Puzzle (2014) is a slasher torture porn from Japan.  A schoolboy tortures a pregnant school teacher and causes her to lose her baby, then threatens to bomb some classmates, unless the town succeeds in solving the puzzles he designed.  The problem with this movie is that there are just too many things that are unexplained.  The movie chooses to spend time on the torture scenes, or waste time on admiring a pet lizard, instead of exploring why everyone did what they did.  A large part of the video lacks contrast and is washed out.  I also find the music to be annoying for my taste.  Based on my criteria I can only regard this movie as trash.