(a month ago) All I find, is two offs. I have about 7 of them, by now. :O Will keep searching. Need to learn this! Thanks for a great ''poligon''!
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EDIT 2023, 5th Jan. - I can't believe I got it. Very surprising, what is the fastest.
(16 days ago) Exactly the same as yokosooo: can get to 238, but can't see anything shorter, atm. Will be back! :)
Great puzzle!
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EDIT 1, 2022, 31st Dec, I have now found dgriff's 210. Not sure how to cut 6 more. Will keep looking.
EDIT2: Got it! This was really enjoyable to search for. And very well hidden, too!