List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=time_per_move&page=4156
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
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                "summary": "For every player who enjoy go game",
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            "description": "このトーナメントは下記の方が参加予定です。空きがないため参加者となっていない方は参加することができません。\n\nThis tournament have already been “reserved” for members listed below. If you are not one among them, don’t click “Join this tournament!”. (There is no vacancy.)\n\nレックスさん、KG1848さん、TeTAsAさん、hsbatk_さん、jam098765さん、稗田礼さん",
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            "description": "Why, sometimes I've thought as many as three possible ways to play go before dinner.\n\nIn the name of Bacon, how shall I swallow that invader?",
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            "description": "誰でも参加可能のトーナメントです・▽・\n楽しみましょう( ´∀`)",
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