(;GM[1]FF[4]SZ[19]
GN[3-4 point diagonal attachment]
PC[https://senseis.xmp.net/?posting=11421]AP[GoWiki:2009]
DT[2019-08-31]
C[Diagram from https://senseis.xmp.net/?posting=11421

3-4 point diagonal attachment]
PL[B]

AB[cd]
AW[ec]

;B[dc]C[B1]MN[1]
;W[ed]C[W2]MN[2]
;B[cf]C[B3]MN[3]

;
)
