(;GM[1]FF[4]SZ[19]
GN[White's threat]
PC[http://senseis.xmp.net/?YoseFromGames12/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?YoseFromGames12/Solution

White's threat]
PL[W]

AB[fa][na][pa][eb][gb][hb][kb][ob][pb][qb][rb][fc][hc][ic][jc][kc][rc][cd][gd][jd][od][pd][qd][sd][fe][oe][re][df][ef][ff][gf][nf][pf][qf][sf][cg][dg][ng][og][rg][ch][eh][fh][oh][qh][rh][ei][li][ni][pi][si][cj][dj][ej][hj][ij][jj][lj][mj][nj][oj][rj][sj][bk][ck][ek][hk][jk][mk][ok][pk][rk][bl][el][fl][gl][hl][ll][ml][nl][ql][am][bm][dm][fm][hm][im][jm][lm][qm][cn][dn][fn][hn][mn][nn][on][qn][go][io][jo][mo][oo][qo][cp][fp][gp][ip][op][pp][cq][iq][jq][lq][mq][oq][pq][sq][br][hr][jr][kr][lr][pr][bs][cs][ks][ps][qs]
AW[da][ea][ha][ja][ka][ma][db][ib][jb][lb][mb][nb][cc][ec][lc][nc][oc][pc][qc][dd][ed][fd][hd][id][kd][nd][ae][be][ce][ge][he][je][ke][me][ne][qe][cf][hf][jf][mf][ag][bg][eg][fg][gg][hg][ig][jg][lg][mg][pg][qg][bh][dh][hh][lh][mh][nh][ai][bi][ci][di][gi][hi][ii][ji][ki][mi][aj][bj][fj][gj][kj][ak][fk][ik][kk][lk][sk][al][cl][dl][il][jl][kl][ol][pl][rl][sl][cm][em][km][mm][nm][rm][en][jn][kn][ln][rn][fo][ko][no][ro][ep][hp][jp][kp][lp][mp][np][qp][rp][dq][eq][gq][hq][kq][nq][qq][cr][dr][fr][gr][mr][nr][or][qr][rr][ds][ls][ms][os][rs]

;W[in]C[W1]MN[1]
;W[is]C[W3]MN[3]
;B[ho]C[B4]MN[4]
;W[ir]C[W5]MN[5]

;
)
