(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[http://senseis.xmp.net/?LadderExercise3/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?LadderExercise3/Solution

Solution]
PL[B]

AB[lc][mc][oc][dd][kd][nd][pd][je][me][if][lf][hg][kg][gh][jh][ii][hj][cl][el][em][do][dp][op][qp][rp][dq][jq][pq]
AW[nb][ob][pb][nc][qc][ld][md][ke][le][jf][kf][qf][ig][jg][hh][ih][gi][hi][pj][ek][pm][cn][co][po][qo][cp][cq][mq]

;B[fi]C[B21]MN[21]
;W[gj]C[W22]MN[22]
;B[gk]C[B23]MN[23]
;W[fj]C[W24]MN[24]
;B[ej]C[B25]MN[25]
;W[fk]C[W26]MN[26]
;B[dk]C[B27]MN[27]
;W[fl]C[W28]MN[28]
;B[gl]C[B29]MN[29]
;W[fm]C[W30]MN[30]

;
)
