Sudoku is a fun puzzle that tests your logical deduction skills. Using the method taught in this video, you will able to solve a user-created sudoku grid in under a minute. His record is 47 seconds.

Stephen performs this in his adult cabaret shows and cruise-ship lectures on puzzle history. While the two performances are both cabaret stage shows, he also does it close-up on an A5 sheet. It can also be done impromptu once you know the formula, by quickly sketching out a grid on a piece of paper.

The audience get to choose where to place the base numbers and Stephen solves the grid around them.

Running Time: 33 minutes