(;GM[1]FF[4]SZ[19]
GN[Black to win the capturing race]
PC[http://senseis.xmp.net/?GokyoShumyoSection4Problem7/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection4Problem7/Attempts

Black to win the capturing race]
PL[B]

AB[bb][bc][dc][cd][dd][de][cf][ef][bg][cg]
AW[ba][cb][db][cc][ec][fc][bd][be][ce][bf]

;B[ab]C[B1]MN[1]
;W[ae]C[W2]MN[2]
;B[ag]C[B3]MN[3]
;W[ac]C[W4]MN[4]

;
)
