(;GM[1]FF[4]SZ[19]
GN[Black's attack]
PC[http://senseis.xmp.net/?BQM229]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BQM229

Black's attack]
PL[B]

AB[bp][cp][dq][eq][gq][fr]
AW[bq][cq][br][dr][er]

;B[cs]C[B1]MN[1]
;W[bs]C[W2]MN[2]
;B[es]C[B3]MN[3]
;W[cr]C[W4]MN[4]

;
)
