Fun: easy Sudoku puzzles The modern version of Sudoku was invented in 1979 by Howard Garns in USA (where it was called `Number Place').  It became really popular in Japan in the 1980s and in the UK since late 2004. It is now quickly spreading worldwide.  The word Sudoku is an abbreviation of a phrase which means “the digits must occur only once”. The aim of a Sudoku puzzle is to fill in the grid so that each row, each column and each box contains all the numbers once. Usually the grid is 9 by 9, using the numbers from 1 to 9, and it is not so easy to find smaller grids, suitable for younger children. This is where we come in with some easier grids using numbers from 1 to 4 or 1 to 6. Our latest sets, just published, use the numbers from 1 to 6. Simple eh! Of course not!  Sometimes it is easy but often it can be fiendishly difficult, especially if you are young. They are great for developing logical thinking. These are just a small part of our resources in Wet Break/Holiday Activities where we have a rich variety of activities which are fun to do but have serious mathematical content as well. Go to our Wet Break/Holiday Activities