Probably bug in undo

[dsmic]

I did not track down the details, but I get sometimes invalid move after undo and on kgs it is playing bad in case the opponent undos some moves.

I will add more info as soon as I understand the problem:)

[Francois van Niekerk]

You can disable undo on KGS with "undo=f" I think. Also remember that after an undo, the tree is discarded, so it is quite possible that this is why the strength is decreasing. Can you upload a GTP file that reproduces the problem?

[Francois van Niekerk]

I'm guessing this hasn't come up again, so I will close it.

[Francois van Niekerk]

Detlef reports that the issue is still present. He will provide more details at some stage