(;GM[1]FF[4]SZ[19]
GN[variation: black dies.]
PC[http://senseis.xmp.net/?GokyoShumyoSection3Problem6/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?GokyoShumyoSection3Problem6/Attempts

variation: black dies.]
PL[W]

AB[ca][db][eb][bc][cc]
AW[fb][dc][ec][fc][bd][cd]

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

;
)
