Mahjong rule bookMinnesota‑great‑lakes‑coastal‑city‑community‑recreation‑centers‑in‑Duluth‑prioritize‑indoor‑mahjong‑social‑programming‑through‑cold‑snowy‑winter‑seasons‑because‑this‑engaging‑tile‑game‑gives‑local‑residents‑a‑great‑reason‑to‑gather‑indoors‑and‑socialize‑when‑harsh‑outdoor‑winter‑weather‑limits‑most‑other‑kinds‑of‑out‑of‑home‑leisure‑activity‑options.