3000 71.6 1350 1597 53 53.2 3693 100
2 Obsidian 15 : 3772 7 1799.5 3000 60.0 928 1743 329 58.1 3699 93
3 PlentyChess 5.0.0 : 3763 8 1763.0 3000 58.8 887 1752 361 58.4 3700 99
4 Berserk 13 : 3749 7 1701.0 3000 56.7 808 1786 406 59.5 3701 90
5 Caissa 1.22 : 3742 7 1670.5 3000 55.7 765 1811 424 60.4 3701 73
6 Alexandria 8.0.0 : 3739 8 1655.5 3000 55.2 749 1813 438 60.4 3701 78
7 Integral V7 : 3734 8 1636.5 3000 54.5 763 1747 490 58.2 3702 100
8 Viridithas 17.0.0 : 3715 7 1553.0 3000 51.8 618 1870 512 62.3 3703 100
9 Clover 8.1 : 3696 8 1467.5 3000 48.9 554 1827 619 60.9 3704 99
10 Horsie 1.0 : 3682 7 1408.0 3000 46.9 531 1754 715 58.5 3705 100
11 Stormphrax 6.0.0 : 3665 7 1333.0 3000 44.4 467 1732 801 57.7 3706 100
12 RubiChess 20240817 : 3650 7 1267.0 3000 42.2 372 1790 838 59.7 3707 50
13 Starzix 6.0 : 3650 7 1267.0 3000 42.2 410 1714 876 57.1 3707 100
14 Motor 0.8.0 : 3625 8 1161.0 3000 38.7 289 1744 967 58.1 3709 99
15 Renegade 1.2.0 : 3611 7 1101.0 3000 36.7 289 1624 1087 54.1 3710 92
16 Quanticade Fenrir 1.0 : 3603 8 1068.0 3000 35.6 254 1628 1118 54.3 3710 ---
Total: 24'000 games played by 16 programs
White wins: 9'474 (39.5%)
Black wins: 560 (2.3%)
Draws: 13'966 (58.2%)
White score: 68.6%
Updated: 2025-05-08