(;GM[1]FF[4]SZ[19]
GN[Attack 'a' (7 at marked)]
PC[http://senseis.xmp.net/?SomeEndgameProblem9/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?SomeEndgameProblem9/Attempts

Attack 'a' (7 at marked)]
PL[W]

AB[eb][fb][dc][fc][hc][ad][cd][gd][be][ce][he][cf][hf]
AW[ec][ed][fd][ae][de][ge][af][bf][df][gf][bg][cg][dg][gg]
CR[ad]

;W[bc]C[W1]MN[1]
;B[cc]C[B2]MN[2]
;W[bd]C[W3]MN[3]
;B[bb]C[B4]MN[4]
;W[ac]C[W5]MN[5]
;B[ab]C[B6]MN[6]

;CR[ad]
)
