🎲 Sudoku Variants
Sudoku Variants: 12 Types of Sudoku and How They Work
Discover 12 Sudoku variants, from mini 6×6 and Sudoku X to Jigsaw, Killer, Samurai, Thermo and Sandwich: the extra rule in each and which one to try first.
🎲 Sudoku Variants
How to Play Killer Sudoku: Rules, Cage Combinations and Tips
Learn how to play Killer Sudoku: the cage rules, a combinations cheat sheet, the rule of 45 and step-by-step first moves, shown on a real Killer Sudoku puzzle.