{"count":60433,"next":"https://online-go.com/api/v1/tournaments?format=json&ordering=board_size&page=4264","previous":"https://online-go.com/api/v1/tournaments?format=json&ordering=board_size&page=4262","results":[{"id":33909,"name":"Correspondence Weekly McMahon 19x19 2018-01-27 17:00","director":{"id":4,"username":"matburt","country":"us","icon":"https://secure.gravatar.com/avatar/a87ff679a2f3e71d9181a67b7542122c?s=64&d=retro","ratings":{"version":5,"overall":{"rating":1125.8827017028436,"deviation":78.19731452501959,"volatility":0.06006087171771568}},"ranking":17.66169912212786,"professional":false,"ui_class":"supporter moderator admin"},"description":"Automatic Sitewide Tournament","schedule":{"id":9,"name":"Correspondence Weekly McMahon 19x19","rrule":"DTSTART:20260727T170000Z\nRRULE:FREQ=WEEKLY","active":true,"created":"2015-12-16T02:22:56.480465Z","last_run":"2026-07-27T17:00:53.448073Z","lead_time_seconds":432000,"tournament_type":"s_mcmahon","handicap":0,"rules":"japanese","size":19,"time_control_parameters":{"time_control":"fischer","initial_time":259200,"pause_on_weekends":true,"max_time":259200,"time_increment":86400},"min_ranking":0,"max_ranking":36,"analysis_enabled":true,"exclude_provisional":true,"players_start":10,"first_pairing_method":"random","subsequent_pairing_method":"strength","settings":{"num_rounds":3,"upper_bar":"25","lower_bar":"15","group_size":4,"maximum_players":1000},"next_run":"2026-08-03T17:00:00Z","base_points":"30.0"},"title":null,"tournament_type":"s_mcmahon","handicap":0,"rules":"japanese","time_per_move":89280,"time_control_parameters":{"time_control":"fischer","initial_time":259200,"pause_on_weekends":true,"max_time":259200,"time_increment":86400},"is_open":true,"exclude_provisional":true,"group":null,"auto_start_on_max":false,"time_start":"2018-01-27T17:00:04.862431Z","players_start":60,"first_pairing_method":"random","subsequent_pairing_method":"strength","min_ranking":0,"max_ranking":36,"analysis_enabled":true,"exclusivity":"open","started":"2018-01-27T17:00:56.885920Z","ended":"2019-05-15T00:53:52.936429Z","start_waiting":"2018-01-27T17:00:36.788824Z","board_size":19,"active_round":null,"icon":"https://cdn.online-go.com/5.1/img/trophies/gold_title_19.png","player_count":62,"ranked":true},{"id":49561,"name":"Blitz 19x19 Elimination Tournament 2019-06-22 09:30","director":{"id":4,"username":"matburt","country":"us","icon":"https://secure.gravatar.com/avatar/a87ff679a2f3e71d9181a67b7542122c?s=64&d=retro","ratings":{"version":5,"overall":{"rating":1125.8827017028436,"deviation":78.19731452501959,"volatility":0.06006087171771568}},"ranking":17.66169912212786,"professional":false,"ui_class":"supporter moderator admin"},"description":"Automatic Sitewide Tournament","schedule":{"id":1,"name":"Blitz 19x19 Elimination Tournament","rrule":"DTSTART:20260730T130000Z\nRRULE:FREQ=HOURLY;INTERVAL=4","active":true,"created":"2014-12-20T06:06:42.010011Z","last_run":"2026-07-30T13:00:22.689255Z","lead_time_seconds":1800,"tournament_type":"elimination","handicap":0,"rules":"japanese","size":19,"time_control_parameters":{"time_control":"byoyomi","period_time":10,"main_time":120,"periods":5},"min_ranking":0,"max_ranking":36,"analysis_enabled":false,"exclude_provisional":true,"players_start":4,"first_pairing_method":"slide","subsequent_pairing_method":"slide","settings":{"num_rounds":"3","upper_bar":"20","lower_bar":"10","group_size":"3","maximum_players":100},"next_run":"2026-07-30T17:00:00Z","base_points":"10.0"},"title":null,"tournament_type":"elimination","handicap":0,"rules":"japanese","time_per_move":11,"time_control_parameters":{"time_control":"byoyomi","period_time":10,"main_time":120,"periods":5},"is_open":true,"exclude_provisional":true,"group":null,"auto_start_on_max":false,"time_start":"2019-06-22T09:30:09.055769Z","players_start":4,"first_pairing_method":"slide","subsequent_pairing_method":"slide","min_ranking":0,"max_ranking":36,"analysis_enabled":false,"exclusivity":"open","started":"2019-06-22T09:30:11.255201Z","ended":"2019-06-22T09:57:37.970789Z","start_waiting":"2019-06-22T09:30:10.618607Z","board_size":19,"active_round":null,"icon":"https://cdn.online-go.com/5.1/img/trophies/gold_title_19.png","player_count":4,"ranked":true},{"id":50575,"name":"第一届绍兴围棋公开赛","director":{"id":650156,"username":"gowc2019","country":"cn","icon":"https://user-uploads.online-go.com/4412e9d2860ec0606824372b6d7b23b3-64.png","ratings":{"version":5,"overall":{"rating":1778.3708838213038,"deviation":63.512486559650974,"volatility":0.05997024188765136}},"ranking":28.244266948664077,"professional":false,"ui_class":""},"description":"第一届绍兴围棋公开赛","schedule":null,"title":null,"tournament_type":"mcmahon","handicap":0,"rules":"japanese","time_per_move":89280,"time_control_parameters":{"system":"fischer","time_control":"fischer","speed":"correspondence","time_increment":86400,"initial_time":259200,"max_time":604800},"is_open":true,"exclude_provisional":true,"group":{"id":3867,"name":"Shaoxing Go Club","summary":"","require_invitation":false,"is_public":true,"admin_only_tournaments":false,"hide_details":false,"member_count":1,"icon":"https://user-uploads.online-go.com/4412e9d2860ec0606824372b6d7b23b3-64.png"},"auto_start_on_max":false,"time_start":"2019-08-01T01:00:00Z","players_start":4,"first_pairing_method":"slide","subsequent_pairing_method":"slaughter","min_ranking":5,"max_ranking":38,"analysis_enabled":true,"exclusivity":"open","started":"2019-08-01T01:00:51.777023Z","ended":"2019-10-27T06:14:01.014792Z","start_waiting":"2019-08-01T01:00:51.517768Z","board_size":19,"active_round":null,"icon":"https://user-uploads.online-go.com/4412e9d2860ec0606824372b6d7b23b3-15.png","player_count":4,"ranked":true},{"id":49348,"name":"✴ Castle Games ✴","director":{"id":485271,"username":"RyukBaduk","country":"_GoT_Tully","icon":"https://user-uploads.online-go.com/2aabf09856a41e8e9248d4dfc4bcc60e-64.png","ratings":{"version":5,"overall":{"rating":1400.5931119029472,"deviation":64.6436221001988,"volatility":0.060000140023822056}},"ranking":22.71600265928813,"professional":false,"ui_class":""},"description":"Important ♡\nautomatic handicap is enabled, the games are live. \n\nTry to alert you opponent if they are online when your matches begin. \n\n\n🥇The winner gets 3 games of his choosing reviewed by leela and 1 by AlphaJoe.\n\n🥈 1 yankee dime\n\n\n\n\n\n\n\n\n\n\n🥉 Deez nutts","schedule":null,"title":null,"tournament_type":"roundrobin","handicap":-1,"rules":"japanese","time_per_move":50,"time_control_parameters":{"system":"byoyomi","time_control":"byoyomi","speed":"live","pause_on_weekends":false,"main_time":1800,"period_time":30,"periods":4},"is_open":true,"exclude_provisional":false,"group":{"id":3,"name":"OGS","summary":"An open group for folks' who like OGS!","require_invitation":false,"is_public":true,"admin_only_tournaments":false,"hide_details":false,"member_count":1798,"icon":"https://user-uploads.online-go.com/09ea48b349cad5d5f27e07f5e0177803-64.png"},"auto_start_on_max":true,"time_start":"2019-06-30T03:00:00Z","players_start":4,"first_pairing_method":"slide","subsequent_pairing_method":"slaughter","min_ranking":5,"max_ranking":38,"analysis_enabled":true,"exclusivity":"open","started":"2019-07-03T09:19:09.286434Z","ended":"2019-07-03T09:51:09.395371Z","start_waiting":"2019-07-03T09:19:08.471469Z","board_size":19,"active_round":null,"icon":"https://user-uploads.online-go.com/09ea48b349cad5d5f27e07f5e0177803-15.png","player_count":4,"ranked":true},{"id":51866,"name":"Blitz 19x19 Elimination Tournament 2019-09-09 21:30","director":{"id":4,"username":"matburt","country":"us","icon":"https://secure.gravatar.com/avatar/a87ff679a2f3e71d9181a67b7542122c?s=64&d=retro","ratings":{"version":5,"overall":{"rating":1125.8827017028436,"deviation":78.19731452501959,"volatility":0.06006087171771568}},"ranking":17.66169912212786,"professional":false,"ui_class":"supporter moderator admin"},"description":"Automatic Sitewide Tournament","schedule":{"id":1,"name":"Blitz 19x19 Elimination Tournament","rrule":"DTSTART:20260730T130000Z\nRRULE:FREQ=HOURLY;INTERVAL=4","active":true,"created":"2014-12-20T06:06:42.010011Z","last_run":"2026-07-30T13:00:22.689255Z","lead_time_seconds":1800,"tournament_type":"elimination","handicap":0,"rules":"japanese","size":19,"time_control_parameters":{"time_control":"byoyomi","period_time":10,"main_time":120,"periods":5},"min_ranking":0,"max_ranking":36,"analysis_enabled":false,"exclude_provisional":true,"players_start":4,"first_pairing_method":"slide","subsequent_pairing_method":"slide","settings":{"num_rounds":"3","upper_bar":"20","lower_bar":"10","group_size":"3","maximum_players":100},"next_run":"2026-07-30T17:00:00Z","base_points":"10.0"},"title":null,"tournament_type":"elimination","handicap":0,"rules":"japanese","time_per_move":11,"time_control_parameters":{"time_control":"byoyomi","period_time":10,"main_time":120,"periods":5},"is_open":true,"exclude_provisional":true,"group":null,"auto_start_on_max":false,"time_start":"2019-09-09T21:30:32.696376Z","players_start":4,"first_pairing_method":"slide","subsequent_pairing_method":"slide","min_ranking":0,"max_ranking":36,"analysis_enabled":false,"exclusivity":"open","started":"2019-09-09T21:30:35.103521Z","ended":"2019-09-09T21:52:34.059820Z","start_waiting":"2019-09-09T21:30:34.015341Z","board_size":19,"active_round":null,"icon":"https://cdn.online-go.com/5.1/img/trophies/gold_title_19.png","player_count":6,"ranked":true},{"id":53951,"name":"Live 19x19 Swiss Tournament 2019-11-17 20:30","director":{"id":4,"username":"matburt","country":"us","icon":"https://secure.gravatar.com/avatar/a87ff679a2f3e71d9181a67b7542122c?s=64&d=retro","ratings":{"version":5,"overall":{"rating":1125.8827017028436,"deviation":78.19731452501959,"volatility":0.06006087171771568}},"ranking":17.66169912212786,"professional":false,"ui_class":"supporter moderator admin"},"description":"Automatic Sitewide Tournament","schedule":{"id":4,"name":"Live 19x19 Swiss Tournament","rrule":"DTSTART:20260730T160000Z\nRRULE:FREQ=HOURLY;INTERVAL=4","active":true,"created":"2014-12-20T06:30:39.250689Z","last_run":"2026-07-30T16:00:22.703274Z","lead_time_seconds":1800,"tournament_type":"swiss","handicap":0,"rules":"japanese","size":19,"time_control_parameters":{"time_control":"byoyomi","period_time":30,"main_time":600,"periods":3},"min_ranking":0,"max_ranking":36,"analysis_enabled":false,"exclude_provisional":true,"players_start":6,"first_pairing_method":"random","subsequent_pairing_method":"strength","settings":{"num_rounds":"3","upper_bar":"20","lower_bar":"10","group_size":"3","maximum_players":40},"next_run":"2026-07-30T20:00:00Z","base_points":"10.0"},"title":null,"tournament_type":"swiss","handicap":0,"rules":"japanese","time_per_move":36,"time_control_parameters":{"time_control":"byoyomi","period_time":30,"main_time":600,"periods":3},"is_open":true,"exclude_provisional":true,"group":null,"auto_start_on_max":false,"time_start":"2019-11-17T20:30:36.508926Z","players_start":6,"first_pairing_method":"random","subsequent_pairing_method":"strength","min_ranking":0,"max_ranking":36,"analysis_enabled":false,"exclusivity":"open","started":"2019-11-17T20:30:39.214892Z","ended":"2019-11-17T21:45:54.575346Z","start_waiting":"2019-11-17T20:30:38.022076Z","board_size":19,"active_round":null,"icon":"https://cdn.online-go.com/5.1/img/trophies/gold_title_19.png","player_count":6,"ranked":true},{"id":52904,"name":"Correspondence 19x19 RoundRobin 2019-10-14 19:00","director":{"id":4,"username":"matburt","country":"us","icon":"https://secure.gravatar.com/avatar/a87ff679a2f3e71d9181a67b7542122c?s=64&d=retro","ratings":{"version":5,"overall":{"rating":1125.8827017028436,"deviation":78.19731452501959,"volatility":0.06006087171771568}},"ranking":17.66169912212786,"professional":false,"ui_class":"supporter moderator admin"},"description":"Automatic Sitewide Tournament","schedule":{"id":6,"name":"Correspondence 19x19 RoundRobin","rrule":"DTSTART:20260729T190000Z\nRRULE:FREQ=DAILY;INTERVAL=3","active":true,"created":"2015-02-20T05:58:31.027016Z","last_run":"2026-07-29T19:00:23.080241Z","lead_time_seconds":86400,"tournament_type":"roundrobin","handicap":0,"rules":"japanese","size":19,"time_control_parameters":{"time_control":"fischer","initial_time":259200,"pause_on_weekends":true,"max_time":432000,"time_increment":86400},"min_ranking":0,"max_ranking":36,"analysis_enabled":true,"exclude_provisional":true,"players_start":4,"first_pairing_method":"slaughter","subsequent_pairing_method":"slaughter","settings":{"num_rounds":"3","upper_bar":"20","lower_bar":"10","group_size":"3","maximum_players":10},"next_run":"2026-08-01T19:00:00Z","base_points":"10.0"},"title":null,"tournament_type":"roundrobin","handicap":0,"rules":"japanese","time_per_move":89280,"time_control_parameters":{"time_control":"fischer","initial_time":259200,"pause_on_weekends":true,"max_time":432000,"time_increment":86400},"is_open":true,"exclude_provisional":true,"group":null,"auto_start_on_max":false,"time_start":"2019-10-14T19:00:34.096214Z","players_start":4,"first_pairing_method":"slaughter","subsequent_pairing_method":"slaughter","min_ranking":0,"max_ranking":36,"analysis_enabled":true,"exclusivity":"open","started":"2019-10-14T19:00:54.290395Z","ended":"2020-03-27T03:53:33.536951Z","start_waiting":"2019-10-14T19:00:51.331568Z","board_size":19,"active_round":null,"icon":"https://cdn.online-go.com/5.1/img/trophies/gold_title_19.png","player_count":8,"ranked":true},{"id":38506,"name":"1st International Mandelbrot Cup","director":{"id":527014,"username":"deleted-fae04c4c-3738-4477-a91f-f0435f893e32","country":"gb","icon":"https://user-uploads.online-go.com/b243196be54f7c40b369dcf90670360e-64.png","ratings":{"version":5,"overall":{"rating":1043.6976545990792,"deviation":69.08991620947712,"volatility":0.05998374323037165}},"ranking":15.90698683292563,"professional":false,"ui_class":""},"description":"In honour of Benoit Mandelbrot a mathematician famous for the Mandelbrot set.  The Mandelbrot set is one of the most beautiful bits of maths showing all values of c in which the corresponding Julia set of z->z^2+c is connected.\n\n....maybe our games of Go demonstrate something of the fractal properties that we see in the Mandelbrot set.\n\nWho has what it takes to hold the first title!\n\nJoin in and have fun.","schedule":null,"title":null,"tournament_type":"mcmahon","handicap":0,"rules":"japanese","time_per_move":89280,"time_control_parameters":{"system":"fischer","time_control":"fischer","initial_time":259200,"max_time":604800,"time_increment":86400,"speed":"correspondence"},"is_open":true,"exclude_provisional":true,"group":{"id":37,"name":"UK ","summary":"","require_invitation":false,"is_public":true,"admin_only_tournaments":false,"hide_details":false,"member_count":73,"icon":"https://cdn.online-go.com/5.1/img/default-group-v5.svg"},"auto_start_on_max":false,"time_start":"2018-07-01T21:00:00Z","players_start":4,"first_pairing_method":"slide","subsequent_pairing_method":"slaughter","min_ranking":5,"max_ranking":38,"analysis_enabled":true,"exclusivity":"open","started":"2018-07-01T21:00:44.947450Z","ended":"2019-07-27T20:28:47.632069Z","start_waiting":"2018-07-01T21:00:43.584053Z","board_size":19,"active_round":null,"icon":"https://cdn.online-go.com/5.1/img/default-group-v5.svg","player_count":18,"ranked":true},{"id":28645,"name":"FSTS Knockouts Open August 2017","director":{"id":87790,"username":"WiseBear","country":"ru","icon":"https://user-uploads.online-go.com/87e96797186d0c4042434c29195d8f12-64.png","ratings":{"version":5,"overall":{"rating":1104.0021061102002,"deviation":62.08308547890164,"volatility":0.06028822213904829}},"ranking":17.207368885691388,"professional":false,"ui_class":""},"description":"Monthly regular contest for all OGS players","schedule":null,"title":null,"tournament_type":"elimination","handicap":0,"rules":"japanese","time_per_move":89280,"time_control_parameters":{"system":"fischer","pause_on_weekends":true,"time_control":"fischer","initial_time":259200,"max_time":259200,"time_increment":86400,"speed":"correspondence"},"is_open":true,"exclude_provisional":true,"group":{"id":353,"name":"Four Seasons Tournament Series","summary":"Серия турниров \"Четыре Сезона\"","require_invitation":true,"is_public":false,"admin_only_tournaments":false,"hide_details":true,"member_count":623,"icon":"https://user-uploads.online-go.com/da3625d8ecb510c14d65689ea409862b-64.png"},"auto_start_on_max":false,"time_start":"2017-08-15T15:00:00Z","players_start":25,"first_pairing_method":"strength","subsequent_pairing_method":"strength","min_ranking":0,"max_ranking":36,"analysis_enabled":true,"exclusivity":"open","started":"2017-08-15T15:00:53.736708Z","ended":"2020-02-14T13:00:56.290519Z","start_waiting":"2017-08-15T15:00:44.187338Z","board_size":19,"active_round":null,"icon":"https://user-uploads.online-go.com/da3625d8ecb510c14d65689ea409862b-15.png","player_count":100,"ranked":true},{"id":44439,"name":"December ,Michigan G.P.","director":{"id":467165,"username":"MummRa","country":"us","icon":"https://user-uploads.online-go.com/68359dab5164ddcdffa8ad4ca0699079-64.png","ratings":{"version":5,"overall":{"rating":1260.4514790067904,"deviation":65.48820329250682,"volatility":0.060021236131789904}},"ranking":20.27539481493184,"professional":false,"ui_class":""},"description":"Winners of monthly tournaments will be invited to yearly championship game","schedule":null,"title":null,"tournament_type":"s_mcmahon","handicap":0,"rules":"japanese","time_per_move":26880,"time_control_parameters":{"total_time":2419200,"time_control":"absolute","speed":"correspondence","system":"absolute","pause_on_weekends":false},"is_open":true,"exclude_provisional":true,"group":{"id":306,"name":"Michigan Go Players","summary":"For Players from all over Michigan","require_invitation":false,"is_public":true,"admin_only_tournaments":false,"hide_details":false,"member_count":89,"icon":"https://cdn.online-go.com/5.1/img/default-group-v5.svg"},"auto_start_on_max":false,"time_start":"2019-12-14T12:00:00Z","players_start":4,"first_pairing_method":"slide","subsequent_pairing_method":"slaughter","min_ranking":5,"max_ranking":38,"analysis_enabled":true,"exclusivity":"group","started":"2019-12-14T12:00:29.171597Z","ended":"2020-03-17T00:24:33.162432Z","start_waiting":"2019-12-14T12:00:23.379945Z","board_size":19,"active_round":null,"icon":"https://cdn.online-go.com/5.1/img/default-group-v5.svg","player_count":7,"ranked":true}]}