(;GM[1]FF[4]SZ[19]
GN[Forcing exchange]
PC[http://senseis.xmp.net/?3445Enclosure]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?3445Enclosure

Forcing exchange]
PL[W]

AB[dc][ed]

;W[cd]C[W1]MN[1]
;B[cc]C[B2]MN[2]

;
)
