(;GM[1]FF[4]SZ[19]
GN[Ladder]
PC[http://senseis.xmp.net/?BQM561]AP[GoWiki:2009]
DT[2012-02-12]
C[Diagram from http://senseis.xmp.net/?BQM561

Ladder]
PL[B]

AB[dd][df]
AW[cb][fc]
LB[cc:a]

;B[db]C[B1]MN[1]
;W[eb]C[W2]MN[2]
;B[dc]C[B3]MN[3]
;W[da]C[W4]MN[4]
;B[bc]C[B5]MN[5]
;W[ic]C[W6]MN[6]
;B[ci]C[B7]MN[7]

;LB[cc:a]
)
