50 moves rule

does lichess includes the 50 moves rule ?

Thank you

Yes, it does.

It didn't in my game at http://en.lichess.org/analyse/8gkdjz36 (I'm glad it didn't, I wouldn't have been able to win otherwise).

at what move should lichess have declared the draw?

@MoralIntentions

The 50 moves rule isn't applicable in the game you linked to. Because there never was a 50 move sequence where neither a pawn was moved nor a capture happened.

*http://en.wikipedia.org/wiki/Fifty-move_rule

@jeykell

You're right, I forgot about the "pawn move"-rule because I don't think it has ever before been important in one of my games. I should have checked that, sorry.

I've seen in other games that Lichess does use the 50 moves rule, but what about this game?: http://en.lichess.org/analyse/7gv6cc9b

first capture at move 51 !
Maybe the 50 moves rule doesn't apply to a study from a position, but only to a real game (against human or computer)

I thought that as well, but then there's this game: http://en.lichess.org/analyse/nli0ia5p

This one is also weird because you can still checkmate with both white and black: http://en.lichess.org/analyse/us7ve37b

I think the engine looks for ply 101 to use the fifty-move rule. I don't mind the current rules the engine uses, I just like testing what it will do in certain situations.

@MoralIntentions

After rereading this thread, your examples and the code (I think is responsible for handling this stuff) I submitted the following three bug reports.

You can follow the progress on them under the following links

github.com/ornicar/scalachess/issues/2
github.com/ornicar/scalachess/issues/3
github.com/ornicar/scalachess/issues/4