(;GM[1]FF[4]SZ[19]
GN[refutation]
PC[http://senseis.xmp.net/?GokyoShumyoSection5Problem5/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection5Problem5/Attempts

refutation]
PL[W]

AB[bb][eb][bc][cc][fc][ad][be][de][ee][bf][bg][dg][ch][eh]
AW[cb][db][dc][bd][cd][dd][ce][cf][cg]

;W[ae]C[W1]MN[1]
;B[af]C[B2]MN[2]
;W[ba]C[W3]MN[3]
;B[ab]C[B4]MN[4]
;W[ca]C[W5]MN[5]
;B[bh]C[B6]MN[6]
;W[aa]C[W7]MN[7]
;B[ac]C[B8]MN[8]

;
)
