(;GM[1]FF[4]SZ[19]
GN[Alternately it becomes a [ladder\], probably with the same [Oiotoshi\] at the end.]
PC[http://senseis.xmp.net/?KyuExercise63/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?KyuExercise63/Attempts

Alternately it becomes a [ladder\], probably with the same [Oiotoshi\] at the end.]
PL[W]

AB[cf][gf][hf][cg][fg][ig][ch][eh][fh][ih][jh][ci][di][hi][ji][bj][cj][dj][hj][ij][jj][ek][gk][kk][fl][gl][ll][cm][hm][im][km][kn]
AW[bf][bg][bh][gh][hh][bi][ei][fi][gi][aj][ej][gj][bk][ck][fk][hk][hl][il][jl][kl][gm][jm][gn]

;W[el]C[W1]MN[1]
;B[fm]C[B2]MN[2]
;W[em]C[W3]MN[3]
;B[fn]C[B4]MN[4]
;W[fo]C[W5]MN[5]
;B[en]C[B6]MN[6]
;W[dn]C[W7]MN[7]
;B[eo]C[B8]MN[8]
;W[ep]C[W9]MN[9]

;
)
