is best. It secures the corner, develops the left side and reduces Black's center. It renders Black's stone there ineffective.
would build Black's center and threaten to surround the corner. It is almost sente.
IN comparison, b is single minded in its development and c has an uncertain outcome. The board is large enough to build and compensate Black's right side moyo.
![[Welcome to Sensei's Library!]](images/stone-hello.png "Sensei's Library")
![[Diagram]](diagrams/0/640c2cb04d5a938059ac9d4260e1a485.png)
is best. It secures the corner, develops the left side and reduces Black's center. It renders Black's stone there ineffective.
![[Diagram]](diagrams/14/279e07bd8438556aaff220c91c83403e.png)
would build Black's center and threaten to surround the corner. It is almost sente.