(;GM[1]FF[4]SZ[19]
GN[A ladder countered by a ladder-breaker]
PC[http://senseis.xmp.net/?ElementaryCourse]AP[GoWiki:2009]
DT[2009-10-12]
C[Diagram from http://senseis.xmp.net/?ElementaryCourse

A ladder countered by a ladder-breaker]
PL[B]

AB[ec][dd][de]
AW[ed]
SQ[ed]
LB[ee:a]

;B[fd]C[B1]MN[1]
;W[pp]C[W2]MN[2]

;SQ[ed]
LB[ee:a]
)
