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

Basic Situation]
PL[B]

AB[fa][fb][ac][ec][fc][ad][bd][cd][dd]
AW[ca][da][ab][eb][bc][cc][dc]


;
)
