(;GM[1]FF[4]SZ[19]
GN[What is W1 for you?]
PC[http://senseis.xmp.net/?posting=8568]AP[GoWiki:2009]
DT[2011-06-07]
C[Diagram from http://senseis.xmp.net/?posting=8568

What is W1 for you?]
PL[W]

AB[dc][ec][cd][fe]
AW[fc][ed][gd]

;W[fd]C[W1]MN[1]

;
)
