(;GM[1]FF[4]SZ[19]
GN[Ladder Exercise 13]
PC[http://senseis.xmp.net/?LadderExercise13/Attempts]AP[GoWiki:2009]
DT[2016-01-06]
C[Diagram from http://senseis.xmp.net/?LadderExercise13/Attempts

Ladder Exercise 13]
PL[B]

AB[qb][nc][pc][rc][rd][me][nf][of]
AW[kb][qc][md][nd][qd][ne]

;B[pe]C[B1]MN[1]
;W[qe]C[W2]MN[2]
;B[qf]C[B3]MN[3]
;W[re]C[W4]MN[4]
;B[rf]C[B5]MN[5]
;W[se]C[W6]MN[6]
;B[pd]C[B7]MN[7]

;
)
