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Really stumped? This site will solve any "solvable" Sudoku puzzle, totally free. I'm not selling anything here, just doing this for fun. Either just one step or you can jump to the fastest solution to your puzzle, the steps the program takes are shown so you can print it out as a cheat sheet or whatever you want, it's up to you!. I've tested this with some very difficult puzzles and haven't yet found one that it won't solve. If you have any trouble with this just drop me a note, my email is scottp at sonic.net. Enjoy!! To use the example puzzle, press SOLVE Or press CLEAR to enter your own puzzle to be solved |
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This solver first tries the following logical methods: Single Item Search Single Unit Search -the following are often referred to as disjoint subsets: -pair -three values in three locations -four values in four locations -five values in five locations X Wing -"generalized" xwing -remote pairs -xy chains Forcing Chains Swordfish Burma (and other Swordfish variations) XY wing XYZ wing If none of these work, then it will resort to Trial and error or Nishio. This looks for a location with a pair of candidates and choose a single one of them as a guess. This will continue until it has found a solution, determines the puzzle has no solution or determines that there are multiple solutions to the puzzle. |