List all tournaments or create a new tournament.

GET /api/v1/tournaments/?format=api&ordering=-max_ranking&page=5654
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "name": "mr spock Турнир 🇷🇺",
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            "description": "Турнир для групы - И Го и жизнь похожи, хорошо играть нужно и там и там! ,и, Team Russia",
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        {
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                "username": "Sais Divine Move",
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            "description": "13x13 size board double elimination pairing method is both set as strength and strength and anyone is invited to join that's with in the ranks of 25kyu- no lower the 10kyu so have fun everyone and I hope that everyone learns something in these teaching tournaments so to all GL & HF \nGLHF.",
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        {
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            "description": "If your rank changes to be outside the tournament Rank Restriction, please move yourself to the appropriate tournament. Enjoy your games.",
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            "description": "Have fun and make Friends. \nDon’t take wining or losing seriously, have fun.",
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                "summary": "for all fighters like lion :)",
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                "summary": "A group for Go players who love the 9x9 board.",
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