Sudoku - also known as "Number Place" - is a logic-based, combinatorial number-placement puzzle. The aim of Sudoku is to enter a number from 1 through 9 in each cell of a grid, most frequently a 9×9 grid made up of 3×3 subgrids. Each row, column and region must contain only one instance of each number.
This Sudoku variant is called "Butterfly Sudoku". The puzzle consists of four 9×9 grids. The numbers must be placed correctly for all four grids.
Use this form to create printable Butterfly Sudoku puzzles. The puzzles can be downloaded as PDF files and freely used, as long as the link back to www.sudoku-puzzles.net alongside the puzzle is not removed.
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