U.S. Senior Open Championship

Heritage Event, Grand Prix, Enhanced Grand Prix, National Championship Event
Hilton Chicago/Northbrook

Event Overview

2024 US Senior Open

$13,000 Guaranteed


Open to players age 50 and older as of July 12, 2024 (Born before July 13, 1974)

Playing Site and Room Bookings

Northbrook Hilton, Northbrook, Illinois 60062


6-Round Swiss System with 2 Sections, Open and Reserve, to encourage more players below 1500

FIDE and US Chess Ratings and Rules:

The Open Section is FIDE rated and uses FIDE rules. FIDE Laws of Chess 2023 FIDE Laws of Chess

Summary FIDE Laws of Chess and US Chess Federation rules differences:  Summary of FIDE-US Chess rules differences 2023

The Reserve section is US Chess rated only and does not use FIDE rules.

Round Schedule and Time Limits

Time Control: G/90+30


» Two half-point byes available for any round must commit before the end of round 2

Round times: 

» Friday 7/12, 1:00 , 6:00;

» Saturday 7/13, 9:00 - 2:30

» Sunday 7/14, 8:30 – 2:00  

The early round times allow for the start of the Caveman Chess Camp and for early departure, particularly for those taking flights.

Pairings/Reports:  Pairings and Results will be available online at www.cavemanchess.com

Equipment: Boards, sets, & scoresheets and clocks provided by Caveman Chess, LLC.

Prizes: $13,000 unconditionally guaranteed!

  • Prize Fund: $13,000 GTD, including $2,000 for Women
  • The winner of the Open Section qualifies for the 2025 US Senior Championship
  • The top woman finisher in the Open Section qualifies for the 2025 US Senior Women's Championship
  • Open:

            – FIDE-Rated 

            –Plaque to the top player in each age category: 50-54, 55-59, 60-64, 65-69, 70-74, 75+.

            –Players may win both a cash award and an age award

            – 1st: $2,000, 2nd:$1,500, 3rd:$1,000, 4th:$500, U2400 $500-$200; U2200, $400-$200; U2000, $400-$200; U1800, $300- $200;

            – Top Woman $500, $400, $300

  •  Reserve (Under 1800)

            – Not FIDE rated

            – 1 st: $500. 2nd: $400, 3rd: $300

            – U1600, $400-$200; U1400, $400-$200; U1200, $400-$200; U1000, $400-$200 – Top Woman: $400-$250- $150

    – Plaque to the top player in each age category: 50-54, 55-59, 60-64, 65-69, 70-74, 75+

Entry Fee - Online Only - Do not request discounts after cut-offs.

  • $99 to April 28
  • $140 through June 2
  • $160 through July 1
  • $190 through July 12
  • +$40 for playing up
  • $60 for round 2 re-entry with a round 1 bye

Onsite entries will be done online at the site. Players registering late will possibly receive an automatic ½ bye in round one. www.cavemanchess.com for more information.


Email: Contact@cavemanchess.com 

Side Events

  • Junior Open Blitz (7/13, $1k)
  • Senior/Medior Open Quick (7/13 $1k)

 Other Events

  • Caveman Medior Open ($10K)
  • Caveman Beginner Open 1
  • Caveman Beginner Open 2
  • US Blind Championship ($5K)
  • US Junior Open ($10k)
  • Followed by the Caveman Chess Camp


Summary of Key Terms and Conditions

This is a summary of essential Terms and Conditions. To see all Terms and Conditions, including our rules on distributing cash prizes electronically, go to https://www.cavemanchess.com/terms-conditions, go to https://www.cavemanchess.com/terms-conditions

Withdrawals: To withdraw from an event, go to https://cavechess.cc/withdraw and fill out the form. Emails will be ignored.

Refunds: Go to the Terms and Conditions link above for the entire policy. Here are important points:

  • Processing refunds is secondary to running the event without a hitch

  • While we attempt to pay refunds sooner, our policy is to pay within ten business days following the event.

  • In our standard refund policy, refunds incur a fee as follows:

    • For registrations $20 and below, a $5 fee

    • For registrations from $20.01 to $60, a $10 fee

    • For registrations above $60, a $15 fee

Registration Corrections and Changes: Please verify the information before submitting the registration. For example, some browsers with persistent "autofill" tools often overwrite a participant's name with the name of the person completing the registration.

  1. To make a change/correction, do not email. Go to https://cavechess.cc/change, to process changes.

  2. There is a $5 fee for each (set of) changes. 


2855 N. Milwaukee Avenue
Northbrook, IL 60062
United States

Sections: 2
Grand Prix Points: 120
Prize Fund: 13,000
FIDE Rated: Yes
Handicap Accessible: Yes
Residency Restriction: No
Online Event: No

Organizer Overview

Kevin Lee Bachler
Email: kevin_bachler@cavemanchess.com
Phone: 224-985-5245