digraph Syzygy {
  KBNvKQ -> KBNvK;
  KBNvKQ -> KQvKN;
  KBNvKQ -> KQvKB;
  KQvKB -> KBvK;
  KQvKB -> KQvK;
  KQvKN -> KNvK;
  KQvKN -> KQvK;
  KBNvK -> KNvK;
  KBNvK -> KBvK;
}