Sudoku
Sudoku is a popular logical game with easy rules. In this game you will be given a grid of numbers and you should finish the grid by putting numbers into it. The numbers in a row or column or group cannot repeat, you can use your logical thinking to deduce what number should be in a given place. This puzzle provides excellent training for the logical mind.
Come and play to find out why so many people are addicted in this simple logical game.
Basic Strategy
There are two basic strategies that you can use:
1) Find the only possible position of a number in a group (or row, or column), e.g.:
In the third group, consider the only possible position of the number 9:
As the first two rows of this group already have 9's, the only possible position of a 9 in this group is in the remaining block of the third row:
2) Find the only possible number that can appear in a block, e.g.:
Consider the highlighted block:
It cannot be 2, 3, 4, 5 (because they are in the same group), it cannot be 6, 7, 8, 9 (because they are in the same row), the only possible number is 1:
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