Archived Tournament

Mechanics' Weekend Rapid - 2025 Sept

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Info

  • Date: Sat, Sep 20 , 2025
  • Eligibility: Open to Everyone!
  • Rating: USCF & FIDE
  • Location: Mechanics' Institute, 4th Floor, 57 Post Street, San Francisco, CA 94104
  • Capacity: 80

Registration

  • Online Registration Open Until: Saturday, September 20: 10:00 am
  • Onsite Registration: 9:30-9:45am
  • Entry fee for Mechanics' Institute Members: $25
    • Play-up fee: $10
  • Entry fee for Non-Members: $30
    • Play-up fee: $15
  • Late fee: $10
  • $5 admin fee for all cancellations & refunds.
  • Two ways to check your entries:
    • Check the live entries on the Jumbula page.
    • Check the processed entries here a day before the event.
  • Please note our late fee may be in effect and is usually added 24 hours before the start of a tournament in case capacity reaches 90%.

Tournament Format

  • Tournament Format: Swiss System
  • Total Rounds: 5
  • Time control: 15 min basetime + 3 sec increment
  • Round Times: 9/20 10:00am 10:45pm 11:30pm 12:15pm 1:00pm
  • Sections: 1800+ Under1800

Play-up "200-rating point rule":

  • Players must have an 1600 USCF regular supplemental or actual regular rating to be eligible to play up to the 1800+ section.

US Chess rating will be used for section determination and pairings.  FIDE or other ratings are only used if no US Chess rating is available. 

Pairings are based on the Sep 2025 regular supplemental regular US Chess rating.

 

Prize Fund

  • Prize explanations are coming after the event.
  • Please allow 2-3 weeks for processing prize checks.
  • Per IRS rules anyone with a cumulative $600+ prize in any calendar year will need to fill out a W9 and Mechanics' Institute will be providing a 1099 form. 
  • Prize Fund:

    • $400 based on 40 paid entries
    • Actual Payout: $360 based on 36 paid entries - 90% payout.
  1800+ u1800
  Projected Actual Projected Actual
1st Place 125 113 75 68
2nd Place 75 68 50 45
3rd Place 50 45 25 22

Prizes: Mechanics' Institute Rapid 2025 Sep

# Name Cash Prize credited to pool Section
1 GM Mark Heimann (4.0/2603) 75.33 1st Place: $113;
2nd Place: $68;
3rd Place: $45;
3-way split of $225: $75.33 each
1800+
9 Ivan Zhou (4.0/2199) 75.33
15 Zlata Mokeeva (4.0/2013) 75.33
17 Hinduja Reddy (5.0/0) 66.00 1st Place: $66 U1800
1 Toma Yuen (4.0/1713) 44.00 2nd Place: $44
2 Si Hao Huang (3.0/1684) 3.14 3rd Place: $22;
7-way split: $3.14 each
3 Phil Ploquin (3.0/1681) 3.14
4 Jonas Shomorony (3.0/1623) 3.14
8 Dominic A Vazquez (3.0/1343) 3.14
9 Arjun Patil (3.0/1341) 3.14
10 Bharadwaj Janardhan (3.0/1328) 3.14
16 Sujan Rachuri (3.0/0) 3.14

 

Byes

  • Byes are available for players in any round in case they can't participate but would like to stay in the tournament.
  • Byes can be requested up to 15 minutes prior to the round start time.
  • Last round bye must be requested by the start of Round 1.
  • Late registrations will receive a 0.5 bye for any missed round, up to a total of 2 rounds.

Eligibility

  • Players must have current US Chess Federation membership. Expiration date of their US Chess membership must be later than the last day of the tournament.
  • Not sure if you have a membership? Need to check the expiration date of your members? Visit: https://new.uschess.org/player-search
  • Become a member or renew your membership: https://new.uschess.org/join-us-chess

Tournament Rules

  • What do the time controls mean?
    Time controls tell you how much time you have for each game.
    G40;d5 means game in 40 minutes with a 5-second delay on each move. This means you get 40 minutes, your opponent gets 40 minutes, and at each move the clock counts down from 5 to 0 before the player's time starts. If a player doesn't use up the whole 5 seconds, the remainder of that time is lost.
  • How many games/rounds?
    The 4SS before the time control means it is a Swiss System tournament with four rounds, or four games, that a player can play in the tournament. The tournaments are never eliminated, so win or lose, you can stay in the tournament. 
  • Forfeit time: 15 minutes. 
  • We provide clocks and set it up for players.
  • Games will be US Chess and FIDE blitz rated. Modified FIDE rules apply.
     
  • What do the time controls mean?
    Time controls tell you how much time you have for each game.
    G/15+3 means game in 15 minutes with a 3-second increment with each move. This means you get 15 minutes, your opponent gets 15 minutes, and with each move players get 3 seconds added to their clock.


Mechanics' Institute Chess Club reserves the right to update any details of this event (including but not limited to sections, time control, round times, prize fund, etc.) as we get closer to the event date to ensure an excellent tournament experience for players.

Standings

Processed entries are coming 1 day before the event starts.

Final standings will be posted after the event is finished.

 

Final Standings

SwissSys Standings. Mechanics' Institute Rapid 2025 Sep: 1800+

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Total Prize
1 GM Mark Heimann 12802899 2603 W8 D5 W10 W4 H--- 4.0 73.00
2 Ivan Zhou 17352346 2199 W18 D10 W19 W5 D4 4.0 73.00
3 Zlata Mokeeva 31128131 2013 H--- W22 D6 W7 W8 4.0 73.00
4 Sebastian Suarez 16875347 2284 W15 W7 W12 L1 D2 3.5  
5 CM Pranav Senthilkumar 14020007 2227 W9 D1 W13 L2 W10 3.5  
6 Aryan Balyan 15273590 2258 W17 L12 D3 D13 W15 3.0  
7 Reyansh Paragiri 30233070 2159 W21 L4 W15 L3 W17 3.0  
8 Abhinav Chakravarthi Ramaswamy 13755673 2095 L1 W9 W16 W17 L3 3.0  
9 Romulo Silvestre 16920915 1954 L5 L8 W18 W20 W14 3.0  
10 Dmytro Dzhanhirov 32073210 2269 W16 D2 L1 W12 L5 2.5  
11 Vladislav Shevkunov 15490096 2214 L12 L17 W22 D16 W21 2.5  
12 Beckett Spence 31980852 1812 W11 W6 L4 L10 D16 2.5  
13 IM Elliott Winslow 10363365 2200 W20 D19 L5 D6 U--- 2.0  
14 Sanat Singhal 15580756 2080 L19 W20 L17 W21 L9 2.0  
15 Sivavishnu Srinivasan 16778004 2055 L4 W21 L7 W22 L6 2.0  
16 WFM Jenny Qi 17050786 2043 L10 W18 L8 D11 D12 2.0  
17 Zee Chin 16965808 1958 L6 W11 W14 L8 L7 2.0  
18 Naga Abhiram Ponnaluri 17010328 1737 L2 L16 L9 B--- W22 2.0  
19 Daniel Cremisi 14543654 2349 W14 D13 L2 U--- U--- 1.5  
20 Elliot Shindo 15743927 1793 L13 L14 L21 L9 B--- 1.0  
21 Zeno Kalonaris 16307134 1680 L7 L15 W20 L14 L11 1.0  
22 Samarth Ram Bharadwaj 30155483 1659 B--- L3 L11 L15 L18 1.0  

SwissSys Standings. Mechanics' Institute Rapid 2025 Sep: U1800

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Total Prize
1 Hinduja Reddy 32572573 unr. B--- W4 W2 W3 W5 5.0 66.00
2 Toma Yuen 32073536 1713 W7 W11 L1 W8 W9 4.0 44.00
3 Si Hao Huang 31312861 1684 W8 W10 W9 L1 L4 3.0 3.14
4 Phil Ploquin 12535882 1681 W17 L1 W7 L9 W3 3.0 3.14
5 Jonas Shomorony 15097261 1623 W16 L9 W6 W11 L1 3.0 3.14
6 Dominic A Vazquez 30703139 1343 L9 W15 L5 W13 W10 3.0 3.14
7 Arjun Patil 31332342 1341 L2 W16 L4 W15 W12 3.0 3.14
8 Bharadwaj Janardhan 30688148 1328 L3 W13 W12 L2 W11 3.0 3.14
9 Sujan Rachuri 32531249 unr. W6 W5 L3 W4 L2 3.0 3.14
10 Mathew Padilla 30220045 1517 W13 L3 L14 W16 L6 2.0  
11 Ruyi Hu 16659933 1463 W14 L2 W15 L5 L8 2.0  
12 Sandesh Aher 16730310 1426 L15 W17 L8 W14 L7 2.0  
13 Dmitry Bragin 32349418 1029 L10 L8 B--- L6 W14 2.0  
14 Pavan Kumar Ponnaluri 32184896 787 L11 B--- W10 L12 L13 2.0  
15 Cade D Osborne 12918224 658 W12 L6 L11 L7 W16 2.0  
16 Yinuo Hu 17219612 1040 L5 L7 W17 L10 L15 1.0  
17 Vincent Stokes 32518410 1110 L4 L12 L16 U--- U--- 0.0  

 

Pairings

Pairings are posted on the wall of the club. We do not post pairings online for 1-day events.