Medium Sudoku

Play free Medium Sudoku online and practice locked candidates, intersections, and deliberate candidate elimination.

Play Medium SudokuGet the iPhone app

What to expect

Medium grids ask you to connect information across a box and its crossing rows or columns while keeping every step logically explainable.

Techniques in this level

Hidden SingleLocked Candidates

Hints stay progressive: see the pattern, understand why it works, then apply the result.

Other difficulties

Beginner

Build confidence with clear next moves.

Easy

A calm, quick logic workout.

Medium

Move beyond singles.

Hard

Work through pairs and intersections.

Expert

Find fish, wings, and precise eliminations.

Master

Follow coloring and logical chains.