(;GM[1]FF[4]SZ[19]
GN[What about this for 3?]
PC[http://senseis.xmp.net/?BeginnerExercise23/Solution]AP[GoWiki:2009]
DT[2011-04-09]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise23/Solution

What about this for 3?]
PL[B]

AB[in][jn][kn][go][ho][lo][mo][gq][hq][lq][mq][gr][mr][gs][ms]
AW[jo][ip][kp][iq][jq][kq][hr][jr][lr][hs][ls]
LB[ko:a][kr:b]

;B[js]C[B1]MN[1]
;W[ir]C[W2]MN[2]
;B[io]C[B3]MN[3]

;LB[ko:a][kr:b]
)
