(;GM[1]FF[4]SZ[19]
GN[Black takes vital point]
PC[http://senseis.xmp.net/?KyuExercise49/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?KyuExercise49/Attempts

Black takes vital point]
PL[B]

AB[fa][db][eb][bc][dc]
AW[fb][hb][ec][fc][bd][cd][dd][cf][ch]

;B[ba]C[B1]MN[1]
;W[ab]C[W2]MN[2]
;B[ac]C[B3]MN[3]
;W[ea]C[W4]MN[4]
;B[da]C[B5]MN[5]
;W[cb]C[W6]MN[6]
;B[cc]C[B7]MN[7]
;W[bb]C[W8]MN[8]

;
)
