Colouring NestMedium Sudoku #8
- Ages 10+
- Medium
- 2 pages
- Sudoku
- Answer key
- PDF: Letter & A4
Tip: download the PDF for Letter or A4 paper, print it at 100% and use a pencil or crayon. Tap "Show solution" to check your answer, or print it as an answer key.
Up nextMedium Sudoku #9 →A 9×9 sudoku for improving solvers from about age 10, with fewer numbers given: every square still follows from simple logic, but you have to look across rows, columns and boxes together. 32 of the 81 squares are filled in. Fill the rest so that every row, column and 3×3 box has the numbers 1 to 9 once each. Every puzzle here has been checked by a solver to have exactly one solution.
Text version of the puzzle
. . 7 | . . 8 | . . 2 . 4 . | 5 6 3 | . . . 3 . . | . 7 . | . . . 8 . 1 | 3 5 . | . 6 . 7 . 5 | . . . | 4 . 8 . 9 . | . 8 6 | 1 . 5 . . . | . 2 . | . . 3 . . . | 8 4 5 | . 1 . 1 . . | 6 . . | 8 . .
A dot is an empty square; a bar separates the boxes.
More puzzles: Nonograms · Mazes · Large-print sudoku
For teachers and parents
- What it practises
- Logical reasoning, working through options one at a time, number (or picture) recognition
- How to use it
- Look at one row, column or box and ask which number is missing. Write in only the numbers you are sure of; a pencil and eraser help. Check with “Show solution” or the answer key on page 2.
- Time
- About 20–30 minutes
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Printing tips
- Print at 100% (actual size) and solve in pencil so mistakes rub out.
- Print page 2 separately as the answer key.
- For picture sudoku, print page 1 twice: one to solve, one to cut the pieces from.