(;GM[1]FF[4]SZ[4:3]
GN[]
PC[http://senseis.xmp.net/?ConstructionProblem7/Attempts]AP[GoWiki:2009]
DT[2014-05-27]
C[Diagram from http://senseis.xmp.net/?ConstructionProblem7/Attempts

]
PL[B]

AB[aa][cb][db][cc]
AW[da][ab][bb][bc]

;B[ba]C[B1]MN[1]
;W[ca]C[W2]MN[2]

;
)
