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Archived Tournament

2026 Halloween Rapid

Welcome to our new website!
If you notice anything missing or in need of an update, feel free to let us know at chessroom@milibrary.org. We appreciate your feedback!

Top 6 boards are broadcasted on Chess.com: 

https://www.chess.com/events/2026-halloween-rapid


Register or Join Wait List Change Request Form

Info

  • Date: Tue, Oct 27 , 2026
  • 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: Tuesday, October 27: 6:00 pm
  • Onsite Registration: 6:00-6:15pm
  • 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: 10/27 6:30pm and remaining rounds are on a rolling schedule
  • Sections: 1800+ u1800

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 Oct 2026 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 regulations, anyone who receives $2000 or more in cumulative prizes during a calendar year must complete a W-9, and Mechanics’ Institute will issue a 1099-MISC form for tax reporting purposes.

  • Prize Fund:

    • $400 based on 40 paid entries
    • Actual Payout: coming after the event ended.
  1800+ u1800
  Projected Actual Projected Actual
1st Place $125 $134 $75 $81
2nd Place $75 $81 $50 $54
3rd Place $50 $54 $25 $27

Prizes: 2026 Halloween Rapid

# Name Place Cash Prize credited to pool Section
4 Jeremy David Cawthon (4.5/2107) 1st 134.00 1st Place: $134 1800+
2 Chawit Asavasaetakul (4.0/2172) 2nd 81.00 2nd Place: $81
6 Sheel Dandekar (3.5/2023) 3rd 54.00 3rd Place: $54
31 Simone Maria Macario (4.5/0) 1st 81.00 1st Place: $81 U1800
2 Hoa Long Tam (4.0/1713) 2nd 20.25 (4-way) 2nd Place: $54;
3rd Place: $27;
4-way split of $81: $20.25 each
4 David Siegel (4.0/1666) 2T 20.25 (4-way)
9 Shardul S Golwalkar (4.0/1457) 2T 20.25 (4-way)
32 Peter Shalek (4.0/0) 2T 20.25 (4-way)

 

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

Tournament Rules

  • Forfeit time: 15 minutes. 
  • We provide clocks and set it up for players.
  • Games will be US Chess and FIDE rapid 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.

Sick Policy:
The Mechanics' Institute Chess Club asks that any player who is feeling unwell withdraw from the tournament to help protect the health of others. The club reserves the right to deny entry to players who appear visibly ill. Players who withdraw due to illness before the start of the tournament will receive a full refund as a credit to their Jumbula account.


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.

Rounds

  • Download Round 1 as PGN Watch Replay of Round 1
  • Download Round 2 as PGN Watch Replay of Round 2
  • Download Round 3 as PGN Watch Replay of Round 3
  • Download Round 4 as PGN Watch Replay of Round 4
  • Download Round 5 as PGN Watch Replay of Round 5

Rounds are starting on time at Mechanics' so be sure to be on time. Clocks will not be delayed in starting for any reasons.

Standings

SwissSys 11.80.4 - Standings. 2026 Halloween Rapid: 1800+

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Total Prize
1 Jeremy David Cawthon 15038608 2107 W15 W10 D5 W13 W4 4.5 134.00
2 Chawit Asavasaetakul 30241114 2172 D6 W14 W8 D5 W9 4.0 81.00
3 Sheel Dandekar 12604772 2023 D14 D6 D11 W12 W5 3.5 54.00
4 IM Elliott Winslow 10363365 2203 L5 W12 W7 W10 L1 3.0  
5 Naga Abhiram Ponnaluri 17010328 1981 W4 W11 D1 D2 L3 3.0  
6 Keith McDaniel 12186400 1953 D2 D3 L13 W11 W10 3.0  
7 Rudransh Pathak 15361216 1929 H--- D9 L4 W8 W13 3.0  
8 Abhishek Mallela 12888811 2135 L10 W15 L2 L7 W14 2.0  
9 Stephen Parsons 16566932 2024 D12 D7 L10 W15 L2 2.0  
10 Cailen Jeremiah Melville 14006141 1897 W8 L1 W9 L4 L6 2.0  
11 Daniel Sevall 12811060 1850 W13 L5 D3 L6 D12 2.0  
12 Anish Rapaka 30668600 1788 D9 L4 W14 L3 D11 2.0  
13 Adam Baraz 12648001 1680 L11 B--- W6 L1 L7 2.0  
14 Isaac S Mays-Smith 30338290 1742 D3 L2 L12 B--- L8 1.5  
15 Darsh Thekkoot 32087041 1888 L1 L8 B--- L9 U--- 1.0  

SwissSys 11.80.4 - Standings. 2026 Halloween Rapid: U1800

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Total Prize
1 Simone Maria Macario 33276035 unr. W14 W11 W27 D6 W4 4.5 81.00
2 Hoa Long Tam 16919862 1713 W22 L4 W23 W10 W12 4.0 20.25
3 David Siegel 12595160 1666 W23 W20 L4 W16 W6 4.0 20.25
4 Shardul S Golwalkar 12797243 1457 W26 W2 W3 W8 L1 4.0 20.25
5 Peter Shalek 33345016 unr. L21 W28 W14 W19 W11 4.0 20.25
6 Samuel Agdamag 14874734 1557 W7 W21 W16 D1 L3 3.5  
7 Justin Adam Hallman 33185951 1005 L6 W33 D9 W15 W20 3.5  
8 Kar Lun Cheng 30599116 1757 X32 W19 W12 L4 U--- 3.0  
9 Phil Ploquin 12535882 1685 W17 L16 D7 W18 D10 3.0  
10 Thu Anh Le 17248797 1514 W24 D27 W15 L2 D9 3.0  
11 Ethan C Leung 32541981 1468 W28 L1 W17 W21 L5 3.0  
12 Alex Dean 13491171 1464 W25 W31 L8 W20 L2 3.0  
13 Mason Tobias 32440186 1359 L27 L15 W29 W25 W23 3.0  
14 Zhenhong Guan 15701381 1237 L1 W18 L5 W28 W26 3.0  
15 Marios Andreas Galanis 33307000 1352 D18 W13 L10 L7 W28 2.5  
16 Bennett Pio 31851261 1261 W33 W9 L6 L3 D17 2.5  
17 Shivaansh Girish 32467199 1078 L9 W29 L11 W27 D16 2.5  
18 Colin Evran 33335938 unr. D15 L14 W22 L9 W27 2.5  
19 Max Lober 30688691 1426 W29 L8 W24 L5 U--- 2.0  
20 Andrew Braithwaite 31237898 1397 W30 L3 W25 L12 L7 2.0  
21 Vimalraj Thekkoot 32490138 1194 W5 L6 W31 L11 U--- 2.0  
22 Andy Chen 14696697 1120 L2 L25 L18 W30 W29 2.0  
23 Isaac Eaves 33254972 1046 L3 W26 L2 W31 L13 2.0  
24 Tiberius Ostrem 33071159 969 L10 W30 L19 L26 W31 2.0  
25 Sushant Shankar 32432167 898 L12 W22 L20 L13 W33 2.0  
26 Paul Blum 12748433 863 L4 L23 W33 W24 L14 2.0  
27 Zayn Elmasry 30683587 unr. W13 D10 L1 L17 L18 1.5  
28 Tyler Hong 33321667 942 L11 L5 W30 L14 L15 1.0  
29 Lance Michael Kettle 33317065 853 L19 L17 L13 W33 L22 1.0  
30 Ege Kaan Duman 33338013 unr. L20 L24 L28 L22 B--- 1.0  
31 Salvatore Spina 33117321 unr. B--- L12 L21 L23 L24 1.0  
32 Oliver Casey 13977306 1131 F8 U--- U--- U--- U--- 0.0  
33 Owen Fernau 33344972 unr. L16 L7 L26 L29 L25 0.0  

 

Pairings

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