Since the vast majority of recent problems are how to hack Cody, here's another one, with an even more malformed test suite than the original singularity.
Good luck hacking this one.
One interesting spin is: can you solve this problem using a freepass?
OK.
It will, but will the freepass work again if I rescore the solution? :-)
Find the numeric mean of the prime numbers in a matrix.
5620 Solvers
493 Solvers
132 Solvers
Determine if a Given Number is a Triangle Number
276 Solvers
97 Solvers