(;GM[1]FF[4]SZ[19]
GN[Key point]
PC[http://senseis.xmp.net/?LowInvasionOfMixedThreeSpaceExtension]AP[GoWiki:2009]
DT[2014-04-26]
C[Diagram from http://senseis.xmp.net/?LowInvasionOfMixedThreeSpaceExtension

Key point]
PL[W]

AB[kp][gq]

;W[iq]C[W1]MN[1]
;B[kr]C[B2]MN[2]

;
)
