Expert Sudoku

Play free Expert Sudoku online with X-Wing, XY-Wing, Swordfish, and advanced candidate patterns.

Play Expert SudokuGet the iPhone app

What to expect

Expert grids combine several deductions before a placement appears. Progressive hints identify the pattern and explain why its eliminations are valid.

Techniques in this level

X-WingXY-WingSwordfish

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.