(;
GM[1]
SZ[19]
AW[dd][ce][be][df][ef][cg][ch][bo][co][dp][fp][nq][kq][pr][qb][qc][pb][pd][pe][jd]
AB[cc][dc][fc][cf][bf][bg][bh][cj][dh][dg][bn][cn][en][qq][pp][pn][qi][pc][oc][qd]
C[Problem 112. Black to play.  

How can Black take the initiative at the top ? ]
;B[gf]
TE[2]
C[Correct Answer.  

The sequence ... ]
;W[ed];B[gb];W[eh];B[fe]
C[... to Black 5 severely attacks the white stones in the upper left. ]
;W[gh]
C[After White escapes to 6 ... ]
;B[md]
C[... Black jumps to 7, forcing ... ]
;W[qf]
LB[qe:A]
C[... White to defend at 8 (Black is threatening to play A). Next, ... ]
;B[ke]
C[... Black attacks the lone white stone at the top with 9. ]
(;W[ih]
C[White now needs to defend her stones in the center with 10. ]
;B[hi]
C[After exchanging 11 ... ]
;W[hh]
C[... for 12, ... ]
;B[if]
C[... Black secures the top with 13. <= ]
)
(;W[if]
C[Variation.  

If White runs away by jumping to 10 here, ... ]
;B[hg]
C[... Black keeps the white stones on the left separated from its allies at the top with 11. ]
;W[kf];B[lf];W[kg];B[je];W[ie];B[kd];W[jc];B[lg];W[kh];B[mi]
LB[jf:A]
C[After Black 21, White's stones on the left and at the top are under attack. The defect in White's shape at A will be a burden. <= ]
)
)