Sudoku/en

Instructions

   

Enter numbers from 1 to 'n' into the diagram, such that in every row, every column and every bold bordered area every digit appears exactly once.

 

History

Sudoku has probably been created in 1979 in the USA with the name 'Number Place'. From there it reached Japan in 1984.

Variants

There are a lot of variants...

• With irregular shapes: Instead of the 3x3 areas, the sudoku consists of irregular shaped areas.