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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+

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total
1 Jimmy Heiserman 12799690 2299 W13 W8 H--- H---       2.0
2 Samir S 12970386 2247 W19 W9           2.0
3 IM Elliott Winslow 10363365 2203 W20 W12           2.0
4 Christophe Bambou 12734479 2113 W23 W18           2.0
5 Jeremy David Cawthon 15038608 2098 W14 H---           1.5
6 Andrew Zavgorodniy 32143889 2094 H--- W16           1.5
7 GM Christopher Woojin Yoo 15244943 2667 H--- H---           1.0
8 Zelin Fang 17083043 2023 W15 L1           1.0
9 Stephen Parsons 16566932 2012 W21 L2           1.0
10 Phineas F Horowitz 14209057 1975 H--- D17           1.0
11 Kristian Clemens 13901075 1970 H--- H---   H---       1.0
12 Edward M Lewis 12601629 1966 B--- L3           1.0
13 Chase Wang 15015852 1951 L1 W23           1.0
14 Christopher Powers 30462548 1916 L5 W22           1.0
15 Divija Hasteer 13975247 1874 L8 B---           1.0
16 John Boyer 16865157 1816 W22 L6           1.0
17 Daniel Rob Perlov 16465203 1809 H--- D10           1.0
18 Dev Isak Kosuri 31395538 1802 X--- L4           1.0
19 Hector Viadiu-Ilarraza 12586903 1933 L2 D21           0.5
20 Rudransh Pathak 15361216 1929 L3 H---           0.5
21 Cailen Jeremiah Melville 14006141 1843 L9 D19           0.5
22 Michael Walder 10345120 1953 L16 L14           0.0
23 Adam Mercado 16571026 1928 L4 L13   H--- H---     0.0
 

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

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total
1 CM Isaac Dan Zhao 31617557 1981 W30 W18           2.0
2 Rajdeep Pinge 33104882 1974 W31 W17           2.0
3 Sawyer Stults 31608516 1662 W32 W20           2.0
4 Phil Ploquin 12535882 1659 W13 W21           2.0
5 Shahin Aghevli 30622638 1644 W33 W22           2.0
6 Sudarshan Seshadri 12906250 1989 W19 H---           1.5
7 Victor Yuhang Wu 30631341 1838 H--- W23           1.5
8 Isaac Mays-Smith 30338290 1735 H--- W28           1.5
9 Paul Krezanoski 16897133 1503 W16 H--- H---     H---   1.5
10 William Xu 33165815 1484 H--- W25           1.5
11 Samuel Agdamag 14874734 1482 H--- W27           1.5
12 Frederic Dutter 12343420 1900 L20 W26           1.0
13 Richard V Finacom 11452728 1841 L4 W31           1.0
14 Hoa Long Tam 16919862 1692 L21 W30           1.0
15 David Siegel 12595160 1676 L22 W32           1.0
16 Zachary Wickliffe 32140128 1666 L9 W33           1.0
17 Kyle Ewart Coventry Booth 30715175 1641 W24 L2 H---         1.0
18 William Milliken 11217109 1627 W34 L1 H---         1.0
19 Jamie Duif Calvin 10123640 1600 L6 W34           1.0
20 Keshav V Raman 30692470 1557 W12 L3           1.0
21 Sacha Marino Sloan 32301287 1536 W14 L4   H--- H--- H---   1.0
22 Ronald Florian-Moreta 33195365 1507 W15 L5           1.0
23 Thu Anh Le 17248797 1500 W29 L7           1.0
24 Christian Brickhouse 30261226 1418 L17 X29           1.0
25 Daniel Sevall 12811060 1830 D26 L10           0.5
26 Dominic A Vazquez 30703139 1542 D25 L12           0.5
27 Richard Hack 12796129 1500 H--- L11           0.5
28 Connor Harriman 31650582 1483 H--- L8           0.5
29 William Fitzgerald 17048414 1660 L23 F24           0.0
30 Nick Casares 10424364 1600 L1 L14           0.0
31 Daniel J Sisti 12734121 1577 L2 L13       H--- H--- 0.0
32 John Chan 12561007 1500 L3 L15           0.0
33 Andrew Braithwaite 31237898 1429 L5 L16           0.0
34 Georgia Pincus 33122236 1221 L18 L19           0.0
 

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

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total
1 Romeo Belmes Barreyro 17018168 1567 W24 W13           2.0
2 Albert Martin Starr 12844781 1500 W16 W14           2.0
3 Robert Turner 12407483 1380 W28 W15       H---   2.0
4 Ian R Jones 33193159 1323 W30 W18           2.0
5 Andy Liang 33236345 1300 W31 W17           2.0
6 Nicholas M Brown 12446259 1324 W29 D9           1.5
7 Ummon Karpe 12932259 1276 H--- W23           1.5
8 Mason Tobias 32440186 1227 W19 H---           1.5
9 Alexander Kojevnikov 31856555 1184 X27 D6           1.5
10 Tyler Garrett 33118372 1105 H--- W22       H---   1.5
11 Brandon Shien 30352643 1398 L17 W25           1.0
12 Zhenhong Guan 15701381 1277 L18 X30 H--- H---       1.0
13 Michael Isaiah Aspinwall 31657210 1234 X26 L1         H--- 1.0
14 Kyle Weaver 32642649 1226 W20 L2           1.0
15 Shane Davis 32212404 1183 W21 L3           1.0
16 Justin Hallman 33185951 1176 L2 X31           1.0
17 Braxton Wardle 31661706 1035 W11 L5           1.0
18 Ethan M Martin 15179785 338 W12 L4           1.0
19 Kurt Noble 33242812 unr. L8 W29           1.0
20 Julian Ossa 33237960 unr. L14 W28           1.0
21 Marcus Schaller 33237937 unr. L15 B---           1.0
22 Eli Albukerk 30219969 1271 H--- L10           0.5
23 Bryan D Martin 14691010 1233 H--- L7           0.5
24 Daniel Smi 31779836 1146 L1 H---           0.5
25 Imelda Meili Hau 32196802 554 H--- L11           0.5
26 Kevin Jacy 33207052 unr. F13 H---           0.5
27 Ian Robinett 33212973 unr. F9 H--- H--- H---       0.5
28 Paul Blum 12748433 907 L3 L20           0.0
29 Sergei Pimenov 31964181 819 L6 L19           0.0
30 Branum Edward Spliethof 32661549 793 L4 F12           0.0
31 Vishnu Sai Vinay 32551075 787 L5 F16           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 2. 2026 Fall Tuesday Night Marathon: 2000+

Bd Res White Res Black
1 1 Jimmy Heiserman (2299 1.0) 0 Zelin Fang (2023 1.0)
2 0 Stephen Parsons (2012 1.0) 1 Samir S (2247 1.0)
3 1 IM Elliott Winslow (2203 1.0) 0 Edward M Lewis (1966 1.0)
4 0 Dev Isak Kosuri (1802 1.0) 1 Christophe Bambou (2113 1.0)
7 1 Andrew Zavgorodniy (2094 0.5) 0 John Boyer (1816 1.0)
8 ½ Daniel Rob Perlov (1809 0.5) ½ Phineas F Horowitz (1975 0.5)
9 0 Michael Walder (1953 0.0) 1 Christopher Powers (1916 0.0)
10 0 Adam Mercado (1928 0.0) 1 Chase Wang (1951 0.0)
11 ½ Hector Viadiu-Ilarraza (1933 0.0) ½ Cailen Jeremiah Melville (1843 0.0)
  1 Divija Hasteer (1874 0.0)   BYE
  ½ GM Christopher Woojin Yoo (2667 0.5)   BYE
  ½ Jeremy David Cawthon (2098 1.0)   BYE
  ½ Kristian Clemens (1970 0.5)   BYE
  ½ Rudransh Pathak (1929 0.0)   BYE

 

Pairings for Round 2. 2026 Fall Tuesday Night Marathon: 1600-1999

Bd Res White Res Black
5 0 William Milliken (1627 1.0) 1 CM Isaac Dan Zhao (1981 1.0)
12 1 Rajdeep Pinge (1974 1.0) 0 Kyle Ewart Coventry Booth (1641 1.0)
13 1 Sawyer Stults (1662 1.0) 0 Keshav V Raman (1557 1.0)
14 0 Georgia Pincus (1221 0.0) 1 Jamie Duif Calvin (1600 0.0)
15 0 Sacha Marino Sloan (1536 1.0) 1 Phil Ploquin (1659 1.0)
16 1 Shahin Aghevli (1644 1.0) 0 Ronald Florian-Moreta (1507 1.0)
17 0 Thu Anh Le (1500 1.0) 1 Victor Yuhang Wu (1838 0.5)
18 0 Daniel Sevall (1830 0.5) 1 William Xu (1484 0.5)
19 1 Isaac Mays-Smith (1735 0.5) 0 Connor Harriman (1483 0.5)
20 1 Samuel Agdamag (1482 0.5) 0 Richard Hack (1500 0.5)
21 1 Frederic Dutter (1900 0.0) 0 Dominic A Vazquez (1542 0.5)
22 1 Richard V Finacom (1841 0.0) 0 Daniel J Sisti (1577 0.0)
23 0 Nick Casares (1600 0.0) 1 Hoa Long Tam (1692 0.0)
24 1 David Siegel (1676 0.0) 0 John Chan (1500 0.0)
25 0 Andrew Braithwaite (1429 0.0) 1 Zachary Wickliffe (1666 0.0)
26 1 X Christian Brickhouse (1418 0.0) 0 F William Fitzgerald (1660 0.0)
  ½ Sudarshan Seshadri (1989 1.0)   BYE
  ½ Paul Krezanoski (1503 1.0)   BYE

 

Pairings for Round 2. 2026 Fall Tuesday Night Marathon: u1600

Bd Res White Res Black
6 0 Michael Isaiah Aspinwall (1234 1.0) 1 Romeo Belmes Barreyro (1567 1.0)
27 1 Albert Martin Starr (1500 1.0) 0 Kyle Weaver (1226 1.0)
28 1 Robert Turner (1380 1.0) 0 Shane Davis (1183 1.0)
29 ½ Alexander Kojevnikov (1184 1.0) ½ Nicholas M Brown (1324 1.0)
30 1 Ian R Jones (1323 1.0) 0 Ethan M Martin ( 338 1.0)
31 0 Braxton Wardle (1035 1.0) 1 Andy Liang (1300 1.0)
32 1 Ummon Karpe (1276 0.5) 0 Bryan D Martin (1233 0.5)
33 1 Tyler Garrett (1105 0.5) 0 Eli Albukerk (1271 0.5)
34 0 Imelda Meili Hau ( 554 0.5) 1 Brandon Shien (1398 0.0)
35 1 X Zhenhong Guan (1277 0.0) 0 F Branum Edward Spliethof ( 793 0.0)
36 0 F Vishnu Sai Vinay ( 787 0.0) 1 X Justin Hallman (1176 0.0)
37 1 Julian Ossa (unr. 0.0) 0 Paul Blum ( 907 0.0)
38 0 Sergei Pimenov ( 819 0.0) 1 Kurt Noble (unr. 0.0)
  1 Marcus Schaller (unr. 0.0)   BYE
  ½ Mason Tobias (1227 1.0)   BYE
  ½ Daniel Smi (1146 0.0)   BYE
  ½ Kevin Jacy (unr. 0.0)   BYE
  ½ Ian Robinett (unr. 0.0)   BYE

 

Pairings for Round 2. 2026 Fall Tuesday Night Marathon: Extra rated

Bd Res White Res Black
41 1 Divija Hasteer (1874 1.0) 0 Zhenhong Guan (1277 0.0)
Bd Res White Res Black
39 0 Justin Hallman (1176 0.0) 1 Mason Tobias (1227 0.0)
40 1 Divija Hasteer (1874 0.0) 0 Damien Robinson ( 857 0.0)