5-2 invasion
Keywords: MiddleGame, Joseki
(See page 4463 enclosure, 2-5 approach. Charles)
WTD When I first saw the 5-2 stone played, it seemed an obscure place to invade. Later reading informed me that this is the pivot point of black's large formation, and gave 5-2 invasion sequence 1:
Other variations following the black atari from inside are:
If black plays atari from outside, the following sequence is playable:
(See also the reference by Charles above)