Puzzlo: Sudoku & Mathdoku

Now with Kakuro! Two new Cross Sums puzzles daily, alongside Sudoku, Killer Sudoku and Mathdoku. Every puzzle logic-solvable — no guessing. Plus offline play.

Puzzlo brings you a fresh set of hand-crafted number puzzles every day.

FOUR PUZZLES, EVERY DAY • Sudoku — the classic, across a range of difficulties • Killer Sudoku — Sudoku with cages and sums • Mathdoku — arithmetic meets logic on a Latin-square grid • Kakuro (Cross Sums) — NEW! Fill runs that add up to each clue (9×9 and 11×11)

DESIGNED FOR SOLVERS • Every puzzle is logic-solvable — no guessing required • Pencil-mark notes, mistake checking, and unlimited undo

KEEP YOUR STREAK • Track completions, days played, and your daily streak • Browse your history, and download days to play offline

No accounts. No ads. Just a great puzzle every day.