Context

Classic Sudoku is the basic type of sudoku which requires you to fill in the digits 1-9 such that every digit appears exactly once in each row, column and 3x3 box. Each sudoku has a single unique solution.

Content

Each row represents a sudoku puzzle and it's corresponding solution. The order of digits is left-to-right and top-to-bottom with 0's representing blank cells in the puzzle.

Inspiration

Having created hand-crafted sudokus and its variants over the years, it would be interesting to see machine learning applications on analyzing, summarizing and solving sudokus.

Why 9?

Sudoku is all about digits 1-9 and hence the dataset is themed on 9 with 9 million puzzles.