(;GM[1]FF[4]SZ[19]
GN[Black's strongest attempt]
PC[http://senseis.xmp.net/?CrushTheKo]AP[GoWiki:2009]
DT[2010-07-15]
C[Diagram from http://senseis.xmp.net/?CrushTheKo

Black's strongest attempt]
PL[B]

AB[eb][gb][ec][bd][cd][dd][ed][bf]
AW[da][db][ac][bc][cc][dc]

;B[ba]C[B1]MN[1]
;W[bb]C[W2]MN[2]
;B[ca]C[B3]MN[3]
;W[aa]C[W4]MN[4]
;B[ab]C[B5]MN[5]

;
)
