(;GM[1]FF[4]SZ[13]
GN[Black uses the weakness]
PC[http://senseis.xmp.net/?StoneEscape1]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?StoneEscape1

Black uses the weakness]
PL[B]

AB[gg]
AW[ff][hf][fh][hh]

;B[gf]C[B1]MN[1]
;W[ge]C[W2]MN[2]
;B[fg]C[B3]MN[3]
;W[eg]C[W4]MN[4]
;B[fe]C[B5]MN[5]

;
)
