entropi wrote:...
I would play such kind of a move (or a strange looking invasion, strange attacks, etc) in a game where I am way behind, in order to complicate the game. But playing a move that I dont understand right from the start... I don't know, it's not my understanding of the game.
But again, maybe it's just me who doesn't understand it

One way to try to understand it is to think of sequences that might arise from it.
Here are some examples:
$$Wc
$$ -------------------+
$$ . . . . . . . . . . |
$$ . . . . 8 . 3 . . . |
$$ 0 . 6 4 1 9 . . . . |
$$ , . 7 5 . . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . 2 . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . , . . . |
- Click Here To Show Diagram Code
[go]$$Wc
$$ -------------------+
$$ . . . . . . . . . . |
$$ . . . . 8 . 3 . . . |
$$ 0 . 6 4 1 9 . . . . |
$$ , . 7 5 . . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . 2 . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . , . . . |[/go]
Above, black has made some territory on the top, and has stones on the right side. White might take the 3-3 point, but other than that doesn't have much presence in the area.
$$Wc
$$ -------------------+
$$ . . . . 9 . . . . . |
$$ . . . 5 6 7 3 . . . |
$$ . . 0 4 1 . . . . . |
$$ , . . . 8 . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . 2 . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . , . . . |
- Click Here To Show Diagram Code
[go]$$Wc
$$ -------------------+
$$ . . . . 9 . . . . . |
$$ . . . 5 6 7 3 . . . |
$$ . . 0 4 1 . . . . . |
$$ , . . . 8 . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . 2 . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . , . . . |[/go]
Above, white captures a single stone, but black gets good central influence.
$$Wc
$$ -------------------+
$$ . . . . . . . . . . |
$$ . . . . 8 . 3 . . . |
$$ . . 6 4 1 . . . . . |
$$ , . . 5 7 . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . 2 . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . , . . . |
- Click Here To Show Diagram Code
[go]$$Wc
$$ -------------------+
$$ . . . . . . . . . . |
$$ . . . . 8 . 3 . . . |
$$ . . 6 4 1 . . . . . |
$$ , . . 5 7 . X . . . |
$$ . . . . . . . . . . |
$$ . . . . . . 2 . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . . , . . . |[/go]
Above, white's shape is awkward, and black again has presence on both the top and the right.
Of course, there are tons of possibilities. But I cannot say that I feel that black is necessarily bad in them, given the correct board position.