(;
GM[1]
SZ[19]
AW[cc][cq][qn][qk]
AB[cj][pq][qp][qd][oc]
LB[qd:1][cc:2][cj:9][cq:4][qn:6][qk:8][oc:5][pq:3][qp:7]
C[Problem 72. White to play.  

In this opening, all the corners have been occupied and Black has taken a big point with 9. Where should White play next ? ]
(;W[qh]
TE[2]
C[Correct Answer.  

White 1 is the only move. ]
;B[jq]
LB[co:A][ce:B]
C[Black 2, Black A, or Black B all have the same value. <= ]
)
(;W[jq]
C[Failure.  

If White plays here, ... ]
;B[qi]
C[... Black 2 would be a severe attack against the white stones. Black 2 is also an ideal extension from his corner enclosure above. <= ]
)
)