MonoMonday: Soft/Hard

I'm indebted to my Editor (as is often the case) for this blip idea for Pinkhairedlady's blip challenge this week.

She was doing trying to do this Sudoku which is supposed to take 11 minutes. After much longer than that she decided that it was actually rather hard. She thought maybe a soft pencil might help - and managed to find a 6B pencil for the photo!