Free chess puzzles made from your own blunders, rebuilt as 3-move puzzles by Stockfish.
Build any position piece by piece, choose a Stockfish version and a rating, and see how a player of that strength would think about it.
Pick a piece, then click squares to place it. Right-click a square (or use Erase) to remove.
Chessinda is a free chess puzzle builder that reads your recent losses on Chess.com or Lichess, finds the moments where you blundered, and turns each one into a short tactics puzzle. Instead of random puzzles, you practise the exact positions you got wrong.
Set up a position piece by piece, pick Stockfish 10, 11 or 16, choose a rating from 800 to 2800 and see how a player of that level would think, which moves they are likely to play and what those moves really cost.
Chessinda is a free chess puzzle builder. It reads your recent losses on Chess.com or Lichess and turns your own blunders into short tactics puzzles, and it can analyse any position at a rating you choose.
Stockfish evaluates every position of your recent losses after the opening. A move counts as a blunder when it loses at least 2.0 pawns of evaluation against you, and the game was not already lost or won.
You start from the position before your blunder and must find the best move, then the best follow-up after the engine replies, then the best third move. Only your moves need input.
Games are fetched straight from Chess.com or Lichess into your browser and analysed locally. Only the username and platform may be logged to count searches.
Stockfish runs as WebAssembly/JavaScript inside your browser. Lower the depth or the number of games for faster results.
Standard-rules games you lost, newest first. Wins and draws are skipped.
Yes. The chess puzzles are completely free, need no account or sign-up, and run in your browser.
A chess puzzle is a position where you must find the best move or a short winning sequence. Practising puzzles trains tactics such as forks, pins, skewers and mating patterns.
Most puzzle sites serve random positions. Here every puzzle comes from a mistake you actually made, so you practise the exact kind of tactic you missed in your own games.
Yes. In the Analyse a position section, set up the pieces, choose Stockfish 10, 11 or 16 and a rating from 800 to 2800, then press Analyze to see which moves a player of that strength is likely to choose and how good they really are.
You can choose Stockfish 10, Stockfish 11 or Stockfish 16 for both puzzle generation and position analysis. All three run locally in your browser.