I'm not sure what the submitter implies by "Project Euler meets Brainfck". While some "fun" problems on SPOJ involve coding exclusively in esoteric languages such as BF and Whitespace, most others are the standard algorithmic challenges. This site is pretty well-known in the programming contest community.
That, and the title is typo'd.
Hence my italicization in the grandparent comment.
"Project Euler meets Brainf*ck" is a pretty terrible description. It looks like a website with programming problems to solve, similar to Project Euler, but with less of a direct emphasis on math.
It also looks like you submit your source and the site operators test it, and there are time limits.