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
15,001in the set
Themes
Train the pattern.
Each puzzle is tagged. Pick a theme and we’ll find a board that fits.
Mate in twoHardest collectionForksHardest collectionPinsHardest collectionSacrificesHardest collectionEndgamesHardest collectionDefenceHardest collectionDiscovered attackHardest collectionSkewersHardest collection
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.