Free printable · With answers
Free Printable Dominosa Puzzles
Draw the dominoes back onto a grid of numbers. Every pair appears exactly once, so each domino you find rules others out.
About Dominosa Puzzles
Dominosa starts with a full set of dominoes laid out in a rectangle, with the outlines erased. Your job is to draw them back in. Because every pair from the set appears exactly once, finding one domino tells you a lot about where the others cannot be.
How to solve Dominosa
- Pair the cells: Split the whole grid into dominoes, each covering two side-by-side cells.
- Every pair once: A double-6 set has every pair from 0-0 to 6-6 exactly once.
- No repeats: 2-5 and 5-2 are the same domino, so it appears only once.
- Full coverage: Every number belongs to exactly one domino.
Reading the sheet
- A double-4 set uses the numbers 0 to 4, a double-6 set 0 to 6, and so on.
- The answer key outlines every domino.
Questions
How do I start a Dominosa?
Find a pair that can only sit in one place in the whole grid. That domino is forced, and its cells are now used up.
How do I save these as a PDF?
Press Print / Save PDF and choose "Save as PDF" as the printer. Press New puzzles for a different set; there are 500 to draw from.
Play Dominosa online
Solve with undo, hints and a fresh puzzle whenever you want, right in your browser.