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============================== My email: jotes@go2.pl



Chess engines: Devre 6.39 dev.e4d35c6 JA (Windows and Linux)

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UCI chess engines: Devre
Author: Ömer Faruk Tutkun  Rating Chess Engines Diary CEDR=3386

Devre is an open-source UCI compatible chess engine written in C as a hobby project.The code is a bit badly written now but I'll try to make it cleaner and more efficent in my free time. Although Devre is an original chess engine written from scratch, I got great help from chessprogramming wiki , talkchess forum,stcokfish discord ,and some open-source C engines: Ethereal, Vice, CPW.

Devre 6.0.0 results:
OpponentScore+-Games
Critter 1.6a9.5/12+712 Games
Lynx 1.6.010/10+1010 Games
Euwe 1.010/10+1010 Games
Mida 2.3.1 JA9.5/10+910 Games
Spaghet BologNNese 1.04.5/10-110 Games
Uralochka 3.41a JA3.5/10-310 Games
Nectar 0.1.29/9+99 Games
Radiance 3.29/9+99 Games
Caissa 1.201.5/9-69 Games
DeepBlunder 1.1.98/8+88 Games
CorChess 202408041.5/7-47 Games
HypnoS 0308241.5/6-36 Games
Obsidian 13.01/6-46 Games
SF-PRO 05.08.20241/6-46 Games
Stockfish 16.10.5/6-56 Games
Motor 0.7.01/5-35 Games
Kuma 1.24/4+44 Games
Toga IV 1.1 JA4/4+44 Games
Stash 35.26 JA3.5/4+34 Games
LTChess 9.33.5/4+34 Games
Gogobello 3.03.5/4+34 Games

v.6.0
Changes:
Correction History is added.

NNUE arch, data, and training process have changed. The new arch is (768->1536)x2->1 with SCRelu as an activation function.

A few bug fixes were made one of them was the problem of devre 5.0 poor ltc performance.
TT replacement scheme changed
Some improvements in the search.

Elo gain
Elo   | 162.22 +- 9.64 (95%)
Conf  | 40.0+0.40s Threads=1 Hash=16MB
Games | N: 2006 W: 1023 L: 149 D: 834
Penta | [3, 24, 241, 566, 169]
Thanks to the testers who tested Devre, and the chess engine developers that helped me while developing my engine.

Jim Ablett compiles:
Github-https://github.com/OmerFarukTutkun/Devre/releases/
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