(;GM[1]FF[4]SZ[19]
GN[Typical 3-3 invasion]
PC[http://senseis.xmp.net/?Derek83]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?Derek83

Typical 3-3 invasion]
PL[B]

AB[pd]
AW[qc]
LB[lb:a][mc:b]

;B[qd]C[B1]MN[1]
;W[pc]C[W2]MN[2]
;B[oc]C[B3]MN[3]
;W[ob]C[W4]MN[4]
;B[nc]C[B5]MN[5]
;W[nb]C[W6]MN[6]
;B[mb]C[B7]MN[7]

;LB[lb:a][mc:b]
)
