List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=5509
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "name": "9x9 Mini League 1k-9k #90",
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                "username": "wiadp1",
                "country": "pl",
                "icon": "https://user-uploads.online-go.com/253ed3da1cc83d36ac1e5313f959f54d-64.png",
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            "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,
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                "name": "9x9 Lovers",
                "summary": "A group for Go players who love the 9x9 board.",
                "require_invitation": false,
                "is_public": true,
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                "hide_details": false,
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            "started": "2023-10-18T13:48:50.872870Z",
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            "id": 138020,
            "name": "FNRRT: SPECIAL for High Kyu - Round Robin",
            "director": {
                "id": 1872546,
                "username": "Sch-Mentor",
                "country": "001",
                "icon": "https://user-uploads.online-go.com/41804ae38abc71e0bea5040b313b01ec-64.png",
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                        "volatility": 0.06
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                "ranking": 24.303382182144386,
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            "description": "Things to keep in mind:\n* Use the conditional move feature to speed up the game.\n* No pauses and no vacations are allowed; if any player switch it on, then they will be disqualified without further notice or reminder (unless they have an urgent matter to attend to and give notice to TD).\n* Disqualification will occur automatically by the site if a player loses by timeout (if they have more than 50 active games they will be disqualified by the TD too).\n* If disqualified by the TD, all outstanding games will be forfeited, which will affect the player’s ranking.\n* If you find that a player pauses the game, enters vacation mode or has bad behavior, please send a message to the TD.\n* And last but not least: no weekends, just make your move; it’s a tournament, my friend!",
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            },
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            "group": {
                "id": 15509,
                "name": "Fast and narrow rank range tournaments",
                "summary": "Tournaments for people who like to play within narrow rank ranges and fast correspondence games.",
                "require_invitation": true,
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                "admin_only_tournaments": true,
                "hide_details": false,
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                "icon": "https://user-uploads.online-go.com/fb0e7d5660cf5ea61609ed14abdc9bfa-64.png"
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            "time_start": "2026-03-30T23:33:00Z",
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            "subsequent_pairing_method": "slide",
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            "started": "2026-03-24T09:26:08.079528Z",
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            "id": 116906,
            "name": "13x13 New Zealand 15k-1k League #2",
            "director": {
                "id": 178104,
                "username": "dexonsmith",
                "country": "ca",
                "icon": "https://user-uploads.online-go.com/448e520df4ffd817b1802a450a4c9058-64.png",
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                "ui_class": "supporter"
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            "description": "15k-1k. 5 players. Starts only when full.\n\nNew Zealand rules. 13x13 board. Even games. Round robin.\n\nFor more tournaments and ladders with New Zealand rules: <https://online-go.com/group/14024>",
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            "title": null,
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                "id": 14024,
                "name": "New Zealand Ladders",
                "summary": "Group for ladders and tournaments that use New Zealand rules.",
                "require_invitation": false,
                "is_public": true,
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            "auto_start_on_max": true,
            "time_start": "2024-06-25T03:14:00Z",
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            "subsequent_pairing_method": "slaughter",
            "min_ranking": 15,
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            "exclusivity": "open",
            "started": "2024-07-02T08:28:06.899089Z",
            "ended": "2024-08-20T10:55:26.385160Z",
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        {
            "id": 133802,
            "name": "The Battlefield of Single Digit",
            "director": {
                "id": 1776211,
                "username": "MAESTRO of BADUK",
                "country": "kr",
                "icon": "https://user-uploads.online-go.com/2de231e0b190d65fe2d68b51bd7b4b2a-64.png",
                "ratings": {
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                },
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                "professional": false,
                "ui_class": ""
            },
            "description": "This is for players who want to enjoy fast correspondence match \n\nSwiss league for 10k~1k\n\nStart time: 1day 12 hours\n\nFischer:: 6 hours\n\nMax. Time: 3 days\n\n*****\nRestricted Rank: 1k \n\nPlayers who reached 1 dan within 30 days before the tournament announcement date but have since dropped back to 1k are not eligible to participate. (Reference date: 30 days prior to October 27)\n\n*****\nThe winner will receive a seeded invitation to the main tournament of Road to Dan, a regular tournament hosted by the RS group. \n\n(We recommend you to be a member of the RS group to receive an invitation. According to the OGS system, we cannot send invitations to non-members.)\n\n*****\nPlease be careful below the rule;\n\nNO PAUSE & NO VACATION, anyone who takes on the vacation or pauses a game, will be disqualified.\n\nPlease send the tournament director a message if you find that your opponent pauses or turns vacation mode on. \n*****",
            "schedule": null,
            "title": null,
            "tournament_type": "swiss",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 22626,
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                "time_increment": 21600,
                "initial_time": 129600,
                "max_time": 259200
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 15815,
                "name": "RollingStones : Global & 한국인",
                "summary": "한국인 대환영. 한국인과 글로벌 유저들을 위한 모임, We are connected all together.",
                "require_invitation": false,
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                "hide_details": false,
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            "time_start": "2025-11-03T17:00:00Z",
            "players_start": 4,
            "first_pairing_method": "strength",
            "subsequent_pairing_method": "slide",
            "min_ranking": 20,
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            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2025-11-02T17:00:14.467608Z",
            "ended": "2026-03-26T05:54:50.057824Z",
            "start_waiting": "2025-11-02T17:00:14.170964Z",
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            "ranked": true
        },
        {
            "id": 119544,
            "name": "Tiger mouth - second edition",
            "director": {
                "id": 753453,
                "username": "DocGiovanni",
                "country": "it",
                "icon": "https://user-uploads.online-go.com/9c1369e5f56df490970039645e52a490-64.png",
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                },
                "ranking": 5,
                "professional": false,
                "ui_class": ""
            },
            "description": "Double elimination tournament. Correspondance.3 moves/day at least.",
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            "title": null,
            "tournament_type": "swiss",
            "handicap": -1,
            "rules": "japanese",
            "time_per_move": 261251,
            "time_control_parameters": {
                "system": "byoyomi",
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                "speed": "correspondence",
                "pause_on_weekends": true,
                "main_time": 259200,
                "period_time": 259200,
                "periods": 3
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            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 93,
                "name": "GO Italia",
                "summary": "Il gruppo per i giocatori di GO italiani.",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
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                "icon": "https://user-uploads.online-go.com/02421a9877e5d65462bc65fcc7f0fd0e-64.png"
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            "auto_start_on_max": false,
            "time_start": "2024-10-11T21:00:00Z",
            "players_start": 10,
            "first_pairing_method": "slaughter",
            "subsequent_pairing_method": "strength",
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            "analysis_enabled": true,
            "exclusivity": "open",
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            "ended": "2025-10-29T16:18:07.485936Z",
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            "icon": "https://user-uploads.online-go.com/02421a9877e5d65462bc65fcc7f0fd0e-15.png",
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        {
            "id": 123762,
            "name": "9x9 Mini League 1k-9k #135",
            "director": {
                "id": 1015644,
                "username": "wiadp1",
                "country": "pl",
                "icon": "https://user-uploads.online-go.com/253ed3da1cc83d36ac1e5313f959f54d-64.png",
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                "professional": false,
                "ui_class": ""
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            "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,
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                "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": 716,
                "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-64.png"
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            "auto_start_on_max": true,
            "time_start": "2025-01-12T20:00:00Z",
            "players_start": 5,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 21,
            "max_ranking": 29,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2025-01-12T11:22:08.431821Z",
            "ended": "2025-01-29T07:52:23.233171Z",
            "start_waiting": "2025-01-12T11:22:08.303531Z",
            "board_size": 9,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/524010f9e013f409bdc23336febde936-15.png",
            "player_count": 5,
            "ranked": true
        },
        {
            "id": 105118,
            "name": "Mid-Speed Open (9x9) #8",
            "director": {
                "id": 1303195,
                "username": "eaglejoy",
                "country": "001",
                "icon": "https://user-uploads.online-go.com/d4b7c1948ffe6ed5f80f075d40a13547-64.png",
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                },
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            },
            "description": "<h2>Rules</h2>\n\n<ul>\n\n\n<li>Pausing or Vacation setting is looked on as resigning all the rest games, resulting in \"Lost by Disqualified\".</li>\n\n</ul>\n\n<h3>Attention</h3>\n\n<ul>\n\n<li>Please don't let the <strong>apologyless</strong> time-out happen; if no time, resign.</li>\n\n</ul>",
            "schedule": null,
            "title": null,
            "tournament_type": "swiss",
            "handicap": 0,
            "rules": "japanese",
            "time_per_move": 31848,
            "time_control_parameters": {
                "system": "canadian",
                "time_control": "canadian",
                "speed": "correspondence",
                "pause_on_weekends": true,
                "main_time": 86400,
                "period_time": 86400,
                "stones_per_period": 3
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 12936,
                "name": "Mid-speed",
                "summary": "Middle speed matches, not so hurry, not so slow.",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": true,
                "hide_details": false,
                "member_count": 21,
                "icon": "https://user-uploads.online-go.com/beac7517f2a38056032aeec2064d3ace-64.png"
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            "time_start": "2023-07-15T12:00:00Z",
            "players_start": 6,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
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            "max_ranking": 29,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2023-07-13T21:26:12.100445Z",
            "ended": "2023-08-10T06:53:26.340756Z",
            "start_waiting": "2023-07-13T21:26:11.974372Z",
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            "icon": "https://user-uploads.online-go.com/beac7517f2a38056032aeec2064d3ace-15.png",
            "player_count": 6,
            "ranked": true
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        {
            "id": 99741,
            "name": "7-day correspondence 13x13",
            "director": {
                "id": 1185877,
                "username": "TranBao",
                "country": "vn",
                "icon": "https://user-uploads.online-go.com/67d7d186b94fc74fe63b005140aead0c-64.png",
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                "professional": false,
                "ui_class": ""
            },
            "description": "Have fun. All games end within 7 days. Usually, a 13x13 game result can be decided after 60 moves, so make sure you can play at least 4 moves per day ;)",
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            "time_per_move": 10225,
            "time_control_parameters": {
                "system": "absolute",
                "time_control": "absolute",
                "speed": "correspondence",
                "pause_on_weekends": false,
                "total_time": 604800
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            "exclude_provisional": true,
            "group": {
                "id": 508,
                "name": "Fast Correspondence",
                "summary": "Tournaments for people who like to play quick correspondence games.",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 831,
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            "players_start": 4,
            "first_pairing_method": "random",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 15,
            "max_ranking": 29,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2023-02-06T13:00:58.253384Z",
            "ended": "2023-03-13T13:02:22.592439Z",
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        {
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            "name": "crizzly's mini-tournament",
            "director": {
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                "username": "crizzly",
                "country": "de",
                "icon": "https://secure.gravatar.com/avatar/667431622ed6e002950c307ce108c3e8?s=64&d=retro",
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                "time_increment": 86400
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            "exclude_provisional": false,
            "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": 386,
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