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 9x9 Number Place Puzzle.
START Start the random 9x9 number place puzzle. The difficulty is random. The grid which can be solved by simple scanning is 1 point. The other grids are 2 points.
Click the grid and select the digit to fill the grid. Select [M]/[B] to change the mode Normal/Marking.
EDIT Input the puzzle and click SOLVE , then the solver will fill the empty grids. Click CANCEL to stop the solver when the puzzle has no answer.

