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Patrick Byrom
24-04-2021, 04:22 PM
Just a minor point. Would you want to have a tournament with 500 players? If it's a rapid with 20 rounds it might work, though the admin of getting 250 results into the computer every half-hour would be an adventure, and how many players are going to be regularly travelling for rapid tournaments? On the other hand if you split it into groups then you're effectively back to having rating prizes. I think these sort of numbers are mainly only viable for teams events.

So what's the largest individual or team chess event where all the players are playing at the same location in the same division? For example, the 1983 US Open at Pasadena had over 800 players, but I assume that it would have been split into several divisions. There would have been undivided Gold Coast or Sunshine Coast events with well over 100 players, but surely there must have been larger events than that somewhere?

Ian Rout
24-04-2021, 04:39 PM
So what's the largest individual or team chess event where all the players are playing at the same location in the same division? For example, the 1983 US Open at Pasadena had over 800 players, but I assume that it would have been split into several divisions. There would have been undivided Gold Coast or Sunshine Coast events with well over 100 players, but surely there must have been larger events than that somewhere?

I think the World Blitz may be about 250. (I could be wrong though.)

Patrick Byrom
24-04-2021, 05:57 PM
I think the World Blitz may be about 250. (I could be wrong though.)I think you're correct and we have a winner! The Plus GSM World Blitz Cup (https://web.archive.org/web/20010424165718/http://www.chess-mate.com/warsaw.htm), played on January 9, 2000, in Warsaw, had 629(!) entries, although only 367 players actually played (https://theweekinchess.com/html/twic270.html#8). It appears to have been played in a single division, but I can't find a standings or cross-table to confirm that. It was won by blitz king Viswanathan Anand, who picked up $10 000 (plus a $5 000 appearance fee) for his one day's work.

pappubahry
24-04-2021, 07:07 PM
The Lakecity Winter Below 1600 Fide Rating Chess Tournament 2019 (http://chess-results.com/tnr473693.aspx?lan=1&art=4&turdet=YES&flag=30&zeilen=99999) (Udaipur, India) had 646 entries, of whom 632 played at least one round. It was an 8-round Swiss at 60 30 time control played over three days.

I don't claim that this is the record. Some early trawling through chess-results.com suggested that India hosts some big events, and I found the above event by searching for events in India in 2019 and scrolling through the table of tournaments that it returned. I haven't searched more systematically than that.

Patrick Byrom
24-04-2021, 08:58 PM
The Lakecity Winter Below 1600 Fide Rating Chess Tournament 2019 (http://chess-results.com/tnr473693.aspx?lan=1&art=4&turdet=YES&flag=30&zeilen=99999) (Udaipur, India) had 646 entries, of whom 632 played at least one round. It was an 8-round Swiss at 60 30 time control played over three days. I don't claim that this is the record. Some early trawling through chess-results.com suggested that India hosts some big events, and I found the above event by searching for events in India in 2019 and scrolling through the table of tournaments that it returned. I haven't searched more systematically than that.Wow!! That may not be the record, but I cannot imagine any event being too much larger. The entry form is here (https://aicf.in/wp-content/uploads/2019/02/BELOW-FINAL-BELOW-1600-DEC-2019-LAKECITY.pdf).

Craig_Hall
30-04-2021, 09:50 PM
I don't know what the largest in Australasia is, but probably some massive Australian blitz. I think the biggest NZ single division event (in living memory at least) was the first Queenstown Classic (192 entries).

iSage
04-05-2021, 10:46 AM
Gaurav Chhabra sent me some photos of 820 students from schools in North India playing in the CBSE North Zone Chess Championship

https://www.facebook.com/photo?fbid=10219775903530217&set=pcb.10219775912210434
https://www.facebook.com/photo?fbid=10219775906250285&set=pcb.10219775912210434

Shaun94
04-05-2021, 12:52 PM
Gaurav Chhabra sent me some photos of 820 students from schools in North India playing in the CBSE North Zone Chess Championship

https://www.facebook.com/photo?fbid=10219775903530217&set=pcb.10219775912210434
https://www.facebook.com/photo?fbid=10219775906250285&set=pcb.10219775912210434

Is that all 1 division though? If so I wonder how many rounds would have to be played in order to find a winner

Scott Colliver
05-05-2021, 08:50 PM
Is that all 1 division though? If so I wonder how many rounds would have to be played in order to find a winner

10 rounds to ensure it is not possible to have more than 1 player on 100%