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Archived Tournament

2026 Fall Tuesday Night Marathon

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 games are broadcasted on Chess.com with a 15-min delay:
https://www.chess.com/events/2026-fall-tuesday-night-marathon

 

Pre-TNM lecture schedule:

9/1 GM in Residence Sam Shankland

9/8 GM Mark Heimann

9/15 IM Elliott Winslow

9/22 IM Elliott Winslow

9/29 IM Elliott Winslow

10/6 IM Elliott Winslow

10/13 IM Ladia Jirasek

 


Register or Join Wait List Change Request Form

Info

  • Date: Tue, Sep 1 - Tue, Oct 13, 2026
  • Eligibility: Open to Everyone!
  • Rating: USCF & FIDE
  • Location: Mechanics' Institute, 4th Floor, 57 Post Street, San Francisco, CA 94104
  • Capacity: 120

Registration

  • Online Registration Open Until: Tuesday, October 13: 6:30 pm
  • Entry fee for Mechanics' Institute Members: $70
    • Play-up fee: $15
  • Entry fee for Non-Members: $100
    • Play-up fee: $20
  • Late fee: $10
  • $5 admin fee for all cancellations & refunds.

Two ways to check your entries:

  • Check the live entries on the Jumbula site by clicking on the View Entries button.
  • Check the processed entries here a day before the event.

 

Tournament Format

  • Tournament Format: Swiss System
  • Total Rounds: 7
  • Time control: 90 min basetime + 30 sec increment
  • Round Times: 9/1 6:30pm 9/8 6:30pm 9/15 6:30pm 9/22 6:30pm 9/29 6:30pm 10/6 6:30pm 10/13 6:30pm
  • Sections: 2000+ 1600-1999 Under1600

Play-up "200-rating point rule":

  • Players must have an 1800 USCF regular supplemental or actual regular rating to be eligible to play up to the 2000+ section.
  • Players must have a 1400 USCF regular supplemental or actual regular rating to be eligible to play up to the 1600-1999 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 2026 regular supplemental regular US Chess rating.

 

Prize Fund

Total Prize Fund: $2,400

  • 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:

    • $2400 based on 80 paid entries
    • Actual Payout: coming after the tournament finished.
  2000+ 1600-1999 u1600
  Projected Actual Projected Actual Projected Actual
1st Place $500   $300   $200  
2nd Place $300   $200   $100  
3rd Place $200   $100   $50  
Best under2200 $100          
Best under2000 $100          
Best under1800     $75      
Best under1600     $75      
Best under1400         $50  
Best under1200         $50  

 

Byes

Byes are available for players in any rounds if they can't participate that evening but would like to stay in the tournament.

  • A maximum of three half-point byes can be requested in this tournament.

  • Round 1 pairings will be done on Tuesday at 6:20 pm onsite. If you need a Round 1 bye, please email us by 4:00 pm.

  • Round 2-6 byes must be requested before the pairing of the round by Monday, 6 pm. Pairings usually are posted shortly after 8 pm on Monday, the day before the round.

  • Round 7 bye must be requested before the start of Round 5. Round 7 bye is irrevocable to prevent possible prize-fund manipulations.
  • Late registrations will receive a half-point bye for any missed round, up to three rounds.
     

Eligibility

Tournament Rules

  • Forfeit time:
    • 30 minutes without prior notice
    • 60 minutes with prior notice. Please email to chessroom@milibrary.org or call us to request this!
      A player will be awarded a forfeit win against any opponent who doesn't show up according to the prescribed rules, and every effort will be made to find that player an extra game.
  • We provide clocks and set it up for players.
  • Games will be US Chess and FIDE regular rated. Modified FIDE rules apply.
     
  • What do the time controls mean?
    Time controls tell you how much time you have for each game.
    G90+30 means game in 90 minutes with a 30-second increment with each move. This means you get 90 minutes, your opponent gets 90 minutes, and with each move players get 30 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

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

For pgn files and to replay the games via a pgn viewer, please see above.

2026FallTNMRound1.pdf

Standings

Standings are updated after each round.

SwissSys 11.80.4 - Standings. 2026 Fall Tuesday Night Marathon: 2000+

# Place Name Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total
1 1-10 Jimmy Heiserman 2299 W14   H---         1.0
2   Samir Sen 2247 W15             1.0
3   IM Elliott Winslow 2203 W16             1.0
4   Christophe Bambou 2113 W17             1.0
5   Jeremy David Cawthon 2098 W18 H---           1.0
6   Zelin Fang 2023 W19             1.0
7   Stephen Parsons 2012 W20             1.0
8   Edward M Lewis 1966 B---             1.0
9   John Boyer 1816 W13             1.0
10   Dev Isak Kosuri 1802 X21             1.0
11 11-12 Andrew Zavgorodniy 2094 H---             0.5
12   Kristian Clemens 1970 H---     H---       0.5
13 13-21 Michael Walder 1953 L9             0.0
14   Chase Wang 1951 L1             0.0
15   Hector Viadiu-Ilarraza 1933 L2             0.0
16   Rudransh Pathak 1929 L3             0.0
17   Adam Mercado 1928 L4     H--- H---     0.0
18   Christopher Powers 1916 L5             0.0
19   Divija Hasteer 1874 L6             0.0
20   Cailen Jeremiah Melville 1843 L7             0.0
21   Phineas F Horowitz 1975 F10             0.0

 

SwissSys 11.80.4 - Standings. 2026 Fall Tuesday Night Marathon: 1600-1999

# Place Name Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total
1 1-13 Sudarshan Seshadri 1989 W26             1.0
2   CM Isaac Dan Zhao 1981 W27             1.0
3   Rajdeep Pinge 1974 W28             1.0
4   Sawyer Stults 1662 W29             1.0
5   Phil Ploquin 1659 W21             1.0
6   Shahin Aghevli 1644 W30             1.0
7   Kyle Ewart Coventry Booth 1641 W31   H---         1.0
8   William Milliken 1627 W32   H---         1.0
9   Keshav V Raman 1557 W20             1.0
10   Sacha Marino Sloan 1536 W22     H--- H--- H---   1.0
11   Ronald Florian-Moreta 1507 W23             1.0
12   Paul Krezanoski 1503 W24 H--- H---     H---   1.0
13   Thu Anh Le 1500 W25             1.0
14 14-19 Daniel Sevall 1830 D15             0.5
15   Dominic A Vazquez 1542 D14             0.5
16   Victor Yuhang Wu 1838 H---             0.5
17   Richard Hack 1500 H---             0.5
18   William Xu 1484 H---             0.5
19   Connor Harriman 1483 H---             0.5
20 20-32 Frederic Dutter 1900 L9             0.0
21   Richard V Finacom 1841 L5             0.0
22   Hoa Long Tam 1692 L10             0.0
23   David Siegel 1676 L11             0.0
24   Zachary Wickliffe 1666 L12             0.0
25   William Fitzgerald 1660 L13             0.0
26   Jamie Duif Calvin 1600 L1             0.0
27   Nick Casares 1600 L2             0.0
28   Daniel J Sisti 1577 L3         H--- H--- 0.0
29   John Chan 1500 L4             0.0
30   Andrew Braithwaite 1429 L6             0.0
31   Christian Brickhouse 1418 L7             0.0
32   Georgia Pincus 1221 L8             0.0

 

SwissSys 11.80.4 - Standings. 2026 Fall Tuesday Night Marathon: u1600

# Place Name Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total
1 1-13 Romeo Belmes Barreyro 1567 W19             1.0
2   Albert Martin Starr 1500 W18             1.0
3   Robert Turner 1380 W20         H---   1.0
4   Nicholas M Brown 1324 W21             1.0
5   Ian R Jones 1323 W22             1.0
6   Andy Liang 1300 W23             1.0
7   Michael Isaiah Aspinwall 1234 X27           H--- 1.0
8   Mason Tobias 1227 W24             1.0
9   Kyle Weaver 1226 W25             1.0
10   Alexander Kojevnikov 1184 X28             1.0
11   Shane Davis 1183 W26             1.0
12   Braxton Wardle 1035 W16             1.0
13   Ethan M Martin 338 W17             1.0
14 14-15 Ummon Karpe 1276 H---             0.5
15   Bryan D Martin 1233 H---             0.5
16 16-28 Brandon Shien 1398 L12             0.0
17   Zhenhong Guan 1277 L13   H--- H---       0.0
18   Justin Hallman 1176 L2             0.0
19   Daniel Smith 1146 L1 H---           0.0
20   Paul Blum 907 L3             0.0
21   Sergei Pimenov 819 L4             0.0
22   Branum Edward Spliethof 793 L5             0.0
23   Vishnu Sai Vinay 787 L6             0.0
24   Kurt Noble unr. L8             0.0
25   Julian Ossa unr. L9             0.0
26   Marcus Schaller unr. L11             0.0
27   Kevin Jacyna unr. F7             0.0
28   Ian Robinett unr. F10             0.0

 

 

 

Pairings

Round 2-7 pairings are posted on Monday by 8pm.  Turn in Bye request by Monday at 6:00 PM!

Pairings for Round 1. 2026 Fall Tuesday Night Marathon: 2000+

Bd Res White Res Black
1 0 Chase Wang (1951 0.0) 1 Jimmy Heiserman (2299 0.0)
2 1 Samir Sen (2247 0.0) 0 Hector Viadiu-Ilarraza (1933 0.0)
3 0 Rudransh Pathak (1929 0.0) 1 IM Elliott Winslow (2203 0.0)
4 1 Christophe Bambou (2113 0.0) 0 Adam Mercado (1928 0.0)
5 0 Christopher Powers (1916 0.0) 1 Jeremy David Cawthon (2098 0.0)
6 1 Zelin Fang (2023 0.0) 0 Divija Hasteer (1874 0.0)
7 0 Cailen Jeremiah Melville (1843 0.0) 1 Stephen Parsons (2012 0.0)
8 0 F Phineas F Horowitz (1975 0.0) 1 X Dev Isak Kosuri (1802 0.0)
9 1 John Boyer (1816 0.0) 0 Michael Walder (1953 0.0)
  1 Edward M Lewis (1966 0.0)   BYE
  ½ Andrew Zavgorodniy (2094 0.0)   BYE
  ½ Kristian Clemens (1970 0.0)   BYE

 

Pairings for Round 1. 2026 Fall Tuesday Night Marathon: 1600-1999

Bd Res White Res Black
10 1 CM Isaac Dan Zhao (1981 0.0) 0 Nick Casares (1600 0.0)
11 0 Daniel J Sisti (1577 0.0) 1 Rajdeep Pinge (1974 0.0)
12 0 Frederic Dutter (1900 0.0) 1 Keshav V Raman (1557 0.0)
13 ½ Dominic A Vazquez (1542 0.0) ½ Daniel Sevall (1830 0.0)
14 0 Jamie Duif Calvin (1600 0.0) 1 Sudarshan Seshadri (1989 0.0)
15 0 Hoa Long Tam (1692 0.0) 1 Sacha Marino Sloan (1536 0.0)
16 1 Ronald Florian-Moreta (1507 0.0) 0 David Siegel (1676 0.0)
17 0 Zachary Wickliffe (1666 0.0) 1 Paul Krezanoski (1503 0.0)
18 0 John Chan (1500 0.0) 1 Sawyer Stults (1662 0.0)
19 0 William Fitzgerald (1660 0.0) 1 Thu Anh Le (1500 0.0)
20 0 Andrew Braithwaite (1429 0.0) 1 Shahin Aghevli (1644 0.0)
21 1 Kyle Ewart Coventry Booth (1641 0.0) 0 Christian Brickhouse (1418 0.0)
22 0 Georgia Pincus (1221 0.0) 1 William Milliken (1627 0.0)
37 1 Phil Ploquin (1659 0.0) 0 Richard V Finacom (1841 0.0)
  ½ Victor Yuhang Wu (1838 0.0)   BYE
  ½ Richard Hack (1500 0.0)   BYE
  ½ William Xu (1484 0.0)   BYE
  ½ Connor Harriman (1483 0.0)   BYE

 

Pairings for Round 1. 2026 Fall Tuesday Night Marathon: u1600

Bd Res White Res Black
23 1 Romeo Belmes Barreyro (1567 0.0) 0 Daniel Smith (1146 0.0)
24 0 Justin Hallman (1176 0.0) 1 Albert Martin Starr (1500 0.0)
25 0 Brandon Shien (1398 0.0) 1 Braxton Wardle (1035 0.0)
26 0 Paul Blum ( 907 0.0) 1 Robert Turner (1380 0.0)
27 1 Nicholas M Brown (1324 0.0) 0 Sergei Pimenov ( 819 0.0)
28 0 Branum Edward Spliethof ( 793 0.0) 1 Ian R Jones (1323 0.0)
29 1 Andy Liang (1300 0.0) 0 Vishnu Sai Vinay ( 787 0.0)
30 1 Ethan M Martin ( 338 0.0) 0 Zhenhong Guan (1277 0.0)
31 1 X Michael Isaiah Aspinwall (1234 0.0) 0 F Kevin Jacyna (unr. 0.0)
32 0 Kurt Noble (unr. 0.0) 1 Mason Tobias (1227 0.0)
33 1 Kyle Weaver (1226 0.0) 0 Julian Ossa (unr. 0.0)
34 0 F Ian Robinett (unr. 0.0) 1 X Alexander Kojevnikov (1184 0.0)
35 1 Shane Davis (1183 0.0) 0 Marcus Schaller (unr. 0.0)
  ½ Ummon Karpe (1276 0.0)   BYE
  ½ Bryan D Martin (1233 0.0)   BYE

 

Pairings for Round 1. 2026 Fall Tuesday Night Marathon: Extra rated

Bd Res White Res Black
38 0 Michael Isaiah Aspinwall (1234 0.0) 1 Alexander Kojevnikov (1184 0.0)