Number Square 2
Putting the numbers 0-15 into a 4x4 square adds up to a Challenger Logic Puzzle.
Copyright © 2002-2014 All-Star Puzzles
All rights reserved
A Number Square is a 4x4 arrangement with a different number 0-15 in each cell. For example, a Number Square could be:

    1 12  3  2
    9  8 13  7
    4 15  0 11
   10 14  6  5

Given the clues below, can you determine the composition of Number Square 2?

  1. On the upper-left to lower-right diagonal, the upper left number minus the number next to it down the diagonal equals 14; the lower right number on the upper-left to lower-right diagonal minus the number next to it up the diagonal also equals 14.
  2. The entry in col. 2, row 3 minus the number in col. 1, row 3 equals 7.
  3. The number in col. 1, row 3 minus the value in col. 1 row 4 gives 1.
  4. The four numbers down the leftmost column of the square add to 34.
  5. The sum of the four numbers in row 3 of Number Square 2 equals 24.
  6. Adding the four bottom-row numbers equals 37.
  7. Subtracting the number in col. 2, row 4 from the number in col. 3, row 4 leaves 1.
  8. The number in col. 3, row 1 less the number in col. 4, row 1 equals 4.
  9. Taking the entry in col. 4, row 2 from the value in col. 2, row 1 gives 5.