(;GM[1]FF[4]SZ[19]
GN[Extend (Ko)]
PC[https://senseis.xmp.net/?44PointLowApproachLowExtensionContact/Diagrams]AP[GoWiki:2009]
DT[2021-08-10]
C[Diagram from https://senseis.xmp.net/?44PointLowApproachLowExtensionContact/Diagrams

Extend (Ko)]
PL[B]

AB[cc][dd][cf]
AW[cb][dc][fc]

;B[bc]C[B1]MN[1]
;W[ed]C[W2]MN[2]
;B[db]C[B3]MN[3]
;W[eb]C[W4]MN[4]

;
)
