HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept
{
"count": 58330,
"next": "https://online-go.com/api/v1/tournaments?format=api&ordering=time_start&page=5512",
"previous": "https://online-go.com/api/v1/tournaments?format=api&ordering=time_start&page=5510",
"results": [
{
"id": 123820,
"name": "Happy New Year!!!!🥳",
"director": {
"id": 1137358,
"username": "5k bot",
"country": "un",
"icon": "https://user-uploads.online-go.com/8f4cf69f7c9dbc27182081f5ff88be5c-64.png",
"ratings": {
"version": 5,
"overall": {
"rating": 1634.9416517835289,
"deviation": 65.32242502992433,
"volatility": 0.060022478894750174
}
},
"ranking": 26.297569681736874,
"professional": false,
"ui_class": ""
},
"description": "Happy New Year!🥳",
"schedule": null,
"title": null,
"tournament_type": "mcmahon",
"handicap": 0,
"rules": "japanese",
"time_per_move": 52,
"time_control_parameters": {
"system": "fischer",
"time_control": "fischer",
"speed": "live",
"pause_on_weekends": false,
"time_increment": 40,
"initial_time": 1500,
"max_time": 4200
},
"is_open": true,
"exclude_provisional": false,
"group": {
"id": 11648,
"name": "25k-12k Lv",
"summary": "",
"require_invitation": false,
"is_public": true,
"admin_only_tournaments": false,
"hide_details": true,
"member_count": 9,
"icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
},
"auto_start_on_max": true,
"time_start": "2025-12-31T16:01:00Z",
"players_start": 4,
"first_pairing_method": "slide",
"subsequent_pairing_method": "slaughter",
"min_ranking": 5,
"max_ranking": 38,
"analysis_enabled": true,
"exclusivity": "open",
"started": null,
"ended": null,
"start_waiting": null,
"board_size": 19,
"active_round": null,
"icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
"player_count": 38
},
{
"id": 127822,
"name": "New year tournament 2026🏆",
"director": {
"id": 1744286,
"username": "GM.Chu1wee.PBI",
"country": "zz",
"icon": "https://user-uploads.online-go.com/45cb97a3beda09bd740546bd842ed7b2-64.png",
"ratings": {
"version": 5,
"overall": {
"rating": 676.3934248137774,
"deviation": 66.26174558512402,
"volatility": 0.060065171175311335
}
},
"ranking": 5.8656690662357205,
"professional": false,
"ui_class": ""
},
"description": "Let’s fun <h3><p style=\"color:#FFAFB0;\"> [25k]-[1k] [1d]-[9d] [1p]-[9p] and no rank</h3></p>can come to this tournament!\n<b class=\"hr anim\"></b>\n\n<img src=\"https://www.gifcen.com/wp-content/uploads/2021/12/new-year-gif-33.gif\" width=\"400\" height=\"200\">\n<b class=\"hr anim\"></b>\n\n<img src=\"https://s05.flagcounter.com/count2/7OVT/bg_000000/txt_00FF00/border_000000/columns_5/maxflags_12/viewers_New+year+tournament+2026/labels_1/pageviews_1/flags_0/percent_0/\" alt=\"Flag Counter\" border=\"0\">\n\n\n<link rel=\"stylesheet\" type=\"textcss\" href=\"https://poonpun-page.neocities.org/GM.chu1Wee.PBI.css\">\n<link rel=\"stylesheet\" type=\"textcss\" href=\"https://poonpun-page.neocities.org/Rainbow.css\"> \n<div class=\"moving-x-container\"> \n<div class=\"moving-y-container\"> \n<div class=\"sai-container\"> \n<div class=\"backdrop\"> \n<div class=\"stone-container\"> \n<div class=\"stone black\"></div> \n<div class=\"stone white\"></div> \n<div class=\"stone black\">\n<link rel=\"stylesheet\" type=\"text/css\" href=\"https://poonpun-page.neocities.org/FlySai.css\">\n</div></div></div> \n<embed class=\"sai-ghostly-outline\" src=\"https://poonpun-page.neocities.org/fujiwara-no-sai-dancing.svg\"> \n<img class=\"flying-sai\" src=\"https://poonpun-page.neocities.org/fujiwara-no-sai-dancing.png\"></div>",
"schedule": null,
"title": null,
"tournament_type": "elimination",
"handicap": 0,
"rules": "japanese",
"time_per_move": 9573,
"time_control_parameters": {
"system": "absolute",
"time_control": "absolute",
"speed": "correspondence",
"pause_on_weekends": true,
"total_time": 1209600
},
"is_open": true,
"exclude_provisional": false,
"group": {
"id": 14340,
"name": "HackerGO.",
"summary": "<div style=\"background-color:#100001\">\n<strong><p style=\"font-size:35px;\"> Welcome to group page!!!</strong></p>\n<b class=\"hr anim\"></b>\n<a href=\"https://info.flagcounter.com/7aGi\"><img src=\"https://s01.flagcounter.com/count2/7aGi/bg_000000/txt_00FF00/bord",
"require_invitation": false,
"is_public": true,
"admin_only_tournaments": false,
"hide_details": true,
"member_count": 98,
"icon": "https://user-uploads.online-go.com/6c711586e8252cb78c5b436af5fd7209-64.png"
},
"auto_start_on_max": false,
"time_start": "2025-12-31T18:00:00Z",
"players_start": 4,
"first_pairing_method": "random",
"subsequent_pairing_method": "slaughter",
"min_ranking": 5,
"max_ranking": 38,
"analysis_enabled": true,
"exclusivity": "open",
"started": null,
"ended": null,
"start_waiting": null,
"board_size": 19,
"active_round": null,
"icon": "https://user-uploads.online-go.com/6c711586e8252cb78c5b436af5fd7209-15.png",
"player_count": 40
},
{
"id": 132622,
"name": "Absolute Fortnight - Januari 2026",
"director": {
"id": 710368,
"username": "Macrophage",
"country": "un",
"icon": "https://user-uploads.online-go.com/90a535ecb859bd75ac6553453904b2ab-64.png",
"ratings": {
"version": 5,
"overall": {
"rating": 1780.8023553550483,
"deviation": 66.16021275435925,
"volatility": 0.0597951045701864
}
},
"ranking": 28.27589708913787,
"professional": false,
"ui_class": ""
},
"description": "No 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\nA tournament series by Macrophage and fix.david\n\nPrevious tournament: https://online-go.com/tournament/130680\n\nNext tournament: https://online-go.com/tournament/132922",
"schedule": null,
"title": null,
"tournament_type": "s_mcmahon",
"handicap": 0,
"rules": "japanese",
"time_per_move": 9573,
"time_control_parameters": {
"system": "absolute",
"time_control": "absolute",
"speed": "correspondence",
"pause_on_weekends": false,
"total_time": 1209600
},
"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": 798,
"icon": "https://user-uploads.online-go.com/7cba93c8731bbe4ad1ff73b5abd71818-64.png"
},
"auto_start_on_max": false,
"time_start": "2026-01-01T00:00:00Z",
"players_start": 4,
"first_pairing_method": "slide",
"subsequent_pairing_method": "slide",
"min_ranking": 5,
"max_ranking": 38,
"analysis_enabled": true,
"exclusivity": "open",
"started": null,
"ended": null,
"start_waiting": null,
"board_size": 19,
"active_round": null,
"icon": "https://user-uploads.online-go.com/7cba93c8731bbe4ad1ff73b5abd71818-15.png",
"player_count": 11
},
{
"id": 133406,
"name": "9*9 #19 Final round",
"director": {
"id": 1381238,
"username": "BuzzerBeater",
"country": "030",
"icon": "https://user-uploads.online-go.com/d34952ca0e76fd14a163c154f3b31475-64.png",
"ratings": {
"version": 5,
"overall": {
"rating": 2007.9783282223204,
"deviation": 76.94172452467636,
"volatility": 0.06058447653062111
}
},
"ranking": 31.055387599023653,
"professional": false,
"ui_class": ""
},
"description": "Finals Qualifying:<br />\n Top 3 in Group A<br />1:<span style=\"color:red\">Clover_1102</span><br />2:<span style=\"color:red\">BuzzerBeater</span><br />3:<span style=\"color:red\">Xaloc</span><br />\n Top 2 in Group B<br />1:<span style=\"color:red\"></span><br />2:<span style=\"color:red\"></span><br />\n Top 1 in Group C<br /><span style=\"color:red\">ishikuga</span><br />\n Top 1 in Group D<br /><span style=\"color:red\"></span><br />\n Top 2 in the previous round <br />1:<span style=\"color:red\">Sadaharu</span><br />2:<span style=\"color:red\">mark5000</span><br />",
"schedule": null,
"title": null,
"tournament_type": "roundrobin",
"handicap": 0,
"rules": "japanese",
"time_per_move": 85333,
"time_control_parameters": {
"system": "absolute",
"time_control": "absolute",
"speed": "correspondence",
"pause_on_weekends": false,
"total_time": 2419200
},
"is_open": true,
"exclude_provisional": true,
"group": {
"id": 13682,
"name": "9*9棋賽群",
"summary": "A space for 9*9 tournaments!",
"require_invitation": false,
"is_public": true,
"admin_only_tournaments": false,
"hide_details": false,
"member_count": 22,
"icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
},
"auto_start_on_max": false,
"time_start": "2026-01-01T00:00:00Z",
"players_start": 9,
"first_pairing_method": "slide",
"subsequent_pairing_method": "slaughter",
"min_ranking": 5,
"max_ranking": 38,
"analysis_enabled": true,
"exclusivity": "open",
"started": null,
"ended": null,
"start_waiting": null,
"board_size": 9,
"active_round": null,
"icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
"player_count": 5
},
{
"id": 59580,
"name": "Longest tournament possible",
"director": {
"id": 760687,
"username": "HHG",
"country": "_United_Federation_of_Planets",
"icon": "https://secure.gravatar.com/avatar/94b05df11403a71a7a364ac616a2b643?s=64&d=retro",
"ratings": {
"version": 5,
"overall": {
"rating": 1371.2634638577877,
"deviation": 64.34776638407621,
"volatility": 0.06015708590051567
}
},
"ranking": 22.22607349050463,
"professional": false,
"ui_class": ""
},
"description": "The longest tournament possible is one which a) takes the longest time possible per round, and b) has the most rounds per player. \n\nByo-Yomi is best for maximising time per round (yes, I know I spelled that wrong, but I can't be bothered to correct it!). It is better than Absolute because (duh! I shouldn't have to explain this, but it's main time is equal to the Absolute timing's maximum time). It is better than Simple because it is basically simple but with more periods. It is better than Fischer, because, when pushed to the limit, Fischer is equal to Simple plus Absolute. However, Byo-Yomi is Simple * 300 (I code, so I like *, instead of x) + Absolute, which is better than Fischer. Canadian, when pushed to it's limits, is basically a worse version of Fischer. Also, you should use a 19x19 board.\n\nTo maximise (spelled it wrong again! :)) tournament rounds, Double Elimination is best, for it gives (optimally) log 2 of player number * 2 rounds. However, it is only better than McMahon for 64 or more rounds, as for less than 64, log 2 64 or less times 2 is less than 12 rounds, which is the round number you can have for any number of players.\n\n(BTW, if you exclude superko, the game can go on forever! Including superko, the lower bound is 10^48 (10^170 board positions, but not all can be cycled through! https://senseis.xmp.net/?NumberOfPossibleGoGames))",
"schedule": null,
"title": null,
"tournament_type": "mcmahon",
"handicap": 0,
"rules": "japanese",
"time_per_move": 2446080,
"time_control_parameters": {
"system": "byoyomi",
"time_control": "byoyomi",
"speed": "correspondence",
"pause_on_weekends": true,
"main_time": 2419200,
"period_time": 2419200,
"periods": 300
},
"is_open": true,
"exclude_provisional": true,
"group": {
"id": 5391,
"name": "Sup People",
"summary": "",
"require_invitation": false,
"is_public": true,
"admin_only_tournaments": false,
"hide_details": false,
"member_count": 19,
"icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
},
"auto_start_on_max": false,
"time_start": "2026-01-01T02:00:00Z",
"players_start": 1000,
"first_pairing_method": "slide",
"subsequent_pairing_method": "slaughter",
"min_ranking": 5,
"max_ranking": 38,
"analysis_enabled": true,
"exclusivity": "open",
"started": null,
"ended": null,
"start_waiting": null,
"board_size": 19,
"active_round": null,
"icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
"player_count": 199
},
{
"id": 133326,
"name": "Comeback tourney new year",
"director": {
"id": 1393499,
"username": "Imtiyaz",
"country": "th",
"icon": "https://user-uploads.online-go.com/56a672954f96d68180eb8444196aec12-64.png",
"ratings": {
"version": 5,
"overall": {
"rating": 1011.9208484463418,
"deviation": 64.76690845972848,
"volatility": 0.06003314607569738
}
},
"ranking": 15.191200643263914,
"professional": false,
"ui_class": ""
},
"description": "This is new year tournament\n\n<link rel=\"stylesheet\" type=\"text/css\" href=\"https://gocalculator.github.io/ogs.css/background.css>\n</html>\n\n<link rel=\"stylesheet\" type=\"text/css\" href=\"https://wizardofcode1.github.io/styles.css\">",
"schedule": null,
"title": null,
"tournament_type": "elimination",
"handicap": -1,
"rules": "japanese",
"time_per_move": 35,
"time_control_parameters": {
"system": "byoyomi",
"time_control": "byoyomi",
"speed": "live",
"pause_on_weekends": false,
"main_time": 0,
"period_time": 35,
"periods": 2
},
"is_open": true,
"exclude_provisional": false,
"group": {
"id": 13675,
"name": "Sunday GO and MORE",
"summary": "You can't miss this group, join now!",
"require_invitation": false,
"is_public": true,
"admin_only_tournaments": false,
"hide_details": false,
"member_count": 109,
"icon": "https://user-uploads.online-go.com/e9f20c25fe1d95f705ad61dc0bd03a5d-64.png"
},
"auto_start_on_max": false,
"time_start": "2026-01-01T04:00:00Z",
"players_start": 5,
"first_pairing_method": "slide",
"subsequent_pairing_method": "slaughter",
"min_ranking": 5,
"max_ranking": 38,
"analysis_enabled": true,
"exclusivity": "open",
"started": null,
"ended": null,
"start_waiting": null,
"board_size": 19,
"active_round": null,
"icon": "https://user-uploads.online-go.com/e9f20c25fe1d95f705ad61dc0bd03a5d-15.png",
"player_count": 17
},
{
"id": 131359,
"name": "2026-27 PlanetGo ** recovery tournament",
"director": {
"id": 1824346,
"username": "deleted-9e208194-220d-4fa2-8dc2-8ad4b30033cd",
"country": "_Starfleet",
"icon": "https://user-uploads.online-go.com/10f8cb8542de68294a885206814f4134-64.png",
"ratings": {
"version": 5,
"overall": {
"rating": 1886.227864407479,
"deviation": 66.82181291032425,
"volatility": 0.06013723397811139
}
},
"ranking": 29.607368682051714,
"professional": false,
"ui_class": ""
},
"description": "** Recovery Tournament.\n\nThis tournament was damaged in recent events. We're assessing whether it can continue, what the damage was.\n\nYou can leave if you like, or play the games, they won't affect anything.\n\nIf you have a rating affected let me know, we'll annull.\n\n\nWAS:\n\n🌟 2026-27 PlanetGo Season 🌟\n\n⏳ Game Speed: Correspondence\n⏰ Time Control: 10 days main time + 5 periods of 1 day 12 hours Byo-Yomi\n📏 Rules: Japanese, 19x19 board, no handicap\n🎯 Rank Restriction: 25 Kyu – 9 Dan+ (Provisional players allowed)\n🏆 Tournament Type: Swiss (4 to 10,000 players)\n🎲 Initial Pairing: Random\n🔄 Subsequent Pairing: Slaughter",
"schedule": null,
"title": null,
"tournament_type": "swiss",
"handicap": 0,
"rules": "japanese",
"time_per_move": 136438,
"time_control_parameters": {
"system": "byoyomi",
"time_control": "byoyomi",
"speed": "correspondence",
"pause_on_weekends": false,
"main_time": 864000,
"period_time": 129600,
"periods": 5
},
"is_open": true,
"exclude_provisional": false,
"group": {
"id": 15546,
"name": "PlanetGo",
"summary": "PlanetGo",
"require_invitation": false,
"is_public": true,
"admin_only_tournaments": true,
"hide_details": false,
"member_count": 3321,
"icon": "https://user-uploads.online-go.com/1a93b597df1fd3fe5a45927f9ff2234f-64.png"
},
"auto_start_on_max": true,
"time_start": "2026-01-01T08:00:00Z",
"players_start": 4,
"first_pairing_method": "random",
"subsequent_pairing_method": "slaughter",
"min_ranking": 5,
"max_ranking": 38,
"analysis_enabled": false,
"exclusivity": "open",
"started": "2025-09-01T08:32:39.929247Z",
"ended": null,
"start_waiting": "2025-09-01T08:31:16.403642Z",
"board_size": 19,
"active_round": 1,
"icon": "https://user-uploads.online-go.com/1a93b597df1fd3fe5a45927f9ff2234f-15.png",
"player_count": 699
},
{
"id": 124482,
"name": "New Year 2026 Tournament Hikaru no Go 19x19",
"director": {
"id": 1231889,
"username": "Ivan Ivochkin",
"country": "ru",
"icon": "https://user-uploads.online-go.com/8cd917b111df97f1886cff13e9b77d21-64.png",
"ratings": {
"version": 5,
"overall": {
"rating": 1670.393271863384,
"deviation": 62.94379956925205,
"volatility": 0.06014644439415039
}
},
"ranking": 26.794182882351805,
"professional": false,
"ui_class": ""
},
"description": "Happy new year!",
"schedule": null,
"title": null,
"tournament_type": "s_mcmahon",
"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": 11532,
"name": "Tournaments (Hikaru no Go) Group™️",
"summary": "Welcome You can joined tournaments in this group\nยินดีต้อนรับคุณสามารถทัวร์นาเม็นในกลุ่มนี้ได้",
"require_invitation": false,
"is_public": true,
"admin_only_tournaments": false,
"hide_details": false,
"member_count": 58,
"icon": "https://user-uploads.online-go.com/1a6da98b2a0fa744dfab936a7f3f5d43-64.png"
},
"auto_start_on_max": false,
"time_start": "2026-01-01T09:00:00Z",
"players_start": 5,
"first_pairing_method": "slide",
"subsequent_pairing_method": "slaughter",
"min_ranking": 5,
"max_ranking": 38,
"analysis_enabled": false,
"exclusivity": "open",
"started": null,
"ended": null,
"start_waiting": null,
"board_size": 19,
"active_round": null,
"icon": "https://user-uploads.online-go.com/1a6da98b2a0fa744dfab936a7f3f5d43-15.png",
"player_count": 35
},
{
"id": 132117,
"name": "2026 世界棋王争霸赛 The Fight For Greatest Player Of All Time",
"director": {
"id": 1818077,
"username": "时光和褚嬴呀",
"country": "un",
"icon": "https://secure.gravatar.com/avatar/65467471f69c780786a014ecc51b00f8?s=64&d=retro",
"ratings": {
"version": 5,
"overall": {
"rating": 1550.3195527176272,
"deviation": 75.26301074844967,
"volatility": 0.06010539790178418
}
},
"ranking": 25.06723876304973,
"professional": false,
"ui_class": ""
},
"description": "Only the champion will be forever remembered",
"schedule": null,
"title": null,
"tournament_type": "elimination",
"handicap": 0,
"rules": "korean",
"time_per_move": 8890,
"time_control_parameters": {
"system": "absolute",
"time_control": "absolute",
"speed": "correspondence",
"pause_on_weekends": true,
"total_time": 1123200
},
"is_open": true,
"exclude_provisional": false,
"group": {
"id": 43,
"name": "Kyu Level Study Group",
"summary": "A group for kyu level players! Join, play tournaments, and have fun. Thanks for being a part of our community!",
"require_invitation": false,
"is_public": true,
"admin_only_tournaments": false,
"hide_details": false,
"member_count": 8771,
"icon": "https://user-uploads.online-go.com/36b3f6c2ac8b8f0da8b168b3cc142a1b-64.png"
},
"auto_start_on_max": false,
"time_start": "2026-01-20T10:00:00Z",
"players_start": 8,
"first_pairing_method": "slide",
"subsequent_pairing_method": "slaughter",
"min_ranking": 5,
"max_ranking": 38,
"analysis_enabled": true,
"exclusivity": "open",
"started": null,
"ended": null,
"start_waiting": null,
"board_size": 19,
"active_round": null,
"icon": "https://user-uploads.online-go.com/36b3f6c2ac8b8f0da8b168b3cc142a1b-15.png",
"player_count": 4
},
{
"id": 133439,
"name": "Servus Oida Open Tournament #21",
"director": {
"id": 1285178,
"username": "VikingKoala",
"country": "eu",
"icon": "https://user-uploads.online-go.com/aa9209bd96e427a6ff7e102b893f9af0-64.png",
"ratings": {
"version": 5,
"overall": {
"rating": 1095.6784563597644,
"deviation": 62.57056887335775,
"volatility": 0.0597222024442758
}
},
"ranking": 17.032167618079864,
"professional": false,
"ui_class": "supporter"
},
"description": "McMahon Kyu Player Tournament",
"schedule": null,
"title": null,
"tournament_type": "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": 5720,
"name": "Outside Go7",
"summary": "Die Gruppe für alle, die sonst im Go7 spielen.",
"require_invitation": false,
"is_public": false,
"admin_only_tournaments": false,
"hide_details": false,
"member_count": 47,
"icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg"
},
"auto_start_on_max": false,
"time_start": "2026-01-28T11:00:00Z",
"players_start": 4,
"first_pairing_method": "strength",
"subsequent_pairing_method": "strength",
"min_ranking": 15,
"max_ranking": 29,
"analysis_enabled": true,
"exclusivity": "open",
"started": null,
"ended": null,
"start_waiting": null,
"board_size": 19,
"active_round": null,
"icon": "https://cdn.online-go.com/5.1/img/default-group-v5.svg",
"player_count": 3
}
]
}
