(;
GM[1]
SZ[19]
AW[ch][jc][lc][je][pc][qc][qb][qe][qf]
AB[dc][cf][hc][nc][ne][pb][pd][pe]
LB[je:2][ne:1]
C[Problem 103. Black to play.  

After Black 1, White reinforces her stones in the center with 2. How should Black continue his operations in the top right ? ]
;B[qd]
TE[2]
C[Correct Answer.  

Black should push through and ... ]
;W[rd]
(;B[rc]
LB[qd:1]
C[... cut with 1 and 3. However White responds, Black will gain an advantage. c<= ]
)
(;B[re]
C[Failure.  

Black suffers a loss if he cuts on the other side with 3. The reason will become clear in the next few problems. ]
;W[rf]
C[White ataris with 4. <= ]
)
)