(;GM[1]FF[4]SZ[19]
GN[removal of stones]
PC[http://senseis.xmp.net/?GokyoSeimyoVolume3Problem140/Attempts]AP[GoWiki:2009]
DT[2011-12-12]
C[Diagram from http://senseis.xmp.net/?GokyoSeimyoVolume3Problem140/Attempts

removal of stones]
PL[B]

AB[ka][la][ma][bb][cb][db][ib][jb][kb][mb][qb][rb][sb][bc][hc][nc][qc][bd][fd][gd][hd][kd][ld][nd][qd][be][ee][he][ne][oe][pe][bf][ef][ff][if][lf][mf][of][rf][bg][dg][fg][gg][ig][kg][mg][pg][qg][rg][sg][bh][dh][gh][hh][ih][oh][ph][bi][di][ei][fi][ji][ki][ni][oi][bj][ij][kj][lj][nj][qj][rj][bk][kk][mk][nk][qk][bl][cl][ll][ml][nl][ol][ql][am][cm][dm][fm][km][om][qm][dn][en][jn][kn][ln][on][qn][bo][eo][jo][lo][qo][ro][ep][kp][lp][mp][pp][qp][eq][mq][oq][er][nr][or][sr][es][ms]
AW[aa][ba][ca][da][ea][fa][ga][ha][ia][ja][ra][ab][eb][fb][hb][lb][nb][ob][ac][dc][fc][gc][ic][lc][mc][pc][rc][sc][ad][ed][id][md][pd][rd][ae][de][fe][ge][je][me][qe][re][se][af][df][gf][pf][qf][ag][cg][hg][lg][ng][og][ah][ch][jh][kh][lh][mh][nh][qh][rh][sh][ai][ci][gi][hi][ii][mi][pi][qi][ri][aj][ej][fj][jj][mj][oj][pj][sj][ak][dk][ik][jk][ok][pk][al][dl][el][il][kl][pl][sl][bm][em][im][jm][lm][mm][nm][pm][rm][bn][in][nn][pn][co][io][mo][oo][po][so][cp][jp][np][op][sp][jq][lq][nq][pq][rq][cr][lr][mr][gs][hs][ks]

;B[mn]C[B1]MN[1]
;W[jg]C[W2]MN[2]
;B[kf]C[B3]MN[3]
;W[jf]C[W4]MN[4]
;B[no]C[B5]MN[5]

;
)
