By Mateusz Surma, engl., 260 problems.
The author Mateusz Surma is a European Go professional and has published an eight-volume problem book series for players from 20th to 3rd Kyu to which this title belongs.
This volume covers 260 problems for players from 12th to 14th kyu, but then for training purposes well used by players of other skill levels. Five degrees stronger or weaker players can also access without hesitation.