4463 enclosure second-line side attachment

reference diagram  

This position arises from 4463 enclosure 2-5 approach. White can wedge at a or extend at b. at c is a trick play which requires knowledge of a clever tesuji to refute.

Wedge

white wedges  

Black will usually cut at a, but the block at b is also possible.

Cut

wedge and cut  

There is no choice for and ^[1], but is sometimes played at instead.

continuation  

This is the most common continuation, but may be played at or elsewhere. After , White chooses between a and b.

In a 2012 game commentary at gogameguru, An Younggil, 8p, says this sequence was taught to him as joseki as a pupil, but today it is regarded as too good for Black. Because of this in the previous diagram is rarely played nowadays, and white almost always plays the extend variation below instead.

small life  

Incidentally, White can live this way, but it is small life. Still, as an invasion pattern it must be known.

Block

wedge and block  

Playing seems to lack fighting spirit, but it is sometimes seen. After and , white should continue at . It's vital shape point. If White omits the move, black pushes at the point, and it's actually like hitting the head of 2 white stones , very painful for white.

Extend

white extends  

Black will nearly always defend at . The following moves depend on the surrounding position, but white will probably play at a or b next, then black can either continue to attack the white group or else tenuki.

trick move  

is a trick play. The natural move is a, to connect, which is falling for the trick.

soft reply  

Up 'till , Black is forced into a low position. Compared to black's initial strength, White gets too much influence here. The - exchange now looks very silly.

resistance  

is the stronger reply, but requires knowledge of a tesuji.

Patting the raccoon-dog's belly  

The Patting the raccoon-dog's belly tesuji is applied with and .

Too easy  

If here immediately, White lives easily in the corner

This? (4 connects)  

or perhaps worse

Actually this  

The previous diagram is not correct play for Black, because Black would play like so

But it fails  

White can try to resist like so

Seems better  

So white should do something like this and live in sente