(;GM[1]FF[4]SZ[19]
GN[Double ko death]
PC[http://senseis.xmp.net/?TsumegoFromGames42/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?TsumegoFromGames42/Solution

Double ko death]
PL[W]

AB[cd][ce][af][cf][bg][bh]
AW[cc][dc][ec][de][ee][cg][dg][eg][ch][bi][ci]
LB[ba:a][ac:b]

;W[be]C[W1]MN[1]
;B[bc]C[B2]MN[2]
;W[bb]C[W3]MN[3]
;B[ab]C[B4]MN[4]
;W[ca]C[W5]MN[5]
;B[ah]C[B6]MN[6]
;W[bd]C[W7]MN[7]
;B[ad]C[B8]MN[8]
;W[aa]C[W9]MN[9]

;LB[ba:a][ac:b]
)
