(13 years ago) Very good ! Had to try 5 times, in 5 very different ways.
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EDIT, 26th Aug., 2022 - re-beaten, in MANY tries, just couldn't find it. Adding 5 stars! Would give 6, if possible. :)
I think there are more than six 2-offs, and I ''managed'' to find them all, hehehe. Really clever set up!