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Number Square 1
Put the numbers in their places in this deceptively-tough Logic Puzzle.
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March 15, 2004starEmail Puzzle
A Number Square is a 3x3 arrangement with a different number 1-9 in each cell. For example, a Number Square could be:

   123
   987
   465

Given the clues below, can you determine the composition of Number Square 1?

  1. The three numbers in the upper-left to lower-right diagonal sum to 24.
  2. The four numbers in the corner cells of the square add to 24.
  3. The three digits in the lower-left to upper-right diagonal sum to 14.
  4. Adding the three bottom-row numbers equals 18.
  5. Summing the three digits in the rightmost column gives 16.
  6. The number in the middle cell of the leftmost column isn't 2.

Logic Problem Instructions


  • Puzzle Goal

    Given the information in the Logic Problem introduction and clues, solve for the unique answer as instructed in the individual puzzle description. Logic Problems are currently print-only puzzles; click on the Printable Logic Problem tab to get a banner-free version for more economical printing.

    Note that a crosshatch solving grid will not be useful in solving most of the Logic Problems. The category/line method is generally more useful.

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