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What Calendar Puzzle is
Calendar Puzzle gives you a fresh brain teaser every day. Your goal is to place eight given pieces on a board that contains 43 cells, arranged as a calendar. You must cover every cell except the two that show today's month and day. The puzzle is designed so that all 366 possible dates have at least one solution, so no date is impossible. Beyond the daily challenge, you can join live multiplayer rounds that begin every five minutes. In these rounds, every player receives the same board and the same set of pieces, making it a fair race to find the correct placement. The game runs entirely in your browser, is free to play, and requires no download or account creation. For those who want to improve, a strategy course covers geometry, parity, openings, and traps, helping you understand the patterns behind the puzzle.
How to play
Each day, the board shows a specific month and day as the target. You receive eight pieces of various shapes. Your task is to arrange these pieces on the board so that they cover all 43 cells except the two cells representing today's month and day. The pieces cannot overlap, and they must stay within the board's boundaries. Once you have placed all eight pieces and the only uncovered cells are the target month and day, the puzzle is solved. In multiplayer mode, a new round starts every five minutes. All players see the same board and pieces, and the first to find a valid arrangement wins that round. You can also practice with any of the 366 dates to build your skills.
Tips
- With 43 cells and eight pieces, each piece must cover roughly five cells on average. Plan your placements in large sections rather than cell by cell.
- Because all 366 dates have a known solution, trust that today's puzzle is solvable. If you feel stuck, try rotating or flipping a piece to see a new orientation.
- The strategy course explains geometry and parity, which are central to understanding how the pieces fit together. Reviewing it can reveal common patterns and traps.
- In five-minute multiplayer rounds, the board is identical for everyone. A methodical approach often beats a hasty one, so check your coverage before confirming.
Common questions
Is a new puzzle generated every day?
Yes. The daily puzzle presents a different month and day each day, and the board changes accordingly. All 366 date combinations have at least one valid solution, so you will never face an unsolvable puzzle.
Do I need to create an account or download anything to play?
No. Calendar Puzzle is free to play directly in your web browser. There is no download required and no signup process. You can start solving immediately.
How often do multiplayer rounds start?
Multiplayer rounds begin every five minutes. In each round, all participants receive the exact same board and set of eight pieces, ensuring a fair competition to find the solution first.