(;
GM[1]
SZ[19]
AW[dc][cd][ce][fc][kc][nc][pb][qj][pl][qn][rp][dp][cq][cn]
AB[pd][qc][qf][qq][pp][np][cl][dj][cf][df][de][iq][fq][dr]
TR[pl]
C[Problem 63. Black to play.  

White has just defended her position on the lower right side. Where should Black play next ? ]
(;B[cr]
TE[2]
C[Correct Answer.  

Most of White's stones are secure, but, if Black crawls to 1, he threatens White's three stones in the lower left corner. Next ... ]
(;W[fp]
C[... White attaches at 2 and ... ]
;B[gp];W[fo];B[go];W[fm];B[gn];W[fn]
C[... secures her stones with the sequence to 7. White has gained no territory, but, ... ]
;B[hl]
C[... when Black plays 8, a large moyo at the bottom is starting to take shape. <= ]
)
(;W[br]
C[Failure for White.  

White 2 here ... ]
;B[bp]
C[... would be answered by Black 3, leaving White without eyes. <= ]
))
(;B[ge]
C[Failure.  

If Black jumps to 1, ... ]
;W[cr]
LB[kq:A]
C[... White will defend with 2. White is strong on the lower left and right, so she can now aim at the invasion of A. <= ]
)
)