Yes. I have chess and checkers. Without this board, there would be no tournament.Joost Buijs wrote: ↑Wed Sep 14, 2022 07:05So you are using a DGT electronic draughts board, I didn't know that something like this exists. In the past I had a DGT electronic chess board, I assume the capabilities of the draughts board are about the same.
All games are set to 85 moves. The fact that I continue to play is only to check whether the database can be trusted with a given program.Ed Gilbert wrote: ↑Thu Sep 15, 2022 13:50Krzysztof, I noticed that some of the games are longer than 85 moves. For examples, round 23 flits vs td king is 92 moves, and round 27 edeon sport vs damage is 93 moves. Do you reconfigure the engines' time controls when happens? If you do nothing, then anything past 85 moves is undefined behavior. Kingsrow will try to use all of its time for 85 moves, so it may have no time left after that. I don't remember what it does if you ask it to make an 86th move and there is zero time on its clock. Probably every engine handles this differently because it is unspecified. I think you need to limit all games to 85 moves and then call the game result based on the final position.
I don't think that's a good solution. Most programs will have a problem setting the time 10 minutes + 1 minute.Joost Buijs wrote: ↑Fri Sep 16, 2022 07:15IMO 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 remaining moves.
When both programs agree on the outcome of the game from their database, you may want stop the game to save time, but it is better to play the game till the end because it happens that programs with a WDL database don't know how to make progress in a won position.
This solution would be fine, that it is impossible in practice is something that could be solved. I assume most programs are already keeping a time buffer with some spare time internally because this is a normal thing to do.Krzysztof Grzelak wrote: ↑Fri Sep 16, 2022 07:21I don't think that's a good solution. Most programs will have a problem setting the time 10 minutes + 1 minute.Joost Buijs wrote: ↑Fri Sep 16, 2022 07:15IMO 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 remaining moves.
When both programs agree on the outcome of the game from their database, you may want stop the game to save time, but it is better to play the game till the end because it happens that programs with a WDL database don't know how to make progress in a won position.
The point is that anything that happens after 85 moves is unspecified behavior and should be excluded from the tournament. If a game is a draw after 85 moves and then a program makes a losing move on the 86th move, the game should still be declared a draw.Krzysztof Grzelak wrote: ↑Thu Sep 15, 2022 19:21All games are set to 85 moves. The fact that I continue to play is only to check whether the database can be trusted with a given program.
Now what do I do with all of this?Ed Gilbert wrote: ↑Fri Sep 16, 2022 13:34The point is that anything that happens after 85 moves is unspecified behavior and should be excluded from the tournament. If a game is a draw after 85 moves and then a program makes a losing move on the 86th move, the game should still be declared a draw.
You probably don't need to do anything to games already played because none of the outcomes changed after 85 moves.
This is an important issue, some games can take more than 90 moves to end in victory. There is a specific position that occurred in a game after the move number 75, where black had 1 pawn and 4 kings, while white had 1 pawn and 1 king. If placed this position played with the best moves of both colors, it still takes 23 more moves to finish.Ed Gilbert wrote: ↑Fri Sep 16, 2022 13:47You probably don't need to do anything to games already played because none of the outcomes changed after 85 moves.
Stop all future games at 85 moves maximum.
