List all tournaments or create a new tournament.

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HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "description": "**Two moves per day keeps the timeout away.**\n\nPlease avoid delaying your games: plan to not take vacation until your tournament participation is finished.\n\nAnalysis is enabled to allow the use of conditional moves.",
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            "id": 109148,
            "name": "Absolute Fortnight - November 2023 (V2)",
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                "username": "fix.david",
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            "description": "**Recreated Tournament 2nd attempt with proper tournament type**\n\nNo pausing and no vacations; anyone who has vacation mode switched on, or pauses a game, will be disqualified.\n\nBeware that this is fast correspondence.\n\nAlso, please do not use AI.\n\nSmallest group point compensation: Players in the smallest group in each round will receive extra points such that the maximum obtainable point value is just one less than in the other groups.\n________________________________\n\nPrevious tournament: https://online-go.com/tournament/103387\n\nNext tournament: https://online-go.com/tournament/109147",
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