Report Prove that you solved sudoku in New Logic/Math Puzzles Posted October 19, 2015 after a week long journey abroad, now I'm active again.@phil1882: The solution does not require a computer. I do not see well encrypting decrypting by hand. All you need: scissors, paper, pencil.After thinking again, and using the clue harrey give us (scisors, pen, and paper),Yes it is possible to prove it without computer, but it takes many steps.1. You write your solution on a answering paper.2. Put it with back side up on the floor, and ask your friend (who need prove) to numbering it. Better numbering it like (horz, vert) format3. Cut it to smaller peaces, every squere (with a number) 1 peace.4. Rearrange it with back side up, then turn over/show the numbers in question in the right place. (means you are not cheating)5. now take all the squares in first row, suffle it, turn then over secreatly, and show them to your friend, that all number from 1 to 9 are there.back to step 4 and do the same with other rows (vert and horz). and other 3x3 squares.