PUZZLES = blackbox bridges cube dominosa fifteen filling flip galaxies guess \
inertia keen lightup loopy map mines net netslide pattern pegs \
- rect samegame sixteen slant solo tents twiddle unequal untangle
+ rect samegame sixteen slant solo tents towers twiddle unequal \
+ untangle
BASE = $(patsubst %,%-base.png,$(PUZZLES))
WEB = $(patsubst %,%-web.png,$(PUZZLES))