Variation tree
The first move at each position is the main line.
Choose a continuation
Library
Your courses
Create, improve and publish opening courses.
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Shared library
Effects
Recording effects available in every course.
Course
Course details
How the course appears to learners.
Course
Game videos
Add, order and preview the YouTube game links learners will see.
Course video Optional
One main YouTube video for this course. Leave it empty if you don’t need one.
Game videos
Extra game links, shown in the order below. Timestamped YouTube links can point to individual games.
Extract positions from video
Find timestamped board candidates to review alongside a YouTube game video.
Corresponding source (AGPL) · Recognizer source and model licences
Samples once per second: brief positions can be missed, and screened results are lossy, not certified correct. Raw uncertainty and later revisits remain available. Downloads contain seconds;piece-placement FEN, not complete game state. Extraction and review never change or publish course PGNs or training-position identities.
Course
Course Chapter video
Private uploads are not enabled.
Course
User games
Games submitted by learners for this course. Links open on the original chess site.
Open a course to view submitted games.
Author
Repertoire editor
Full history stays in the PGN. Branches diverging before the selected start remain editable, but are excluded from training.
Author
Recording
Variation tree
Choose a move to set the board position.
Choose a continuation
Writing
Spellcheck & explanations
British English suggestions run locally. Chess directives and notation are ignored.
Missing hints & comments
Hints are checked for the main learner answer. Comments are checked on recommended moves by your repertoire side; wrong-move feedback is optional. Chess directives alone are not comments. This is separate from spellcheck.
Run the writing check when your explanations are ready.
Structure
Chapters
Learner view
Preview the course
Play a chapter exactly as a learner would before publishing.
Make a move to reveal feedback. Preview attempts never affect learner scores.
Release
Quality checks
Blockers must be fixed. Warnings are yours to judge.
Whole-course coverage
Find likely opponent responses that are missing from the repertoire.
Course history
Versions & restore
Published versions are immutable. Restoring creates a new draft.
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