New version chess engine: Lux 4.2

Lux - UCI chess engine  Rating CEDR=2816

Lux - is the chess engine dev's Library of Alexandria. Definitely go check it out.

Libraries 
Chess package for C++: https://github.com/Disservin/chess-library

v.4.2:

Score of Lux 4.2 vs Lux 4.1: 1917 - 1147 - 936  [0.596] 4000

...      Lux 4.2 playing White: 1154 - 383 - 463  [0.693] 2000

...      Lux 4.2 playing Black: 763 - 764 - 473  [0.500] 2000

...      White vs Black: 1918 - 1146 - 936  [0.597] 4000

Elo difference: 67.7 +/- 9.5, LOS: 100.0 %, DrawRatio: 23.4 %

Search Upgrades

 AlphaBeta Negamax

 Quiescence Search

 Transposition Table

 Aspiration Window

 Principal Variation Search

 Improving Heuristic

 Check Extensions

 Reverse Futility Pruning

 Null Move Pruning

 History Pruning

 Late Move Reduction

Eval Upgrades

 Material Score

 Piece-Square Tables

Pawn Eval

 Passed

 Phalanx

 Isolated

 Supported

Piece Eval

 Mobility

 Attacked by Pawn

 Open / Semi-Open File

 Bishop Pair

 Minor Piece Behind Pawn

 Minor Piece Outpost

King Eval

 King Openness

 Attacking Pawn

 Pawn In Front

Move Ordering Upgrades

 TT-Move

 Promotions

 MVV-LVA

 History Heuristic [Piece][To]

 Killer Moves

Lux 4.0 - results:

Adachess 4.0	23/24	+22	24 Games
Lynx 1.0.0	9/14	+4	14 Games
Cool Iris 11.50	0.5/14	-13	14 Games
RukChess 3.0.17	0.5/14	-13	14 Games
Stockfish 20231111 Ivec	0/14	-14	14 Games
TACTICAL 171123	0/14	-14	14 Games
Fire 9.2	0/14	-14	14 Games
Caissa 1.14.1	0/14	-14	14 Games
Sawfish 1.0	0/14	-14	14 Games
Lynx 1.0.1	7.5/12	+3	12 Games
Crystal 7 CMB Ipman	0.5/12	-11	12 Games
Dragon free	0/12	-12	12 Games
Berserk 12.1	0/12	-12	12 Games
Raid 3	0/12	-12	12 Games
Crystal 7 CMB	0/12	-12	12 Games
Freda 0.99	9.5/10	+9	10 Games
Eubos 2.25	8.5/10	+7	10 Games
Lambergar 0.3.1c	5.5/10	+1	10 Games
Reckless 0.3.0	3.5/10	-3	10 Games
Arcanum 1.11.1	2/10	-6	10 Games
Princhess 0.14.1	1.5/10	-7	10 Games

Lux 4.2 download