List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=5388
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "name": "9x9 Mini League 1k-9k #123",
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                "username": "wiadp1",
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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",
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                "name": "9x9 Lovers",
                "summary": "A group for Go players who love the 9x9 board.",
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        {
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            "name": "3er Encuentro de Go en línea, abril 2020",
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                "id": 607938,
                "username": "kido.go.baduk",
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            "description": "Bienvenidos! Vamos a divertirnos y a jugar muy concentrados.",
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                "id": 4974,
                "name": "Taller de Go-Biblioteca de México",
                "summary": "Torneos todos los sábados a las 17:30 hrs (Ciudad de México)",
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            "name": "ROAD to DAN_Final Q-round",
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                "id": 1864146,
                "username": "컬리타임",
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            },
            "description": "This tournament is for players who want to play FAST CORRESPONDENCE.\n\nSingle Elimination for 18k~1k\n\nStart Time: 1 day\n\nIncrements Time (Ficher): 6 hours\n\nMax. Time: 2 days\n\nBE CAREFUL about the time settings.\n\nNo pause and No vacation, anyone who turns on the vacation mode or pauses a game, will be disqualified.  (If you notice a player violating the above rules, please notify the tournament administrator.)\n\nPlease send a messege to  <a href=\"https://online-go.com/user/view/1864146\" target=\"_blank\">컬리타임 or </a> <a href=\"https://online-go.com/player/1776211/\" target=\"_blank\">MAESTRO of BADUK </a> if you find that anyone or your opponent pauses or turns vacation mode on.\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 Mar. 1. 2026)\n\n*****\nDuplicate Participate Possible:\n\nYou can join more than one qualifier without any problem. If you earn multiple spots in the main tournament, you’ll keep one seed, and the remaining one(s) will go to the next eligible player in the qualifier.\n\n*****\nQualify Round Participant:\n\n Min. 2 to max. 4 players will advance to the finals. \n\n*****\nFeel free to give tips to your opponent after the game. It could be how we can improve Baduk/Go.\n\nDo not use AI\n\n-----\n<a href=\"https://online-go.com/tournament/137286\" target=\"_blank\">3rd Q-round: in progress </a>\n\n<a href=\"https://online-go.com/tournament/136125\" target=\"_blank\">2nd Q-round: Finished <a href=\"https://online-go.com/player/1882532/\" target=\"_blank\">Winner: HaHai </a>\n\n<a href=\"https://online-go.com/tournament/135235\" target=\"_blank\">1st Q-round: in progress </a>",
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                "name": "RollingStones : Global & 한국인",
                "summary": "한국인 대환영. 한국인과 글로벌 유저들을 위한 모임, We are connected all together.",
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            "id": 90785,
            "name": "PG SDK 2023 9x9",
            "director": {
                "id": 1162525,
                "username": "ants",
                "country": "un",
                "icon": "https://secure.gravatar.com/avatar/112db88f312658e329b4c4730bb7be3b?s=64&d=retro",
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            "description": "The Big One",
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            "title": null,
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                "name": "SDK Proving Grounds (Single Digit Kyu)",
                "summary": "The Official SDK Proving Grounds. This group spawned from the DDK Proving Grounds (Double Digit Kyu) group, & it's popularity. Here, SDK's can play against other SDK's (or Dan players that haven’t established a solid foothold in Dan land yet). If you get s",
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        },
        {
            "id": 119098,
            "name": "Servus Oida Handicap Tournament #1",
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                "id": 1285178,
                "username": "VikingKoala",
                "country": "eu",
                "icon": "https://user-uploads.online-go.com/aa9209bd96e427a6ff7e102b893f9af0-64.png",
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                },
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                "ui_class": "supporter"
            },
            "description": "Handicap McMahon Kyu Player Tournament",
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            },
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            "group": {
                "id": 5720,
                "name": "Outside Go7",
                "summary": "Die Gruppe für alle, die sonst im Go7 spielen.",
                "require_invitation": false,
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        },
        {
            "id": 59035,
            "name": "Fast Correspondence SDK 2020-04-23",
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                "username": "mlopezviedma",
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            "description": "Please, avoid delaying your games using the vacation feature.\n\nAnalysis is enabled mainly to allow the use of conditional moves.",
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                "summary": "Tournaments for people who like to play quick correspondence games.",
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        {
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            "group": {
                "id": 25,
                "name": "Go Basics",
                "summary": "A learning and teaching environment for players of all strengths with emphasis on tournaments and game reviews. Come teach, learn, and have fun!",
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        },
        {
            "id": 45295,
            "name": "おおかみクラス【 楽人リーグ戦 】",
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                "username": "さかもと",
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            "description": "おおかみクラス 対象棋力:4級~1級\n\n挨拶はしっかり! マナーを守って楽しく対局しましょう!\n\n定員の10名になりお申し込みができない場合は、 2月12日(火)19時までに、トーナメント掲示板 あるいは グループ管理者にお知らせください。 2回負け抜けトーナメントに変更いたします。",
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        {
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