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

The attack]
PL[W]

AB[pd][qg][po][pq]
AW[dd][pj][dp]
CR[pj]
LB[qm:a]

;W[ql]C[W1]MN[1]
;B[ol]C[B2]MN[2]
;W[ro]C[W3]MN[3]
;B[ip]C[B4]MN[4]

;CR[pj]
LB[qm:a]
)
