GO PRACTICE · 30
From one liberty to two eyes.
30 beginner exercises with a daily problem and step-by-step counterplay demonstrations. The practice interface is Chinese; daily problems use China time.
Rules & objective
Black plays first. Orthogonally connected stones share liberties. Groups with no liberties are captured. Suicide and repetition of any previous board position are forbidden. Two consecutive passes open manual dead-group confirmation; return to play when life and death remain unsettled. Area scoring counts living stones plus surrounded empty points. White receives 7.5 komi; captures are not added a second time.
Controls
Chinese in-game controls. Tap an intersection and release to place. Arrow keys select, Enter places, F toggles fullscreen. Whole-turn undo, sound toggle, auto resume and SGF export are available. New game offers 9, 13 or 19 lines, three casual AI policies and either colour.
Worked example
Taking a group’s last liberty removes every stone in the group. Recapturing into a previous board position is forbidden by positional superko.
A local casual strategy engine without a certified rank. Dead groups are confirmed manually.