digraph Syzygy {
  KQBvKQ -> KQvKB;
  KQBvKQ -> KQBvK;
  KQBvKQ -> KQvKQ;
  KQvKQ -> KQvK;
  KQBvK -> KBvK;
  KQBvK -> KQvK;
  KQvKB -> KBvK;
  KQvKB -> KQvK;
}