The November 2007 update of www.multimagie.com/indexengl.htm is now online, with a lot of news. Including details on solutions briefly announced through [math-fun]: -the Wroblewski-Pfoertner's squares, one of them solving the Open problem #6 published in The Mathematical Intelligencer in 2005. A direct access to their squares: www.multimagie.com/English/WroblewskiPfoertner42&44.htm -solution E 496 published in the October 2007 issue of The American Mathematical Monthly (but more detailed in my site). A direct access to the PDF file: www.multimagie.com/SmallestTriangularExpanded.pdf They published the problem 66 years ago. As they title: "Better late than never!"... Christian.