Systematic Joseki 4-4 4-6
Systematic Joseki 4-4 4-6 - Joseki - Hoshi
The high approach is played with the intention of developing a framework in direction of the circled point. It gives Black the option to gain a lot of territory in the corner. White gains influence vs the territory gained by Black.
Here the high approach at makes sense, but a is preferable to b because there is not much for white to develop around c.
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