digraph Syzygy {
  KNPvK -> KQNvK;
  KNPvK -> KRNvK;
  KNPvK -> KBNvK;
  KNPvK -> KNNvK;
  KNPvK -> KPvK;
  KNPvK -> KNvK;
  KPvK -> KQvK;
  KPvK -> KRvK;
  KPvK -> KBvK;
  KPvK -> KNvK;
  KNNvK -> KNvK;
  KBNvK -> KNvK;
  KBNvK -> KBvK;
  KRNvK -> KNvK;
  KRNvK -> KRvK;
  KQNvK -> KNvK;
  KQNvK -> KQvK;
}