• Hans Peter
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    Very nice effect! Thank you.
    January 15, 2013, 4:29 pm
  • tsir1962
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    Too many solutions, no symmetry involved, a lot of guesswork.
    March 3, 2016, 2:12 pm
  • Laurelin323
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    The middle is perfect, but I can't get the corners right.
    November 3, 2017, 11:46 am
  • Alev
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    All the corners but the bottom left one are black.
    May 14, 2018, 2:56 pm
  • russs
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    Not logical.
    November 12, 2018, 11:05 pm
  • robaharrison
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    Shite.
    April 5, 2019, 12:03 pm
  • littlebitocd
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    The two in column 13 is the center of the spiral that moves outward counterclockwise. make single pixel diagonals to move from one large number to the next. for the corners, keep the same spacing of the diagonals from the center.
    October 12, 2019, 6:41 pm
  • Damask_
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    Thank you for the tip.
    November 28, 2019, 1:22 am