The realization with flight-taking first moves and three solutions is not quite conventional, but the fascinating conception deserves this special prize. No.1 by Aaron Hirschenson. Excellently constructed half-pin based matrix, but inferior to the second prize. No.3 by Aaron Hirschenson. Again a half-pin based matrix.
Double threat is a small flaw.
No.2 by Aaron Hirschenson. Harmonious and economical, but both tries are defeated by the same BK move. Again half-pin matrix, unfortunately with cruel refutations. Good, but not quite thematic since white knight mates from different departure squares.