Solving the Super Fiendish sudoku from The Times on 13 Sept 2017

Simon discusses the different methods of notation that can be used for solving the most difficult Sudoku puzzles.

• #people_blogs
• #cracking_the_cryptic
• #crackingthecryptic
• #how_to_solve
• #super_fiendish
• #sudoku
• #simon_anthony
• #mark_goodliffe