Play Magnus in 3 moves.
Play Magnus vs Houdini 4

Play Magnus is Houdini with the extra constraint of trying coming up with the type of blunders magnus would do

The "Play Magnus" app engine is by Tord Romstad, of Stockfish fame. It's based on Glaurung, a precursor of Stockfish. Look here:
https://chessprogramming.wikispaces.com/Play+Magnus
We shouldn't expect it to be as strong as Houdini - or Stockfish.
Who would win in a match between those two?