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