Sudoku is a game of logic. On the grid there are nine areas each with nine squares inside. Each area must have all the numbers from 1 to 9 in it, and each vertical column and horizontal row must also have every number from 1 to 9 in it. ( SO YOU CANNOT HAVE TWO OF THE SAME NUMBERS IN ANY COLUMN, ROW OR AREA). It is your task to fill in the missing gaps with the correct numbers.
SHIVA Charity (UK) puts these free educational pages on its web site in order to be used primarily in Nepal, and Sri Lanka, where lessons are mostly repetitive "chalk and talk" and curriculum restrained. We are involved in teachers' resources training there, and hope that schools in the UK and elsewhere will support SHIVA Charity's cause with funding. Please visit our main pages to see the work we do, and how we raise money for individual projects and for child sponsorship.