(;AB[jb]AB[ja]AW[jc]AB[lb]AB[mb]AB[nb]AB[na]AB[kc]AB[lc]AW[la]AW[jd]AW[hd]AW[kd]AW[ld]AW[mc]AW[nd]AB[ob]AB[pa]AW[oc]AW[pc]AW[qb]AW[qa]AW[qc]AB[ia]AB[ib]AW[ic]AW[hb]AW[ha]TR[la]C[Uh-oh. Tenuki at T if black is now dead.]LB[mf:T]AP[goproblems]
(;B[ma];W[ka]
(;B[kb];W[pb])
(;B[pb];W[kb];B[jb]C[RIGHT]))
(;B[pb];W[kb]
(;B[ka];W[kb];B[jb];W[ja]C[Ko.])
(;B[ma];W[ka];B[jb]C[RIGHT]))
(;B[kb];W[pb])
(;B[ka];W[kb];B[jb];W[ja]C[Ko.])
(;B[mf];W[ka]C[Black could have lived.]))