(;GM[1]FF[4]SZ[19]
GN[Variation 1: the ladder]
PC[http://senseis.xmp.net/?BQM15]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?BQM15

Variation 1: the ladder]
PL[B]

AB[eb][ec][dd][pd][de]
AW[cc][dc][fc][cd][ed]
LB[ef:a]

;B[fb]C[B1]MN[1]
;W[gc]C[W2]MN[2]
;B[fd]C[B3]MN[3]
;W[ee]C[W4]MN[4]
;B[gd]C[B5]MN[5]
;W[df]C[W6]MN[6]
;B[hc]C[B7]MN[7]

;LB[ef:a]
)
