The board freezes.
The game goes on in your head.

How it works

1. See the position. The board shows the last known position, and it never changes while you solve.
2. Play the moves in your head. Two, four or six moves follow, in notation only.
3. Find the best move in the position you pictured, then watch the real board replay what happened.

Why train visualization?

In a real game you rarely calculate from the position on the board. You calculate from the position a few moves from now, and that position exists only in your head. Ordinary puzzles let you move the pieces and see the result, so they train pattern spotting more than calculation.

Blind puzzles take the board away at exactly the moment it matters: you have to hold the new position in your mind and find the tactic there. It's the reason coaches tell students to solve without moving the pieces, and why blindfold exercises are a classic way to train. Last Known Position turns that into short daily puzzles, starting with just two moves to picture.

Built for real improvement

• Three levels: 2, 4 and 6 blind moves, each with its own rating.
• Puzzles from real games in the Lichess database, checked with Stockfish.
• Missed puzzles come back for review, so the patterns stick.
• No account needed: your progress is saved on your phone. No ads and no advertising trackers. Sharing your puzzle results to help improve the puzzles is your choice (it's part of the beta), and you can delete what you've shared at any time.