(;GM[1]FF[4]SZ[19]
GN[An early choice involving a ladder]
PC[http://senseis.xmp.net/?BQM574]AP[GoWiki:2009]
DT[2013-01-15]
C[Diagram from http://senseis.xmp.net/?BQM574

An early choice involving a ladder]
PL[B]

AB[cd][pd][po][op][qp]
AW[pn][cp][pp][oq][pq]

;B[oo]C[B1]MN[1]
;W[qo]C[W2]MN[2]
;B[qn]C[B3]MN[3]
;W[ro]C[W4]MN[4]
;B[pm]C[B5]MN[5]

;
)
