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

White's ladder]
PL[B]

AB[ic][dd][jd][pd]
AW[ib][jc]

;B[jb]C[B1]MN[1]
;W[kc]C[W2]MN[2]
;B[hb]C[B3]MN[3]
;W[id]C[W4]MN[4]
;B[hc]C[B5]MN[5]
;W[je]C[W6]MN[6]

;
)
