(;GM[1]FF[4]SZ[19]
GN[Revised problem]
PC[http://senseis.xmp.net/?LadderExercise13/Attempts]AP[GoWiki:2009]
DT[2018-03-06]
C[Diagram from http://senseis.xmp.net/?LadderExercise13/Attempts

Revised problem]
PL[B]

AB[qb][nc][pc][rc][rd][qe][nf][of]
AW[qc][nd][pd][qd][ne]


;
)
