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Expert Sudoku
The deep end. Expert puzzles — sometimes called "evil" Sudoku — withhold almost everything obvious and reward patient, methodical elimination. Still 100% logic, still exactly one solution.
Play Expert Sudoku free →Built for serious solvers
An expert board on Playoku is graded to require the hardest techniques in the game. Expect to lean on tidy candidate notes, X-Wings and chained eliminations — and to earn every digit you place.
- Maximum-difficulty puzzles, each guaranteed solvable by logic alone.
- Notes mode is your workbench — keep every candidate current.
- Undo, redo and hints for when a chain finally snaps.
- Free, no sign-up, with auto-save for the long ones.
Bring the right tools
Brush up with the Sudoku tips & strategies guide before you dive in — the X-Wing and pair techniques there are exactly what expert boards demand. Need to step back? Hard and Easy are a click away.