List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=min_ranking&page=5626
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "2022年4月4日中午12时开始\n请把国籍标注好!!!\n中国规则,黑棋贴目7.5目。\n只限20级到7级!!!\n临时棋手也可参加!!!\n一共10轮比赛!!!",
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