Black Hole
May contain traces of nut
You got lucky and picked the right one 
Puzzle Corner
- Thread starter Ezra Pound
- Start date
EEPhil
Number 28
Even picking prpr's "only" inference, I needed a second one! That was my first choice, which needed two more.
Anyway, I still don't think inferences make it difficult. If you hadn't posted that it was difficult, I'd have said it was easy!
F1 seemed to require two more. A4, for me, also required F1
Black Hole
May contain traces of nut
Did I say it was difficult? Kurosus are not difficult, just some are more difficult than others (and never in accordance with their star rating).
EEPhil
Number 28
Implied by the use of "!". (?)
No, they're not difficult. The i-newspaper's "binary" is similar, but 10x10 0s and 1s is more challenging - requiring inferences every time. They don't give them a star rating.
The i's Futoshiki puzzles are too easy.
prpr
Well-Known Member
I'm outraged...