Chess engine: Obsidian 14

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Obsidian, an UCI chess engine written in c++
Rating Chess Engines Diary CEDR=3707

v.14 SE:
Obsidian comes back far stronger than ever:
this release features a few bug fixes, multithreaded TT initialization, and especially, Elo gains I wasn't sure I would've been able to delivier.
Both tests below were run at a way higher time control than is written - I won't get into the details of this here - it doesn't matter.

Obsidian 14.0 vs 13.0 (STC)
Elo   | 40.34 +- 6.59 (95%)
Conf  | 8.0+0.08s Threads=1 Hash=16MB
Games | N: 3002 W: 947 L: 600 D: 1455
Penta | [6, 227, 712, 526, 30]

Obsidian 14.0 vs 13.0 (LTC)
Elo   | 46.25 +- 6.05 (95%)
Conf  | 40.0+0.40s Threads=1 Hash=128MB
Games | N: 3000 W: 899 L: 502 D: 1599
Penta | [1, 184, 740, 567, 8]



Obsidian 13 - results:
OpponentScore+-Games
PlentyChess 3.0.0119.5/240-1240 Partii
Alexandria 7.0.058.5/109+8109 Partii
Chess-System-Tal-255.5/97+1497 Partii
Berserk 1345.5/95-495 Partii
Ethereal 14.2545.5/83+883 Partii
Titan 1.1.039.5/68+1168 Partii
RubiChess 2024011234.5/65+465 Partii
Uralochka 3.41a JA38/64+1264 Partii
Lizard 10.536.5/64+964 Partii
Caissa 1.1934/63+563 Partii
Caissa 1.20 JA23.5/49-249 Partii
Seer 2.8.030/48+1248 Partii
Viridithas 13.0.028.5/46+1146 Partii
Stockfish 16.118/44-844 Partii
Clover 6.223/40+640 Partii
JigSaw 5.917/38-438 Partii
Motor 0.7.019.5/37+237 Partii
Clover 7.0 JA22.5/36+936 Partii
Peacekeeper 3.0121.5/35+835 Partii
Caissa 1.2017/32+232 Partii
Lizard 10.419/31+731 Partii
Viridithas 14.0.017/29+529 Partii
Yuliana 5.011.5/28-528 Partii
Stormphrax16.5/26+726 Partii
Stockfish 202408038/26-1026 Partii
Koivisto 9.216.5/25+825 Partii
Clover 7.1 JA14/25+325 Partii
Motor 0.6.013.5/19+819 Partii


Neural network
Obsidian evaluates positions with a neural network trained on Lc0 data.



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