Sudoku Challenge: Can You Get One Number In Under 20 Minutes?!

We take a look at an 8/10 difficulty puzzle from www.dailykillersudoku on 3 Dec 18. This puzzle is insanely hard and it took Simon 20 minutes to place one number!! We would love to hear from you if you have an elegant way into this puzzle.

Видео Sudoku Challenge: Can You Get One Number In Under 20 Minutes?! канала Cracking The Cryptic