Variant endings (i.e. explosions, 3 checks) don't count.
http://en.lichess.org/2FaY02io/white (standard)
http://en.lichess.org/qsXe0E21/black (more interesting, can be shortened to 3 moves)
http://en.lichess.org/2FaY02io/white (standard)
http://en.lichess.org/qsXe0E21/black (more interesting, can be shortened to 3 moves)