(;GM[1]FF[4]SZ[19]
GN[Black first: Solution]
PC[http://senseis.xmp.net/?KyuExercise121/Solution]AP[GoWiki:2009]
DT[2009-05-23]
C[Diagram from http://senseis.xmp.net/?KyuExercise121/Solution

Black first: Solution]
PL[B]

AB[jn][io][ko][ip][jp][kp][iq][kq][hr][lr][mr]
AW[im][jm][km][hn][ln][go][mo][fq][gq][hq][lq][mq][nq][jr][nr]

;B[kr]C[B1]MN[1]
;W[ir]C[W2]MN[2]
;B[ks]C[B3]MN[3]
;W[ms]C[W4]MN[4]
;B[is]C[B5]MN[5]
;W[gr]C[W6]MN[6]
;B[hs]C[B7]MN[7]

;
)
