(;GM[1] FF[4] AP[Hibiscus:2.1] SZ[19] ST[3] ;C[White to play an infamous tesuji that probably won him the game.] PL[W] AB[ak][bb][bc][cb][ck][cl][cp][db][dc][dj][dm][dp][ea][eb][ej][ek][el][ep][eq][fc][ff][fj][fn][fo][fp][fr][gd][ge][gj][gm][gp][hd][hf][hg][hp][hq][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][fm][fq][gb][gh][gq][gr][hc][he][hi][hr][ic][id][ie][iq][je][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] (;W[hl] MN[160] C[RIGHT This move was discovered by Shusai's student Maeda during a secret study session. How should black answer it? (See next problem)] )(;W[gl] ;B[fl] (;W[hl] ;B[hm] (;W[im] ;B[il] ;W[ik] ;B[jl] ;W[hj] ;B[gk] ;W[hk] ;B[bm] ;W[bn] ;B[an] ;W[dl] ;B[bk] C[This is better for Black] )(;W[hj] ;B[hk] ;W[ik] ;B[gk] (;W[ij] ;B[il] C[Good for black] )(;W[il] ;B[ij] C[White can't do anything] ))(;W[il] ;B[hj] C[White has lost his 3 stones.] ))(;W[hm] ;B[gn] ;W[hk] ;B[hj] ;W[ij] ;B[ik] ;W[ii] ;B[il] )))