Second key · Li Jing Scouts the Camp

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

11 moves

Li Jing Scouts the Camp (李靖探营) — Deep as the Sea (渊深海阔, 1808), no. 126 The book opens Rxf10+ and mates in 6. So does Rb10+: the key is not unique. The mainline is the book’s solution; a branch, where there is one, is what the solver found. Record from dpxq.com.