Player cardGuest playerSaved on this device
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0 of 270 guided lessons0-day streak
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Develop Your Chess
Why did
you lose?
Paste one Chess.com or Lichess game. Get the three decisions that mattered—and a short workout built from your weaknesses.
Your complete path
See what you know.
Choose what comes next.
Your progress, unlocked skills, and the branches still ahead—all in one place.
Start without a PGN
Choose your next challenge.
Each game becomes up to three clear positions for you to solve.
0/ 270 complete
Solve all positions to advance the skill and unlock more of the path.
One game. Three reasons.
Paste the game you want to understand.
Copy its PGN from Chess.com or Lichess. We ignore harmless engine preferences and focus on decisions you can learn from.
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Position notebook
Preview a position.
Paste a FEN to put the position on the board.
Guided foundations
Your Chess Skill Tree
Use guided lessons and puzzle sets when you do not have a game to import.
Saved on this device
Pattern vision
0%TACTICS
Better positions
0%STRATEGY
Strong starts
0%OPENINGS
Resilient play
0%DEFENSE
Finish precisely
0%ENDGAMES
Board decisions
0%PRACTICAL PLAY
Interactive game lesson
Find 3 better moves.
Your game report
Personal training session
Your 5-minute workout
Built from the weakness in this game.