3-4 point, high approach, ogeima

Ogeima  

Database search (gobase) in a 10x10 quadrant reveals two games with a, one game with c and three games with tenuki.

a: Corner contact  

The other contact play reverts to a 5-4 point joseki. The database search gives at a or b.

According to All About Joseki, the downside to instead of the usual play at is that now an invasion by white at y is less severe because a black play at z is sente, which would not be the case with at .

Tenuki  

Professional play tells that if black plays tenuki, white's aim is to attack at b.

Cutting contact  

Cutting through the ogeima is not seen in pro play. The cross-cut - is inevitable. Then White has many options.

Simplest  

The simplest idea is to strengthen the weakest stone in the crosscut. Even though is blighted, the corner is big and Black has no eyes.

Atari  

The atari doesn't look too good. Black gets a big corner and White's shape is troubled by a.

Descend  

The descent is not as sharp. Black is easier here than in the "simplest" diagram.