(;
GM[1]
SZ[19]
AW[gd][gc][id][hg][fg][bd][bf][cf][df][de][dd][dp]
AB[bc][cb][db][dc][fb][fc][fd][fe][cd][ce][be][pq][qd][nc]
LB[dm:A][jp:C][po:B]
C[Problem 129. White to play.  

Taking into account White's position in the upper left, where do you think White should play ? ]
(;W[dm]
TE[2]
C[Correct Answer.  

White should extend to 1, making a moyo on the left side. ]
;B[ip]
C[This enables Black to make the good point of 2, ... ]
;W[po]
C[... but White can approach with 3, and, ... ]
;B[qo];W[qn];B[qp];W[pn];B[np];W[pj]
C[... after the joseki to White 9, Black is unable to make a moyo on the right side. <= ]
)
(;W[jp]
C[Failure.  

White 1 is a big extension, but it is premature. ]
;B[cn]
LB[dh:A]
C[Black can approach at 2, as well as force with A, so White's moyo strategy will have failed. <= ]
)
)