(;GM[1]FF[4]SZ[19]
GN[Approach ko]
PC[http://senseis.xmp.net/?GokyoShumyoSection1Problem46/Failure]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection1Problem46/Failure

Approach ko]
PL[W]

AB[ap][bp][cp][dp][gp][fq][gr][bs]
AW[aq][bq][cq][er]
LB[gs:a]

;W[br]C[W1]MN[1]
;B[cs]C[B2]MN[2]
;W[dq]C[W3]MN[3]
;B[es]C[B4]MN[4]
;W[fs]C[W5]MN[5]
;B[ds]C[B6]MN[6]
;W[fr]C[W7]MN[7]
;B[eq]C[B8]MN[8]
;W[dr]C[W9]MN[9]
;B[ar]C[B10]MN[10]

;LB[gs:a]
)
