(;
GM[1]
SZ[19]
AW[dd][ec][df][ff][gf][ge][jc][jd][kf][nc][og][oh][ph][mh][mi][ng][po][qp][qq][rr][cp][dp][ep][eq][fp][fo][lp][mp][no][ko][jo]
AB[fc][fd][hd][id][if][hf][gg][ih][pd][nd][mc][pf][oi][pj][nh][ni][pm][cq][dq][er][fq][gq][gp][hn][ip][jp][kp][lq][mq][nq][pq][qr]
LB[nd:A][ng:B][mc:C][mh:D][ni:E][mi:F]
C[Problem 54. Black to play.  

The game in Problem 48 continued with the sequence to White F. What should Black do now ? ]
;B[mj]
TE[2]
C[Correct Answer.  

The hane of Black 1 severely attacks White's stones. ]
(;W[lj]
C[If White 2, ... ]
;B[mg]
C[... Black cuts at 3 and ... ]
;W[mf];B[lg];W[nf];B[lf];W[le];B[li]
C[... captures two stones with the sequence to 9. ]
;W[me]
C[White connects at 10, but her stones at the top are in trouble. <= ]
)
(;W[mg]
C[If White defends against the cut by connecting at 2, ... ]
;B[lj]
C[... Black will extend to 3 and ... ]
;W[ki];B[jk]
C[... White's stones are trapped and eyeless after Black 5. <= ]
)
)