|PBase PROBLEM COLLECTIONS|
| PBase is our own problem reader.|
It allows you to attempt to solve tsumego, endgame and tesuji problems, indicating wrong as well as right solutions.
The problems come from classical collections, both the famous (e.g. Guanzipu and Gokyo Shumyo) and the not so famous (e.g. Katsugo Shinpyo and Yixuehui Hai.
You can also search for problems by entering approximate shapes.