(;GM[1]FF[4]SZ[19]
GN[Another ko]
PC[http://senseis.xmp.net/?GokyoShumyoSection4Problem23/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection4Problem23/Attempts

Another ko]
PL[W]

AB[db][cc][dc][cd][de][df][cg]
AW[eb][ec][dd][ed][be][ce]

;W[bb]C[W1]MN[1]
;B[bc]C[B2]MN[2]
;W[ac]C[W3]MN[3]
;B[ab]C[B4]MN[4]
;W[ad]C[W5]MN[5]
;B[ba]C[B6]MN[6]
;W[aa]C[W7]MN[7]

;
)
