Pinfork

Key features

• Mistakes explained

  A wrong move gets a one-line explanation (a hanging piece, an allowed mate, a bad trade) and the punishing reply is played on the board. Then try again or see the solution.

• Other winning mates count

  Any checkmate is accepted at any point in a puzzle, even when it differs from the stored line.

• A rating that follows you

  A personal Glicko-2 puzzle rating picks puzzles near your level from 5,004 positions rated 600 to 2400.

• 15 tactical themes

  Mate in 1, 2 and 3+, forks, pins, skewers, discovered attacks, hanging pieces, back-rank mates, sacrifices, deflection, promotion, trapped pieces, quiet moves and endgames, unlocked as you level up.

• Daily Puzzle and review

  The same puzzle for everyone each day, with a streak to keep. Every puzzle you miss waits in Review for a second try.

• Hints that teach

  The first hint shows the piece to move, the second the target square. The solution is always free.

• Track your progress

  A rating chart, accuracy per theme, solve streaks, time trained, 18 awards and replays of recent puzzles.

• Made for every player

  Tap-to-move or drag-and-drop, four board colour schemes, TalkBack support that reads squares and moves aloud, and colour-blind-friendly highlights with icons.

• Offline, no account

  All puzzles are bundled in the app and your progress stays on your phone. Free with ads, shown only between puzzles, never during one.

• Open puzzle data

  Puzzles are selected from the Lichess puzzle database (CC0 public domain) and every line is checked with chess.js. Pinfork is not affiliated with Lichess.