(;GM[1]FF[4]SZ[19]
GN[41-50]
PC[http://senseis.xmp.net/?MostDifficultProblemEver/ThreeAmateursSolution]AP[GoWiki:2009]
DT[2011-02-25]
C[Diagram from http://senseis.xmp.net/?MostDifficultProblemEver/ThreeAmateursSolution

41-50]
PL[B]

AB[ra][hb][lb][fc][lc][bd][ld][ce][de][fe][le][me][oe][pe][bf][mf][of][og][dh][oh][ph][qh][rh][sh][di][mi][ni][oi][pi][aj][fj][lj][mj][rj][ak][ek][lk][qk][rk][sk][al][el][il][ll][ol][pl][ql][am][bm][em][lm][qm][rm][dn][fn][ln][mn][qn][co][fo][ko][no][oo][po][bp][cp][ep][ip][np][pp][sp][fq][iq][jq][kq][lq][mq][pq][qq][sq][cr][gr][nr][pr][sr][bs][ns][os][ps]
AW[qa][ib][jb][mb][rb][hc][qc][cd][jd][nd][od][ke][qe][re][df][ff][pf][bg][cg][dg][gg][hg][kg][lg][ng][ah][hi][ki][qi][ri][si][bj][cj][jj][nj][oj][pj][qj][dk][jk][nk][ok][dl][jl][ml][nl][rl][sl][hm][jm][mm][om][sm][bn][cn][en][jn][nn][on][pn][rn][sn][jo][mo][qo][ro][so][ap][hp][jp][kp][lp][mp][op][qp][rp][eq][hq][oq][rq][ar][hr][ir][jr][kr][lr][mr][or][rr][ms][rs]

;B[io]C[B41]MN[41]
;W[ho]C[W42]MN[42]
;B[in]C[B43]MN[43]
;W[hn]C[W44]MN[44]
;B[im]C[B45]MN[45]
;W[hl]C[W46]MN[46]
;B[ik]C[B47]MN[47]
;W[hk]C[W48]MN[48]
;B[ij]C[B49]MN[49]
;W[hj]C[W50]MN[50]

;
)
