The 4th Lichess Bots Championship will start on the 1st of December 2019 UTC and will have different rules (unlike the previous Lichess Bots Championships). After the 3rd Lichess Bots Championship has ended (because that's what's important right now) and before the 1st of December 2019 UTC, participants can sign up for the tournament in a thread that will be created by arbiter Ajile (the time control will also be announced then).
From the 1st of December to the 6th of December 2019 UTC, all participants can challenge each other to matches (at any time) and post the results in a thread that will be created by Ajile. Matches are won when one participant gets a 4 point advantage over another (for example a 7-3 win, this total score has to be posted). Because participants can challenge each other at any time, all relevant results in the crosstables between players will count (you don't have to agree on a time to play and the owner of the bot doesn't have to be present). This (and an uncommon time control) will make it easier to check if the results that are posted by the participants are correct. During the entire tournament only your first match against an opponent will count.
On the 7th of December 2019 UTC, Ajile will create four groups based on how many participants each bot has defeated. If bots have defeated the same amount of participants, the bot with the higher 'proficiency score' (not only tournament games, the formula: rated wins / rated losses * rated wins and rated draws / rated losses) has a higher ranking. Group A is the highest group, group D is the lowest group. Participants that played less than 4 tournament games, are removed from the tournament.
From the 8th of December to the 13th of December 2019 UTC, all remaining participants can challenge each other, but only the results against participants from their own group count (including the tournament results they achieved against participants from their group during the previous week, they 'cannot' play more matches against them). On the 14th of December 2019 UTC, Ajile will split all groups in two based on how many participants from their own group each bot has defeated. If bots have defeated the same amount of participants, the bot with the higher 'proficiency score' (not only tournament games, the formula: rated wins / rated losses * rated wins and rated draws / rated losses) has a higher ranking. Group A1 is the highest group, group D2 is the lowest group. Participants that played less than 16 tournament games so far, are removed from the tournament.
From the 15th of December to the 20th of December 2019 UTC, all remaining participants can challenge each other, but only the results against participants from their own group count (including the tournament results they achieved against participants from their group during the previous two weeks, they 'cannot' play more matches against them). Some participants will already have played against all participants from their group before the end of the week. On the 21th of December 2019 UTC, Ajile decides the ranking in the same way as in week 1 and 2, but the final ranking has to have a clear winner (especially in group A1, which decides the winner of the tournament), so if during week 3 it seems like two participants will end up with the same amount of participants from their own group they have defeated, they can play an additional match against each other to determine who of them gets a better final ranking. The winner of group A1 is the winner of the 4th Lichess Bots Championship.
Questions or reactions based on this plan are welcome.
From the 1st of December to the 6th of December 2019 UTC, all participants can challenge each other to matches (at any time) and post the results in a thread that will be created by Ajile. Matches are won when one participant gets a 4 point advantage over another (for example a 7-3 win, this total score has to be posted). Because participants can challenge each other at any time, all relevant results in the crosstables between players will count (you don't have to agree on a time to play and the owner of the bot doesn't have to be present). This (and an uncommon time control) will make it easier to check if the results that are posted by the participants are correct. During the entire tournament only your first match against an opponent will count.
On the 7th of December 2019 UTC, Ajile will create four groups based on how many participants each bot has defeated. If bots have defeated the same amount of participants, the bot with the higher 'proficiency score' (not only tournament games, the formula: rated wins / rated losses * rated wins and rated draws / rated losses) has a higher ranking. Group A is the highest group, group D is the lowest group. Participants that played less than 4 tournament games, are removed from the tournament.
From the 8th of December to the 13th of December 2019 UTC, all remaining participants can challenge each other, but only the results against participants from their own group count (including the tournament results they achieved against participants from their group during the previous week, they 'cannot' play more matches against them). On the 14th of December 2019 UTC, Ajile will split all groups in two based on how many participants from their own group each bot has defeated. If bots have defeated the same amount of participants, the bot with the higher 'proficiency score' (not only tournament games, the formula: rated wins / rated losses * rated wins and rated draws / rated losses) has a higher ranking. Group A1 is the highest group, group D2 is the lowest group. Participants that played less than 16 tournament games so far, are removed from the tournament.
From the 15th of December to the 20th of December 2019 UTC, all remaining participants can challenge each other, but only the results against participants from their own group count (including the tournament results they achieved against participants from their group during the previous two weeks, they 'cannot' play more matches against them). Some participants will already have played against all participants from their group before the end of the week. On the 21th of December 2019 UTC, Ajile decides the ranking in the same way as in week 1 and 2, but the final ranking has to have a clear winner (especially in group A1, which decides the winner of the tournament), so if during week 3 it seems like two participants will end up with the same amount of participants from their own group they have defeated, they can play an additional match against each other to determine who of them gets a better final ranking. The winner of group A1 is the winner of the 4th Lichess Bots Championship.
Questions or reactions based on this plan are welcome.