(;GM[1]
FF[4]
AP[Hibiscus:2.1]
SZ[19]
ST[3]
;AB[dd][dj][jd][oc][pd][pf]
AW[hc][ld][nc][nd]
PL[B]
C[How to prevent the connection? (Part 1)]
LB[yy:0](;B[jb]
MN[1]
C[RIGHT]
)(;B[ie]
C[White can connect with A.]
LB[ie:1][jb:A])(;B[jc]
C[Too solid.
(See commentary for a more
detailed explanation.)]
)(;B[ic]
;W[hd]
;B[jf]
LB[jf:3]TR[ic][hd]C[The marked exchange is bad for Black
as it strengthens White.]
))