I don't remember seeing this in a shicho problem before, so here you go. Can you capture the three white stones, or should you perhaps just play elsewhere?
(;SZ[19]AW[ia]AW[hb]AW[ic]AW[rf]AW[hh]AW[qh]AW[rh]AW[hi]AW[qi]AW[hj]AW[pj]AW[sj]AW[hk]AW[il]AW[jl]AW[ll]AW[ql]AW[jm]AW[lm]AW[mm]AW[mn]AW[pn]AW[no]AW[np]AW[pp]AW[nq]AW[lr]AW[mr]AW[pr]AB[gb]AB[ib]AB[hc]AB[qg]AB[rg]AB[ri]AB[qj]AB[ik]AB[jk]AB[gl]AB[hl]AB[im]AB[nm]AB[in]AB[jn]AB[kn]AB[ln]AB[nn]AB[mo]AB[kp]AB[mp]AB[mq]LB[ha:B]LB[kl:A]C[A or B?FORCE]GM[1]FF[4]CA[UTF-8]AP[CGoban:2]ST[2]RU[Japanese]KM[0.00]PW[White]PB[Black]PL[B]
(;B[kl];W[km]
(;B[lk];W[ml]
(;B[mk];W[nl];B[ol];W[nk];B[nj];W[ok];B[pk];W[oj];B[oi];W[pi]
(;B[ph];W[sh];B[sg];W[si];B[rj];W[sk];B[rk];W[sl];B[rl];W[sm]C[(this line of play is dedicated to Matti Siivola)];B[rm];W[sn]C[Now there's a proverb..];B[rn];W[so]C['crawling on the second line is bad'];B[ro];W[sp]C[..in this case however..];B[rp];W[sq]C[the opponent is crawling on the first line.];B[rq];W[sr]C[However..];B[rr];W[kk]C[the proverb is correct!])
(;B[sh];W[ph];B[oh];W[pg];B[pf];W[og];B[ng];W[of];B[oe];W[nf];B[mf];W[ne];B[nd];W[me];B[le];W[md];B[mc];W[ld];B[kd];W[lc];B[lb];W[kc];B[jc];W[kb];B[jb];W[ka];B[la];W[kk]C[White survives! (Black cannot play K19)]))
(;B[nl];W[mk]C[White is safe.])))
(;B[ha]MA[il]MA[jl]MA[jm]C[ Also notice, that this threatens to capture the K8 stones :-)RIGHT]))