(;GM[1]FF[4]SZ[19]
GN[Diagram 4 (some obvious moves skipped)]
PC[http://senseis.xmp.net/?NakayamaLadderProblem/Solution]AP[GoWiki:2009]
DT[2009-05-12]
C[Diagram from http://senseis.xmp.net/?NakayamaLadderProblem/Solution

Diagram 4 (some obvious moves skipped)]
PL[B]

AB[fd][fe][bf][cf][df][ef][ff][gf][hf][if][jf][ag][fg][kg][ah][fh][kh][ai][fi][ki][bj][cj][dj][ej][fj][gj][hj][ij][jj][lj][fk][mk][fl][kl][nl][lm][om][pm][jn][mn][qn][rn][sn][fo][jo][no][fp][jp][np][op][rp][sp][fq][jq][nq][qq][gr][hr][ir][jr][kr][lr][mr][pr][fs][ps]
AW[ea][ab][sb][sc][dd][ed][gd][ae][ee][ge][he][ie][je][le][re][af][kf][bg][cg][dg][sg][ch][dh][eh][lh][bi][ci][di][ei][aj][kj][sj][ak][bk][gk][jk][kk][lk][bl][dl][hl][ll][ml][gm][mm][nm][en][nn][on][pn][ao][oo][po][qo][ro][so][pp][qp][oq][pq][er][nr][or][rr][bs][gs][hs][is][js][ks][ls][ms][ns][os]

;B[jl]C[B1]MN[1]
;W[ik]C[W2]MN[2]
;B[il]C[B3]MN[3]
;W[hk]C[W4]MN[4]
;B[hm]C[B5]MN[5]
;W[gl]C[W6]MN[6]
;B[gn]C[B7]MN[7]
;W[fm]C[W8]MN[8]
;B[em]C[B9]MN[9]
;W[fn]C[W10]MN[10]

;
)
