List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=-board_size&page=2393
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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    "next": "https://online-go.com/api/v1/tournaments?format=api&ordering=-board_size&page=2394",
    "previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=-board_size&page=2392",
    "results": [
        {
            "id": 1303,
            "name": "RaikB's mini-tournament",
            "director": {
                "id": 20675,
                "username": "RaikB",
                "country": "de",
                "icon": "https://secure.gravatar.com/avatar/3d9fb2e977ccdddcc8efeb8fc6efc3ae?s=64&d=retro",
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            "time_per_move": 86400,
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                "time_control": "fischer",
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            },
            "is_open": true,
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            "group": {
                "id": 78,
                "name": "OGS Mini Tournaments",
                "summary": "The home for all of the old OGS mini tournaments",
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                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
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            "max_ranking": 24,
            "analysis_enabled": false,
            "exclusivity": "open",
            "started": "2011-03-15T23:14:48Z",
            "ended": "2011-03-15T22:14:48Z",
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            "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
            "player_count": 0,
            "ranked": true
        },
        {
            "id": 109748,
            "name": "2023kk",
            "director": {
                "id": 1467300,
                "username": "柘城ff",
                "country": "un",
                "icon": "https://secure.gravatar.com/avatar/e3ee14f0f69bfea77b82b6103b1ec181?s=64&d=retro",
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                    "version": 5,
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                        "rating": 1500,
                        "deviation": 350,
                        "volatility": 0.06
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                },
                "ranking": 24.303382182144386,
                "professional": false,
                "ui_class": "provisional"
            },
            "description": "。。。。。。。。。。",
            "schedule": null,
            "title": null,
            "tournament_type": "mcmahon",
            "handicap": -1,
            "rules": "japanese",
            "time_per_move": 31,
            "time_control_parameters": {
                "system": "fischer",
                "time_control": "fischer",
                "speed": "live",
                "pause_on_weekends": false,
                "time_increment": 30,
                "initial_time": 120,
                "max_time": 300
            },
            "is_open": true,
            "exclude_provisional": false,
            "group": {
                "id": 28,
                "name": "Teaching League",
                "summary": "The teaching league is a group for players who want to improve their game by playing, as well as by teaching weaker players.\n\nQuick rule summary: no handicap, moderate time settings, stronger player creates a review.\n\nPlease add \"TL\" to the game name.",
                "require_invitation": false,
                "is_public": true,
                "admin_only_tournaments": false,
                "hide_details": false,
                "member_count": 4483,
                "icon": "https://user-uploads.online-go.com/b1a8e87e33263bc92ccdc6303c0c184c-64.png"
            },
            "auto_start_on_max": true,
            "time_start": "2023-11-18T15:00:00Z",
            "players_start": 4,
            "first_pairing_method": "slide",
            "subsequent_pairing_method": "slaughter",
            "min_ranking": 5,
            "max_ranking": 38,
            "analysis_enabled": true,
            "exclusivity": "open",
            "started": "2024-01-18T13:22:55.919724Z",
            "ended": "2024-01-18T13:33:23.163669Z",
            "start_waiting": "2024-01-18T13:22:55.817339Z",
            "board_size": 19,
            "active_round": null,
            "icon": "https://user-uploads.online-go.com/b1a8e87e33263bc92ccdc6303c0c184c-15.png",
            "player_count": 4,
            "ranked": true
        },
        {
            "id": 109520,
            "name": "2023.NOV 19X19 RoundRobin 4K~1K",
            "director": {
                "id": 1161013,
                "username": "朵兒普拉斯-doorplus-",
                "country": "_United_Nations",
                "icon": "https://user-uploads.online-go.com/7c935550f93ff5eb3f3e93239454342f-64.png",
                "ratings": {
                    "version": 5,
                    "overall": {
                        "rating": 1151.0937500744108,
                        "deviation": 63.06821920011851,
                        "volatility": 0.05991569077389414
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                },
                "ranking": 18.174361096243295,
                "professional": false,
                "ui_class": ""
            },
            "description": "Attention: Time Setting for the Game.                               \n                                                                  \n⭐️⭐️⭐️⭐️⭐️ When all players(who are not disqualified) have finished the games, but there are still some games continued by players who were disqualified by timeout. In order to keep the tournament going, the games with the disqualified players will be TERMINATED by the tournament director.                                                        \n                                                                  \n🍭Tips:                                                         \n1️⃣Disqualification will occur if a player loses by timeout.                                                            \n2️⃣If disqualified by the tournament director, all outstanding games will be forfeited, which will affect the player’s ranking.                                                \n                                                                \n🍭The following rules must be obeyed to guarantee a respectful game:                                                      \n1️⃣No pauses are allowed.                                       \n2️⃣No vacation mode is permitted. (If a player is on vacation, they and their opponent can still make a move, but time will be suspended. Soooooooooooo, vacation mode is absolutely NOT allowed.)                                       \n3️⃣Any player who is on vacation or has paused the game will be disqualified without further notice or reminder.    \n4️⃣If you find that a player pauses the game or enters vacation mode, please send a message to the tournament director.                                                       \n                                                                \nHave fun and Enjoy. :)",
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                "id": 12824,
                "name": "Way to GO",
                "summary": "",
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        {
            "id": 111814,
            "name": "Blitz 19x19 Elimination Tournament 2024-01-18 13:30",
            "director": {
                "id": 4,
                "username": "matburt",
                "country": "us",
                "icon": "https://secure.gravatar.com/avatar/a87ff679a2f3e71d9181a67b7542122c?s=64&d=retro",
                "ratings": {
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                },
                "ranking": 17.66169912212786,
                "professional": false,
                "ui_class": "supporter moderator admin"
            },
            "description": "Automatic Site-wide Tournament",
            "schedule": {
                "id": 1,
                "name": "Blitz 19x19 Elimination Tournament",
                "rrule": "DTSTART:20260429T010000Z\nRRULE:FREQ=HOURLY;INTERVAL=4",
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                "next_run": "2026-04-29T05:00:00Z",
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        {
            "id": 116752,
            "name": "Kranj 76",
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                "id": 134125,
                "username": "mitava",
                "country": "at",
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                "name": "Slovenija",
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        {
            "id": 99960,
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                "id": 8992,
                "name": "super go!!!!!",
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                "username": "matburt",
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        {
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