Tournament List
List all tournaments or create a new tournament.
GET /api/v1/tournaments?format=api&ordering=-board_size&page=2026
{ "count": 59275, "next": "https://online-go.com/api/v1/tournaments?format=api&ordering=-board_size&page=2027", "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-board_size&page=2025", "results": [ { "id": 109562, "name": "HAPPY GO #47 Double Elimination", "director": { "id": 1220803, "username": "nobhaete", "country": "cn", "icon": "https://user-uploads.online-go.com/1565c13b341c9b8bea6066bd85481ee6-64.png", "ratings": { "version": 5, "overall": { "rating": 1903.7504079307619, "deviation": 72.11921191448371, "volatility": 0.05983556722739327 } }, "ranking": 29.821433113974106, "professional": false, "ui_class": "" }, "description": "Hi everyone, welcome and have FUN!\n\nPAUSE/ VACATION = DISQUALIFICATION! If your opponent pauses or has a vacation, or you have any question, please contact nobhaete.\n\nDouble elimination tournament every Sunday.", "schedule": null, "title": null, "tournament_type": "double_elimination", "handicap": 0, "rules": "chinese", "time_per_move": 43884, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "pause_on_weekends": true, "time_increment": 43200, "initial_time": 86400, "max_time": 172800 }, "is_open": true, "exclude_provisional": true, "group": { "id": 12619, "name": "Happy Go!!!", "summary": "Feel free to join and create tournaments！\nCreate tournaments = admin\n\nDouble Elimination tournaments every Sunday \nSingle Elimination tournaments every Thursday\n\nHAPPY", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 70, "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-64.png" }, "auto_start_on_max": false, "time_start": "2023-11-19T04:00:00Z", "players_start": 4, "first_pairing_method": "random", "subsequent_pairing_method": "random", "min_ranking": 5, "max_ranking": 33, "analysis_enabled": true, "exclusivity": "open", "started": "2023-11-19T04:00:52.135718Z", "ended": "2024-04-18T11:43:19.784703Z", "start_waiting": "2023-11-19T04:00:52.037272Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/6075a51acf2316ac03f5b309db5f3953-15.png", "player_count": 8, "ranked": true }, { "id": 18820, "name": "Live 19x19 Swiss Tournament 2016-07-07 16:30", "director": { "id": 4, "username": "matburt", "country": "us", "icon": "https://secure.gravatar.com/avatar/1dff84686f829e8ef90e2e123f1baddf?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:20260409T000000Z\nRRULE:FREQ=HOURLY;INTERVAL=4", "active": true, "created": "2014-12-20T06:30:39.250689Z", "last_run": "2026-04-09T00:00:04.650048Z", "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": "2026-04-09T04:00:00Z", "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": "2016-07-07T16:30:23.814534Z", "players_start": 6, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": false, "exclusivity": "open", "started": "2016-07-07T16:30:25.395046Z", "ended": "2016-07-07T18:47:33.816454Z", "start_waiting": "2016-07-07T16:30:25.176627Z", "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": 3205, "name": "SWT 19x19 SDK 4th Cycle", "director": { "id": 52052, "username": "ST000MA", "country": "rs", "icon": "https://secure.gravatar.com/avatar/da4a122c783bf3156553dfebd327d39d?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 1773.7204734712398, "deviation": 64.7543915421217, "volatility": 0.06233350490466346 } }, "ranking": 28.18365079311867, "professional": false, "ui_class": "" }, "description": "For more information see: http://forums.online-go.com/t/swt-tournaments/860.", "schedule": null, "title": null, "tournament_type": "s_mcmahon", "handicap": 0, "rules": "japanese", "time_per_move": 91200, "time_control_parameters": { "time_control": "fischer", "initial_time": 432000, "max_time": 432000, "time_increment": 86400 }, "is_open": true, "exclude_provisional": true, "group": { "id": 78, "name": "OGS Mini Tournaments", "summary": "The home for all of the old OGS mini tournaments", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 383, "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg" }, "auto_start_on_max": false, "time_start": null, "players_start": null, "first_pairing_method": "strength", "subsequent_pairing_method": "strength", "min_ranking": 21, "max_ranking": 29, "analysis_enabled": true, "exclusivity": "open", "started": "2014-12-15T21:15:40.920927Z", "ended": "2017-04-29T16:55:52.386621Z", "start_waiting": "2014-12-15T21:15:38.236967Z", "board_size": 19, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg", "player_count": 0, "ranked": true }, { "id": 22281, "name": "OTL 2017 January Fast Correspondance Tournament", "director": { "id": 203945, "username": "timuzhti", "country": "au", "icon": "https://user-uploads.online-go.com/447482e4d1fddb5ea71da68f3a8a67d7-64.png", "ratings": { "version": 5, "overall": { "rating": 2349.2257971057606, "deviation": 67.61151467333107, "volatility": 0.06014167970887988 } }, "ranking": 34.68895179754466, "professional": false, "ui_class": "supporter" }, "description": "Fast correspondence. No pauses, no vacation. Offenders will be disqualified if they hold up the tournament.\n\nYou need to make ~10 moves per day on average. If there are any problems, please PM me, or try and raise a mod in the public chat.\n\nGood luck and have fun!", "schedule": null, "title": null, "tournament_type": "mcmahon", "handicap": 0, "rules": "japanese", "time_per_move": 9120, "time_control_parameters": { "time_control": "fischer", "initial_time": 172800, "max_time": 864000, "time_increment": 7200 }, "is_open": true, "exclude_provisional": true, "group": { "id": 865, "name": "OGS Teaching Ladder", "summary": "Teach the weaker, learn from the stronger", "require_invitation": true, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 654, "icon": "https://user-uploads.online-go.com/24ecd9d9f2f78df3b3e6b5f90732b0e3-64.png" }, "auto_start_on_max": false, "time_start": "2017-01-01T00:00:00Z", "players_start": 4, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": true, "exclusivity": "open", "started": "2017-01-01T00:00:03.050650Z", "ended": "2017-02-26T05:03:05.355922Z", "start_waiting": "2017-01-01T00:00:01.649660Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/24ecd9d9f2f78df3b3e6b5f90732b0e3-15.png", "player_count": 39, "ranked": true }, { "id": 133843, "name": "The Aji Tournament II", "director": { "id": 1864696, "username": "The Atari Union", "country": "in", "icon": "https://user-uploads.online-go.com/97a3545e27ab6dc2768c65861fc96dd0-64.png", "ratings": { "version": 5, "overall": { "rating": 275.4271587796327, "deviation": 83.19570494461763, "volatility": 0.059985568052562735 } }, "ranking": 5, "professional": false, "ui_class": "" }, "description": "All are open for more tournaments. For a beginner friendly group join the Aji Union Group (+25k Beginner)", "schedule": null, "title": null, "tournament_type": "swiss", "handicap": 0, "rules": "japanese", "time_per_move": 88451, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "pause_on_weekends": false, "time_increment": 86400, "initial_time": 259200, "max_time": 777600 }, "is_open": true, "exclude_provisional": false, "group": { "id": 15743, "name": "The Aji Union (+25k Beginners)", "summary": "This group is open for all and beginner friendly. If you do not wish to join this group try the The Opening Tournament on Oct 7th, it is called The Aji Tournament!", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 19, "icon": "https://user-uploads.online-go.com/4a4eaae21c0ccdddb0b5e26d211af026-64.png" }, "auto_start_on_max": true, "time_start": "2025-11-03T23:00:00Z", "players_start": 4, "first_pairing_method": "random", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": false, "exclusivity": "open", "started": "2025-11-03T23:00:22.745244Z", "ended": "2026-02-03T20:42:59.228928Z", "start_waiting": "2025-11-03T23:00:22.643989Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/4a4eaae21c0ccdddb0b5e26d211af026-15.png", "player_count": 5, "ranked": true }, { "id": 16011, "name": "Brighton Go Game!", "director": { "id": 282233, "username": "xuzhemin", "country": "cn", "icon": "https://secure.gravatar.com/avatar/b8113678829d483f01cab2e12fa4cfd2?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 1538.9564949855244, "deviation": 69.2327298003902, "volatility": 0.059980698846511936 } }, "ranking": 24.89693609746331, "professional": false, "ui_class": "" }, "description": "Brighton Go Game!", "schedule": null, "title": null, "tournament_type": "swiss", "handicap": 0, "rules": "japanese", "time_per_move": 434880, "time_control_parameters": { "time_control": "fischer", "initial_time": 259200, "max_time": 604800, "time_increment": 432000 }, "is_open": true, "exclude_provisional": false, "group": { "id": 259, "name": "Brighton Go Club", "summary": "Group for anyone who plays Go in Brighton, UK", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 42, "icon": "https://user-uploads.online-go.com/0fd5879c92ead717621f44b2844bc9c8-64.png" }, "auto_start_on_max": true, "time_start": "2016-03-26T22:11:00Z", "players_start": 4, "first_pairing_method": "random", "subsequent_pairing_method": "random", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": true, "exclusivity": "group", "started": "2016-03-27T04:37:29.766367Z", "ended": "2016-09-28T00:29:29.364403Z", "start_waiting": "2016-03-27T04:37:29.686888Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/0fd5879c92ead717621f44b2844bc9c8-15.png", "player_count": 4, "ranked": true }, { "id": 112382, "name": "第７期かおり杯棋聖戦Ｃリーグ３", "director": { "id": 687819, "username": "site_tmp", "country": "un", "icon": "https://secure.gravatar.com/avatar/c0dc1d7bd3ca7246ad298f30213416f4?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 1500, "deviation": 350, "volatility": 0.06 } }, "ranking": 24.303382182144386, "professional": false, "ui_class": "provisional" }, "description": "第７期かおり杯棋聖戦Ｓリーグ\n\nこのトーナメントは下記の方が参加予定です。空きがないため参加者となっていない方は参加することができません。\n\nThis tournament have already been “reserved” for members listed below. If you are not one among them, don’t click “Join this tournament!”. (There is no vacancy.)\n\nZenkyuさん、alemitraniさん、kabakenさん、tomtom-chanさん、せぽわわさん、onesound69さん", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "time_per_move": 45251, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "pause_on_weekends": false, "time_increment": 43200, "initial_time": 259200, "max_time": 259200 }, "is_open": true, "exclude_provisional": false, "group": { "id": 2969, "name": "かおり杯-World Kaori Cup-", "summary": "For every player who enjoy go game", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 294, "icon": "https://user-uploads.online-go.com/72d62682e212eead0d609e73a208e83d-64.png" }, "auto_start_on_max": false, "time_start": "2024-02-10T11:00:00Z", "players_start": 2, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": true, "exclusivity": "group", "started": "2024-02-10T11:00:39.577599Z", "ended": "2024-04-17T03:52:24.534400Z", "start_waiting": "2024-02-10T11:00:39.341360Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/72d62682e212eead0d609e73a208e83d-15.png", "player_count": 6, "ranked": true }, { "id": 16147, "name": "Polish Group Tournament - April 2016", "director": { "id": 117423, "username": "PawelD", "country": "pl", "icon": "https://secure.gravatar.com/avatar/fd36ab1329312b56976df28231035546?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 1530.7795187382387, "deviation": 64.44058955054818, "volatility": 0.05950079816728794 } }, "ranking": 24.773604679387187, "professional": false, "ui_class": "" }, "description": "Polish Group Tournament - April 2016", "schedule": null, "title": null, "tournament_type": "elimination", "handicap": 0, "rules": "japanese", "time_per_move": 89280, "time_control_parameters": { "time_control": "fischer", "initial_time": 259200, "max_time": 604800, "time_increment": 86400 }, "is_open": true, "exclude_provisional": true, "group": { "id": 7, "name": "Polish Go Players", "summary": "", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 454, "icon": "https://user-uploads.online-go.com/2bf108a559c752303005e32bfe754667-64.png" }, "auto_start_on_max": false, "time_start": "2016-04-15T10:00:00Z", "players_start": 4, "first_pairing_method": "slaughter", "subsequent_pairing_method": "slaughter", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": true, "exclusivity": "open", "started": "2016-04-15T10:00:15.293731Z", "ended": "2016-07-07T00:00:09.119447Z", "start_waiting": "2016-04-15T10:00:15.202578Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/2bf108a559c752303005e32bfe754667-15.png", "player_count": 4, "ranked": true }, { "id": 104018, "name": "Correspondence Weekly McMahon 19x19 2023-06-10 17:01", "director": { "id": 4, "username": "matburt", "country": "us", "icon": "https://secure.gravatar.com/avatar/1dff84686f829e8ef90e2e123f1baddf?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:20260406T170000Z\nRRULE:FREQ=WEEKLY", "active": true, "created": "2015-12-16T02:22:56.480465Z", "last_run": "2026-04-06T17:00:18.008263Z", "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": "2026-04-13T17:00:00Z", "base_points": "30.0" }, "title": null, "tournament_type": "s_mcmahon", "handicap": 0, "rules": "japanese", "time_per_move": 88451, "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": "2023-06-10T17:01:00.049978Z", "players_start": 10, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": true, "exclusivity": "open", "started": "2023-06-10T17:01:26.591281Z", "ended": "2025-01-07T16:16:13.433906Z", "start_waiting": "2023-06-10T17:01:24.992019Z", "board_size": 19, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_19.png", "player_count": 28, "ranked": true }, { "id": 24513, "name": "Live 19x19 Swiss Tournament 2017-02-07 16:30", "director": { "id": 4, "username": "matburt", "country": "us", "icon": "https://secure.gravatar.com/avatar/1dff84686f829e8ef90e2e123f1baddf?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:20260409T000000Z\nRRULE:FREQ=HOURLY;INTERVAL=4", "active": true, "created": "2014-12-20T06:30:39.250689Z", "last_run": "2026-04-09T00:00:04.650048Z", "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": "2026-04-09T04:00:00Z", "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": "2017-02-07T16:30:29.065290Z", "players_start": 6, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": false, "exclusivity": "open", "started": "2017-02-07T16:30:31.111598Z", "ended": "2017-02-07T17:41:53.624655Z", "start_waiting": "2017-02-07T16:30:30.771087Z", "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 } ] }
