(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[http://senseis.xmp.net/?BeginnerExercise69/Solution]AP[GoWiki:2009]
DT[2010-06-19]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise69/Solution

Solution]
PL[W]

AB[ao][bo][co][ap][cp][cq][br][cr][as]
AW[an][bn][cn][dn][do][bp][dp][dq][dr][cs]
LB[aq:c][bq:d]

;W[ds]C[W1]MN[1]
;B[bs]C[B2]MN[2]

;LB[aq:c][bq:d]
)
