Section 2. Chaksu

Article 8. The prohibited Chaksu (Suicide rule)
  Suicide moves are not allowed. One can only play in completely surrounded territory in order immediately to capture a stone or group. (Figure 4-1, 4-2).

 

Figure4-1
Black may not
play at
the marked
place (x).
but Black
play at
A or B

 

 


 
Figure4-2
White may
play at the
positions
marked 1.