(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[http://senseis.xmp.net/?BeginnerExercise334/Solution]AP[GoWiki:2009]
DT[2016-05-14]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise334/Solution

Solution]
PL[W]

AB[do][go][cp][fp][hp][ip][bq][gq][iq][kq][br][er][jr][ds][ks]
AW[dq][eq][fq][hq][cr][fr][gr][hr][ir][hs][js]

;W[fs]C[W1]MN[1]
;B[cs]C[B2]MN[2]
;W[dr]C[W3]MN[3]

;
)
