(;GM[1]
FF[4]
AP[Hibiscus:2.1]
SZ[19]
ST[3]
;C[Warning seriously difficult problem!
Black to kill.]
PL[B]
AB[lb][mc][me][ne][ob][oc][og][pj][qe][qh][qi][rf][rg]
AW[nf][ng][oa][od][pb][pd][ph][pi][qg][rd][re]
(;B[pc]
MN[1]
(;W[qc]
;B[rb]
;W[qb]
C[Please play at A]
LB[qb:5][sb:A](;B[sb]
;W[se]
;B[sc]
;W[pa]
;B[ra]
;W[pf]
LB[pf:10][qf:A];B[qf]
;W[qd]
LB[qd:12][of:A];B[of]
;W[pg]
;B[pe]
;W[oe]
;B[oh]
;W[oi]
;B[nh]
;W[oj]
(;B[nj]
;W[pk]
(;B[rk]
;W[ni]
;B[mh]
;W[rl]
LB[rl:26][ri:A];B[ri]
;W[qk]
;B[rj]
;W[sg]
;B[ql]
;W[pl]
;B[qm]
;W[rm]
;B[pm]
;W[qn]
;B[ok]
;W[mi]
;B[ol]
C[RIGHT]
)(;B[qj]
;W[ni]
;B[mh]
;W[qk]
;B[rk]
;W[rl]
(;B[sj]
;W[rh]
;B[ri]
;W[sh]
;B[si]
;W[sl]
;B[ok]
;W[mi]
;B[ql]
;W[pl]
;B[qm]
;W[sk]
;B[sg]
;W[rh]
)(;B[sk]
;W[rj]
;B[ri]
;W[sg]
;B[sj]
;W[sf]
;B[rh]
;W[sh]
)))(;B[mh]
;W[pk]
(;B[rk]
;W[rl]
(;B[ri]
;W[qk]
;B[rj]
;W[sg]
;B[rm]
;W[ql]
;B[sl]
;W[sf]
;B[rh]
;W[qn]
;B[rn]
;W[qo]
;B[ro]
;W[rp]
;B[qp]
;W[rq]
;B[qm]
;W[pm]
;B[pn]
;W[po]
;B[on]
;W[om]
;B[qq]
;W[qr]
;B[oo]
;W[pp]
;B[pq]
;W[op]
;B[pr]
;W[np]
;B[rr]
;W[sm]
;B[sn]
;W[sk]
;B[sj]
;W[sh]
;B[sq]
;W[qj]
)(;B[qj]
;W[qk]
;B[sk]
;W[rj]
;B[ri]
;W[sg]
;B[rh]
;W[sf]
;B[sj]
;W[sh]
))(;B[qj]
C[Please choose navigate to find out
why this is wrong.]
)))(;B[ra]
LB[ra:6][sb:A]C[This is equivalent to Black A]
;W[se]
;B[sc]
;W[sb]
;B[pa]
;W[rc]
;B[sa]
))(;W[qd]
;B[pf]
;W[qc]
;B[rb]
C[White is dead.]
))(;B[qc]
;W[qd]
;B[pc]
;W[of]
;B[oe]
;W[pe]
;B[pf]
;W[qf]
))