(;GM[1]FF[4]SZ[19]
GN[3-3 Invasion]
PC[https://senseis.xmp.net/?44PointLowApproachLowExtension/Diagrams]AP[GoWiki:2009]
DT[2021-09-07]
C[Diagram from https://senseis.xmp.net/?44PointLowApproachLowExtension/Diagrams

3-3 Invasion]
PL[B]

AB[dd]
AW[fc]

;B[cf]C[B1]MN[1]
;W[cc]C[W2]MN[2]
;B[dc]C[B3]MN[3]
;W[db]C[W4]MN[4]

;
)
