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Crazyhouse World Championship 2021 - Tournament Structure and Prizes

Hello everyone!

We’re due to commence the Crazyhouse World Championship 2021 very soon after 1st March when the period closes to have played the minimum requirement of 50 crazyhouse games for entry into the tournament.

A guaranteed prize pool of USD $2,100 will be available to play for. Community contributions towards this prize pool can be made here: streamlabs.com/jannleecrazyhouse. The organiser team may also announce other ways to donate in future. If total community contributions are below the USD $2,100 donation goal, the balance will be guaranteed by @JannLee.

This year there will be seven voluntary organisers including @JannLee, @FischyVishy, @littleplotkin, @okei, @LegionDestroyer, @googa and @grogers. This team of CWC organisers share responsibilities for communication to community and players, tournament structure, rules, dispute management, website maintenance, prize distribution and any other aspects related to operational progress of the event.

More details will follow in future with regards to timeline and rules, but the main pieces to share here today are the tournament and prize structures, which have largely been based on the 3+2 Crazyhouse World Championship from 2020, with an extra $100 provided to allow for 13 candidates instead of 12 candidates.

Why 13 candidates? From this year going forward, the runner-up from the grand final of the Crazyhouse World Championship from the previous year will be granted a position in the candidates stage. The other 12 candidates will be determined by the outcome of the double elimination knockout stage.

Players with guaranteed spots from last year's tournament:
- @opperwezen as CWC 2020 runner-up has a guaranteed spot in the candidates for CWC 2021 and this is non-transferable (meaning that if this player chooses not to play, then this is not transferable to any other player and there will only be 12 candidates)
- @Jasugi99 as CWC 2020 champion has a guaranteed spot in the grand final and will defend the title against the winner of the candidates stage (if this player chooses not to play, then the top 2 candidates will play in the grand final)

Tournament Structure:

Stage 1: Registration

Number of players will determine the size of the double elimination knockout stage (e.g. 64, 128, 256, 512, etc).

Stage 2: Qualification round

As registration is unlikely to yield an exact number of required players (examples above), a group of participants at the lower end of the field will be required to qualify by playing a single elimination knockout round. For example, if there were 260 players that registered, then the double elimination knockout stage would accommodate for only 256 positions. The highest 252 rated players would automatically qualify. This would mean the 8 lowest rated players would have to qualify for 4 positions. The format for this qualification knockout round is a match of 10 crazyhouse games with time control 3+2. Outcome of 5-5 would require further play, two games at a time until the score is decisive (e.g. 7-5, 8-6 or possibly even 6.5-5.5). Winner proceeds to the double elimination knockout round.

Stage 3: Double elimination knockout stage

This is a knockout format, where a player must lose twice before being knocked out. For example, if there were 256 starting positions, all players would begin in the undefeated group (group A). Upon a single loss, a player is moved from group A to the group which have had one loss (group B). A further loss for a player while in group B means two losses during the stage and that player is then eliminated from the tournament.

The format for each of these rounds is a match of 10 crazyhouse games with time control 3+2. Outcome of 5-5 would require further play, two games at a time until the score is decisive (examples above). Winner proceeds to the next round as shown in examples below.

Example here is for 256 players.

At start of double elimination knockout stage:
256 players begin in group A

After round 1 results:
128 players win and stay in group A
128 players lose and move from group A to group B
0 players are eliminated

After round 2 results:
64 players win and remain in group A
64 players lose and move from group A to group B
64 players win and remain in group B
64 players lose in group B and are eliminated

After round 3 results:
64 players do not play and remain in group A
64 players win and remain in group B
64 players lose in group B and are eliminated

After round 4 results:
32 players win and remain in group A
32 players lose and move from group A to group B
32 players win and remain in group B
32 players lose in group B and are eliminated

After round 5 results:
32 players do not play and remain in group A
32 players win and remain in group B
32 players lose in group B and are eliminated

After round 6 results:
16 players win and remain in group A
16 players lose and move from group A to group B
16 players win and remain in group B
16 players lose in group B and are eliminated

After round 7 results:
16 players do not play and remain in group A
16 players win and remain in group B
16 players lose in group B and are eliminated

After round 8 results:
8 players win and remain in group A
8 players lose and move from group A to group B
8 players win and remain in group B
8 players lose in group B and are eliminated

After round 9 results:
8 players do not play and remain in group A
8 players win and remain in group B
8 players lose in group B and are eliminated

After round 10 results:
4 players win and remain in group A
4 players lose and move from group A to group B
4 players win and remain in group B
4 players lose in group B and are eliminated

It is at this point when 4 players will remain in group A and 8 players will remain in group B. These last remaining 12 players will form the group that are candidates to compete for the grand final. These players will then continue to the candidates stage and join the prior year's runner-up @opperwezen to make a field of 13 candidates.

Stage 4: Candidates stage

This is a round robin format, where 13 players will play one match of 10 games of 3+2 crazyhouse against each of the other 12 players. Within this stage, play stops at 10 games per match, even if the result is 5-5. There will be a total of 120 games to be played by each player, with each game worth 1 point. The player with the most points once all games have been completed will be the winner of the candidates stage and have the right to challenge the current 3+2 Crazyhouse World Champion @Jasugi99 (from 2020) in the grand final for the 2021 championship title.

Stage 5: Grand final

This is to be played between the current champion @Jasugi99 and the winner of the candidates in 3 scheduled matches, each comprising of 20 games of 3+2 crazyhouse. After 60 games, the player with the higher score will be declared champion. In the event of a tie at 30-30, the play will continue 2 games at a time until the score is decisive (e.g. 32-30, 33-31 or possibly even 31.5-30.5).

Prize structure:

Overall prize pool of USD $2,100 to be distributed according to results below.

Out of the 12 candidates from the double elimination knockout stage, 8 will have had one loss during the elimination knockout stage, while 4 will have gone through undefeated. While there is no advantage being undefeated heading into the candidates round, to acknowledge the performance of the 4 undefeated players, each will be entitled to a $25 prize upon completion of the double elimination knockout stage.

Points earned during the Candidates stage will determine the following prizes. Players will be entitled to these prizes upon completion of the Candidates stage. In the event of ties on points, respective prizes will be pooled and shared among tied players:

2nd candidate: $150
3rd candidate: $140
4th candidate: $130
5th candidate: $125
6th candidate: $120
7th candidate: $115
8th candidate: $110
9th candidate: $105
10th candidate: $105
11th candidate: $100
12th candidate: $100
13th candidate: $100

The 1st candidate and reigning world champion will battle for the 2021 titles of runner up and new world champion, with prizes to be received upon completion of the grand final:

World champion: $400
Runner up: $200

Looking forward to a great event and plenty of interesting matches!

Regards,
Jann
How many eligible participants are there currently?
Excited to attend cwc 2021, good explanation of the rules and structure.

Crazyhouse has become more active in 1 year, with many new users showing interest.
@mustardboy, there are currently 260 eligible participants, so we can confirm that the double elimination bracket will hold 256 players in CWC 2021
Hi everyone,

There is a slight modification to the tournament structure and prize distribution this year. Last year, we had 4 matches that were seemingly redundant towards the end of the double elimination knockout stage. The results after round 10 have been revised as follows:

After round 10 results:
8 players do not play and remain in group A
4 players win and remain in group B
4 players lose in group B and are eliminated

This is because the primary purpose of the double elimination knockout stage is to determine 12 candidates. Once the 8 players remaining in group A have successfully defeated opponents in 5 rounds without losing a match, they are entitled a position in the candidates stage. It follows that we will be removing the 4x $25 prizes that were previously handed to those that won one more round and remained as one of 4 undefeated players in group A.

This change brings the prize pool back down from $2,100 to a nice round $2,000. We have effectively moved the 4x $25 prizes from last year into a $100 prize for the 13th candidate this year.

Regards,
Jann
@Soham0705 In your case, it's the Double Elimination thread - post your match time in advance and match result after the games. It's good to announce your match beforehand there in the thread, so eager CWC followers have a chance to spectate your games. Volunteers will help to transfer the match times into Crazyhouse Calendar: teamup.com/ks3ozaeaopfk1v98bf?view=agenda. Good luck!

Double Elimination: lichess.org/forum/team-crazyhouse-world-championship/crazyhouse-world-championship-2021-double-elimination-knockout-stage

Single Elimination: lichess.org/forum/team-crazyhouse-world-championship/crazyhouse-world-championship-2021-commencing-with-single-elimination-knockout-round
Thanks just one confirmation that should the the player put the results in the thread or just the timing

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