  Contextuality and nonlocality are two fundamental properties of nature.
Hardy's proof is considered the simplest proof of nonlocality and can also be
seen as a particular violation of the simplest Bell inequality. A fundamental
question is: Which is the simplest proof of contextuality? We show that there
is a Hardy-like proof of contextuality that can also be seen as a particular
violation of the simplest noncontextuality inequality. Interestingly, this new
proof connects this inequality with the proof of the Kochen-Specker theorem,
providing the missing link between these two fundamental results, and can be
extended to an arbitrary odd number $n$ of settings, an extension that can be
seen as a particular violation of the $n$-cycle inequality.
