Shop
Grade workbooks
Sudoku · Hard 9 by 9 · Grades 5+
Hard Sudoku Puzzles for 5th Grade and Up
A real challenge for strong 5th graders and adults: few clues, careful thinking, one answer each. 6 puzzles, each with exactly one answer, and an answer key at the end.
How to solve a 9x9 sudoku
- Every row, every column and every 3 by 3 box needs the numbers 1 to 9, once each.
- Find a row, column or box with only one empty square, and fill in what is missing.
- Choose one number and check each box: where can it still go?
- When you finish, check each row and column one more time.
More sudoku
Medium sudoku puzzlesMedium 9 by 9 · grades 4-5 · 6 puzzles · 3 pagesFewer starting numbers, so children need to plan two or three steps ahead. For 4th and 5th grade.
Easy sudoku for kidsEasy 9 by 9 · grades 3-4 · 6 puzzles · 3 pagesFull-size 9x9 sudoku with plenty of numbers given, so children can solve every square by simple scanning.
6x6 sudoku puzzlesNumbers 1 to 6 · grades 2-3 · 10 puzzles · 4 pagesThe step between 4x4 and 9x9: six numbers, boxes of 2 by 3. Ideal for 2nd and 3rd grade.
Medium sudoku puzzles
Easy sudoku for kids
6x6 sudoku puzzlesCommon questions
What is in this pack?
6 9x9 puzzles on 2 pages, then an answer key on the last page. Page 1 also has the rule and three solving tips.
What are the rules?
Every row, every column and every 3 by 3 box must have the numbers 1 to 9, each exactly once. Each puzzle has only one answer, so no guessing is needed.
What grade is it for?
Grades 5+. A real challenge for strong 5th graders and adults: few clues, careful thinking, one answer each.
Mazes
Riddles
Would you rather
All puzzles
