strange, solved by two hidden pairs. It feels like i made the lucky guess mistake

dng

but no, checked again, this is not an expert, but a medium hard

done

Done with 1 careless restart

Got it on the second guess.

Done.

dang, i has screwed it up

back to checkpoint

crap

my checkpoint itself is wrong

take a break hurshy :)

stay awake

for safety's sake

mistakes you will make...

when you don't take a break ;)

go

done

Difficulty score 53. No green. Mr. O is almost right. Just one very simple (and short) forcing chain breaks it wide open.

Go

Done with greens

DWG & 2 GUESSES

done.

No greens. One lucky guess.