The following Sudoku formats are supported on this site. Click on the text link to go to the appropriate solver. 

The classic Sudoku grid consists of nine 3 by 3 regions. 

Similar to Sudoku except played with letters instead of numbers 

A Shi Doku grid consists of four 2 by 2 regions. This simple solver is ideal as a starting point for children learning to solve Sudokus. 

A Roku Doku grid consists of six 3 by 2 regions. This solver is ideal for beginners. 

The 8 by 8 solver consists of eight 4 by 2 regions. 

A Maxi Sudoku consists of twelve 4 by 3 regions. 

A huge Sudoku consists of sixteen 4 by 4 regions. 