(;GM[1]FF[4]SZ[19]
GN[]
PC[http://senseis.xmp.net/?XuanxuanQijingProblem209/Solution]AP[GoWiki:2009]
DT[2013-04-01]
C[Diagram from http://senseis.xmp.net/?XuanxuanQijingProblem209/Solution

]
PL[B]

AB[cp][dp][cq][dq]
AW[ar][br][bs]

;W[er]C[W2]MN[2]
;B[dr]C[B3]MN[3]
;W[ds]C[W4]MN[4]

;
)
