(;AW[pp]AB[qn]AW[np]AB[lq]AW[iq]AB[io]AW[kp]AB[mo]AW[mp]AB[lp]AW[lo]AB[ko]AW[ln]AB[jp]AW[kq]AB[jq]AW[kr]AB[jr]MA[jr]C[black plays the marked move. how should white answer to get the best shape?]AP[goproblems]
(;W[lr]C[simply capturing is best. see variationsRIGHT])
(;W[kn];B[lr]
(;W[jo];B[ks];W[ko];B[ip]C[white has lost a lot of territory and the marked stone retains cutting aji]MA[mo])
(;W[ks];B[jo]C[white dies]))
(;W[mq];B[lr])
(;W[mn];B[lr])
(;W[jo];B[jn])
(;W[mr];B[lr])
(;W[no];B[lr])
(;W[jn];B[lr])
(;W[ir];B[lr])
(;W[ks];B[lr])
(;W[ls];B[lr])
(;W[lm];B[lr])
(;W[nr];B[lr])
(;W[pn];B[lr])
(;W[qo];B[lr])
(;W[rp];B[lr])
(;W[qq];B[lr])
(;W[nn];B[lr])
(;W[js];B[lr]))