(;
GM[1]
SZ[19]
AW[ed][fd][fe][fg][dp][op][pp][qp][qo][ro][pk][ph][kd]
AB[dc][cd][de][ee][dh][rp][rq][qq][pq][nq][mq][qn][qd][oc]
LB[eb:A][on:C][cn:B]
C[Problem 128. White to play.  

Where should White play: at A, B, or C ? ]
(;W[on]
TR[mq]

TE[2]
C[Correct Answer.  

In response to the marked stone, White 1 is the proper response. ]
;B[cn]
C[As expected, Black will play 2 ... ]
;W[fp];B[dk]
C[... and 4, but ... ]
;W[oe]
C[... White will cap at 5, and suddenly a white moyo emerges in the center. <= ]
)
(;W[eb]
LB[cn:A]
C[Failure.  

Locally, both White 1 and White A are big moves, but ... ]
;B[rn]
C[... if Black is allowed to play 2 ... ]
;W[pn];B[pm]
C[... and 4, the right side could be thrown into confusion. <= ]
)
(;W[cn]
C[Failure.  

Also wrong. <= ]
)
)