A big thank you to those who have taken our subscriber numbers over 15,000. Mark uses some skills to show how to solve a viewer's 'expertlevel' puzzle request. #experttips

We would be very grateful to anyone who might be in a position to sponsor us on Patreon. Our link is:

  / crackingthecryptic  

If you have a puzzle you'd like us to consider solving on the channel, please email us at:

[email protected]

#Sudoku
#crypticcracking