• tsir1962
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    Lucky guess!!! The 'A" is not 'A'. Try top left and bottom right to start with a 2x2 square.
    January 15, 2016, 10:50 am
  • micropat
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    Doesn't seem logical, though it's guessable. The 2x2 square mentioned by Tsir leaves one blank space to the side, but they're flush with the top and bottom.
    January 15, 2016, 1:57 pm
  • schwartz02
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    I've had 2 incorrect answers now...I am stumped!
    January 15, 2016, 9:15 pm
  • Alev
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    Middle blocks start at top left and finish at bottom right.
    August 10, 2019, 5:32 pm