Find the mistakes you
keep repeating. Fix them.
Deepline scans your games, detects repeated weakness patterns, and generates targeted puzzles from your own positions so you actually improve.
Works with Chess.com and Lichess. Free to start.
See what’s wrong with your chess
Enter your username and we’ll scan your most recent game in seconds — or poke at a sample below first. All in your browser.
Scan a game
Deepline reads every move of one of your games, flags the mistakes, and tells you the one that actually decided it. Enter your username above to run it on your real games.
Everything inside Deepline
A full coaching stack built around your real games — analysis, drills, sparring, and a plan to tie it together.
Every game scanned and ranked into 45+ specific mistake patterns, so you see exactly what you repeat.
Stockfish 17 runs right in your browser, flagging every turning point and blunder.
Drills built from your own blunders: see how it gets punished, then find the save.
An adaptive schedule that attacks your worst patterns first, so the fixes stick.
Play a bot tuned to your rating that steers games toward the positions you keep losing in.
Plain-English breakdowns of your patterns, openings, and where your games turn.
Your Game Review ends at the final move
Chess.com and Lichess review one game in isolation. Deepline reads every game you play and surfaces the mistakes you keep making.
Deepline saw the patternGame Review tells you about a game. Deepline tells you about your chess.
Your weaknesses are
hiding in plain sight
Connect your account. In minutes, you'll know exactly what to work on.