Done

go

done. no greens

Start.. Hello massmo

done, with greens.

Whoopie. Done with a green

go

Done

start

done ng

go

Took awhile but no greens - lots of hidden pairs

Or maybe they were naked pairs - without greens it's not so obvious. Lots of pairs, anyway.

Or maybe they were naked pairs - without greens it's not so obvious. Lots of pairs, anyway.

Go

Done with greens

go

done

done, ng

commence

terminate.. no greens

my solving approach led me to a hidden unique rectangle

Difficulty score 36. No green.

done

go