Search found 411 matches
- Sun Sep 24, 2017 9:55 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: The Peace-Chess Challenge
- Replies: 45
- Views: 9914
Re: The Peace-Chess Challenge
Total number of unions increases could be 'progress' - a piece can only be released from a union if another piece enters a union, so number of unions cannot go down. in the case that all non-kings are in union, the game must be drawn. 'Progress' is what brings you closer to a win. If you get closer...
- Sun Sep 24, 2017 2:30 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: The Peace-Chess Challenge
- Replies: 45
- Views: 9914
Re: The Peace-Chess Challenge
Since the kings can't initiate a union, and the only way pieces can leave a union is by another piece initiating a union, only kings in non-union has to be a draw - there's just no way to hug a king anymore.
- Sun Sep 24, 2017 2:09 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: The Peace-Chess Challenge
- Replies: 45
- Views: 9914
Re: The Peace-Chess Challenge
Regarding repetition though, i don't know that 3-fold repetition is draw is going to work out ok. i.e. imagine the situation where side A threatens to win by moving queen-hugging-bishop into position where it can be chained in for a win. and side B of course moves it away. Obviously if A's position ...
- Sun Sep 24, 2017 2:00 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: The Peace-Chess Challenge
- Replies: 45
- Views: 9914
Re: The Peace-Chess Challenge
Regarding an evaluation - certain pairs of unions are probably advantageous to one side vs another - i.e. having your queen unioned to a lesser piece or pawn is a penalty as it greatly detracts your ability to set off a winning capture chain that you don't have sole control of your most powerful pie...
- Sun Sep 24, 2017 1:53 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: The Peace-Chess Challenge
- Replies: 45
- Views: 9914
Re: The Peace-Chess Challenge
Total number of unions increases could be 'progress' - a piece can only be released from a union if another piece enters a union, so number of unions cannot go down. in the case that all non-kings are in union, the game must be drawn.
- Tue Sep 19, 2017 7:09 pm
- Forum: Computer Chess Club: General Topics
- Topic: Where's the joy in writing a chess engine?
- Replies: 44
- Views: 13116
Re: Where's the joy in writing a chess engine?
A few things: 1) A chess engine is a bit more algorithm-oriented than most hobby programming projects you might take on. It makes it a bit more enjoyable for people who like thinking about such things than say... a user interface for anything which is a lot of design work and some very tedious progr...
- Tue Sep 05, 2017 10:20 am
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Evaluation as a composite
- Replies: 26
- Views: 6303
Re: Evaluation as a composite
Nothing wrong with partitioning a long function into distinct subfunctions and then call them in sequence in the main eval. Some would even call it a good practice to do so - but what you linked has nothing to do with that.
- Mon Sep 04, 2017 11:50 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Evaluation as a composite
- Replies: 26
- Views: 6303
Re: Evaluation as a composite
While I'm probably going to regret replying to this... The main issue is you're taking a solution and going looking for a problem. What do you find unmanageable about your current evaluation and how does this address it to make it more manageable? Nothing about a tree structure with a variety of nod...
- Wed Aug 30, 2017 11:27 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Ab-initio evaluation tuning
- Replies: 51
- Views: 11011
Re: Ab-initio evaluation tuning
Stockfish apparently does this too, per the comment "Second-degree polynomial material imbalance by Tord Romstad." Could someone please explain how this works and/or point me to something that would? Thanks. I think Tord's inspiration came from the bishop pair bonus and the various imbalance/scalin...
- Mon Jul 31, 2017 6:59 pm
- Forum: Computer Chess Club: General Topics
- Topic: Will you use hash saving?
- Replies: 8
- Views: 2636
Re: Will you use hash saving?
A hash table can contain several millions of entries. So a pgn file seems not to be a good container for it. Also there are a lot of other drawbacks. Pgn databases can also contain millions of games and even more positions. But I was thinking mainly to save only parts of the hash (by material "slic...