(;
GM[1]
SZ[19]
AW[dg][dh][de][dd][dc][ec][eb][hc][jq][dq][dp][do][em][cl]
AB[cb][db][cc][cd][cf][cg][fc][pd][pq][qo][bn][cn][cp][cq]
LB[lq:C][md:A][pj:B]
C[Problem 126. Black to play.  

White is thick at the left side from the top to the bottom. Although Black has a lot of profit, he still has to prevent White from expanding the scale of her moyo. Where should he play ? ]
(;B[md]
TE[2]
C[Correct Answer.  

Black 1 blocks White from making a large-scale moyo at the top while making territory. ]
;W[nq]
C[If White answers with 2, ... ]
;B[ko];W[no];B[io];W[jn];B[jo];W[lq];B[hm]
C[... Black is satisfied to erase White's moyo with the sequence to 9. <= ]
)
(;B[lq]
C[Failure.  

Locally, Black 1 here is big, but ... ]
;W[md]
C[... it is too dangerous to let White play at 2. <= ]
)
(;B[pj]
C[Failure.  

Black 1 is not good ... ]
;W[nd]
C[... because it lets White make an approach move at 2. ]
;B[pf];W[pc];B[qc];W[oc];B[qb];W[nf]
C[After the sequence to 8, White has made a huge moyo at the top. <= ]
)
)