(;GM[1] FF[4] AP[Hibiscus:2.1] SZ[19] ST[3] PL[B] ;AB[ak][bb][bc][cb][ck][cl][cp][db][dc][dj][dm][dp][ea][eb][ej][ek][el][ep][eq][fc][ff][fh][fj][fn][fo][fp][fr][gd][ge][gj][gm][gp][hd][hf][hg][hj][hp][hq][il][ip][jc][jf][jj][jp][ke][kk][ko][kq][le][ll][lo][me][mo][mp][nd][ne][nf][nl][nm][nn][oa][ob][oe][og][om][pg][pj][pk][pl][qc][qd][qg][ql][qm][qp][qr][rf][rn][ro][rq][rr] AW[ai][bd][bh][bj][bp][cc][cd][ch][cj][cm][cn][co][cq][dd][di][dq][dr][ec][ed][ei][em][en][eo][er][fb][fi][fm][fq][gb][gh][gq][gr][hc][he][hi][hl][hr][ic][id][ie][if][iq][je][jh][jq][kc][kd][kp][lm][lp][lq][mb][mf][mg][mn][mq][nb][ng][nj][no][nq][of][oh][on][op][pd][pe][ph][pi][pm][pn][pq][pr][qj][qk][qn][qq][rh][rl][rm] C[How did Go Seigen save his group around G15?] (;B[ih] MN[1] ;W[ii] (;B[ig] ;W[jg] (;B[ji] ;W[fg] ;B[kf] LB[kf:7][kf:7][il:A][kf:7][kf:7]C[Can you imagine that Go Seigen read out all of this when he played A?] ;W[ij] ;B[ik] ;W[hh] ;B[gf] C[RIGHT Next white played at A but what would happen if he had played at B instead? (See next problem) ] LB[gf:11][mk:A][kh:B])(;B[gi] ;W[hh] ;B[ji] ;W[fg] ))(;B[jg] ;W[ig] ;B[hh] ;W[gi] ;B[ji] ;W[kh] )(;B[gi] ;W[hh] ;B[ig] ;W[jg] ;B[ji] ;W[fg] ))(;B[ig] ;W[jg] (;B[ii] ;W[ih] ;B[hh] ;W[gi] ;B[kf] ;W[ji] ;B[ij] ;W[lh] )(;B[gi] ;W[hh] ;B[ih] ;W[ii] ;B[ji] ;W[fg] ;B[gf] ;W[kf] ))(;B[hh] MN[1] ;W[gi] ))