(;
GM[1]
SZ[19]
AW[jd][nc]
AB[dd][hc][pd][pf]
TR[jd][hc]
C[Problem 2. Black to play.  

White's marked stone is high, while Black's marked stone is lying in wait to gouge out White's base. What is the correct move for Black ? ]
(;B[lc]
TE[2]
C[Correct Answer.  

Black 1 is a strong invasion. It is the simplest way to play. <= ]
)
(;B[ld]
TE[2]
C[Correct Answer.  

The high invasion of Black 1 is also correct, but it is more difficult. <= ]
)
)