(;GM[1]FF[4]SZ[19]
GN[... and goes on...]
PC[http://senseis.xmp.net/?LadderExercise4/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?LadderExercise4/Solution

... and goes on...]
PL[B]

AB[fb][hb][jb][qb][bc][hc][jc][qc][cd][jd][kd][pd][be][de][je][pe][df][hf][jf][dg][jg][pg][rg][eh][hh][ih][oh][ej][oj][ck][pk][qk][bl][dl][nl][ql][nm][om][qm][pn][eo][fo][no][oo][po][dp][gp][hp][mp][qp][fq][nq][qq]
AW[ja][ib][kb][ob][cc][dc][kc][pc][dd][fd][ld][md][od][ee][ge][he][ke][nf][eg][fg][kg][fh][jh][gi][hi][ii][qi][nk][ok][rk][cl][ol][pl][rl][bm][cm][pm][rm][cn][mn][nn][on][qn][go][lo][mo][qo][cp][fp][pp][rp][cq][er]

;B[mk]C[B1]MN[1]
;W[nj]C[W2]MN[2]
;B[ni]C[B3]MN[3]
;W[mj]C[W4]MN[4]
;B[lj]C[B5]MN[5]
;W[mi]C[W6]MN[6]
;B[mh]C[B7]MN[7]
;W[li]C[W8]MN[8]
;B[ki]C[B9]MN[9]
;W[lh]C[W10]MN[10]

;
)
