Coding Adventure: Making a Better Chess Bot

Video Description

Trying to improve an old chess bot by experimenting with various interesting techniques. This is a sequel to: https://youtu.be/U4ogK0MIzqk Support my work (and get early access to new videos and source code) on Patreon or Nebula * Patreon: https://www.patreon.com/SebastianLague * Nebula: https://go.nebula.tv/sebastianlague Source code: * GitHub: https://github.com/SebLague/Chess-Coding-Adventure Credits and references * A really fun video about various algorithms for playing chess by @tom7: https://www.youtube.com/watch?v=DpXy041BIlA * Music and images: https://github.com/SebLague/Misc-Project-Info/blob/main/Coding-Adventures/Chess-2.txt 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