(;GM[1]FF[4]SZ[19]
GN[White seals the corner]
PC[http://senseis.xmp.net/?3454Enclosure/Technique3]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?3454Enclosure/Technique3

White seals the corner]
PL[B]

AB[ba][ca][da][ea][db][fb][ec][bd][cd][ed][be][de][bf][df]
AW[cb][bc][cc][dc][fc][dd][fd][ce][ee][fe][cf][cg]

;B[eb]C[B1]MN[1]
;W[dg]C[W2]MN[2]
;B[ef]C[B3]MN[3]
;W[fg]C[W4]MN[4]

;
)
