(;GM[1]FF[4]SZ[19]
GN[Black to kill]
PC[http://senseis.xmp.net/?GokyoShumyoSection2Problem55/Attempts]AP[GoWiki:2009]
DT[2010-07-27]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection2Problem55/Attempts

Black to kill]
PL[B]

AB[gb][dc][fc][dd][ed][gd][ce][cf][ch]
AW[db][eb][cc][ec][cd]

;B[bb]C[B1]MN[1]
;W[bc]C[W2]MN[2]
;B[cb]C[B3]MN[3]
;W[ab]C[W4]MN[4]
;B[ba]C[B5]MN[5]
;W[ac]C[W6]MN[6]
;B[ad]C[B7]MN[7]
;W[ae]C[W8]MN[8]
;B[fb]C[B9]MN[9]

;
)
