Done, no green.

Difficulty score 15. No green.

Done

Start

done,ng

Done

Did it.

start

go

done

ding

start

This shouldn't be called Iron Sudoku any more - nothing hard about it for quite a long time.

go

done, no greens

go

dbg

dng*

Go!

Done.

done

Go

Done no greens

go

done

wahoo finally an expert! better do a few more to keep it up!

Are you doing puzzles from the archives, pandabear?

I sure am

EZPZ. Kind of interesting.

done

go