List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-max_ranking&page=476
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-max_ranking&page=475",
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            "name": "Southampton Dec2025 13x13 Tournament v4",
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                "username": "SMS-Mr.d",
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            "id": 125076,
            "name": "19x19 New Zealand Open D.E. #21",
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                "id": 178104,
                "username": "dexonsmith",
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                "icon": "https://user-uploads.online-go.com/448e520df4ffd817b1802a450a4c9058-64.png",
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            "description": "All players welcome. 8 players. Starts only when full.\n\nNew Zealand rules. 19x19 board. Even games. Double-elimination.\n\nFor more tournaments and ladders with New Zealand rules: <https://online-go.com/group/14024>",
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            "ended": "2026-01-11T09:32:56.009263Z",
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        {
            "id": 136269,
            "name": "19x19 Open League #117",
            "director": {
                "id": 1015644,
                "username": "wiadp1",
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                "icon": "https://user-uploads.online-go.com/253ed3da1cc83d36ac1e5313f959f54d-64.png",
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            "description": "Open league for everyone. Tournament will be started as soon as 10 players will join it.\n\nPrevious winners: https://online-go.com/group/12599",
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                "name": "GO Special Tournaments",
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            "id": 137136,
            "name": "Handicap Arena 2026 - 013",
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                "username": "Gia",
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            },
            "description": "Part of an arena tournament - 2026. For details, rules and arena-standings see the group page.\n\nThe tournament will start as soon as it is full (10 players).",
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            "handicap": -1,
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                "name": "Handicap Arena",
                "summary": "Organising arena-type handicap correspondence tournaments.",
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                "is_public": true,
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            "id": 135517,
            "name": "第六回ほたて会[第二回寒風戦]高段リーグ",
            "director": {
                "id": 1921641,
                "username": "ほたて囲碁教室2",
                "country": "jp",
                "icon": "https://user-uploads.online-go.com/651c2aebc8ac9e8fef162798dd97d08a-64.png",
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            "description": "日時:令和7年12月28日(日)16:00~20:00\n\n※20:00には終了できますようご協力お願い致します\n\n対局開始方法:お時間になりますと、自動で対局が開始されます。OGSを開いてお待ち下さい。\n\n対局方法:総当たり戦(同時対局)\n\n※全ての対局をまんべんなく打ち進めて頂くようご協力をお願いいたします\n\n着手方法:盤面ワンクリックで着手(打ち間違いに気をつけて下さい)or 盤面に石を打って画面右上のユーザー名下にある「着手決定」をクリック ※皆様のOGSの【通信対局】設定により変わります\n\n※着手すると【自動で自分の手番の他の対局画面に切り替わります】。もし、切り替わらない場合は、【ホーム画面】に戻り、対局一覧から自分の手番の対局を選択するか、画面右上のベルマーク(青色か緑色になっており、右に数字の吹き出しがある)をクリックすると、自分の手番の対局画面に移動します。こちらもOGSの設定で変更可能です。\n\nzoom:使用しません\n\n飲食:自由\n\n対局中に席を離れても大丈夫です\n\n解散方法:全ての対局が終わり次第、各自終了です\n\n結果:この画面に表示されます and ほたて先生から報告します。\n\n↓↓このリーグの参加者は↓↓\n\nnissi15 愛媛県 6段\n\nさわら 岡山県 5段\n\nyuto99t 岡山県 5段\n\nTatsuro Tsuzura 香川県 4段\n\nissoh 高知県 3段",
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            "title": null,
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            "name": "24.10 практика для факультатива",
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                "id": 512029,
                "username": "Павел Науменко",
                "country": "001",
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            "description": "Участники только слушатели факультатива на занятии 24.10",
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                "name": "Го-клуб ИТМО",
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        {
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                "id": 3524,
                "name": "9x9 Lovers",
                "summary": "A group for Go players who love the 9x9 board.",
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        {
            "id": 122078,
            "name": "Meet Peppa Pig's family and Go game❕",
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                "username": "Arrow A6 anti-",
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                },
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            },
            "description": "<H2><I><a Href=\"https://online-go.com/group/13797\"><big><span  style=\"color:pink;\">W</big><span  style=\"color:yellow;\">e</span><big><big><span  style=\"color: skyblue;\">l</span></big></big><span style=\"color: springgreen;\">c</span><span style=\"color:red;\">o</span><span  style=\"color:orange;\">m</span><span style=\"color:white;\">e</span> <big><big>j</big></big>o<big>i</big>n Us</I><h2><a Href=\"https://online-go.com/group/13797\"><span style=\"color:gold;\">Go Advance forward forever<a Href=\"https://online-go.com/group/13797\"><I><IMG src=\"https://b0c2ddc39d13e1c0ddad-93a52a5bc9e7cc06050c1a999beb3694.ssl.cf1.rackcdn.com/9682e94fbb47d2ccab4998f738b6b042-128.png\"></a></h2>\n\n<I><Big><Big><big><span  style=\"color:pink;\">P</big></Big></big>eppa Pig's <big><big>🐷🐷🐷🐷🐷🐷 </big></big>Family<I>\n\n<p>\n<embed src=\"https://www.youtube.com/embed/kyhLMS8sSjM\"width=\"320\" height=\"180\">\n</p>\n\n\n<p>\n<embed src=\"https://www.youtube.com/embed/cbbxz17pRKM\"width=\"320\" height=\"180\">\n</p>\n\n<a href=\"https://info.flagcounter.com/Y6Hv\"><img src=\"https://s11.flagcounter.com/map/Y6Hv/size_t/txt_FF03F7/border_CCCCCC/pageviews_1/viewers_0/flags_0/\" alt=\"Flag Counter\" border=\"0\"></a>",
            "schedule": null,
            "title": null,
            "tournament_type": "mcmahon",
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                "initial_time": 259200,
                "max_time": 604800
            },
            "is_open": true,
            "exclude_provisional": true,
            "group": {
                "id": 13797,
                "name": " 无间勤碁术化  Go Advance forward forever",
                "summary": "欢迎围棋爱好者来到属于您的园地\n\n\n          In Your 💖 Go to Universes everywhere",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
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                "icon": "https://user-uploads.online-go.com/175d0b2a36101a52411db11b4d096829-64.png"
            },
            "auto_start_on_max": false,
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            "subsequent_pairing_method": "strength",
            "min_ranking": 5,
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            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2024-11-13T15:00:01.624365Z",
            "ended": "2025-10-26T02:49:07.693170Z",
            "start_waiting": "2024-11-13T15:00:00.201867Z",
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            "player_count": 27,
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        {
            "id": 136322,
            "name": "Training Tuesday",
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