What makes the training adaptive?
ChessJi uses your completed attempts, puzzle rating, and recurring weak themes to choose useful positions instead of serving the same random mix to everyone.
Focused chess tactics training
Adaptive chess puzzles
ChessJi is an adaptive chess puzzle trainer that learns the tactical patterns you miss and brings back the right rated positions at the right time—without hints or solution reveals.
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No hints
Adaptive selection
Private progress
The method
How adaptive chess puzzle training works.
Improvement starts with a clear signal. ChessJi records every attempt, identifies the tactical themes that need work, and adjusts what you see next.
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Solve without hints
Train your calculation with one position at a time—no engine noise or answer-shaped nudges.
- 02
Find your weak tactics
Every attempt builds a private picture of the motifs you miss, from forks and pins to mating patterns.
- 03
Repeat at the right level
ChessJi resurfaces useful puzzles at the right difficulty until the pattern becomes instinct.
Current focusBack-rank mateReturns when the timing is right
Visible progress
Track your chess tactics progress.
Follow your training rating, success rate, recurring tactical motifs, and medal milestones, so every session has a clear purpose.
Begin with one positionGood to know
Chess puzzle training, clearly explained.
Will I see hints or solutions?
No. You calculate the position and commit to a legal move. A wrong move ends that attempt without revealing the answer, so the pattern can return as honest practice.
What does the training rating mean?
It is a ChessJi puzzle-training rating that responds to results and puzzle difficulty. It is not a FIDE, Lichess, or Chess.com playing rating.
Where do the chess puzzles come from?
Training positions are derived from the open Lichess puzzle database. Read the terms and data-source details for attribution and licence information.