Quintillions of Sudoku Problems For All Skill Levels!
Sudoku Republic, hosting over 18,000,000,000,000,000,000 puzzles!This is a 16x16 Sudoku puzzle in which the numbers 1 through 16 must
appear exactly once in each column, row and 4x4 box. There are many different sizes
and variants of the classic sudoku puzzle, many of which are represented in this website.
Want to improve? Take a look at our tutorial pages. You may find them very helpful!