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

Early attack]
PL[B]

AB[pd][qg][po][pq]
AW[dd][pj][ql][dp]

;B[qn]C[B1]MN[1]
;W[jp]C[W2]MN[2]
;B[rj]C[B3]MN[3]
;W[mj]C[W4]MN[4]

;
)
