(;GM[1]FF[4]SZ[19]
GN[The clamp]
PC[http://senseis.xmp.net/?4473Enclosure33Invasion]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?4473Enclosure33Invasion

The clamp]
PL[W]

AB[eb][ec][gc][cd][dd][be]
AW[bc][cc][dc][bd]

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

;
)
