(;
GM[1]
SZ[19]
AW[ch][jc][lc][pc][qc][qb][qe][qf]
AB[dc][cf][hc][nc][pb][pd][pe]
LB[qc:2][pd:1]
C[Problem 100. Black to play.  

This time White solidly connects with 2 after Black 1. How does Black respond ? ]
(;B[ne]
TR[pe][pd][pb][qb][qc][qe]

TE[2]
C[Correct Answer.  

Again Black 1 is the vital point. Black's success can be measured by the fact that his three marked stones have forced White to make three submissive moves, shown by the three marked white stones. <= ]
)
(;B[oc]
C[Failure.  

Of course, Black would like to play 1, ... ]
;W[ne]
C[... but White would then hit him at the vital point of 2, destroying his shape. <= ]
)
)