Spring - Hard Sudoku (Butterfly)

This Hard Sudoku puzzle features a 9x9 Sudoku puzzle to solve and a picture of a butterfly to color. The Sudoku puzzle is printable and changes each time you visit or click on the Refresh button below.

With this Sudoku puzzle generator, you can easily create new puzzles to use in the classroom or at home.

The puzzle also has an optional answer key checkbox that you can select, if you wish to print out the answer key.

Level of Difficulty: Hard

Sudoku Strategy: To solve the puzzle, you need to fill in the missing numbers (from 1 to 9) so that each column, row and 3x3 subgrid does not contain the same number more than once.

Spring Sudoku Key

683179524
154823769
792645183
549287316
326514897
817936452
465791238
978352641
231468975
sudoku puzzle with a butterfly

 Check this box to display the answer key

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