Another computer player problem it seems.
Reducing PLUG_THE_HOLE_METRIC by a tad.
The problem computer game was played with this, epsilon=0.
Adding a computer-played game which is suboptimal. May diagnose.
Tweaking qSearchBreadth and epsilon again.
Bumping up the number of layers to clear on level 2.
Fixing a major bug where good moves were being accidentally removed.
Reverting to an easier level.
Adjusting epsilon and qSearchBreadth.
Adding a 4x3 level w/ only 5-er blocks that fit.
