introduction
Summarize the results and the challenges.

  Methodology
Describe your approach, include screen shots as needed.
-creating 9 threads (one per column) to check that each column contains the digits 1 through 9
-creating 9 threads (one per row) to check that each row contains the digits 1 through 9
-creating 9 threads to check that each of the 3 3 subgrids contains the digits 1 through 9
-combining and printing the results from the threads

  Results
You also need to provide an analysis of your results. What worked and what did not and why ?

  Summary
Include your conclusions. What did you learn? How would you improve on your approach?