List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=time_per_move&page=4133
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "優勝者決定戦です~。",
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            "description": "A Christmas gift to all those dedicated Go players who love the 9x9 board.\n\n5 rounds with a minimum of 5 players per group.\n\nMake sure you are comfortable with the clock settings before joining.",
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                "summary": "For every player who enjoy go game",
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