**List of the site's news added April 2nd, 2007**

**
April 2002
- April 2007: 5th anniversary of multimagie.com **

Many thanks to Harvey Heinz, Walter Trump, Peter Bartsch, for their great help on the English and German versions!

**FIRST PROBLEM SOLVED**(problem #4) on the 10 open problems of the*Mathematical Intelligencer*paper:- first known bimagic square of primes, and its order is also prime!

- On open problem #5:
- first known 9x9 magic square of cubes. It is now the SMALLEST known magic square of cubes
- first known 10x10 and 11x11 magic square of cubes
- there is no 3x3
semi-magic square of cubes using distinct numbers < 300,000
^{3}. Computed by Frank Rubin, USA. - On open problems #1 and #2:
- new page on the latest research on the 3x3 magic square of squares problem, including recent results from Ajai Choudhry, India, Lee Morgenstern, USA, Lucien Pech, France, Randall Rathbun, USA, Jean-Claude Rosa, France
- On open problem #3:
- there is no 5x5 associative bimagic square using distinct numbers < 600,000. Computed by Lee Morgenstern, USA.

- There are 363,949 trimagic series for cubes of order 9, computed by Gildas Guillemot, France.
- First known trimagic square of order 48, by Chen Qinwu, China. The known trimagic squares are scarce: orders 12, 16, 32, 48(the new!), 64, 81,...
- Another bimagic square of order 10
- Thanks to John Brillhart, USA, to have (aleas unsuccessfully) searched in his archives the D.N. Lehmer's lost paper on bimagic squares
- Older but interesting results:
- In 2003, Duncan Moore, England, did not find any Taxicab(5, 3, 3) number < 1.7 * 10^21. Conclusion here: we do not know how to construct a 9x9 semi-magic square of 5th powers using the Morgenstern's method.
- 50 years ago, Ronald Edwards, USA, published a very astonishing 4x4 multiplicative magic square, staying multiplicative magic when its numbers are written backward!
- Site of Lee Morgenstern, USA, added in the links

- ??!!?? REMINDER of some of the most wanted problems on "small" objects, extracted from the updated Problems page. Is it possible to construct, using distinct integers:
- a 3x3 magic square of squares?
- a 4x4 magic square of cubes? or 5x5, 6x6, 7x7, 8x8? (using distinct positive integers)
- a 5x5 bimagic square?
- a ?x?x? multiplicative magic cube using distinct integers < 416?

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