Go Master 2017

A joint product for learning board game go, by Go Eye author and BestGo Institute.
A free, simple, and elegant go problem library app targeting at each level of go learners, with problems ranging from 40k to 9d. The problems include all stages of a go game, including opening, middle game, and end games.
It is the first go learning app that encourages proactive learning. It provides comprehensive explanations to each problem with correct solution, wrong solution, variations, as well as comments. With handy note taking tools, you can document your thoughts in each problem.
The problems are shared from BestGo's yearly accumulated teaching materials and the library is growing continuously.