4-5 point 4-3 approach ogeima, contact
Difficulty: Advanced Keywords: Joseki
After the 4-5 point 4-3 approach ogeima, the contact play at may look like an obvious choice but it is not considered joseki. White may expect a-b-c for a peaceful result but Black will cut at b instead, leading to a fighting variation which is in his favor.
If the corner diagonal across the board has a ladder breaker may be played at
directly and White can get a good result.
Otherwise, the moves here are almost forced. Now white may choose between a and b but neither gives a good result.