Free Expert Killer Sudoku
Play Expert Killer Sudoku directly in your browser with candidate notes, hints, undo, a timer and progress saved on this device. Every cage must reach its printed sum without repeating a digit, while every row, column and 3×3 box must still contain 1–9 exactly once.
How to approach an Expert Killer puzzle
Begin with cages that have few possible combinations, then use row, column and box restrictions to eliminate candidates. Expert puzzles reveal fewer starting digits, so accurate notes and careful cage arithmetic matter throughout the solve.
Expert Killer Sudoku questions
Can I play Expert Killer Sudoku for free?
Yes. This Expert Killer Sudoku is completely free to play online, with no download, registration or account required.
What makes Expert Killer Sudoku difficult?
It combines challenging sum cages with fewer revealed digits and more candidate elimination than easier Killer Sudoku levels. If you need a gentler start, return to the Killer Sudoku page and choose a lower difficulty.