In "Igofu" written by MA Rong in the Later Han, while sugoroku game was described as a speculative and superficial gamble, Igo was described as a strategic and intellectual game.
後漢の馬融の『囲棊賦』などで「博」（スゴロク）は投機的で浅薄な賭事であるに対して囲碁は頭脳を使い戦略的・理知的であるとしている。