Hello there,

I plan to run a tournament based only on scratch engines...

So, which are those chess engines written especially from scratch ?
And how we can be sure that they are really started from scratch ?

Btw, so far here are the bellow ones which are scratch engines:
Amateur 2.82
Anatoli 0.35k
Awesome 1.73
Maverick 0.51
Murka 3
Smash 1.03
Supra 18
Tornado 4.88

Source:
http://chessprogramming.wikispaces.com/search/view/scratch

Thanks in advance,
Sedat