(;GM[1]FF[4]SZ[19]
GN[double ko: white is alive]
PC[http://senseis.xmp.net/?BQM2]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BQM2

double ko: white is alive]
PL[W]

AB[ba][da][ga][cb][gb][dc][fc][gc][bd][cd][dd][ed]
AW[aa][fa][db][eb][fb][ac][bc][cc]

;W[bb]C[W1]MN[1]
;B[ab]C[B2]MN[2]
;W[ca]C[W3]MN[3]

;
)
