(;GM[1]FF[4]SZ[19]
GN[The ladder]
PC[http://senseis.xmp.net/?LadderExercise2/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?LadderExercise2/Solution

The ladder]
PL[B]

AB[gb][nb][ob][cc][ec][oc][pd][qd][df][fg][gg][fh][di][ei][ki][fj][gj][hj][ij][kj][ck][jk][el][jl][cn][po][pq]
AW[lc][nc][gd][nd][od][ce][de][ee][ef][eg][og][eh][gh][ih][fi][gi][ii][ji][jj][kk][gl][kl][cm][dm][km][dp][fp]
CR[km]
LB[hg:a][kh:b]

;B[hh]C[B1]MN[1]
;W[hi]C[W2]MN[2]
;B[ig]C[B3]MN[3]
;W[jh]C[W4]MN[4]
;B[jg]C[B5]MN[5]

;CR[km]
LB[hg:a][kh:b]
)
