Broadly accepted classification of a sudoku puzzle's difficulty level Is there a broadly accepted classification of a sudoku puzzle's difficulty level? I'm getting somewhat fed up with ridiculously labeled puzzles, such as diabolic, expert, evil.

When an average solver such as myself can solve a puzzle in 5 minutes without even having to resort to the use of pencil marks, and when such puzzles require next to no tactics or strategies beyond common sense and logic then "Evil", Diabolic" etc all seem misnomers.