Times Super Fiendish Su Doku Book 7: 200 Challenging Puzzles

I have been ordering these books in numerical order for several months for my husband. He does a few each day and seems to help his mental stimulation during the current situation of ongoing isolation. I will be ordering the next book in the series soon..

After very quickly solving super fiendish puzzles in another edition of mixed levels, I decided to purchase this specific book. I am finding these puzzles extremely difficult and struggling, which is very frustrating. In my opinion these are more than super fiendish.

Great. My food provider bought it for the she human who's my favourite knee. When she gets stuck into a super fiendish I can get a good half an hour uninterrupted naping.

Just as other books in the series.

Yet to start the book. Expect the challenge to be the same as the others in the series.