双炮禁双炮

《蕉竹斋象棋谱》：七十五局古谱残局

19 手

双炮禁双炮 — "Two Cannons Pin Two Cannons" Problem 24 of 蕉竹斋象棋谱. Transcribed from http://www.dpxq.com/hldcg/search/view_u_42741.html