Go

start

aargh, made a mistake start again later

Done with greens between fights

Done

Difficulty score 45.

Conquered it finally

Start

done with greens

Done

heh... looks like this one is going to be a bit of a beast, judging by the comments below... start

Gah! nearly there, but getting stuck...

done! no guessing, but definitely used greens

done, ng

18 filled in and slowing down

go

Eighteen filled in and stopped DEAD. Going to greens.

Done. Used greens *and* guesses. There is clearly some technique used in today's sudoku that I haven't been able to puzzle out.

finished ... fun puzzle

go

18. Stuck. Going green.

19.

Done, with greens, one lucky guess and one tentative pair chain.