katapliksi: imho in problems where there is clean kill/life, the description of the problem shouldn't say "No Ko", but rather label the ko kill/life as wrong and just say in the description just black/white to play. That way, it's closer to an actual game.
caranthir: In easy collections such as this one, it's commonplace to give the "no ko" hint where applicable.
In easy collections such as this one, it's commonplace to give the "no ko" hint where applicable.