JiuGongGe sudoku, is a kind of derived from the 18th century of Switzerland,
In America after development, and in Japan to carry forward the digital puzzle.
Sudoku disk is a jiugong, each palace and divided into nine little squares.
In this case is given in certain 81 known digital and problem solving condition,
Using logic and reasoning, in other box fill in 1-9 number.
Make 1-9 each number in each row, every column and each palace only appear once.
This game comprehensive test to solve the observing ability and reasoning ability, although play simple,
But digital arrangement is protean, so many educators think sudoku is training the perfect way to mind.