Sound · Waning Moon, Fallen Blossom

What the solver found: an exact audit of the classical manuals

11 moves

Waning Moon, Fallen Blossom (月缺花残) — Lin Youru: collected compositions (林幼如作品集, 20th c.), no. 4 The book claims mate in 6 by continuous checks. Exhaustive search agrees: one key, no second solution after any defence, and nothing faster. The mainline is the book’s solution; a br…