(;AB[pd]AB[qe]AW[qf]AB[pi]AB[pj]AB[qk]AB[rj]AW[rk]AB[rl]AW[ql]AW[pl]AW[ok]AW[oj]AW[mj]AW[nd]AW[md]AW[nc]AW[nb]AB[mb]AB[mc]AB[ld]AB[kd]AB[jd]AB[me]AW[le]AW[mf]AB[ne]TR[me]TR[ne]C[Catch the marked stones]AP[goproblems]
(;W[oe];B[nf];W[ng];B[of]
(;W[pf];B[og];W[oh];B[pg];W[ph];B[qg];W[rg];B[qh];W[qi];B[rh];W[ri];B[sh]
(;W[sg]C[That's it. Despite the tight quarters it is just a ladder!RIGHT];B[si];W[sj]C[RIGHT])
(;W[si]C[RIGHT]))
(;W[og];B[pf]C[Black is out.]))
(;W[nf];B[oe]))