I've turned comments off on this blog as I'm getting quite a lot of spam. I've been able to keep on posting on flickr but haven't the time and energy to manage to be an active blogger. Sorry not to have been visiting your blogs.
My best wishes to you all!
Update: Comments are back on and I'm back!
Sphinx Cryptarithm #28
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From Sphinx Magazine #157, September 1933 ABCB, BCAD and CBAD are squares.
The puzzle is credited to “C. A. Rupp (from American Mathematical
Monthly)”. [sp...

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