29. Four Greybeards Retire to Mount Shang

Hundred Variations Manual: 67 classical compositions

16 moves

四皓隐商山 — "Four Greybeards Retire to Mount Shang" Problem 29 of 百变神妙象棋谱, volume 1 (百变象棋谱（全70局）). Transcribed from http://www.dpxq.com/hldcg/search/view_u_282425.html