A sudoku puzzle can be very easy, extremely hard, or somewhere in between, depending on the techniques required to solve it. This page estimates the difficulty level of a given puzzle based on the difficulty of the strategies that must be used to solve it. Enter a puzzle string below (see the main sudoku page and look above the puzzle for an example) and click Grade Puzzle to find out the estimated difficulty level.

### Sudoku Difficulty Estimator

You submitted .8...2.4.5.9.6.2.13......6..3..47.2.2...351.4.67.8...5.524..3..9....6....1...8.97

Estimated Difficulty Level: **Very Easy** (Difficulty Score: 1 out of 6)

Enter a sudoku string (see example):