(;
GM[1]
SZ[19]
AW[dd][dj][dp][pc][oc][nd][jd]
AB[jj][jp][pp][pj][pd][pf][qc][qb]
C[Problem 157. White to play.  

When Black occupies the central star point, he has staked out a huge moyo in the lower right. How should White counter it ? ]
(;W[nf]
LB[ld:A]

TE[2]
C[Correct Answer.  

White should jump to 1. This move defends against White's weak point of A, ... ]
;B[ph]
C[... forces Black to answer at 2, and expands White's moyo at the top. ]
;W[gp]
C[White can now extend to 3. <= ]
)
(;W[gp]
C[Failure.  

It is premature to play White 1 without any preparation. ]
;B[nf]
C[Black will jump to 2, ... ]
;W[ld]
C[... forcing White to defend with 3. ]
;B[np]
C[Now Black solidifies his moyo with 4. <= ]
)
)