(;GM[1]FF[4]SZ[19]
GN[Ko (Black plays)]
PC[http://senseis.xmp.net/?OD1PAug3Problem/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?OD1PAug3Problem/Solution

Ko (Black plays)]
PL[W]

AB[dm][em][dn][go][ho][io][jo][cp][dp][jp][cq][hq][br][dr][fr][gr][cs]
AW[fm][en][fn][hn][in][jn][ko][lo][ep][dq][fq][kq][lq][er][ir][ds][fs]

;W[es]C[W1]MN[1]
;B[eq]C[B2]MN[2]

;
)
