New version chess engine: Lux 4.0

Lux - UCI chess engine  Rating CEDR=2491

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

Other Engine Insiprations
[antikythera](https://github.com/0hq/antikythera)
[Bit-Genie](https://github.com/Aryan1508/Bit-Genie)
[Blunder](https://github.com/algerbrex/blunder)
[Rice](https://github.com/rafid-dev/rice)
And of course, [Stockfish](https://github.com/official-stockfish/Stockfish)

v.4.0:

Score of Lux 4.0 vs Lux 3.5: 127 - 55 - 80  [0.637] 262

...      Lux 4.0 playing White: 69 - 24 - 38  [0.672] 131

...      Lux 4.0 playing Black: 58 - 31 - 42  [0.603] 131

...      White vs Black: 100 - 82 - 80  [0.534] 262

Elo difference: 98.0 +/- 35.9, LOS: 100.0 %, DrawRatio: 30.5 %

SPRT: llr 2.95 (100.2%), lbound -2.94, ubound 2.94 - H1 was accepted

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

 Bishop Pair

 Open / Semi-Open File

Move Ordering Upgrades

 TT-Move

 Promotions

 MVV-LVA

 History Heuristic [Piece][To]

 Killer Moves

Lux 4.0 download