40. Decisions from the Ninefold Height
Elegant Pastime Manual, Vol. 1: 92 classical compositions
11 moves
决策九重 — "Decisions from the Ninefold Height" Problem 40 of 適情雅趣, volume 1 (卷一). Transcribed from http://www.dpxq.com/hldcg/search/view_u_42848.html