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A Halloween Puzzle I found!

  1. Oct 20, 2013 #1
    I found this little puzzle on Reddit a couple minutes ago: Puzzle Here

    I worked out the first half, but need to try the second part of "How fast a monster can we out run?".

    It's an entertaining puzzle, if you'd like to give it a try, don't scroll down, it gives the solutions!
  2. jcsd
  3. Oct 21, 2013 #2


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    2017 Award

    Staff: Mentor

    Bonus question: what happens with two monsters, starting on opposite sides of the lake?
    I think the best solution is better than the trivial lower bound on the maximal monster speed, but the ideal monster patterns get complicated.
  4. Nov 1, 2013 #3
    or you could be a particle and not let the monster know both where you are and how fast you are going thus making it impossible for him to catch you
  5. Jul 26, 2014 #4

    I'd like to see the answer to this bonus question. This is an impossible situation and I think the escape plan is difficult.
  6. Jul 26, 2014 #5


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    Gold Member

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