Tournament List
List all tournaments or create a new tournament.
GET /api/v1/tournaments/?format=api&ordering=-board_size&page=35
{ "count": 59406, "next": "https://online-go.com/api/v1/tournaments/?format=api&ordering=-board_size&page=36", "previous": "https://online-go.com/api/v1/tournaments/?format=api&ordering=-board_size&page=34", "results": [ { "id": 9184, "name": "Battle of the Brains", "director": { "id": 101306, "username": "Scaevola", "country": "tw", "icon": "https://user-uploads.online-go.com/cb01a2ff923b1fcaa1339dd864ddad00-64.png", "ratings": { "version": 5, "overall": { "rating": 1338.4819504731647, "deviation": 66.40420533921888, "volatility": 0.05995952138661418 } }, "ranking": 21.665925621201833, "professional": false, "ui_class": "" }, "description": "This tournament has handicaps.", "schedule": null, "title": null, "tournament_type": "s_mcmahon", "handicap": -1, "rules": "japanese", "time_per_move": 89280, "time_control_parameters": { "time_control": "fischer", "initial_time": 259200, "max_time": 259200, "time_increment": 86400 }, "is_open": true, "exclude_provisional": true, "group": { "id": 537, "name": "Race to SDK!", "summary": "A place for rivals to get stronger together", "require_invitation": false, "is_public": false, "admin_only_tournaments": false, "hide_details": false, "member_count": 61, "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg" }, "auto_start_on_max": false, "time_start": "2015-07-25T08:06:00Z", "players_start": 10, "first_pairing_method": "slaughter", "subsequent_pairing_method": "slaughter", "min_ranking": 0, "max_ranking": 18, "analysis_enabled": true, "exclusivity": "open", "started": "2015-07-26T17:33:42.854789Z", "ended": "2015-12-22T14:48:14.399544Z", "start_waiting": "2015-07-26T17:33:42.411760Z", "board_size": 19, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg", "player_count": 11, "ranked": true }, { "id": 111970, "name": "DDK playground III, fast correspondence", "director": { "id": 1081052, "username": "Malakia", "country": "be", "icon": "https://user-uploads.online-go.com/c79fd56979d8c75717ce4a3094a39e8e-64.png", "ratings": { "version": 5, "overall": { "rating": 1529.9885935446694, "deviation": 65.86626184996788, "volatility": 0.059965440240615196 } }, "ranking": 24.761640415537734, "professional": false, "ui_class": "" }, "description": "Fast correspondence games, for DDK players.", "schedule": null, "title": null, "tournament_type": "elimination", "handicap": 0, "rules": "japanese", "time_per_move": 88451, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "time_increment": 86400, "initial_time": 259200, "max_time": 604800 }, "is_open": true, "exclude_provisional": true, "group": { "id": 24, "name": "Double Digit Kyu Room", "summary": "For those of us working our way through to SDK. Whether its for your first time up the ladder and the 20th, lets find some opponents and camaraderie. ", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 3654, "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg" }, "auto_start_on_max": true, "time_start": "2024-02-06T09:00:00Z", "players_start": 8, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 20, "analysis_enabled": true, "exclusivity": "open", "started": "2024-02-04T06:27:48.848933Z", "ended": "2025-10-24T11:05:25.871598Z", "start_waiting": "2024-02-04T06:27:48.540597Z", "board_size": 19, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg", "player_count": 32, "ranked": true }, { "id": 19705, "name": "Blitz 19x19 Elimination Tournament 2016-08-09 01:30", "director": { "id": 4, "username": "matburt", "country": "us", "icon": "https://secure.gravatar.com/avatar/1dff84686f829e8ef90e2e123f1baddf?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 1125.8827017028436, "deviation": 78.19731452501959, "volatility": 0.06006087171771568 } }, "ranking": 17.66169912212786, "professional": false, "ui_class": "supporter moderator admin" }, "description": "Automatic Sitewide Tournament", "schedule": { "id": 1, "name": "Blitz 19x19 Elimination Tournament", "rrule": "DTSTART:20260419T210000Z\nRRULE:FREQ=HOURLY;INTERVAL=4", "active": true, "created": "2014-12-20T06:06:42.010011Z", "last_run": "2026-04-19T21:00:56.728030Z", "lead_time_seconds": 1800, "tournament_type": "elimination", "handicap": 0, "rules": "japanese", "size": 19, "time_control_parameters": { "time_control": "byoyomi", "period_time": 10, "main_time": 120, "periods": 5 }, "min_ranking": 0, "max_ranking": 36, "analysis_enabled": false, "exclude_provisional": true, "players_start": 4, "first_pairing_method": "slide", "subsequent_pairing_method": "slide", "settings": { "num_rounds": "3", "upper_bar": "20", "lower_bar": "10", "group_size": "3", "maximum_players": 100 }, "next_run": "2026-04-20T01:00:00Z", "base_points": "10.0" }, "title": null, "tournament_type": "elimination", "handicap": 0, "rules": "japanese", "time_per_move": 11, "time_control_parameters": { "time_control": "byoyomi", "period_time": 10, "main_time": 120, "periods": 5 }, "is_open": true, "exclude_provisional": true, "group": null, "auto_start_on_max": false, "time_start": "2016-08-09T01:30:00.670091Z", "players_start": 4, "first_pairing_method": "slide", "subsequent_pairing_method": "slide", "min_ranking": 0, "max_ranking": 36, "analysis_enabled": false, "exclusivity": "open", "started": "2016-08-09T01:34:02.577370Z", "ended": "2016-08-09T01:47:46.725326Z", "start_waiting": "2016-08-09T01:34:02.139327Z", "board_size": 19, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/trophies/gold_title_19.png", "player_count": 4, "ranked": true }, { "id": 138402, "name": "BeGinNer fIgHT!! _ ReBooT Ver10_ lEaguE", "director": { "id": 1742791, "username": "AKIBABO", "country": "_GoT_Lannister", "icon": "https://user-uploads.online-go.com/42e46e1ae449cfa5e3b99fac1d8dfab8-64.png", "ratings": { "version": 5, "overall": { "rating": 900.397754851611, "deviation": 62.18973771599212, "volatility": 0.05989446542766244 } }, "ranking": 12.487997870485675, "professional": false, "ui_class": "" }, "description": "BeGinNer fIgHT!! \n어서 오세요~~!! 초보자여~~ \n新手欢迎～～～", "schedule": null, "title": null, "tournament_type": "swiss", "handicap": 0, "rules": "japanese", "time_per_move": 87084, "time_control_parameters": { "system": "byoyomi", "time_control": "byoyomi", "speed": "correspondence", "pause_on_weekends": false, "main_time": 86400, "period_time": 86400, "periods": 2 }, "is_open": true, "exclude_provisional": true, "group": { "id": 16114, "name": "ShaNgHai_Korean_ChINa_BegInNer", "summary": "", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 2, "icon": "https://user-uploads.online-go.com/43948073dc0ed3291bbcf879bf34fa76-64.png" }, "auto_start_on_max": false, "time_start": "2026-03-27T06:00:00Z", "players_start": 8, "first_pairing_method": "slide", "subsequent_pairing_method": "slide", "min_ranking": 5, "max_ranking": 15, "analysis_enabled": false, "exclusivity": "open", "started": "2026-03-27T06:00:09.344578Z", "ended": null, "start_waiting": "2026-03-27T06:00:08.976016Z", "board_size": 19, "active_round": 1, "icon": "https://user-uploads.online-go.com/43948073dc0ed3291bbcf879bf34fa76-15.png", "player_count": 10, "ranked": true }, { "id": 135402, "name": "Let's improve ourself! McMahon for 7k-25k [FAST] # II", "director": { "id": 1872546, "username": "Sch-Mentor", "country": "001", "icon": "https://user-uploads.online-go.com/41804ae38abc71e0bea5040b313b01ec-64.png", "ratings": { "version": 5, "overall": { "rating": 1500, "deviation": 250, "volatility": 0.06 } }, "ranking": 24.303382182144386, "professional": false, "ui_class": "provisional" }, "description": "Hi everyone!\nThis tournament would be useful for your improvement due to McMahon system because your games will be more evenly matched.\n\nThe number of rounds and the top bar could be modified in first round according to the total number of players and the population above the bar.\n\nFast tournament: pay attention, 12 hours increment is something like two movements per day.\n\nThings to keep in mind:\n* Use the conditional move feature to speed up the game.\n* No pauses and no vacations are allowed; if any player switch it on, then they will be disqualified without further notice or reminder (unless they have an urgent matter to attend to and give notice to TD).\n* Disqualification will occur automatically by the site if a player loses by timeout.\n* If you find that a player pauses the game, enters vacation mode or has bad behavior, please send a message to the TD.\n* And last but not least: no weekends; just make your move, it’s a tournament, my friend!", "schedule": null, "title": null, "tournament_type": "mcmahon", "handicap": 0, "rules": "japanese", "time_per_move": 44568, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "pause_on_weekends": false, "time_increment": 43200, "initial_time": 172800, "max_time": 172800 }, "is_open": true, "exclude_provisional": true, "group": { "id": 508, "name": "Fast Correspondence", "summary": "Tournaments for people who like to play quick correspondence games.", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 822, "icon": "https://user-uploads.online-go.com/7cba93c8731bbe4ad1ff73b5abd71818-64.png" }, "auto_start_on_max": true, "time_start": "2025-12-29T17:33:00Z", "players_start": 16, "first_pairing_method": "strength", "subsequent_pairing_method": "strength", "min_ranking": 5, "max_ranking": 23, "analysis_enabled": true, "exclusivity": "open", "started": "2025-12-27T21:18:35.257711Z", "ended": null, "start_waiting": "2025-12-27T21:18:34.657124Z", "board_size": 19, "active_round": 3, "icon": "https://user-uploads.online-go.com/7cba93c8731bbe4ad1ff73b5abd71818-15.png", "player_count": 32, "ranked": true }, { "id": 137167, "name": "Zodiac Tournament : Pisces 2026", "director": { "id": 1015821, "username": "TimSeok", "country": "_United_Nations", "icon": "https://user-uploads.online-go.com/23efcd90e76c1f96a3d8996eb59f5435-64.png", "ratings": { "version": 5, "overall": { "rating": 1252.0842148421339, "deviation": 65.02518089286204, "volatility": 0.06001488149088344 } }, "ranking": 20.121205656973892, "professional": false, "ui_class": "" }, "description": "One tournament for each astrological signs of the Zodiac.\n\n<b>***The top three players (according to OGS) in this tournament\nwill qualify for the next ‘Master of the Zodiac’ tournament. This masters tournament will start as soon as there are at least 8 participants.***</b>\n\n<b>Be carreful about the time settings.</b>\n\nUse the conditional move feature to speed up the game. No pausing and no vacations; anyone who has vacation mode switched on, or pauses a game, will be disqualified.\n\nFeel free to give tips to your partner after the game. That’s how we can improve :)\n\nPlease no bots. The use of AI is not allowed.\n\n<h3>Title holder :</h3>\n\n<br><b><a href=\"\">Pisces</a></b> : On going\n<br><b><a href=\"\">Aeris</a></b> :\n<br><b><a href=\"\">Taurus</a></b> :\n<br><b><a href=\"https://online-go.com/tournament/128666\">Gemini</a></b> : <a href=\"https://online-go.com/player/244036/wurf3\"> Wurf3</a>\n<br><b><a href=\"https://online-go.com/tournament/129225\">Cancer</a></b> :<a href=\"https://online-go.com/player/1715337/yosshaaa\"> yosshaaa</a>\n<br><b><a href=\"https://online-go.com/tournament/130235\">Lion</a></b> :<a href=\"https://online-go.com/player/92935/invierno\"> invierno </a>\n<br><b><a href=\"https://online-go.com/tournament/131162\">Virgo</a></b> : <a href=\"https://online-go.com/player/92935/invierno\"> invierno </a>\n<br><b><a href=\"https://online-go.com/tournament/132210\">Libra</a></b> : On going\n<br><b><a href=\"https://online-go.com/tournament/133031\">Scorpio</a></b> : On going\n<br><b><a href=\"https://online-go.com/tournament/134297\">Sagittarius</a></b> : On going\n<br><b><a href=\"https://online-go.com/tournament/135075\">Capricornus</a></b> : On going\n<br><b><a href=\"https://online-go.com/tournament/136160\">Aquarius</a></b> : On going", "schedule": null, "title": null, "tournament_type": "double_elimination", "handicap": 0, "rules": "chinese", "time_per_move": 27251, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "pause_on_weekends": false, "time_increment": 25200, "initial_time": 259200, "max_time": 259200 }, "is_open": true, "exclude_provisional": true, "group": { "id": 508, "name": "Fast Correspondence", "summary": "Tournaments for people who like to play quick correspondence games.", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 822, "icon": "https://user-uploads.online-go.com/7cba93c8731bbe4ad1ff73b5abd71818-64.png" }, "auto_start_on_max": false, "time_start": "2026-02-19T06:00:00Z", "players_start": 4, "first_pairing_method": "random", "subsequent_pairing_method": "strength", "min_ranking": 12, "max_ranking": 38, "analysis_enabled": true, "exclusivity": "group", "started": "2026-02-19T06:00:16.263925Z", "ended": null, "start_waiting": "2026-02-19T06:00:15.556939Z", "board_size": 19, "active_round": 2, "icon": "https://user-uploads.online-go.com/7cba93c8731bbe4ad1ff73b5abd71818-15.png", "player_count": 20, "ranked": true }, { "id": 136269, "name": "19x19 Open League #117", "director": { "id": 1015644, "username": "wiadp1", "country": "pl", "icon": "https://user-uploads.online-go.com/253ed3da1cc83d36ac1e5313f959f54d-64.png", "ratings": { "version": 5, "overall": { "rating": 1357.1348379116837, "deviation": 67.2035710014903, "volatility": 0.06020465154221762 } }, "ranking": 21.98631332494487, "professional": false, "ui_class": "" }, "description": "Open league for everyone. Tournament will be started as soon as 10 players will join it.\n\nPrevious winners: https://online-go.com/group/12599", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": 0, "rules": "japanese", "time_per_move": 88451, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "time_increment": 86400, "initial_time": 259200, "max_time": 604800 }, "is_open": true, "exclude_provisional": false, "group": { "id": 12599, "name": "GO Special Tournaments", "summary": "", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 70, "icon": "https://user-uploads.online-go.com/02eb72b0992a3db1053a7c08c080d81b-64.png" }, "auto_start_on_max": true, "time_start": "2026-01-25T22:00:00Z", "players_start": 10, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": true, "exclusivity": "open", "started": "2026-01-20T22:50:31.284666Z", "ended": null, "start_waiting": "2026-01-20T22:50:29.916452Z", "board_size": 19, "active_round": 1, "icon": "https://user-uploads.online-go.com/02eb72b0992a3db1053a7c08c080d81b-15.png", "player_count": 10, "ranked": true }, { "id": 19218, "name": "The tournament", "director": { "id": 347221, "username": "Alectheawesome", "country": "us", "icon": "https://secure.gravatar.com/avatar/8cc82c3bd72324f5d5a9593a44dc37c8?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 990.4079179848546, "deviation": 84.17537818788169, "volatility": 0.06001435971211636 } }, "ranking": 14.693736378050405, "professional": false, "ui_class": "" }, "description": "super", "schedule": null, "title": null, "tournament_type": "double_elimination", "handicap": 0, "rules": "japanese", "time_per_move": 0, "time_control_parameters": { "time_control": "fischer", "initial_time": 60, "max_time": 604800, "time_increment": 0 }, "is_open": true, "exclude_provisional": true, "group": { "id": 28, "name": "Teaching League", "summary": "The teaching league is a group for players who want to improve their game by playing, as well as by teaching weaker players.\n\nQuick rule summary: no handicap, moderate time settings, stronger player creates a review.\n\nPlease add \"TL\" to the game name.", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 4481, "icon": "https://user-uploads.online-go.com/b1a8e87e33263bc92ccdc6303c0c184c-64.png" }, "auto_start_on_max": true, "time_start": "2016-07-22T19:50:00Z", "players_start": 20, "first_pairing_method": "slaughter", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 10, "analysis_enabled": true, "exclusivity": "open", "started": "2016-08-09T05:20:15.642958Z", "ended": "2016-08-09T05:40:20.807439Z", "start_waiting": "2016-08-09T05:20:13.958672Z", "board_size": 19, "active_round": null, "icon": "https://user-uploads.online-go.com/b1a8e87e33263bc92ccdc6303c0c184c-15.png", "player_count": 20, "ranked": true }, { "id": 137136, "name": "Handicap Arena 2026 - 013", "director": { "id": 526987, "username": "Gia", "country": "gr", "icon": "https://user-uploads.online-go.com/14567c9a0670b7d4a44606ba237f054d-64.png", "ratings": { "version": 5, "overall": { "rating": 1047.751568036602, "deviation": 63.98747462726221, "volatility": 0.06007316520805921 } }, "ranking": 15.996731506232393, "professional": false, "ui_class": "supporter" }, "description": "Part of an arena tournament - 2026. For details, rules and arena-standings see the group page.\n\nThe tournament will start as soon as it is full (10 players).", "schedule": null, "title": null, "tournament_type": "roundrobin", "handicap": -1, "rules": "japanese", "time_per_move": 88451, "time_control_parameters": { "system": "fischer", "time_control": "fischer", "speed": "correspondence", "time_increment": 86400, "initial_time": 259200, "max_time": 604800 }, "is_open": true, "exclude_provisional": true, "group": { "id": 13655, "name": "Handicap Arena", "summary": "Organising arena-type handicap correspondence tournaments.", "require_invitation": false, "is_public": true, "admin_only_tournaments": true, "hide_details": false, "member_count": 105, "icon": "https://user-uploads.online-go.com/5fe2ed1a16feb631d49732f2de506b9e-64.png" }, "auto_start_on_max": true, "time_start": "2026-02-12T10:00:00Z", "players_start": 10, "first_pairing_method": "slide", "subsequent_pairing_method": "slaughter", "min_ranking": 5, "max_ranking": 38, "analysis_enabled": true, "exclusivity": "open", "started": "2026-02-11T04:17:43.749158Z", "ended": null, "start_waiting": "2026-02-11T04:17:42.573774Z", "board_size": 19, "active_round": 1, "icon": "https://user-uploads.online-go.com/5fe2ed1a16feb631d49732f2de506b9e-15.png", "player_count": 10, "ranked": true }, { "id": 129035, "name": "telmich's experimental tournament - random round 3", "director": { "id": 1524436, "username": "telmich", "country": "ch", "icon": "https://secure.gravatar.com/avatar/ebdfc657470c327d3dbda9a2e3de7522?s=64&d=retro", "ratings": { "version": 5, "overall": { "rating": 1081.8731755226847, "deviation": 61.28125521906836, "volatility": 0.05932008823996608 } }, "ranking": 16.738630116030517, "professional": false, "ui_class": "supporter" }, "description": "Still experimenting with the tournament settings to make the tournament most fun.\n\nThis is a simultaneous McMahon, meaning games start in parallel. It also uses random pairing in all steps so that you get to play not in slaughter mode (against the strongest/weakest), but someone you would not normally play with.\n\nThe previous tournament (https://online-go.com/tournament/128245) uses double elimination, which seems to be waiting for everyone to finish - not in this one!\n\nMore to read for those who are interested:\n\nhttps://en.wikipedia.org/wiki/McMahon_system_tournament\n\nhttps://senseis.xmp.net/?McMahonPairing", "schedule": null, "title": null, "tournament_type": "s_mcmahon", "handicap": 0, "rules": "japanese", "time_per_move": 91187, "time_control_parameters": { "system": "byoyomi", "time_control": "byoyomi", "speed": "correspondence", "pause_on_weekends": true, "main_time": 604800, "period_time": 86400, "periods": 5 }, "is_open": true, "exclude_provisional": true, "group": { "id": 15384, "name": "Wait, don't go!", "summary": "", "require_invitation": false, "is_public": true, "admin_only_tournaments": false, "hide_details": false, "member_count": 3, "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg" }, "auto_start_on_max": true, "time_start": "2025-06-23T02:00:00Z", "players_start": 4, "first_pairing_method": "random", "subsequent_pairing_method": "random", "min_ranking": 5, "max_ranking": 29, "analysis_enabled": true, "exclusivity": "open", "started": "2025-06-23T02:00:28.546292Z", "ended": "2026-03-22T23:48:53.790236Z", "start_waiting": "2025-06-23T02:00:27.527208Z", "board_size": 19, "active_round": null, "icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg", "player_count": 18, "ranked": true } ] }
