Bulgarian, now American IM Nikolay Minev turned 80 yesterday (sorry to be slightly late), and as someone who long enjoyed his column on tactics for (the sadly now-defunct) Inside Chess, I'm happy to wish him a happy birthday. Thanks to a short article on him in Chess Today, I learned that he was not only a very accomplished player and chess author, which was evident in any case, but that he was a medical doctor who in 1965 created the Bulgarian national toxicology lab in Sofia. Impresive!
Much more Minev, here - the site is most definitely worth a long browse.