Looks like a
childreni to me. Hard to tell if it is a pure or not. I had the same question with mine and it seems fairly impossible to get a definitive answer. All the ones i have seen that are supposed to be pure
childreni had a fairly distinct line running down the sides for approx the first third of their body. Can't really tell if it is evident on your snake, or if that is even a "true" indication of a
childreni or not, i am by no means an expert, i do know however that macs do not have that line down them and their markings/spots are alot bolder in appearance. Maybe someone with more experience could clarify that. Just my 2 cents worth.
Either way, nice snake and i love that second photo, looks very evil.