(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[http://senseis.xmp.net/?GokyoSeimyoVolume3Problem133/Solution]AP[GoWiki:2009]
DT[2014-04-30]
C[Diagram from http://senseis.xmp.net/?GokyoSeimyoVolume3Problem133/Solution

Solution]
PL[B]

AB[mc][nc][oc][pd][qd][kf][lf][mg][pg][qg][nh][oh][qi]
AW[lc][ld][nd][le][oe][qe][mf][qf][ng][og]

;B[of]C[B1]MN[1]
;W[pe]C[W2]MN[2]
;B[ne]C[B3]MN[3]

;
)
