(;GM[1]FF[4]SZ[19]
GN[Solution?]
PC[http://senseis.xmp.net/?BeginnerExercise55/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise55/Solution

Solution?]
PL[B]

AB[sa][ob][pb][sb][qc][rc]
AW[nb][nc][oc][pc][qd][rd][sd]
LB[pa:a]

;B[qa]C[B1]MN[1]
;W[rb]C[W2]MN[2]
;B[oa]C[B3]MN[3]
;W[qb]C[W4]MN[4]

;LB[pa:a]
)
