Master of Go is a huge collection of the ‘life and death’ problems of Go game. – Now, 1052 problems are ready to be played. – Languages : English, Chinese, Japanese, Korean – 4 Levels of problems, so you can choose proper level for you. – 1point hint – Self review is possible. – You can mark favorite problems in order to solve them again in the future.How to play : – Put stones : Just touch where you want to put it on. – 1point hint : Hint appears on the screen for a second. – Self review : You can put white and black stone alternately for review. – Mark Favorite : Touch the star mark on the bottom left of the screen. You can see yellow star marks on the Question list. (In addition to the problem-solving ways provided, there can be another ways.)