• biker_bob
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    Too tough for me. Could hardly get started really :o(
    February 11, 2015, 9:20 pm
  • Joe Tramp
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    It seemed quite logical. Nevertheless, I do not understand the image...

    SPOILER:
    Left-most "2" is in rows R17-R18, the right-most is in the corner (R24-R25)
    February 12, 2015, 1:51 pm
  • kika_1
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    Should this be the "Tatlin's Tower"???
    February 12, 2015, 6:23 pm
  • kokikak
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    A lot of guess work

    Another hint:

    R5, R6, are black.
    February 14, 2015, 9:33 pm
  • JoergWausW
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    Valid solution, but invalid - no fun.
    February 17, 2015, 10:42 pm
  • LeraDraco69
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    That was pretty rough. Couldn't do it without your hints, Joe Tramp. I don't know what this is either.
    July 5, 2015, 9:08 am
  • biglib007
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    Tough but possible to get done without hints.
    August 26, 2017, 3:21 pm
  • owlsowls
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    Oh yes - thanks to Kika - googled it, and the title makes sense.
    August 26, 2018, 2:23 pm
  • littlebitocd
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    C17 r15-16 was the test that unlocked it for me. There's still one 50/50 guess, but the right answer completes a line.
    September 16, 2018, 4:00 am