(;GM[1]FF[4]SZ[19]
GN[Solution]
PC[http://senseis.xmp.net/?BeginnerExercise42/Solution]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BeginnerExercise42/Solution

Solution]
PL[W]

AB[qq][rq][pr][rr][rs]
AW[po][qp][rp][oq][pq][nr][qr]
CR[pr][qr]

;W[ps]C[W1]MN[1]

;CR[pr][qr]
)
