(;GM[1]FF[4]SZ[19]
GN[]
PC[http://senseis.xmp.net/?ThicknessExample3]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?ThicknessExample3

]
PL[W]

AB[eb][dc][dd][ce][bf][cf][cg]
AW[db][cc][cd][be][de]
LB[df:a]

;W[cb]C[W1]MN[1]
;B[fc]C[B2]MN[2]
;W[ad]C[W3]MN[3]
;B[ee]C[B4]MN[4]

;LB[df:a]
)
