Enclosed Territory Invasions
Heh, to add a bit to SL, I'm putting up some examples of invasions of enclosed territory.
This shape may look a bit big, but it is very easy to defend! You might think that the 3 - 3 point is vulnerable, but the walls on both sides protect the corner from being taken.
Here are some examples of invasions.
LukeNine45: I think your wall is far enough away that the tripod group will live, so I think
might be wrong:
LukeNine45 (later): Hmm, seems it dies with this sequence:
LukeNine45: Hmmm, no-- Perhaps this ko?
No way should this 3-3 invasion live. B need not play the usual move; with so much influence, is in no danger.
is often a good start if the plan is to kill. B crawls on the second line, but W isn't getting any eyes this way.
The 2nd shape comes from a question that I've asked myself over and over again, how much space can a side wall of territory have before it's vulnerable.
So far, a depth of 5 points is what I've seem to believe as the deepest it can go without being vulnerable at all. Although, with such a huge space, a small mistake could cost you a big bite in territory. Here is an example of a failed invasion and a successful invasion.
A natural invasion would be 3-3, but I might post a 2-2 or 2-3 invasion example later. I don't know if "2" is the best defense, though, I'd like comments on that.
PetriP? No it is not. circle point for instance makes better use of the huge wall. 2 is just way too close to wall to do any real work.
2 I've found is the best move for the situation.
8 Makes the invasion unsuccesful, but let's see a variation of the same foundation of moves. Even if 7 was played at 8, white could have played a hane at 7.
The 7 lets Black the breathing space to make 2 eyes. White's 8 is just an attempt to stop black from stealing any more.
Two eyes, and this huge success means the opponent's eye on the other corner. w25 points taken aay{20 points for all the new stones in ur territory, 2 points of territory, and 3 points for the prisoners}. Although, you should have learned your lesson and defend correctly this time.