Play a NATIONAL Championship Event in SoCal!
This tournament is approved by US Chess Federation, SCCF, and CalChess

2023 US Class Open
a NATIONAL Championship Event in September 2023 for all levels (and ages)
with discounted parking (Overnight $28 | Day $15 | Valet $48)
Play and Stay at Sonesta LAX on 5985 W Century Blvd, Los Angeles, CA 90045

    • Welcome to the Chessiest Place on Earth!

      1000+ Prizes

      Fri 6:40p or Sat 9a to Sun 6p (2/3-day schedules)
      G/90 +30 (2-day schedule's Rounds 1, 2, & 3 = G/65 d5)




      1000+ Blitz Prizes

      Sun 6:30-8:30 p | G/5 d1

      Prize Fund: 2/3 of collected entry fees

      • u1000 Prizes

        Sat 9-4p | G/25 d5
        Sections: under 400, 400-599, 600-799, & 800-999
        1. Trophies to all players with a winning record
        2. Trophies to all club teams with two or more players in all sections combined*
        3. Medals to all players who do not get a trophy
        * Top 4 players’ scores count to teams' total


        u1000 Blitz Prizes

        Sat 4-6p | G/5 d1
        1. Trophies to all individuals with a winning record
        2. Medals to all players who do not get a trophy

    • Scholastic Event Prizes

      Trophies to all players with a winning record | Medals to others

      Scholastic Quads

      Sunday 10a-1p
      Sections: groups of 4 players based on rating


      Scholastic Swiss

      Sun 1:45-5:45p
      Sections: u600 & 600-1199

Schedule Click here to expand/contract
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    • Detailed Schedule




      1. Online Registration closes at 11:59p on the day before the first game.
      2. Onsite Registration closes at 20 minutes before the first game.
      3. Time Controls:
        1. 1000+ All rounds are G/90 +30 except 2-day Rounds 1-3 are G/65 d5
        2. u1000 All rounds are G/25 d5
      4. Play-up rules:
        1. 1000+
            - Players will be placed into sections based on their published USChess rating.
            - A player may play up one higher section, double play up is not allowed.
            - Players under 1000 must pay the play-up fee to play in section E.
        2. u1000
            - A player may play up one higher section, double play up is not allowed.

    • ½-point Byes

      1. US Class Championship: Half-point are available for any round with the following rules:
        1. Maximum of three ½-point byes for 1000+ sections and two ½-point byes for u1000 sections
        2. All byes must be requested at least 1 hour before that round's scheduled start
        3. After Round 3 starts, any changes to byes in the last two rounds will result in the player donating any earned prizes to BAC.
      2. Blitz:
        1. Maximum of two ½-point byes
        2. All byes must be requested before the start of Round 1
        3. After Round 3 starts, any changes to byes will result in the player donating any earned prizes to BAC.



      Scholastic Side Events

      The following events extend your fun and improvement; all of them are G/25 d5
      1. Scholastic Quads (3 games)
      2. Scholastic Swiss (4 games)

Fees & Post-Registration Click here to expand/contract
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Register Change Book hotel

Please register early to save your money and our time!




  • Econ entry offers a lower entry fee with 50% of the calculated prize, which suits players not motivated by prize money.

  • After Registering

    1. Check Processed Entries to confirm registration (available one week before the tournament).
    2. Use this form for changes/corrections.
    3. Add @bayareachess.com to safe senders to receive emails with orientation and other notifications.
    4. Reconfirm the email address and other information in your profile.
    5. Check this page the day before the tournament for orientation information.
    6. Contact us for any questions or suggestions.

Post-Registration Info Click here to expand/contract
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Register Change Book hotel

What to expect after registering

    • What's New?

      1. The 2023 US Class National Championship Day will be at Sonesta LAX on 5985 W Century Blvd, Los Angeles, CA 90045.
      2. We will use Sep 2023 Supplement to place players accurately.
      3. The 3-day and 2-day schedules will merge in Round 4.
      4. The 2-day schedule’s first 3 rounds will be G/65 d5.

    • What's Expected?

      1. Come as you are! We welcome all players regardless of their rating and playing level.
      2. US Chess membership (USCF) is required; if you're not a current member, you must renew/signup with your tournament registration at BayAreaChess.com so we can process and reconcile your entry.
      3. Unrated winners: Max $300 (except in the top section)
      4. We may adjust round times if needed (but it is unlikely).
      5. Be nice to everyone!