I recently made a complete PDF (ebook) version of the Guanzi Pu -- a classic Chinese problem collection from 1660 -- and could not find such a version on western websites, so thought I would share here for anyone interested. It includes all 1473-problems (plus a few extras) and answers. You can use it on your ebook reader, PC, or other portable device you may have. Hope it's useful.
Sensei's Library wrote:Guanzi Pu (官子谱 Hanyu Pinyin: guānzǐpǔ) is a large classic Chinese problem collection (1473 problems) in circulation from the sixteenth century onwards. First author/editor Guo Bailing. Published in 1660; again edited and published 1689 by Tao Shiyu.
The name implies endgame problems, and the collection has many examples of a relatively unusual type of question: not orthodox life and death, but ways to attack a group that can live with best play, but at the cost of points to the defender. The collection expanded to include many types of problems - effectively any way of exploiting bad shape.