One archive. A dozen ways to read it.
Everything here runs on real games: yours, or any player you point it at. Most of it works before you ever sign in.
The Opening Tree
Every reply, weighted by how often it's really played. Your games drawn on top of the theory.
The Trainer
Puzzles and opening reps built from your own mistakes, scheduled by spaced repetition.
Player Reports
Type any Chess.com or Lichess handle. Get the scouting report.
Read a live one: hikaru
Style Profiles
Sixteen ways a player wins. Four axes, read from real games.
The Casefile
A typeset dossier on one player's chess.
Read the sample study
Viktor on Film
Your personal chess coach, on film. Episodes cut from your own games.
Daily Challenge
One famous position a day. Find the win before the board tells you whose it was.
Opening Courses
Walk one line move by move, then play it back from memory. No account needed to start.
Session Analyzer
Each sitting, read back: when you were sharp, when you tilted, when to stop.
Head to Head
Any two players, side by side. Where the games really part ways: openings, habits, the clock.
Repertoire
Your openings line by line, with each one's recurring mistake named and priced.
Coach Review
One game, read at master strength. What actually decided it, in plain words.
Recurring Crossroads
The middlegame positions you keep reaching, and your score each way you've played them.
Bullet Analyzer
Where your bullet games are really decided: the flag or the board. Split by 1+0 and 1+1.
Blindfold
Solve with the pieces hidden. Hold the position in your head, one level at a time.
Your Challenges
Puzzles made from the wins you missed in your own games. The engine checks each one before it reaches you.
Name My Line
Play moves; watch the opening's name change under them.