Coding Adventure: Making a Better Chess Bot

Trying to improve an old chess bot by experimenting with various interesting techniques.
This is a sequel to:    • Coding Adventure: Chess  

Support my work (and get early access to new videos and source code) on Patreon or Nebula
Patreon:   / sebastianlague  
Nebula: https://go.nebula.tv/sebastianlague

Source code:
GitHub: https://github.com/SebLague/Chess-Cod...

Credits and references
A really fun video about various algorithms for playing chess by ‪@tom7‬:    • 30 Weird Chess Algorithms: Elo World  
Music and images: https://github.com/SebLague/Misc-Proj...

Chapters:
00:00 Intro
00:38 Battle of the Bots
03:18 Maybe Don’t Throw Away the Best Move?
07:13 Transposition Troubles
10:55 Search Extensions
14:01 Refactoring and Recapping
15:51 Tweaking Kings and Pawns
19:35 Bitboards!
23:54 Passed Pawns (and more)
28:32 Magic Bitboards (minus the magic)
34:40 The Magical Part of Magic Bitboards
39:00 Testing and Optimizing Move Generation
41:50 Killers, Reductions, and Repetitions
45:56 Creating a Lichess Bot
49:30 Let’s Play!
54:54 Existential Crisis
55:02 The Bot’s First Game Online
56:12 Can Our Bot Beat Stockfish? (No)
56:59 Rating Speculation
59:28 Outro