I am not far into this yet, so haven't looked at any posts on here, but have hit a contradiction in my working out. I've back-tracked and can't see a flaw in the logic so I'd just like to confirm one or two things if I may.
Is D = 68 and P = 17, and are the 2nd-4th digits of 15a in the grid = 425?
If any of these is wrong, could you please just indicate which one(s) but not tell me what the correct answer should be?
Thanks