The hardest 15,000
Find the move
others miss.
Every puzzle is drawn from the top of the Lichess puzzle database — ratings 1600 to 3323. No filler positions. Themes, ratings and analysis on every board.
1200your puzzle rating
0solved
15,014in the set
Puzzle of the day
2883 rated crushing · endgame · longThemes
Train the pattern.
Each puzzle is tagged. Pick a theme and we’ll find a board that fits.
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PromotionHardest collectionForksHardest collectionPinsHardest collectionSacrificesHardest collectionEndgamesHardest collectionDefenceHardest collectionDiscovered attackHardest collectionSkewersHardest collectionDouble checkHardest collectionDeflectionHardest collectionDecoyHardest collectionOverloadingHardest collectionClearanceHardest collectionInterferenceSelectedBack-rank matesHardest collectionWindmillHardest collection
Learn library
Go beyond the puzzle.
Patterns, plans, endgames and openings — the ideas behind the moves.
Daily study plan15 minutes, seven plans Checkmate patternsEight mates to know Tactical motifsForks, pins and more Pawn structuresPlans before moves Opening explorer300 named openings Endgame techniquesNine key positions Your progressStreaks and rating chart CurriculumPaths and basics Retry failedClear the queue Daily archiveLast 30 puzzles Opening trainerRecall your lines
How it works
Wrong move? Try again.
The opponent’s first move is played for you. Find the only continuation. Solve it and the puzzle is added to your history; analyse it and Stockfish explains why.
01Read the board
No hints until you ask.
02Find the tactic
One correct move changes everything.
03Review with Stockfish
Cached analysis, charged once.