Search found 44 matches

by koedem
Sun Nov 04, 2018 11:46 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Swiss Tournament. Edition VII. Group F.
Replies: 29
Views: 1323

Re: Swiss Tournament. Edition VII. Group F.

Haha, yet another one, why win an exchange with winning position when you can also just play a dubious piece sacrifice. (to be fair it might have almost worked) :P EDIT: Wait I'm stupid, 30.Nxe8 Rxg2+ was a draw, the pieces sacrifice was correct, just the followup wasn't. On the plus side, it keeps ...
by koedem
Wed Oct 31, 2018 8:57 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Swiss Tournament. Edition VII. Group F.
Replies: 29
Views: 1323

Re: Swiss Tournament. Edition VII. Group F.

Eventually, games like these will force me to finally work on my engine's search and eval... :oops: Some games of Round 4: [Event "Swiss Tournament Ed.VII. Group F"] [Site "?"] [Date "2018.10.25"] [Round "4.24"] [White "Koedem 1.0.2 64-bit"] [Black "IQ23.003"] [Result "0-1"] [ECO "E04"] [TimeControl...
by koedem
Mon Oct 22, 2018 2:41 pm
Forum: Chess Players Forum
Topic: Glicko for Bughouse-like game
Replies: 0
Views: 264

Glicko for Bughouse-like game

I was wondering what a good rating system for a 2 vs 2 chess variant would be. I was thinking Glicko should be a good starting point so I modified it for this purpose. However there are a few problems with that: If everyone starts at 1500 and RD 350 or something like that, the RD goes down only very...
by koedem
Mon Jun 11, 2018 4:38 pm
Forum: Computer Chess Club: Tournaments and Matches
Topic: Swiss Tournament. Edition VI. Group F
Replies: 14
Views: 1203

Re: Swiss Tournament. Edition VI. Group F

Thanks for including my engine again. If you announce the next one a bit earlier I might get a new version ready. ;) And what a coincidence, next round my engine vs the TarraschToyEngine, which I used to roughly determine the strength of my first version. I've run tons of blitz games between them wi...
by koedem
Thu Apr 12, 2018 9:19 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 7-men Syzygy attempt
Replies: 549
Views: 77854

Re: 7-men Syzygy attempt

On an unrelated note, I was checking some other TB position and stumbled upon this position https://syzygy-tables.info/?fen=6Q1/5NR1/8/8/1q6/2k5/8/2K5_b_-_-_0_1 Why does the DTZ value of the position vs the one of the top move, down the top line look so weird? Am I missing something? The value I se...
by koedem
Thu Apr 12, 2018 5:11 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 7-men Syzygy attempt
Replies: 549
Views: 77854

Re: 7-men Syzygy attempt

On an unrelated note, I was checking some other TB position and stumbled upon this position https://syzygy-tables.info/?fen=6Q1/5NR ... _b_-_-_0_1
Why does the DTZ value of the position vs the one of the top move, down the top line look so weird? Am I missing something?
by koedem
Tue Apr 10, 2018 1:05 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 7-men Syzygy attempt
Replies: 549
Views: 77854

Re: 7-men Syzygy attempt

I am wondering about this: ftp://112.73.74.24/pub/syzygy/7men_testing/KRRPPPvK.txt Longest win for white: 13 ply; 8/8/1P6/RP6/RP6/8/2k5/K7 b - - [D]8/8/1P6/RP6/RP6/8/2k5/K7 b - - Why can white not respond to any move by black with b7? I don't understand very well your question but I ran the positio...
by koedem
Sun Apr 08, 2018 3:45 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 7-men Syzygy attempt
Replies: 549
Views: 77854

Re: 7-man Syzygy attempt.

I know syzygy don't always go for shortest mates. My idea is if syzygy somehow did go for shorest mates, those extra moves can potentially save a good amount of space. Mate in 49 versus 60 mean less space used, just a thought. But if you can convert in 40 moves instead of mate in 49 your numbers ar...
by koedem
Sat Apr 07, 2018 2:38 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 7-men Syzygy attempt
Replies: 549
Views: 77854

Re: 7-man Syzygy attempt.

I have it working now. It produces this game: [pgn][FEN "k7/2QR4/8/8/8/4N3/2r4Q/1K6 b - - 0 1"] [Annotator "syzygy-tables.info"] { DTZ -62 } 1... Rc1+ 2. Ka2 Rc2+ 3. Ka3 Rc3+ 4. Ka4 Rc4+ 5. Ka5 Rc5+ 6. Kb6 Rb5+ 7. Kc6 Rc5+ 8. Kd6 Rd5+ 9. Ke6 Re5+ 10. Kf6 Rf5+ 11. Kg6 Rf6+ 12. Kg5 Rg6+ 13. Kf4 Rg4+ ...
by koedem
Fri Apr 06, 2018 11:35 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 7-men Syzygy attempt
Replies: 549
Views: 77854

Re: 7-man Syzygy attempt.

syzygy wrote: SF's search indeed does not output the DTZ value.
Was that changed recently? I remember SF used to give DTZ values.
It would output all moves and give the DTZ score for each with something like +3, or -2.
Or maybe that was my GUI, not 100% sure.