✅ 7 new puzzles, from Easy to Extreme
✅ Solving guide
✅ Quick reference cheat sheet
✅ Skills tracker
✅ Solutions
The all-new challenge uses our unique Properly Clear, Properly Graded Killer Sudoku grids, for a superior solving experience. Try our subtly shaded cages with optimised clue numbers, and see our custom human-calibrated and validated difficulty scoring system at work. But beware: once you've tried these puzzles, it will be hard to go back to basic grids!
Test your logical deduction prowess. Challenge a friend. Or if you’re feeling really confident, why not race someone?