(;GM[1]FF[4]SZ[19]
GN[White to move (W1 is double sente, W3 makes a ko)]
PC[http://senseis.xmp.net/?GokyoSeimyoVolume3Problem9/Attempts]AP[GoWiki:2009]
DT[2009-04-24]
C[Diagram from http://senseis.xmp.net/?GokyoSeimyoVolume3Problem9/Attempts

White to move (W1 is double sente, W3 makes a ko)]
PL[W]

AB[oa][pa][ob][qb][qc][rc][sd][re][qf][qg]
AW[nb][pb][rb][mc][oc][pc][qd][rd][pe][pf]
LB[qa:a][sc:a]

;W[qe]C[W1]MN[1]
;B[rf]C[B2]MN[2]
;W[sa]C[W3]MN[3]

;LB[qa:a][sc:a]
)
