(;
GM[1]
SZ[19]
AW[qm][pm][nc][nd][cn][gd][jf][nf][lc]
AB[jp][jd][pj][dj][dp][pd][pp][dd][cf][fp][qn][oc][pf][nj][le][lg]
TR[lc]
C[Problem 5. Black to play.  

This is a continuation of Problem 1. How should Black respond to the marked stone ? ]
(;B[je]
TE[2]
C[Correct Answer.  

Black can make shape by bumping against the white stone 1. ]
;W[kf]
C[After exchanging 2 ... ]
;B[lf]
C[... for 3, ... ]
(;W[hf]
C[... White must defend with 4. ]
;B[ld]
C[Next, Black makes a thick shape with 5. White is thin on both the left and the right, so at least one of these groups will come under attack. <= ]
)
(;W[ke]
LB[hf:@]
C[If White pushes in with 4 here instead of @, ... ]
;B[kd]
C[... Black blocks with 5. ]
;W[ld]
C[If White cuts at 6, ... ]
;B[if]
C[... Black hanes with 7. This will be an easy fight for Black. <= ]
))
(;B[kd]
C[How the game continued.  

Black 1 made bad shape. ]
;W[mh]
C[White moved out into the center with 2 ... ]
;B[og];W[lh]
C[... and 4. ]
;B[kg];W[jb]
LB[mh:2][og:3]
C[Black 3 threatened to cut off the stone at 2, but White settled her stones by sliding to 6, ... ]
;B[ic];W[lj]
LB[og:3][jb:6]
C[... then reinforcing the ones in the center by jumping to 8. Note how White didn't merely link up after Black 3; instead she took the initiative by expanding her positions with 6 and 8. <= ]
)
)