(;GM[1]FF[4]SZ[19]
GN[White's threat]
PC[http://senseis.xmp.net/?EndgameTesuji9]AP[GoWiki:2009]
DT[2010-07-23]
C[Diagram from http://senseis.xmp.net/?EndgameTesuji9

White's threat]
PL[W]

AB[ba][ea][cb][db][fb][fc][dd][ed][fd]
AW[bb][eb][ac][cc][dc][ec][cd][ce][cg]
LB[fa:b][bc:a]

;W[da]C[W1]MN[1]
;B[ca]C[B2]MN[2]
;W[aa]C[W3]MN[3]
;B[ab]C[B4]MN[4]

;LB[fa:b][bc:a]
)
