List of the site's news added April 6, 2010

• NEW PRIZES! €8,000 (currently ≈ $10,000)
  What are the smallest possible magic squares? Twelve enigmas for winning €8,000 and twelve bottles of champagne!
  Look at the details in the press release (PDF file).
  Thanks to Al Zimmermann, author of famous contests www.azspcs.net and http://recmath.com/contest/archives.php, for his checking of the English version of this press release.

• There is no 5x5 magic square of cubes with S3 < 20,000,000
• Lee Morgenstern's method for finding 3x3 nearly-magic squares of squares used by Frank Rubin in 2009, now revealed!
• Randall Rathbun worked on the enigma #1, but unfortunately... no new example of 3x3 magic square having 7 squared entries
• A. Donald Keedwell kindly sent me his photo, now added at the beginning of the table on additive-multiplicative magic squares. This photo can be zoomed, by clicking on it.
• About Walter W. Horner, the first author in 1952 of additive-multiplicative magic squares: his more recent paper that I have been able to found was published in 1973, in The Fibonacci Quarterly. Any biographical information on this American teacher of mathematics of Pittsburgh will be welcome.
• The interesting paper of Michael P. Cohen on 5x5 bimagic squares, of which the draft was already mentioned, has been published in the Journal of Recreational Mathematics.

Return to the home page http://www.multimagie.com