(;GM[1]FF[4]SZ[19]
GN[Clamp]
PC[http://senseis.xmp.net/?12PointFunProblem/Attempts]AP[GoWiki:2009]
DT[2009-04-22]
C[Diagram from http://senseis.xmp.net/?12PointFunProblem/Attempts

Clamp]
PL[W]

AB[db][bc][cc]
AW[ab][bb][cb]

;W[eb]C[W1]MN[1]

;
)
