this is a tesuji that my teacher played out in a game.
(;AB[pb]AB[pc]AB[oc]AB[od]AB[nb]AW[nc]AW[nd]AW[oe]AW[pd]AW[qc]AW[qb]AW[pe]AW[ne]AB[mc]AB[md]AB[jc]AW[hc]AW[dc]AW[ce]LB[md:1]LB[ne:2]LB[jc:3]C[the best way to attack is...]AB[ob]AW[pa]LB[pa:4]LB[ob:5]AP[goproblems]
(;W[kb];B[jb]
(;W[lb];B[mb])
(;W[kc];B[kd]C[:(]))
(;W[lb];B[mb]
(;W[kc];B[kd];W[jb]C[yesRIGHT])
(;W[jb];B[ib];W[kc]C[good!RIGHT]))
(;W[me];B[kd])
(;W[ke];B[lb])
(;W[jb];B[kb];W[ib];B[ke]))