(;AB[rr]AB[qr]AB[qp]AB[rp]AB[qo]AB[po]AB[on]AB[pq]AB[oq]AW[pp]AW[op]AW[np]AW[no]AW[nn]AW[nq]AW[nr]AW[qq]AW[rq]AW[om]AW[pm]AB[nm]AB[nl]AB[ol]AB[mn]AB[lm]AB[km]AB[jn]AB[in]AB[io]AB[ho]AW[jo]AW[ko]AW[lo]AW[mo]AW[hp]AW[ip]AW[iq]AW[jr]AB[jp]AB[kp]AB[lp]AB[hr]AB[gq]AB[gp]AW[go]AW[gn]AW[hn]AW[hm]AW[il]AW[kl]TR[hr]C[White (Go Seigen) ignored this move to attack Black (Sakata Eio) elsewhere. Black to get the best result.]AP[goproblems]
(;B[kr];W[lr]
(;B[js];W[is]
(;B[ir];W[jq]
(;B[hs];W[kq]
(;B[lq];W[ks];B[hq];W[is]C[Correct, well doneFORCERIGHT])
(;B[ks];W[ls]C[White is safe]))
(;B[ks];W[kq]C[White is safe])
(;B[kq];W[ks]C[White is safe]))
(;B[jq];W[ir];B[ks];W[kq]C[White is safe])
(;B[ks];W[kq]C[White is safe]))
(;B[ks];W[kq]
(;B[jq];W[lq]C[White is safe])
(;B[lq];W[mq]C[]
(;B[is];W[jq]C[White is safe])
(;B[ls];W[mr];B[is];W[jq]C[White is safe])
(;B[jq];W[mp]C[White is safe])
(;B[js];W[jq]C[White is safe])
(;B[ir];W[jq]C[White is safe]))
(;B[js];W[is]C[White is safe])
(;B[ir];W[jq]C[White is safe])
(;B[is];W[jq]C[White is safe]))
(;B[jq];W[ir]C[White wins the capturing race])
(;B[ir];W[jq]
(;B[kq];W[ks]C[White is safe])
(;B[js];W[kq]C[White is safe])
(;B[ks];W[kq]C[White is safe])
(;B[lq];W[kq]C[oops])))
(;B[lr];W[kr]C[White wins the capturing race])
(;B[ir];W[jq]
(;B[kr];W[kq]C[White is safe])
(;B[lr];W[kr]C[White wins the capturing race]))
(;B[jq];W[ir]
(;B[kr];W[lr]C[White wins the capturing race])
(;B[lr];W[kr]C[White is safe])))