Setter is Derek Neal

Derek Neal has produced many hard classics for the channel. His first feature on CTC is Hidden Triple.

Selecting a sudoku title will allow you to play it, selecting Simon or Mark image next to the title will allow you to watch it.

  • Hydra Sudoku Mark
  • Beyond Diabolical Simon
  • The Stinger Simon
  • Celebrating 50k Subs Mark
  • Diabolical Excalibur! Simon
  • Diabolical Simple Trick Simon
  • Hidden Triple Simon