Slow Squares

Advent calendar 2026

24 doors from 1 to 24 December, a puzzle behind each. On screen they open one a day; on paper, all at once.

10 × 10 Christmas pictures; the other boards run from 6 × 6 to 7 × 7.

  1. 1Nonogram
  2. 2Wednesday Frog
  3. 3Tents and Trees
  4. 4Nonogram
  5. 5Bridges
  6. 6Nonogram
  7. 7Binario
  8. 8Nonogram
  9. 9Frog Slalom
  10. 10One Star
  11. 11Nonogram
  12. 12Suguru
  13. 13Tents and Trees
  14. 14Nonogram
  15. 15Binario Signs
  16. 16Sinking Leaves
  17. 17Bridges
  18. 18Nonogram
  19. 19Kakuro
  20. 20Nonogram
  21. 21One Star
  22. 22Binario Blocks
  23. 23Wednesday Frog
  24. 24Nonogram
Download the whole calendar (PDF)

All 24 boards on A4, with the rules but no solutions. On paper, every door is open from the start.

Your Christmas picture

Each Christmas picture you uncover takes its place here. The last one, on 24 December, goes in the middle.

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How it works

A new door opens every day. Nine of them hide a Christmas picture to uncover square by square, every Wednesday belongs to the frogs, and the rest hold more of our games. A door you missed stays open, so you can catch up whenever you like.

There are three versions, each with its own 24 doors: one with small boards for the youngest, an easy one and a medium one. Every board has exactly one solution, and reasoning alone gets you there.

It is free, with no account and no advertising. Your moves stay in this browser.

On paper

Each version prints as one PDF: a cover with all 24 doors to tick off; the rules of every game in it; the boards, two side by side where they fit; and a last page with a frame to copy the pictures into. Print it at home, at school or at the library.

Teachers are welcome to print it for a whole class and hand it out free of charge. Please leave the slowsquares.com address on it, so next year’s calendar can be found too.