One of the wonderful mathematical notebook videos from Vi Hart. This one contains a curious puzzle – can you identify Wau?

I first saw the Peter Sellers movie “Being There” in 1979, and fell in love with Johnny Mandel’s two piano pieces on the soundtrack. For years, pre Internet, I didn’t know what the pieces were. Although they sounded like classical piano music, they are not credited in the film, there is no soundtrack album, nor […]

David Millar, of the excellent puzzle site The Griddle, has launched a new collaborative puzzle site called Perplexible. The intent is to provide a forum for diverse puzzle authors to post new creations. I’ve posted an unusual Slitherlink there, and hope to post more unique puzzles, in the future. I occasionally get emails from puzzle […]