(;
GM[1]
SZ[19]
AW[dd][dp][jd][nc]
AB[pd][pf][pk][pq]
LB[nc:1][pf:2][jd:3]
C[Problem 7. Black to play.  

How should Black play after White extends to 3 ? ]
(;B[jp]
TE[2]
C[Correct Answer.  

Black's aim in playing the Chinese opening is both to take territory and to make a moyo. Therefore, Black extends to 1, mapping out a moyo in the lower right. <= ]
)
(;B[cj]
C[Too flat.  

Black 1 is contrary to the spirit of  the Chinese opening. ]
;W[jp]
C[White will extend to 2 and Black's formation on the right side is too flat. <= ]
)
(;B[fq]
C[A little unsatisfactory.  

No one can say that the approach move of Black 1 is bad, but ... ]
;W[jp]
LB[cn:A][dn:B][cq:C]
C[... White will pincer with 2 and, whether Black plays A, B, or C next, he must give up any hope of building a moyo. <= ]
)
)