Fiendish Sudoku: What the Hardest Difficulty Level Really Means
Plus Fiendish Sudoku is the top difficulty rating in The Times' daily Sudoku, sitting above Easy, Medium, Hard and Difficult. A Fiendish puzzle can't be cracked with basic scanning alone —…
sudoku difficulty
Sudoku Evil 17: What the 17-Clue Minimum Really Means
"Sudoku Evil 17" refers to the hardest class of Sudoku puzzles: evil-difficulty grids built on just 17 starting clues — the proven mathematical minimum for a valid 9×9 Sudoku. In…
What Is the Sudoku Game? Rules, History and How to Play
The sudoku game is a logic puzzle played on a 9×9 grid, where you fill empty cells with the digits 1 to 9 so that every row, every column and…