digraph Syzygy { KQPvK -> KQQvK; KQPvK -> KPvK; KQPvK -> KQRvK; KQPvK -> KQBvK; KQPvK -> KQNvK; KQPvK -> KQvK; KQNvK -> KNvK; KQNvK -> KQvK; KQBvK -> KBvK; KQBvK -> KQvK; KQRvK -> KRvK; KQRvK -> KQvK; KPvK -> KQvK; KPvK -> KRvK; KPvK -> KBvK; KPvK -> KNvK; KQQvK -> KQvK; }