BSR2003 Lower Left

White moves first  

is gote. Black: 37 points, White 19. Score: +18

Black moves first  

is gote. and are added to finish encircling.

Black : 43 (taking into account the captured stone). White 11. The score is +32.

Local score is +25. The value of the move is 7.

Black moves first. Variation b.  

Black: 42. White 8. Score: +34. This variation is 2 points worse for White.

Black moves first. White tenuki.  

Black 45. White 6. The score +39.

The value of white's tenuki is -3.5.

White moves first. Black tenuki.  

Black: 35. White: 19. The score: +16. The value of Black's tenuki is -1. If White cannot find a way to explore the aji, of course.

White combination  

This and put Black in difficulty.

First answer  

seems too greedy.

Second answer  

This answer is bad shape, shortage of liberties.

Third answer  

This is simpler; but White gains a lot.