(;GM[1]FF[4]SZ[9]
GN[Mistake - Black loses]
PC[http://senseis.xmp.net/?SomeEndgameProblem8/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?SomeEndgameProblem8/Solution

Mistake - Black loses]
PL[B]

AB[ib][ec][fc][ic][ed][id][ae][be][ce][ee][he][df][ef][gf][if][eg][gg][eh][fh]
AW[ha][ia][eb][fb][hb][dc][gc][hc][ad][bd][cd][dd][fd][gd][hd][de][fe][ge][ff][fg]

;B[ie]C[B1]MN[1]
;W[ig]C[W2]MN[2]
;B[hf]C[B3]MN[3]
;W[gh]C[W4]MN[4]

;
)
