Unswop the pairs of numbers to bring back the magic


Unswop the pairs of numbers to bring back the magic

In squares of this type, containing a consecutive sequence 1 to ?, the magical expression to produce the constant is always (n3+n) divided by 2. So in our 4x4 square, the expression gives 64+4=68, 68/2=34 for the constant. The two pairs swopped over were 14 & 9, and 13 & 5. The original square was thus:


Please post all Puzzler enquiries and contributions to:

Jim Howson

5 Hilltop Gardens


Kent DA1 5JF

Return to the homepage>>

Email Alerts

Register now to receive ComputerWeekly.com IT-related news, guides and more, delivered to your inbox.
By submitting your personal information, you agree to receive emails regarding relevant products and special offers from TechTarget and its partners. You also agree that your personal information may be transferred and processed in the United States, and that you have read and agree to the Terms of Use and the Privacy Policy.

This was first published in October 2006


COMMENTS powered by Disqus  //  Commenting policy