(;GM[1]FF[4]SZ[8:3]
GN[Black first]
PC[http://senseis.xmp.net/?DifferenceGame/Discussion]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?DifferenceGame/Discussion

Black first]
PL[B]

AB[ca]
AW[hb]
CR[ca][hb]

;B[bb]C[B1]MN[1]
;W[gb]C[W2]MN[2]

;CR[ca][hb]
)
