• margpheb
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    Too many possibilities on this. After six valid possibilities I gave up.
    February 14, 2014, 11:48 pm
  • Sparrow
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    Spoiler:

    Diagonally symmetrical.
    R1: 2,4,8,10
    C1: 2,4,6,8,10.
    February 15, 2014, 11:29 am
  • margpheb
    Translate Original Version
    The spoiler helped-Thanks.
    February 15, 2014, 2:19 pm