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.