February 24, 2026 - March 2, 2026
Register Now For The Confluence Open Championship 2025
This event has already taken place. All information below is for reference only.
total Prize fund
$180,000
Event Type
Invitational Events
Format
10-Player Round Robins
recent news
2023 Cairns Cup – Day 1 Recap
2023 Cairns Cup – Day 2 Recap
Jun 3, 2023 - Jun 13, 2023
Saint Louis Chess Club
For the third time, the Saint Louis Chess Club will host the Cairns Cup, an elite level tournament for the top female players from around the world. Inspired by its mission to further promote the game of chess to females, the STLCC aptly chose the name Cairns Cup in honor of co-founder Dr. Jeanne Sinquefield’s maiden name. Fans can look forward to a chess tournament similar in style to the prestigious Sinquefield Cup with the ten best female players from around the world competing in
the World Chess Hall of Fame for a $180,000 prize fund. This tournament, a nine-round classical event, will not only be one of the largest prize funds for a women’s tournament, it promises to be the strongest female tournament ever held in the world. The top three finishers will receive $45,000, $35,000, and $25,000 respectively.
*All times are Central Time (GMT-6)*
2023 Cairns Cup – Day 3 Recap
2023 Cairns Cup – Day 4 Recap
2023 Cairns Cup – Day 5 Recap
2023 Cairns Cup – Day 6 Recap
2023 Cairns Cup – Day 7 Recap
2023 Cairns Cup – Day 8 Recap
2023 Cairns Cup – Day 9
Regulations
The Cairns Cup shall be paired as a classical 10-player Round Robin event.
Prompt Arrival: Players are expected to arrive promptly for their games. Players not at their board at the beginning of each round may receive a fine of $1,000 to be deducted from their prize for each occurrence. Players more than 30 (thirty) minutes late for a round shall forfeit that round. Players who withdraw or forfeit a game may not receive any prize money.
No Draws: A “no draw” rule will be in effect throughout the Event, including any playoff games. Players may neither offer nor accept a draw. In the event of a claim for a draw under Article 9.2 of the FIDE Laws of Chess (three-fold repetition) or under Article 9.3 of the Laws (50 move rule), one of the Event Arbiters must be asked by the players to verify the claim.
No Cell Phones: No cell phones or other electronic devices shall be allowed in the tournament area. Any violation of this policy will result in a fine of $1,000 to be deducted from Player’s prize for each occurrence. In addition to the fine, a violation involving a cell phone or other electronic device that emits any noise during a game shall result in forfeiture of that game. If a violation occurs in subsequent games, the same penalties shall apply.
Time Control: 90 minutes for the first 40 moves followed by 30 minutes for the rest of the game with an addition of 30 seconds (increment) per move starting from move one.
Playoff Procedures: If two or more Players are tied for first, a playoff will be held to determine final standings among all tied players. The following tie-breaks will be used for the purposes of the crosstable and any special prizes or trophies: 1. Direct Encounter (if applicable), 2. Most Blacks, 3. Koya System, 4. Sonneborn-Berger, 5. Won Games.
An Armageddon Game is defined as follows: White shall start with 5 minutes and black shall start with 4 minutes. There shall be an additional 2-second increment starting with move 61. Black shall be declared the winner if the game ends in a draw.
Two Players: The tie will be broken with a two-game rapid match (G/20 +5 increment). If the contest is still undecided, the match will be decided by a two-game rapid match (G/10 +5 increment). If the contest is still undecided, the match will be decided by an Armageddon Game.
Three or More Players: If three or more players are tied for first, the players shall contest a rapid round robin (G/20 +5 increment). If no clear winner is produced, the remaining tied players shall contest a rapid (G/10 +5 increment) a) round robin (if three or more players remain tied) or b) 2-game match (if two players remain tied). If the contest is still undecided, the winner will be decided by a series of Armageddon games.
May 3, 2013 - May 13, 2013
May 5, 2013 - May 13, 2013
June 13, 2013 - June 23, 2013
September 9, 2013 - September 15, 2013
August 27, 2014 - September 7, 2014
March 31, 2015 - April 14, 2015
April 25, 2015 - April 26, 2015
July 6, 2015 - July 16, 2015
November 12, 2015 - November 15, 2015