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E4 beginners pack

By Theo van Stratum

An easy to understand e4 opening series against most black responses

Free

No licence key needed -- it's yours to download and import straight away.

How to use this

Download the pack file (E4 beginners pack.json)
Open Chess Mastery Trainer, go to Packs -> Import a pack
Choose the file you just downloaded
Its lines, Woodpecker sets or endgame positions are added to your own training

Woodpecker Method Opening trainer Tactics trainer Endgame training Analyse your games Board Vision Tactic or Not Visualisation Puzzle Ladder

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Chess Mastery Trainer bundles the Stockfish chess engine (GPLv3) as a separate program; source at stockfishchess.org. The optional human-style opponent runs Maia-3 (CSSLab, AGPL-3.0), a PyTorch neural network whose checkpoint is downloaded on request from Hugging Face, not bundled with the app. Its complete source, including the small wrapper file that makes it an AGPL-3.0 derivative work, is available at the link above. Earlier builds instead ran the original Maia network weights (GPLv3) through Leela Chess Zero, also as a separate program; that path remains bundled alongside Maia-3 for now. Puzzles come from the open Lichess puzzle database. Chess Mastery Trainer is not affiliated with Lichess, Chess.com, Stockfish, Hugging Face or the Maia project.