About Puzzku

Puzzku is a free collection of printable puzzles. We start with sudoku: easy, medium, hard, and expert PDFs that are ready to download and print.

Every puzzle is generated and checked to have exactly one valid solution, and each PDF includes a full answer key. There is no account, no signup, and the ready-made downloads always work.

You can also generate a fresh set of puzzles right in your browser — nothing is uploaded, and everything is created on your own device.

These puzzles are free resources for personal, classroom, and family use. More puzzle types are on the way.