(;
GM[1]
SZ[19]
AW[dp][dd][jd][nc][qn][po][jp]
AB[pd][pf][pk][pq][qp][qo]
LB[qo:1][qp:3][qn:2]
C[Problem 47. White to play.  

Black 1 violates the proverb which instructs us not to attach against weak stones. After Black draws back with 3, where should White play ? ]
(;W[ol]
LB[pn:B][nn:A]

TE[2]
C[Correct Answer.  

When your opponent's stones are strong, you must play lightly to make sabaki. White 1 or White A is such a move. Cutting at B would be a bad move for Black. <= ]
)
(;W[nn]
TE[2]
C[Correct Answer.  

Also correct. <= ]
)
(;W[pn]
C[Failure.  

Connecting at 1 leaves White with a heavy group. ]
;B[op]
C[After Black 2, is becomes a good target for Black. <= ]
)
)