I like the idea of the game to have this AI moving with very limited possibility to influence, which makes it a nice mix of puzzle and sneaking / covert-ops type games.
The controls however did not 100% work for me, I had lags on the spacebar sometimes; and also noticed that when I keep holding the spacebar down, I get through the levels even if I would have been caught by the guards ;)
If you also explain a bit more how the AI works, the player feels more in control (even if the movement is still based on probabilities).