$5000 in prizes
December 14th, 2025
Regus 222 South Prospect, Park Ridge, IL 60068
Sections: Three; Open, 1800 and up; Reserve, below 1800; Booster, below 1200. No playing-up allowed.
Rounds: 6 double-rounds
Style: Swiss System
Time Control: G/20;d5
Schedule: 9:30 AM,11:00 AM, 1:30 PM, 3:00 PM, 4:30 PM, 6:00 PM.
If games finish early, rounds may start earlier but we will always allow a 1-hour lunch break. Revised rounds will be posted if they occur.
Entry Fee:
Byes: One ½-point (double, meaning 1 point for both games) bye available for any round, committed by the end of round 2. No byes may be added or rescinded after round 2.
ENT: Register online here.
Mem Req'd: US Chess membership is required, please obtain before the event. Discounted scholastic (K-12) memberships are available at cavechess.cc/voucher. Free US Chess membership to Park Ridge students, ages 5-18.
Sections, Place and Rating Group Prizes
Open Section (1800+): $650, $550, $450, $350, $250, $150 U2000: $100
Reserve (U1800): $550, $450, $350, $250, $150, $125 U1600: $125 UNR limited to $250
Booster (U1200): $225, $125, $75 U1000: $75 UNR limited to $100
Unrated players are players who have never played in a rated over-the-board event.
Prize configuration may be adjusted.
Chess Equipment: Boards, sets, and clocks provided by Caveman Chess, LLC
Parking: Free parking. Visitors' parking behind the building and the SW corner lot @ Garden & S. Fairview Streets, also street parking.
Questions: Contact@cavemanchess.com.
Ratings: NOVEMBER supplement. All sections are US Chess-rated.
Watch for additional information on upcoming events at