(;GM[1]FF[4]SZ[19]
GN[Black makes territory mistake]
PC[http://senseis.xmp.net/?TerritoryAndAreaScoring]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?TerritoryAndAreaScoring

Black makes territory mistake]
PL[B]

AB[ka][kb][kc][id][jd][kd]
AW[ha][hb][ib][jb][hc][hd]

;B[jc]C[B1]MN[1]
;W[ja]C[W2]MN[2]
;B[ic]C[B3]MN[3]

;
)
