• micropat
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    Now I remember what sudoku is.
    December 1, 2015, 3:13 am
  • suvvern
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    Great fun and completely logical.
    December 2, 2015, 2:19 am
  • Gudi
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    I love these :)
    January 7, 2016, 12:19 am
  • mich61
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    Cheers.
    February 11, 2017, 6:27 pm
  • mystifier
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    Cool combination. I would be interested how fast I could solve one of these now that I know the concept.
    February 23, 2020, 4:33 pm