(;GM[1]FF[4]SZ[19]
GN[Zero]
PC[http://senseis.xmp.net/?AlphaGoJoseki/DoubleApproachReaction]AP[GoWiki:2009]
DT[2017-10-25]
C[Diagram from http://senseis.xmp.net/?AlphaGoJoseki/DoubleApproachReaction

Zero]
PL[W]

AB[dc][fc][gd][cf]
AW[dd][fd][fe]
LB[cb:a][cg:b]

;W[cc]C[W1]MN[1]
;B[ec]C[B2]MN[2]
;W[df]C[W3]MN[3]

;LB[cb:a][cg:b]
)
