(;
GM[1]
SZ[19]
AW[ch][jc][pc][qf][oe]
AB[dc][cf][hc][nc]
LB[oe:2][nc:1]
C[Problem 79. Black to play.  

Suppose White answers the invasion of Black 1 with 2. How does Black continue ? ]
;B[ne]
TE[2]
C[Correct Answer.  

Black exchanges 1 ... ]
(;W[of]
C[... for 2, ... ]
;B[je]
C[... then caps with 3. Black's moves flow very beautifully. <= ]
)
(;W[nf]
LB[ne:1]
C[Variation.  

White could answer 1 with 2 ... ]
;B[me];W[je]
C[... and jump to 4. ]
;B[od]
C[Black would then play 5, ... ]
(;W[pd]
C[... followed by White 6. ]
;B[of]
C[If the ladder is favourable, Black would atari at 7 ... ]
;W[pe];B[ng]
C[... and 9. <= ]
)
(;W[pe]
LB[od:5]
C[White could also answer 5 with 6 here, but her shape in this corner is full of holes. <= ]
))
)