설명

== Features == * 50+ decks of tsumego A lot of decks separated by topics, authors and levels. Worth to try them all! * 10000+ tsumego ​Almost endless content to study and solve. * No "click-through" conception You should solve tasks by paper and pen, not by clicking the board. It improves your ability to read problems in real game. * Dark mode It changes the theme to the Dark mode. Better to use in dark places and rooms.