How do you do soduko

Question

 I need to do it for a school project

Answer 1

Like any puzzle or game, it is important to (1) understand the rules.  This helps players to (2) develop a strategy for playing, because the rules indicate what "winning" or "solving" means.  Then, the player may (3) choose a game plan this game.  The game plan may get more and more complex, for example, as when a player develops the ability to remember the moves of other players and to understand their strategy.

 

For Soduko, the goal is to fill in the empty boxes with numbers that create a specific total when added by rows, by columns, and by diagonals.  See --https://www.wikihow.com/Solve-a-Sudoku

 

If the players addition skills are good, they will begin to recognize patterns.  Still, there will be lots of erasing (so the suggestion to use a pencil and to keep notes is a good one).

 

  . . . (more methods)

 

Way beyond most casual Soduko players is the Recursion Method of solving a Soduku puzzle that is taught in Computer Science courses.  Here, the procedure accepts the initial puzzle, iteratively puts the next possible number in the first empty box, then calls itself to complete the puzzle (telling itself that it is getting an initial puzzle).  When there are no more boxes (the base case), the puzzle is solved.  When there are no more numbers to put into the current box (the recursive case), the procedure returns "can't do it" and the previous copy of itself tries the next number to determine whether rules are met thus far.   It may also return a "can't do it," but eventually, with a solvable Soduko puzzle, a legal solution is put in every empty box in the initial puzzle.  NOTE:  That is one reason the initial puzzle has some blocks already filled in. 

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There are online sites that run Soduko puzzle programs.