Introduction Last months I solve one medium difficult Sudoku on a daily base to keep my cognitive abilities in shape. Now last week I caught a cold and fell ill. Instead of boring myself at home I thought, 'Lets make a Sudoku Solver in MS-Excel'.

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Sudoku Solver Code in Excel Author: Ajay Keywords: Sudoku Solver Description (c) www.databison.com Please visit databison for more information. This code can be. Sudoku Solver – Excel Games Puzzle. Sudoku is one of the famous Math games that will test your memory capability. Here is the list of instructions about how to play this game.

Below is the result. Follow the instructions below and have fun. Maybe you'll learn something! Disclaimer * The VBA-code is free of virusses, including my flu-virus, which is sad, since I would like to share that with the whole community. * The Sudoku Solver should solve all easy and medium level Sudokus. * It should solve many of the difficult level Sudokus as well. * The Sudoku Solver could only solve Sudokus with one single sollution!

* One solving sollution mechanism is lacking, because that is way complex to program. Maybe next year, when I fell ill, I will program it.

I will illustrate the lacking mechanism with an example. If two squares only could contain 4s and 8s the other seven squares couldn't contain those values. Simular mechanisms could theoretically also exist in combinations of 3 or more. If someone sees the challenge to program it. Go ahead and make my day! * If you are stuck with finding a sollution, trial and error in the Solver-grid to come to the right sollution. Eventually you should restart a few times.

* It should be easy to handle the Sudoku Solver. * Feel free to adjust the Sudoku Solver. Instruction * Font of the whole sheet is Arial.

* Cell A1: 'Sudoku Solver', 18pt, Bold * Cell A2: 'Author: Harmonica', 11pt, Italic * Cell A3: 'Date: 4 November 2017', 11pt, Italic * Cell B7: 'Sudoku', 14pt, Bold * Cell L7: 'Solver', 14pt, Bold * Cell L20: 'Round:', 11pt Italic * Cell N20: '(0=Reset)', 11pt * Cell L21: 'Note:', 11pt * Cell M20: 11pt * Cell M21: 11pt * Cells B9-J17: 16pt, Bold with borders * Cells B39-J47: 16pt, Bold with borders * Cells L9-T17: 10pt, Bold with borders * Columns B-J: Width=4 * Columns L-T: Width=10 * Copy-Paste the VBA-Code to a VBA Module. It won't work otherwise. The easiest way to create a module is to Record a Macro, Type Some Text and Stop the Recording.

* In Excel you need to activate the Developers tab. * Create below the Sudoku 5 Buttons with the captions 'Solve One Round', 'Save Sudoku', 'Restore Sudoku', 'Random Value' and 'Clear Sudoku', 12pt, Bold. * Apply the right Macro to the right Button. * Save your work and try it. Have you tried the Skyscrapers or Sumscrapers puzzles? They're similar--still fitting one of each digit in each row and column--but use a different mechanism than the 3x3 square to constrain the problem.

They provide the same type of enjoyment--hunting for that one move that you have enough information to deduce, which then opens up another move, etc.--but I often prefer them. There are good examples of both (and many other types of logic puzzles) in the app '100 Logic Games' by Andrea Sabbatini. Free torrent download math books pdf. I know it's available for iOS.not sure about other platforms.

• • • • • • • • PLEASE FULLY READ THE SIDE-BAR BEFORE SUBMITTING A POST! SUBMISSION GUIDELINES FAQ PROBLEM SOLVED? OPs can reply to any solutions with: This will award the user a and change the flair to SOLVED. TO APPLY CODE FORMATTING Use 4 spaces to start each line You can select code in your VBA window, press Tab, then copy and paste into your thread or comment.

PROVIDE YOUR DATA! Include a or use the website to generate the reddit table markup from your spreadsheet. Recent ClippyPoint Milestones! Congratulations and thank you to these contributors Date User CP 100 10 10 25 10 10 10 10 25 100 800 10 25 A community since March 11, 2009 Download the official to convert Excel cells into a reddit table. Using the “All Different” constraint would definitely be better if your version of Solver has that. I was just thinking of using “COUNTIF” across the whole grid to count the instances of each number 1-9.

Then you could constrain them to be equal to 9 (not binary sorry). But then you’d have a non-linear LP. Also you’d then need another constraint to make sure the solution wouldn’t have two 5s in a row and none in another. This is where allDifferent would help, because then you could just constrain them to be integers and 1-9.