how to solve suduku puzzle?

Answer 1

Type "sudoku solver" into google and you'll find reams of solvers. Some show you the steps as they solve it.

Answer 2

Using a solver sort of defeats the purpose of doing the puzzle. It's no longer you solving the puzzle, it's the programmer who wrote the solver.

I've found two "methods" that work most of the time on all but the most fiendish of puzzles:

Start with the box with the most numbers in it and work to fill it. "Pencil in" all the possibilities for squares you are not sure of. Checking rows and columns will many times tell you what numbers CANNOT go in a square. When you can go no further with the first box, go on th the next fullest box, and so on. As you become certain of numbers, do a row-and-column scan to eliminate those numbers.

The second method is to start with a number, doing row-and-column scans to se where it may or may not be placed in other boxes. Many times you can determine the location of the number in every box (nine locations). Again, "penciling in" possible squares can be a big help. Proceed through all 9 numbers. On an easy puzzle, you will usually totally place 3 or 4 numbers on your first run-through. Next, try completing rows, then columns. Do a 2nd digit-by digit run-through if necessary, and try to fill boxes. Remember in each case to erase penciled in possibilities when they are no longer possible.

Hint: if you have penciled two and only two numbers in two squares of a row, column, or box, those are the ONLY squares where those two numbers may go. You can eliminate them from other squares.

Some of the tips from the reference apply only to "Sudoku Quest". Other on-line puzzle offerers use diferent rules & clues.

Answer 3

Well, there are 9 bolded sections on one sudoku grid or whatever you want to call it. The objective is to fit #'s 1-9 vertically, horrizontally, and in those bolded sections. Use a pencil for a beginner.

Answer 4

ok. so i dun no if you know how to do them so im gonna tell you anyway. ok. so what you do is in each of the squares you have to put the numbers of 1-9 ONCE. you also have to get the numbers 1-9 ONCE in each line going across. meanwhile you also have to get the numbers
1-9 ONCE going in each line going down.
ok. so now is what you usually have to do is try and start on the line/box that has the most numbers already filled in.
i dont know if that helped but hope it did.
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