ElyGo Pro (Go, Tsumego)

ElyGo is a complete Go game app (Igo, Baduk, Weiqi) for enthusiasts. A free version is available here : http://goo.gl/wynXit Features : - A database of 20,000 Pro games - More than 500 Tsumego problems with answers as well as bad variations - Play and observe games online on IGS - Import your own tsumego problems - Import your own game database - SGF Editor to review and edit games - Play against the computer (GnuGo 3.8) - Loads Kogos Joseki Dictionary - Pattern search - Choose your color in problems (black, white, or random) and change several other settings (almost anything is configurable) ...