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

4-4 point one-point enclosure]
PL[B]

AB[dd][fd]


;
)
