Solution code: Row 1, followed by column 4.
on 22. April 2022, 11:45 by Nick Smirnov
Penpa:
https://tinyurl.com/y3j3vjul
on 13. September 2014, 12:07 by CHalb
Richard, that's once again a very fine construction; thanks.
on 25. July 2014, 13:41 by flaemmchen
Toll!!
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