(;GM[1]FF[4]SZ[19]
GN[Counting problem.]
PC[http://senseis.xmp.net/?SnapbackProblem15]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?SnapbackProblem15

Counting problem.]
PL[B]

AB[aa][ca][fa][ab][db][eb][fb][bc][cc]
AW[gb][ac][dc][fc][hc][ad][bd][dd][gd][ce][bf]


;
)
