(;
GM[1]
SZ[19]
AW[cf][hc][he][nc][ne][qh]
AB[dd][fd][ff][kd][pd][pf]
LB[kc:A][ne:1]
TR[qh]
C[Problem 50. Black to play.  

This time White has the marked stone in place on the right side. How should Black answer White 1 now ?  

<See Reference Diagram 50 for a deep black invasion at A.> ]
;B[og]
TE[2]
C[Correct Answer.  

Black must move out into the center with 1. ]
;W[kf]
C[If White caps with 2, ... ]
;B[md]
C[... Black can easily break out into the center with 3, ... ]
;W[nd]
C[... White 4, ... ]
;B[lf]
C[... Black 5.  <= ]
)
)