Placement
A placement is a play inside the opponent's group, mostly on a vital point.
A placement is understood as disconnected from one's existing stones from one's group; to succeed it should be difficult to defend against. (It's more of a tesuji than a speculative invasion.)
Example:
After the placement at , Black can connect out, either at a or at b.
--Dieter
See Nakade and Vital Point.
Here's an example of a placement in a life-and-death situation:
beginner:(22K) i disagree with --Bob McGuigan
because white can play like in the next game
MrTenuki: Thanks to
, the white group is definitely alive now.
should be played at
, as you have already shown in the diagram below.
MrTenuki:
at a makes the second eye false and kills the entire group.
beginner:now white got 2 eyes for sure no mater where black play next the only way black can really kill white here is in the next example
MrTenuki: You might want to take a look at the following pages: L group, L+1 group, L+2 group.
beginner(22K) tnx for the (a) in the before last example i didnt notice it. so as long as black in the (b)or (c) point in his secand stone the white group in dead