(;GM[1]FF[4]SZ[19]
GN[Mistake by black]
PC[http://senseis.xmp.net/?BeginnerExercise152/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise152/Solution

Mistake by black]
PL[W]

AB[ea][ia][db][gb][hb][ib][dc][fc][ed][fd]
AW[cb][eb][fb][jb][cc][gc][hc][ic][jc][dd][de][ee][ge][he]

;W[fa]C[W1]MN[1]
;B[da]C[B2]MN[2]
;W[ga]C[W3]MN[3]
;B[ec]C[B4]MN[4]
;W[ja]C[W5]MN[5]
;B[ha]C[B6]MN[6]

;
)
