Search found 6917 matches
- Fri Dec 25, 2020 5:28 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Are Aspiration Windows Worthless?
- Replies: 40
- Views: 2624
Re: Are Aspiration Windows Worthless?
I just run some experimentations that strongly disagree with your findings. The aspiration windows algorithm is definitely worth on my engines. I got the following results, with self play using SPRT stop condition: - Dumb : +54.2 +/- 7.3 Elo (834 games) - Amoeba : +131.6 +/- 12.2 Elo (260 games) Be...
- Mon Dec 21, 2020 1:16 pm
- Forum: Computer Chess Club: Tournaments and Matches
- Topic: ShashChess 15.0 64-bit 4CPU Gauntlet for CCRL 40/15
- Replies: 5
- Views: 483
Re: ShashChess 15.0 64-bit 4CPU Gauntlet for CCRL 40/15
https://i.postimg.cc/50JQXXBy/Shash-Chess-15-0-64-bit-4-CPU-Gauntlet.jpg PGN - http://kirill-kryukov.com/chess/discussion-board/download/file.php?id=47568 I see 0 losses for snashchess 4 cpu. Is it possible to beat it in CCRL? Is there a possibility to change parameters for the opponents to make th...
- Mon Dec 21, 2020 7:36 am
- Forum: Computer Chess Club: General Topics
- Topic: Nemorino is surprising everybody in League 1
- Replies: 17
- Views: 2114
Re: Nemorino is surprising everybody in League 1
Here is a position in which most human GMs will probably move its White King TO b6 and later promote, here comes the Big Surprise Nemorino after 4 minutes promote to Queen and the GUI resigned for Ethereal after taking the Queen thinking for 5 seconds :shock: https://tcec-chess.com/live.html#div=l1...
- Wed Dec 16, 2020 5:15 am
- Forum: Computer Chess Club: General Topics
- Topic: An idea for new Handicap games for dragon
- Replies: 119
- Views: 8137
Re: An idea for new Handicap games for dragon
In the meantime, right now Komodo Dragon is leading at odds game at CCC. Really nice ! What are the Odds settings and where can I watch this CCC match ? https://www.chess.com/computer-chess-championship. It is an 8 engine double round robin event at ten different handicaps, starting with queen odds...
- Mon Dec 14, 2020 8:42 am
- Forum: Computer Chess Club: General Topics
- Topic: what is the longest tablebase mate with special properties?
- Replies: 16
- Views: 1660
Re: what is the longest tablebase mate with special properties?
This is probably mate in 11 with a single path for the winner.
The loser has a lot of option and did not calculate complexity for it.
It is not a single path to win except the first move.
- Mon Dec 14, 2020 8:21 am
- Forum: Computer Chess Club: General Topics
- Topic: what is the longest tablebase mate with special properties?
- Replies: 16
- Views: 1660
Re: what is the longest tablebase mate with special properties?
Examples: 2k5/8/2K5/2R5/2p5/8/8/8 w - - 0 1 This position is a mate in 3 with a single path for white for the shortest mate. complexity of it is 2 because there are 2 ways for black to respond in the first move. This is not actually a single path for White. If Black responds to 1.Rxc4 with 1... Kb8...
- Mon Dec 14, 2020 8:16 am
- Forum: Computer Chess Club: General Topics
- Topic: what is the longest tablebase mate with special properties?
- Replies: 16
- Views: 1660
Re: what is the longest tablebase mate with special properties?
A better fix
single path to mate in 9.
No single path to win the game because 1.Qg1+ also win the game
single path to mate in 9.
No single path to win the game because 1.Qg1+ also win the game
- Mon Dec 14, 2020 8:11 am
- Forum: Computer Chess Club: General Topics
- Topic: what is the longest tablebase mate with special properties?
- Replies: 16
- Views: 1660
Re: what is the longest tablebase mate with special properties?
r6R/k7/p2K4/P7/8/8/7P/8 w - - 0 1 This is mate in 9, with a single path: 1.Rxa8+ Kxa8 2. Kc7 Ka7 3. h3! Ka8 4. h4 Ka7 5. h5 Ka8 6. h6 Ka7 7. h7 Ka8 8. h8=Q+ Ka7 9. Qb8# (1... Kb7 allows mate in 6, so the complexity is only 1.) Strictly, though, the tablebases don't show at the start that 1.Rxa8+ is...
- Sun Dec 13, 2020 6:26 am
- Forum: Computer Chess Club: General Topics
- Topic: what is the longest tablebase mate with special properties?
- Replies: 16
- Views: 1660
Re: what is the longest tablebase mate with special properties?
No
I did not write a program to do it.
My point was that it is possible to do it.
I did not write a program to do it.
My point was that it is possible to do it.
- Sun Dec 13, 2020 4:40 am
- Forum: Computer Chess Club: General Topics
- Topic: what is the longest tablebase mate with special properties?
- Replies: 16
- Views: 1660
what is the longest tablebase mate with special properties?
I define that a mate is with a single path for the winner if the winner has only one move for the shortest mate regardless of the opponent choice. I define that a win is with a single path for the winner if the winner has only one move to win the game. I define complexity of mate as the number of po...