It's a joke. It's hardly doable by a single person. For the record there is currently no fully C++11 compliant compiler.
Oh, and I'd like to say that knowing everything about C++11 makes you a language lawyer, not a Grandmaster. Grandmaster is more than knowing the language. It's about using it right.
Oh, and I'd like to say that knowing everything about C++11 makes you a language lawyer, not a Grandmaster. Grandmaster is more than knowing the language. It's about using it right.