(;GM[1]FF[4]SZ[19]
GN[Black to play and live by [oiotoshi\]. The solution is a ko.]
PC[http://senseis.xmp.net/?GokyoShumyoSection5Problem8/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection5Problem8/Attempts

Black to play and live by [oiotoshi\]. The solution is a ko.]
PL[B]

AB[fb][dc][ec][fc][gc][hc][ed][be][ce][de][dg]
AW[fa][db][eb][gb][hb][cc][ic][cd][dd][id][ee][fe]
CR[fa]

;B[cb]C[B1]MN[1]
;W[bb]C[W2]MN[2]
;B[bc]C[B3]MN[3]
;W[ca]C[W4]MN[4]
;B[bd]C[B5]MN[5]
;B[ea]C[B7]MN[7]
;W[ga]C[W8]MN[8]
;B[ab]C[B9]MN[9]
;W[ib]C[W10]MN[10]

;CR[fa]
)
