(;GM[1]FF[4]SZ[19]
GN[Try to kill Black's group]
PC[http://senseis.xmp.net/?OD1PJuly26Problem/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?OD1PJuly26Problem/Solution

Try to kill Black's group]
PL[W]

AB[dp][ep][cq][eq][dr][fr]
AW[cn][co][eo][fo][fp][hp][bq][iq][br][hr]

;W[es]C[W1]MN[1]
;B[fs]C[B2]MN[2]
;W[ds]C[W3]MN[3]
;B[cr]C[B4]MN[4]
;W[cs]C[W5]MN[5]
;B[bs]C[B6]MN[6]
;W[as]C[W7]MN[7]

;
)
