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Sudoku Solver - Unique or Multiple Solution Finder

Enter a sudoku puzzle string below (see the Thonky.com sudoku page for an example of a puzzle string in the text area below the puzzle), then click the Count Solutions button to find out if the puzzle has a unique solution, multiple solutions, or no solutions (i.e. an invalid puzzle). All valid solutions will be listed.

Enter a sudoku string (see example):

Number of solutions: 1

Solved in 0.0013971328735352 seconds

Original puzzle: .1..6.7.93.........9.......7....84...4.1.....9...4.137.7..869..6..5..2...2.4.7.61
Solution:
412863759387954612596721384761398425243175896958642137175286943634519278829437561

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