Tournament List
List all tournaments or create a new tournament.
GET /api/v1/tournaments/?format=api&ordering=-player_count&page=5309
{ "count": 59608, "next": "https://online-go.com/api/v1/tournaments/?format=api&ordering=-player_count&page=5310", "previous": "https://online-go.com/api/v1/tournaments/?format=api&ordering=-player_count&page=5308", "results": [ { "id": 63682, "name": "事前シュミレーション10", "director": { "id": 785391, "username": "sum7", "country": "jp", "icon": "https://secure.gravatar.com/avatar/4c3c6cbe1cab7aa2013e7d7fb506b12a?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 1727.6497529896158, "deviation": 103.84892805540841, "volatility": 0.06001745520626601 } }, "ranking": 27.574404317226268, "professional": false, "ui_class": "" }, "description": "ようやくわかってきた", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": 0, "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": 1 }, "is_open": true, "exclude_provisional": false, "group": { "id": 6396, "name": "KAKA囲碁部Ⅱ", "summary": "", "require_invitation": false, "is_public": false, "admin_only_tournaments": false, "hide_details": true, "member_count": 22, "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg" }, "auto_start_on_max": false, "time_start": "2020-07-29T10:00:00Z", "players_start": 2, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": false, "exclusivity": "group", "started": "2020-07-29T09:40:03.758624Z", "ended": "2020-07-29T09:51:57.837232Z", "start_waiting": "2020-07-29T09:40:03.667583Z", "board_size": 19, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg", "player_count": 3, "ranked": true }, { "id": 63280, "name": "T2 Ultra tournament", "director": { "id": 747694, "username": "kingkaio", "country": "ua", "icon": "https://user-uploads.online-go.com/153fb07f8ce9121e748b2e51172936d2-64.png", "ratings": { "version": 5, "overall": { "rating": 1167.6804695413712, "deviation": 62.48738706337885, "volatility": 0.06012577810744558 } }, "ranking": 18.505561177652012, "professional": false, "ui_class": "" }, "description": "Go to our group page to read rules.\n\n<big>IF you are in another Ultra tournament you will be disqualified from both", "schedule": null, "title": null, "tournament_type": "elimination", "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": 5683, "name": "Tournaments Group", "summary": "A group for people who like tournaments.", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 66, "icon": "https://user-uploads.online-go.com/905cdf0c41d571282428b5d769b638c3-64.png" }, "auto_start_on_max": true, "time_start": "2020-09-19T14:48:00Z", "players_start": 3, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": true, "exclusivity": "group", "started": "2020-09-19T14:48:03.680023Z", "ended": "2020-11-09T11:35:28.545744Z", "start_waiting": "2020-09-19T14:48:03.369893Z", "board_size": 9, "active_round": null, "icon": "https://user-uploads.online-go.com/905cdf0c41d571282428b5d769b638c3-15.png", "player_count": 3, "ranked": true }, { "id": 59119, "name": "淘汰測試賽1", "director": { "id": 755968, "username": "謝老師", "country": "un", "icon": "https://secure.gravatar.com/avatar/55fdea7a4d340c79c47602aa98f30b74?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 2176.8933142899295, "deviation": 70.02656654711419, "volatility": 0.0600086352768646 } }, "ranking": 32.925221575626956, "professional": false, "ui_class": "" }, "description": "淘汰測試賽1", "schedule": null, "title": null, "tournament_type": "elimination", "handicap": 0, "rules": "japanese", "time_per_move": 10, "time_control_parameters": { "system": "absolute", "time_control": "absolute", "speed": "live", "pause_on_weekends": false, "total_time": 900 }, "is_open": true, "exclude_provisional": false, "group": { "id": 5110, "name": "香港兒童棋院", "summary": "", "require_invitation": false, "is_public": false, "admin_only_tournaments": false, "hide_details": false, "member_count": 108, "icon": "https://user-uploads.online-go.com/d6eb3e6028ad3f005423be2afc2e5d0e-64.png" }, "auto_start_on_max": false, "time_start": "2020-04-16T13:27:00Z", "players_start": 3, "first_pairing_method": "random", "subsequent_pairing_method": "random", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": false, "exclusivity": "group", "started": "2020-04-16T13:27:19.050387Z", "ended": "2020-04-16T14:08:16.363881Z", "start_waiting": "2020-04-16T13:27:18.834533Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/d6eb3e6028ad3f005423be2afc2e5d0e-15.png", "player_count": 3, "ranked": true }, { "id": 140117, "name": "Correspondence 13x13 RoundRobin 2026-05-11 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 Site-wide Tournament", "schedule": { "id": 7, "name": "Correspondence 13x13 RoundRobin", "rrule": "DTSTART:20260510T190000Z\nRRULE:FREQ=DAILY;INTERVAL=3", "active": true, "created": "2015-02-20T06:00:14.582400Z", "last_run": "2026-05-10T19:00:49.863592Z", "lead_time_seconds": 86400, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "size": 13, "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": 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": "2026-05-13T19:00:00Z", "base_points": "10.0" }, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "time_per_move": 90782, "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": "2026-05-11T19:00:49.847797Z", "players_start": 4, "first_pairing_method": "slaughter", "subsequent_pairing_method": "slaughter", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": true, "exclusivity": "open", "started": null, "ended": null, "start_waiting": null, "board_size": 13, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_13.png", "player_count": 2, "ranked": true }, { "id": 140078, "name": "19x19 Open D.E. Cup #174", "director": { "id": 1015644, "username": "wiadp1", "country": "pl", "icon": "https://user-uploads.online-go.com/253ed3da1cc83d36ac1e5313f959f54d-64.png", "ratings": { "version": 5, "overall": { "rating": 1255.1325092914733, "deviation": 70.70388156803322, "volatility": 0.060218187290626925 } }, "ranking": 20.177497600621148, "professional": false, "ui_class": "" }, "description": "Double-Elimination tournament for everyone. It will be started as soon as 8 players will join it.\n\nPrevious winners: https://online-go.com/group/12599", "schedule": null, "title": null, "tournament_type": "double_elimination", "handicap": 0, "rules": "japanese", "time_per_move": 88451, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "time_increment": 86400, "initial_time": 259200, "max_time": 604800 }, "is_open": true, "exclude_provisional": false, "group": { "id": 12599, "name": "GO Special Tournaments", "summary": "", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 72, "icon": "https://user-uploads.online-go.com/02eb72b0992a3db1053a7c08c080d81b-64.png" }, "auto_start_on_max": true, "time_start": "2026-05-10T21:05:00Z", "players_start": 8, "first_pairing_method": "random", "subsequent_pairing_method": "random", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": true, "exclusivity": "open", "started": null, "ended": null, "start_waiting": null, "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/02eb72b0992a3db1053a7c08c080d81b-15.png", "player_count": 2, "ranked": true }, { "id": 140058, "name": "9x9 Mini League 1k-9k #174", "director": { "id": 1015644, "username": "wiadp1", "country": "pl", "icon": "https://user-uploads.online-go.com/253ed3da1cc83d36ac1e5313f959f54d-64.png", "ratings": { "version": 5, "overall": { "rating": 1255.1325092914733, "deviation": 70.70388156803322, "volatility": 0.060218187290626925 } }, "ranking": 20.177497600621148, "professional": false, "ui_class": "" }, "description": "Special league for players between 9kyu and 1kyu. Tournament will be started as soon as 5 players will join it.\n\nPrevious winners: https://online-go.com/group/10842", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "time_per_move": 95543, "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": 3524, "name": "9x9 Lovers", "summary": "A group for Go players who love the 9x9 board.", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 697, "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-64.png" }, "auto_start_on_max": true, "time_start": "2026-05-10T19:05:00Z", "players_start": 5, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 21, "max_ranking": 29, "analysis_enabled": true, "exclusivity": "open", "started": null, "ended": null, "start_waiting": null, "board_size": 9, "active_round": null, "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-15.png", "player_count": 2, "ranked": true }, { "id": 139867, "name": "13x13 Mini League 2d-9k #15", "director": { "id": 1688153, "username": "Mittelmark", "country": "de", "icon": "https://user-uploads.online-go.com/f86d53e1b08ba490783eac759518a835-64.png", "ratings": { "version": 5, "overall": { "rating": 1073.2840100977699, "deviation": 66.95187850935433, "volatility": 0.06002501957710229 } }, "ranking": 16.55410507658349, "professional": false, "ui_class": "supporter" }, "description": "A little round robin with 4 games for everyone on a 13x13 board with (not too) relaxed time settings.", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "time_per_move": 93703, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "pause_on_weekends": true, "time_increment": 86400, "initial_time": 432000, "max_time": 1209600 }, "is_open": true, "exclude_provisional": true, "group": { "id": 161, "name": "13x13", "summary": "Like to play on a 13 x 13 board?", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 59, "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg" }, "auto_start_on_max": true, "time_start": "2026-05-15T10:00:00Z", "players_start": 5, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 21, "max_ranking": 31, "analysis_enabled": false, "exclusivity": "open", "started": null, "ended": null, "start_waiting": null, "board_size": 13, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg", "player_count": 2, "ranked": true }, { "id": 139732, "name": "Triêm Tây 2", "director": { "id": 1863389, "username": "zekat", "country": "vn", "icon": "https://user-uploads.online-go.com/e6b06169dd41e0817858282d5c2c9ee3-64.png", "ratings": { "version": 5, "overall": { "rating": 1837.3839021893393, "deviation": 250, "volatility": 0.06 } }, "ranking": 29.0, "professional": false, "ui_class": "provisional" }, "description": "Triêm Tây 2026", "schedule": null, "title": null, "tournament_type": "mcmahon", "handicap": 0, "rules": "japanese", "time_per_move": 35, "time_control_parameters": { "system": "byoyomi", "time_control": "byoyomi", "speed": "live", "main_time": 600, "period_time": 30, "periods": 5 }, "is_open": true, "exclude_provisional": false, "group": { "id": 16381, "name": "Triêm Tây Go Club", "summary": "Go players from Triêm Tây village", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 2, "icon": "https://user-uploads.online-go.com/2abf94954d6e10569a9c2ab0a2d31148-64.png" }, "auto_start_on_max": false, "time_start": "2026-04-28T06:00:00Z", "players_start": 2, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": false, "exclusivity": "group", "started": "2026-04-28T06:00:35.130200Z", "ended": "2026-04-28T06:16:12.825463Z", "start_waiting": "2026-04-28T06:00:35.074988Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/2abf94954d6e10569a9c2ab0a2d31148-15.png", "player_count": 2, "ranked": false }, { "id": 139690, "name": "Meijin Main 2019 Title Match - Board 5", "director": { "id": 40318, "username": "gamesorry", "country": "cn", "icon": "https://secure.gravatar.com/avatar/801cba34b77e0105326c402cc482cb09?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 2004.4188438214221, "deviation": 67.71437067217448, "volatility": 0.06015576961047741 } }, "ranking": 31.014313855840236, "professional": false, "ui_class": "supporter" }, "description": "<!-- \nMeijin Main 2019 Title Match - Board 1\n-->\n\nTitle Holder: \n<a style=\"color:green\" href='https://online-go.com/player/43936'>Sadaharu [Meijin] x1+1</a>\n\n<table style=\"text-align:center;empty-cells:hide;table-layout:fixed;border:1px solid\">\n<tr>\n\t<td style=\"text-align:center\"><b>Edition</b></td>\n\t<td style=\"text-align:center\"><b>Title</b></td>\n\t<td style=\"text-align:center\"><b>Class</b></td>\n\t<td style=\"text-align:center\"><b>Year</b></td>\n\t<td style=\"text-align:center\"><b>Player 1</b></td>\n\t<td style=\"text-align:center\"><b>Player 2</b></td>\n\t<td></td>\n\t<td></td>\n\t<td><b>Matches</b></td>\n\t<td></td>\n\t<td></td>\n</tr>\n<tr>\n\t<td>13th</td>\n\t<td style=\"color:green\">Meijin</td>\n\t<td>Main</td>\n\t<td>2019</td>\n\t<td><a style=\"color:green\" href='https://online-go.com/player/43936'>Sadaharu [Meijin]</a></td>\n\t<td><a href='https://online-go.com/user/view/418737'>Puffin888 [5d]</a></td>\n\t<td><a href='https://online-go.com/tournament/139686'>Board 1</a></td>\n\t<td><a href='https://online-go.com/tournament/139687'>Board 2</a></td>\n\t<td><a href='https://online-go.com/tournament/139688'>Board 3</a></td>\n\t<td><a href='https://online-go.com/tournament/139689'>Board 4</a></td>\n\t<td><a href='https://online-go.com/tournament/139690'>Board 5</a></td>\n</tr>\n</table>\n\n\nTitle Tournament: <a style=\"color:green\" href='https://online-go.com/tournament/43369'>Meijin Main Title Tournament 2019</a>\n\nNote:\n- Bots and use of AI are prohibited in this tournament and violators will be disqualified.", "schedule": null, "title": null, "tournament_type": "elimination", "handicap": 0, "rules": "japanese", "time_per_move": 91187, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "pause_on_weekends": true, "time_increment": 86400, "initial_time": 604800, "max_time": 604800 }, "is_open": true, "exclude_provisional": true, "group": { "id": 515, "name": "OGS Title Tournaments", "summary": "Would you like to compete with hundreds of players in epic tournaments and become the Honinbo, Meijin, Kisei, Tianyuan, Mingren or Kuksu? Join us!", "require_invitation": false, "is_public": true, "admin_only_tournaments": true, "hide_details": false, "member_count": 2978, "icon": "https://user-uploads.online-go.com/e172c7a14ec09bda65360d6b80884e67-64.png" }, "auto_start_on_max": false, "time_start": "2026-06-27T05:00:00Z", "players_start": 2, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": true, "exclusivity": "invite", "started": null, "ended": null, "start_waiting": null, "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/e172c7a14ec09bda65360d6b80884e67-15.png", "player_count": 2, "ranked": true }, { "id": 139689, "name": "Meijin Main 2019 Title Match - Board 4", "director": { "id": 40318, "username": "gamesorry", "country": "cn", "icon": "https://secure.gravatar.com/avatar/801cba34b77e0105326c402cc482cb09?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 2004.4188438214221, "deviation": 67.71437067217448, "volatility": 0.06015576961047741 } }, "ranking": 31.014313855840236, "professional": false, "ui_class": "supporter" }, "description": "<!-- \nMeijin Main 2019 Title Match - Board 1\n-->\n\nTitle Holder: \n<a style=\"color:green\" href='https://online-go.com/player/43936'>Sadaharu [Meijin] x1+1</a>\n\n<table style=\"text-align:center;empty-cells:hide;table-layout:fixed;border:1px solid\">\n<tr>\n\t<td style=\"text-align:center\"><b>Edition</b></td>\n\t<td style=\"text-align:center\"><b>Title</b></td>\n\t<td style=\"text-align:center\"><b>Class</b></td>\n\t<td style=\"text-align:center\"><b>Year</b></td>\n\t<td style=\"text-align:center\"><b>Player 1</b></td>\n\t<td style=\"text-align:center\"><b>Player 2</b></td>\n\t<td></td>\n\t<td></td>\n\t<td><b>Matches</b></td>\n\t<td></td>\n\t<td></td>\n</tr>\n<tr>\n\t<td>13th</td>\n\t<td style=\"color:green\">Meijin</td>\n\t<td>Main</td>\n\t<td>2019</td>\n\t<td><a style=\"color:green\" href='https://online-go.com/player/43936'>Sadaharu [Meijin]</a></td>\n\t<td><a href='https://online-go.com/user/view/418737'>Puffin888 [5d]</a></td>\n\t<td><a href='https://online-go.com/tournament/139686'>Board 1</a></td>\n\t<td><a href='https://online-go.com/tournament/139687'>Board 2</a></td>\n\t<td><a href='https://online-go.com/tournament/139688'>Board 3</a></td>\n\t<td><a href='https://online-go.com/tournament/139689'>Board 4</a></td>\n\t<td><a href='https://online-go.com/tournament/139690'>Board 5</a></td>\n</tr>\n</table>\n\n\nTitle Tournament: <a style=\"color:green\" href='https://online-go.com/tournament/43369'>Meijin Main Title Tournament 2019</a>\n\nNote:\n- Bots and use of AI are prohibited in this tournament and violators will be disqualified.", "schedule": null, "title": null, "tournament_type": "elimination", "handicap": 0, "rules": "japanese", "time_per_move": 91187, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "pause_on_weekends": true, "time_increment": 86400, "initial_time": 604800, "max_time": 604800 }, "is_open": true, "exclude_provisional": true, "group": { "id": 515, "name": "OGS Title Tournaments", "summary": "Would you like to compete with hundreds of players in epic tournaments and become the Honinbo, Meijin, Kisei, Tianyuan, Mingren or Kuksu? Join us!", "require_invitation": false, "is_public": true, "admin_only_tournaments": true, "hide_details": false, "member_count": 2978, "icon": "https://user-uploads.online-go.com/e172c7a14ec09bda65360d6b80884e67-64.png" }, "auto_start_on_max": false, "time_start": "2026-06-27T05:00:00Z", "players_start": 2, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": true, "exclusivity": "invite", "started": null, "ended": null, "start_waiting": null, "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/e172c7a14ec09bda65360d6b80884e67-15.png", "player_count": 2, "ranked": true } ] }
