...1 8 13 12 14 4 16 15 This skeletal magic square problem has been sent in by Chelmsford reader IvorSmith. Each of the four columns, each of the four rows, and each of the two long diagonals sums to a constant of 34. Your...
http://www.computerweekly.com/236489.htm
...row central box now has two valid values, it becomes clear that x must be 117 and everything falls into place. IvorSmith will receive £20 for this contribution. puzzler Related Tags hand box algebraic method suitable algebraic...
http://www.computerweekly.com/Articles/2008/08/14/231714/Puzzler.htm