(;GM[1]FF[4]SZ[19]
GN[Ko?]
PC[http://senseis.xmp.net/?BQM506]AP[GoWiki:2009]
DT[2010-02-24]
C[Diagram from http://senseis.xmp.net/?BQM506

Ko?]
PL[W]

AB[ea][cb][db][cc][bd][be]
AW[eb][fb][dc][cd][dd][bf][cf][df]

;W[ac]C[W1]MN[1]
;B[ab]C[B2]MN[2]
;W[bb]C[W3]MN[3]
;B[ba]C[B4]MN[4]

;
)
