Yi Kuo

Yi Kuo (弈括) is a classical kifu and tsumego book written by Huang Longshi, posthumously published in 1710.

The book is divided into two sections. The first containing thirty self-composed (from the opening to middle game), and the second 361-tsumegos (representing the number of points on a go board).

The Yi Kuo is available in PDF and SGF formats on Go Magic in the free final lesson "Treasure Chest" — Huang Longshi: Legend of Blood and Tears and available in interactive format at Tsumego Hero.