(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[http://senseis.xmp.net/?BeginnerExercise335/Solution]AP[GoWiki:2009]
DT[2016-05-14]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise335/Solution

Solution]
PL[B]

AB[nb][ob][pb][rb][sb][oc][qc][rc][od][qd][oe][pf][sf][pg][nh][ph][pi][qi][ri][si]
AW[la][na][pa][ra][kb][mb][lc][nc][pc][sc][nd][pd][rd][sd][ne][pe][qe][re][of][qf][mg][qg][qh][rh][sh]

;B[qb]C[B1]MN[1]
;W[nf]C[W2]MN[2]
;B[qa]C[B3]MN[3]

;
)
