We played the Marshall Counter Attack in the Ruy Lopez every game.
Initially the machine played poorly (it had the book turned off),
but it improved its play each game. The was a tremendous benmefit
for me: I got to learn through experience why certain things were
good or bad.
It wasn't necessary for me to even play the best moves for the
machine to improve its play in a subsequent game. The machine
will be looking at all my possibilities even if I don't play
them myself. Of course, if I play the best, the machine's
algorithym will work better.
--Mike Valvo