digraph Syzygy {
  KBvKP -> KQvKB;
  KBvKP -> KRvKB;
  KBvKP -> KBvKB;
  KBvKP -> KPvK;
  KBvKP -> KBvKN;
  KBvKP -> KBvK;
  KBvKN -> KNvK;
  KBvKN -> KBvK;
  KPvK -> KQvK;
  KPvK -> KRvK;
  KPvK -> KBvK;
  KPvK -> KNvK;
  KBvKB -> KBvK;
  KRvKB -> KBvK;
  KRvKB -> KRvK;
  KQvKB -> KBvK;
  KQvKB -> KQvK;
}