Motor 0.9.0 - new version chess engine

 

Motor - UCI chess engine written in C++ 17 with (768 -> 32) x 2 -> 1 NNUE trained with

Currently requires Clang or GCC/MinGW compiler.

Author: Martin Novák, Ranking Chess Engines Diary CEDR=3673

We are happy that there is another version of this engine (the previous one was released in August). The previous version plays in the 1st League of the best CEDR chess engines and has a rating of 3673! It will be interesting to see how it fares in new tests - these will be available on our website soon.

Motor 0.9.0 - what changes in the new version?

Progression Tests:

Tests on UHO_Lichess_4852_v1.epd opening book:

Elo   | 44.21 +- 3.68 (95%)

Conf  | 10.0+0.10s Threads=1 Hash=32MB

Games | N: 10002 W: 3275 L: 2009 D: 4718

Penta | [18, 748, 2317, 1786, 132]

Elo   | 50.45 +- 3.36 (95%)

Conf  | 60.0+0.60s Threads=1 Hash=64MB

Games | N: 10000 W: 3187 L: 1745 D: 5068

Penta | [5, 599, 2381, 1979, 36]

Tests on 8moves_v3.epd opening book:

Elo   | 21.01 +- 2.21 (95%)

Conf  | 60.0+0.60s Threads=1 Hash=64MB

Games | N: 10000 W: 979 L: 375 D: 8646

Penta | [0, 232, 3958, 784, 26]

Changes

Most elo comes from correction history experiments

Motor 0.8.0 - vs other engines:

Caissa 1.21	16/36	-4	36 Partii
Alexandria 7.1.0	16/36	-4	36 Partii
Stormphrax 6.0.0	17.5/35	+0	35 Partii
Velvet 8.1.0	17.5/32	+3	32 Partii
Devre 6.39 JA	13/25	+1	25 Partii
Starzix 6.0	11.5/23	+0	23 Partii
Viridithas 15.0.0	11/22	+0	22 Partii
RubiChess 20240817	10.5/22	-1	22 Partii
PlentyChess 3.0.0	10.5/20	+1	20 Partii
Berserk 13	9.5/20	-1	20 Partii
Obsidian 14.01 SE	9.5/20	-1	20 Partii
Quanticade Electra 0.9	6.5/12	+1	12 Partii
Yuliana 5.50	6/12	+0	12 Partii
Stockfish 20241031	5.5/12	-1	12 Partii
SF-PRO 25.10.2024	5/12	-2	12 Partii
Stockfish 17	5/12	-2	12 Partii
Big Yuli GM 221024	5/12	-2	12 Partii
Arasan 25.0	5/10	+0	10 Partii
Velvet 8.1.1	4.5/10	-1	10 Partii
Igel 3.6.0	4.5/9	+0	9 Partii
Titan 1.1.0	4.5/9	+0	9 Partii

Motor 0.9.0 download