(;GM[1]FF[4]SZ[19]
GN[Black to play]
PC[http://senseis.xmp.net/?ShapeProblem3]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?ShapeProblem3

Black to play]
PL[B]

AB[dc][ec][ed][ee][df]
AW[cb][cc][dd][de][ef]
CR[ef]

;B[be]C[B1]MN[1]
;W[cf]C[W2]MN[2]
;B[ce]C[B3]MN[3]
;W[cd]C[W4]MN[4]
;B[dg]C[B5]MN[5]
;W[bf]C[W6]MN[6]

;CR[ef]
)
