(;AB[so]AB[ro]AB[qn]AB[qm]AB[qo]AW[rn]AW[sn]AW[rm]AW[sl]AW[ql]AW[qk]AB[pl]AB[pk]AB[pj]AW[pi]AW[qi]AB[oi]AB[og]AB[ph]AB[qh]AB[rh]AB[rg]C[Black to kill]AP[goproblems]
(;B[rk]
(;W[rj]C[CHOICE]
(;B[qj];W[rl]
(;B[sj];W[sk];B[si]C[RIGHT])
(;B[ri];W[sj])
(;B[sk];W[sj])
(;B[si];W[sj]))
(;B[ri];W[sk])
(;B[sk];W[sj])
(;B[rl];W[sk])
(;B[sj];W[qj]
(;B[sk];W[si])
(;B[ri];W[rl])
(;B[rl];W[sk])
(;B[si];W[sk]))
(;B[si];W[sj]))
(;W[qj]
(;B[rl]C[RIGHT])
(;B[rj]
(;W[rl]
(;B[ri]C[RIGHT])
(;B[si]C[RIGHT])
(;B[sj]C[RIGHT]))
(;W[ri]
(;B[rl]C[RIGHT])
(;B[si]C[RIGHT])))
(;B[sj];W[rj]
(;B[sk];W[si])
(;B[ri];W[rl])
(;B[rl];W[sk])
(;B[si];W[sk]))
(;B[si];W[rj])
(;B[ri];W[rj];B[sj];W[rl])
(;B[sk];W[rj])))
(;B[rl];W[rk])
(;B[rj];W[rk])
(;B[sj];W[rj]
(;B[sk];W[si])
(;B[si];W[sk])
(;B[qj];W[rk])
(;B[ri];W[rk]))
(;B[sk];W[rj]
(;B[rk];W[sj])
(;B[si];W[sj])
(;B[sj];W[si]))
(;B[qj];W[rk])
(;B[ri];W[rk])
(;B[si];W[rk])
(;B[sh];W[rk]))