: ( 745)
White captures Black's centre group. Without knowledge of the decisive oki that will now follow, this will not affect the score (four points for Black).
:
However, White uses the oki here.
:
As explained later ( 781), with the moves to , White gains five points locally (/), compared to the sequence without the oki of . But destroys one point of potential White territory (), so White's advantage is reduced to four points.
(A) 
745
:
:
781
/
), compared to the sequence without the oki of 
destroys one point of potential White territory (
), so White's advantage is reduced to four points.
