World Draughts Forum

Krzysztof Grzelak wrote: ↑

Tue Sep 20, 2022 18:11

I know that. Please wait a few days. I'm just creating it. I cannot spend much time on the computer because of very important family issues.

Don't hurry, family issues are way more important than this.

Hi Krzysztof,

I tried to download all the games of the tournament but the link to download the games does not seem to work, it says unable to find Draughts2022.rar

Can you take a look at this? Thanks in advance.

Greetings, Joost

Tournament " The Unofficial World Championship Of Computer Programs In International Draughts 2022 " ended with victory of the program Ares by Joost Buijs , second and third place was taken Scan by Fabien Letouzey and Kingsrow by Edgar Gilbert . Congratulations to Joost Buijs,Fabien Letouzey and Ed...

IMO it is a bit weird to set a fixed limit on the number of moves with a game like international draughts, with othello/reversi you can do this because a game will never last longer than 30 moves for each player. It would be better to say something like 85 moves in 10 minutes plus 1 minute for all ...

IMO it is a bit weird to set a fixed limit on the number of moves with a game like international draughts, with othello/reversi you can do this because a game will never last longer than 30 moves for each player. For draughts it would be better to say something like 85 moves in 10 minutes plus 1 min...

It's not important, I understand that it is difficult to grasp what it all does. I assume you use a DGT timer that is transmitting the used time or the remaining time of the players to the website that runs the tournament software. Anyway thanks for organizing this tournament, it is a wonderful yob...

In a previous round (I don't remember which one) I saw something strange happening too, there was a game going on, and the next game (that still had to be played) showed the same moves. I don't know what kind of software is used to broadcast these games, but there seem to be some irregularities in ...

I have to apologize to everyone watching the tournament. Unfortunately something happened in the 22nd round - and the games and the results of the games are gone. He tried to restore all the games and see what the cause of this fault was. Krzysztof In a previous round (I don't remember which one) I...

Here an example where i believe a draw was possible. It is a complex (at least for me) late middle game position from the game Damage - TD King, round 19. In the below diagram TD-King (black) played 42. 22-27?, whereas 38-43 seems to be a draw. After 22-27 the engine thinks it has a huge advantage....

clp wrote: ↑

Thu Sep 08, 2022 10:38

Joost Buijs wrote: ↑

Sat Sep 03, 2022 08:29

Hi Krzysztof,
Can you tell how "No O.(W)" is calculated, I mean the formula?

What the formula means when not all the results are known is as yet shrouded in mystery.

Indeed, up until now it looks a bit fuzzy to say the least.

Rein, It is -13 Elo compared to the same program with a 2.5x longer thinking time. I ran several matches, each time the match came out between -15 and -11 Elo. Of course this doesn't mean that for another program it will be the same. [edit] I only wanted to know what the difference in playing streng...

It seems that you don't need a very large NN to get good performance with International Draughts, the current NN of Ares has ~53K 16 bit weights, even a smaller NN with ~30K weights gives me good results. With NN evaluation and AVX2 SIMD code the search reaches ~40% of the speed I get with an optima...

@Joost. It is: the best result obtained in order of the classification, e.g. the preceding tie-break criteria. Consider the following example: +---12---+ Pl | 1 2 3 4 5 6 7 |8 9 10 | 11 12 13 14| N Pts| TB S1 1-2 | X 1 1 1 1 1 2 |2 2 2 | 1 1 2 2|13 19| 6 against [8-10] S2 1-2 | 1 X 1 1 1 1 2 |1 1 2...

Hi Krzysztof, I assumed you would use SB as "better results with best opponents". Can you tell how "No O.(W)" is calculated, I mean the formula? Joost I will answer this question later. I will just write that there was a discussion on the forum not to use the factor S.B. Link to the discussion of t...

Hi Krzysztof,

I assumed you would use SB as "better results with best opponents".

Can you tell how "No O.(W)" is calculated, I mean the formula?

Joost