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

Staircase formation]
PL[B]

AB[ji][ij]
AW[ki][jj]


;
)
