(;GM[1]FF[4]SZ[19]
GN[The correct shape]
PC[http://senseis.xmp.net/?SolutionToShapeProblem3]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?SolutionToShapeProblem3

The correct shape]
PL[W]

AB[dc][ec][ed][ee][df]
AW[cb][cc][dd][de]
LB[ef:a]

;W[bf]C[W1]MN[1]
;B[bg]C[B2]MN[2]
;W[be]C[W3]MN[3]
;B[cg]C[B4]MN[4]

;LB[ef:a]
)
