When I was around 19 and messing around with Visual Basic 5, I made a Sudoku solver. I thought up an algorithm myself, coded it, and it worked. I was very proud

When I was around 19 and messing around with Visual Basic 5, I made a Sudoku solver. I thought up an algorithm myself, coded it, and it worked. I was very proud of myself. Seeing how succinct this SQL solver is now, I am in awe.