Printable sudoku puzzles — 4 per page
Four full 9 by 9 puzzles on one sheet, each generated with a unique solution so none of them needs a guess, and all four answers on the second page. One sheet is a week of coffee breaks, or a class set for four students.
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Sudoku — four puzzles
Name: ______________________ Date: ______________
Puzzle 1
| 5 | 3 | 4 | 9 | |||||
| 2 | 8 | 1 | 7 | |||||
| 9 | 8 | 4 | 2 | |||||
| 4 | 5 | 6 | 1 | 8 | 9 | |||
| 7 | 8 | 4 | 9 | 5 | 3 | |||
| 2 | 7 | 4 | ||||||
| 4 | 7 | |||||||
| 8 | 1 | 2 | 4 | |||||
| 1 |
Puzzle 2
| 1 | 4 | |||||||
| 1 | 7 | 4 | 3 | 6 | ||||
| 8 | 5 | 9 | ||||||
| 3 | 2 | 1 | 8 | |||||
| 5 | 8 | 6 | 7 | 3 | ||||
| 7 | 1 | 5 | 9 | 4 | ||||
| 8 | 6 | 7 | ||||||
| 9 | 8 | |||||||
| 3 | 5 | 6 | 4 | 9 |
Puzzle 3
| 6 | 5 | 4 | 8 | 1 | 3 | 2 | ||
| 9 | 5 | 8 | ||||||
| 2 | 7 | 8 | ||||||
| 3 | 6 | 5 | ||||||
| 9 | 6 | 1 | 5 | |||||
| 8 | 2 | 3 | 6 | 9 | 7 | |||
| 7 | 9 | 1 | 2 | 4 | ||||
| 6 | 9 | 1 |
Puzzle 4
| 4 | 8 | 3 | 7 | |||||
| 7 | 1 | 6 | 9 | 4 | 3 | |||
| 5 | 7 | |||||||
| 9 | 4 | 5 | ||||||
| 2 | 6 | 9 | 4 | |||||
| 5 | 8 | 7 | ||||||
| 6 | 4 | 5 | 8 | |||||
| 1 | 3 | 5 | 7 | |||||
| 5 | 2 | 9 | 6 |
Every row, every column and every outlined box must contain the digits 1 to 9 exactly once. Print at 100 percent; a "fit to page" setting shrinks the cells until they are hard to write in.
Sudoku — the four answers
Each puzzle has exactly one solution.
Puzzle 1
| 1 | 7 | 5 | 3 | 4 | 2 | 9 | 6 | 8 |
| 2 | 6 | 4 | 8 | 1 | 9 | 7 | 3 | 5 |
| 3 | 9 | 8 | 5 | 7 | 6 | 1 | 4 | 2 |
| 4 | 5 | 6 | 2 | 3 | 1 | 8 | 9 | 7 |
| 7 | 8 | 1 | 4 | 9 | 5 | 6 | 2 | 3 |
| 9 | 3 | 2 | 7 | 6 | 8 | 5 | 1 | 4 |
| 6 | 4 | 7 | 1 | 5 | 3 | 2 | 8 | 9 |
| 8 | 1 | 3 | 9 | 2 | 7 | 4 | 5 | 6 |
| 5 | 2 | 9 | 6 | 8 | 4 | 3 | 7 | 1 |
Puzzle 2
| 7 | 3 | 5 | 9 | 6 | 8 | 1 | 4 | 2 |
| 1 | 2 | 9 | 7 | 4 | 3 | 8 | 5 | 6 |
| 8 | 6 | 4 | 5 | 1 | 2 | 9 | 7 | 3 |
| 4 | 9 | 3 | 6 | 2 | 1 | 7 | 8 | 5 |
| 5 | 8 | 6 | 4 | 9 | 7 | 3 | 2 | 1 |
| 2 | 7 | 1 | 3 | 8 | 5 | 6 | 9 | 4 |
| 9 | 1 | 2 | 8 | 3 | 4 | 5 | 6 | 7 |
| 6 | 4 | 7 | 1 | 5 | 9 | 2 | 3 | 8 |
| 3 | 5 | 8 | 2 | 7 | 6 | 4 | 1 | 9 |
Puzzle 3
| 6 | 5 | 7 | 4 | 8 | 1 | 3 | 2 | 9 |
| 1 | 3 | 9 | 7 | 6 | 2 | 5 | 8 | 4 |
| 2 | 8 | 4 | 3 | 5 | 9 | 1 | 7 | 6 |
| 5 | 4 | 2 | 1 | 3 | 7 | 9 | 6 | 8 |
| 8 | 7 | 3 | 2 | 9 | 6 | 4 | 5 | 1 |
| 9 | 6 | 1 | 8 | 4 | 5 | 7 | 3 | 2 |
| 4 | 1 | 8 | 5 | 2 | 3 | 6 | 9 | 7 |
| 7 | 9 | 5 | 6 | 1 | 8 | 2 | 4 | 3 |
| 3 | 2 | 6 | 9 | 7 | 4 | 8 | 1 | 5 |
Puzzle 4
| 4 | 8 | 3 | 6 | 2 | 5 | 7 | 1 | 9 |
| 7 | 1 | 6 | 8 | 9 | 4 | 2 | 5 | 3 |
| 9 | 2 | 5 | 3 | 7 | 1 | 8 | 6 | 4 |
| 1 | 7 | 8 | 2 | 3 | 6 | 9 | 4 | 5 |
| 2 | 6 | 9 | 5 | 4 | 7 | 1 | 3 | 8 |
| 3 | 5 | 4 | 1 | 8 | 9 | 6 | 7 | 2 |
| 6 | 9 | 7 | 4 | 5 | 2 | 3 | 8 | 1 |
| 8 | 4 | 1 | 9 | 6 | 3 | 5 | 2 | 7 |
| 5 | 3 | 2 | 7 | 1 | 8 | 4 | 9 | 6 |
What is on the sheet
- Four separate 9 by 9 grids, each with its own givens and its own solution — not the same puzzle printed four times.
- Each grid keeps the nine outlined boxes, and each one was checked at build time to have exactly one solution, so "I got stuck" always means a logic step was missed rather than the puzzle being broken.
- The name and date line at the top, which is what turns four puzzles into a worksheet.
- The answers on page two, in the same order as the puzzles.
How to print
- Print at 100 percent. Four 9 by 9 grids on one page only stay legible at full size; a "fit to page" setting makes the cells smaller than the digits.
- Print the two pages back to back and the answers end up behind the puzzles — which is either convenient or fatal, depending on who is solving.
- Print page one twice and keep page two if you are handing the sheet to a class.
- Black and white is fine. The sheet uses lines and solid digits rather than colour.
How to solve one without guessing
Work in a single pass and look for cells that have only one candidate left. Scan each row for a digit that already appears eight times — its only home is the empty cell, and that is a free placement. Repeat for each column, then for each box. When no single candidate remains, look for a digit that has exactly two possible homes in a row, a column or a box: if both homes sit in the same box, the digit cannot appear anywhere else in that box, which removes candidates elsewhere. Guessing is the last resort, and on a sheet like this it is rarely needed.
Four puzzles is a good sequence for that: use the first one only for singles, and allow yourself the more advanced elimination on the third and fourth.
Sudoku on a screen
The sudoku game has three difficulties, highlights conflicts as you type and can explain a hint instead of just giving the number. There is also a daily sudoku that is the same puzzle for every player on a given day, with a streak counter, and a starter sheet with one 4 by 4 and one 9 by 9 if four puzzles is too many.