[Retros] New retro-like puzzle

[Mark Tilford]

I had the following idea a few months ago:

You are given a list of moves in order, but are only told what kind of
piece moved (Human, Animal, or Pawn), and what kind of piece was
captured, if there was a capture.  (Kings, Queens, and Bishops are
humans; Rooks and Knights are animals; Pawns are pawns.)  Checks may
be indicated depending on the problem; there is currently no
convention for how to list castling.  The goal is usually to work out
the final position, and sometimes to work out the exact move list.

There have been a handful of puzzles released on The Grey Labyrinth:
http://www.greylabyrinth.com/discussion/viewtopic.php?t=11609