The Calendar Puzzle

The calendar puzzle, also known as the puzzle-a-day, is a board printed with calendar squares and a set of flat pieces. The goal is to cover every square except the ones for today's date. The Calendar Puzzle puts that on screen: the date shown on the board changes every day, so each day is a new packing puzzle, and every player works on the same date.

There are three boards. Mini is a compact board with month, weekday and day, Daily leaves the month and day showing, and Weekday uses a full calendar where the month, the day and the day of the week all stay uncovered. You draw a shape by tapping and dragging across the board in any direction, double-tap to remove it, and fit every shape from the shape bank to finish. A timer runs while you play, three hints are available, and once solved you can share a link or submit your time to the leaderboard under a name. Earlier days are in the archive.

The iOS app, out since January 2026, adds challenge modes such as Find All, where you hunt every unique solution for the date, and a timed challenge, plus offline play. The Calendar Puzzle is made by Evan Davison. It is free, needs no account and shows no ads. It suits players who like spatial packing puzzles and a short, quiet daily routine.