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

Block of 4]
PL[W]

AB[gg][hg][ig][jg][kg][lg][gh][lh][gi][li][gj][lj][gk][lk][gl][hl][il][jl][kl][ll]
AW[hh][ih][jh][kh][hi][ki][hj][kj][hk][ik][jk][kk]


;
)
