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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 Ladia Jirasek

10/13 IM John Donaldson


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
  • 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

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

2026FallTNMRound2.pdf

2026FallTNMRound3.pdf

2026FallTNMRound4.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 IM Elliott Winslow 10363365 2203 W11 W5 B--- D2 W8     4.5
2 Samir Sen 12970386 2247 W22 W13 H--- D1 W5     4.0
3 GM Christopher Woojin Yoo 15244943 2667 H--- H--- W6 W7 W13     4.0
4 Jimmy Heiserman 12799690 2299 W18 W21 H--- H--- H---     3.5
5 Edward M Lewis 12601629 1966 B--- L1 W10 W9 L2     3.0
6 Jeremy David Cawthon 15038608 2098 W17 H--- L3 W22 D12     3.0
7 Phineas F Horowitz 14209057 1975 H--- D10 W23 L3 W18     3.0
8 Christophe Bambou 12734479 2113 W24 W15 D9 H--- L1     3.0
9 Andrew Zavgorodniy 32143889 2094 H--- W23 D8 L5 W20   H--- 3.0
10 Daniel Rob Perlov 16465203 1809 H--- D7 L5 W23 W21     3.0
11 Rudransh Pathak 15361216 1929 L1 H--- W19 W21 H---     3.0
12 Hugo Osm Santiago 14842497 1999 H--- H--- H--- W17 D6     3.0
13 Stephen Parsons 16566932 2012 W19 L2 D17 W14 L3     2.5
14 Divija Hasteer 13975247 1874 L21 B--- D20 L13 W22     2.5
15 Dev Isak Kosuri 31395538 1802 X--- L8 H--- D18 H---     2.5
16 IM Sandeep Sethuraman 15472832 2526 H--- H--- H--- U--- B---     2.5
17 Christopher Powers 30462548 1916 L6 W25 D13 L12 D19     2.0
18 Chase Wang 15015852 1951 L4 W24 D21 D15 L7     2.0
19 Cailen Jeremiah Melville 14006141 1843 L13 D22 L11 B--- D17     2.0
20 Kristian Clemens 13901075 1970 H--- H--- D14 H--- L9     2.0
21 Zelin Fang 17083043 2023 W14 L4 D18 L11 L10     1.5
22 Hector Viadiu-Ilarraza 12586903 1933 L2 D19 W24 L6 L14     1.5
23 John Boyer 16865157 1816 W25 L9 L7 L10 H---     1.5
24 Adam Mercado 16571026 1928 L8 L18 L22 H--- H---     1.0
25 Michael Walder 10345120 1953 L23 L17 H--- U--- U---     0.5

 

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 W17 W30 W7 D5 W4     4.5
2 Hoa Long Tam 16919862 1692 L26 W17 W24 W7 W8     4.0
3 Rajdeep Pinge 33104882 1974 W18 W29 D9 H--- W14     4.0
4 Victor Yuhang Wu 30631341 1838 H--- W24 W31 W10 L1     3.5
5 Sudarshan Seshadri 12906250 1989 W23 H--- W15 D1 H---     3.5
6 Frederic Dutter 12343420 1900 L8 W28 D23 W31 X22     3.5
7 Sawyer Stults 31608516 1662 W19 W8 L1 L2 W23     3.0
8 Keshav V Raman 30692470 1557 W6 L7 W11 W30 L2     3.0
9 Shahin Aghevli 30622638 1644 W33 W25 D3 L14 D12     3.0
10 Phil Ploquin 12535882 1659 W11 W26 H--- L4 D16     3.0
11 Richard V Finacom 11452728 1841 L10 W18 L8 W25 W20 H---   3.0
12 Zachary Wickliffe 32140128 1666 L16 W33 W26 D22 D9     3.0
13 Daniel Sevall 12811060 1830 D28 L22 W35 D23 W27     3.0
14 Junior Mejia 14679391 1682 H--- H--- W25 W9 L3     3.0
15 Isaac Mays-Smith 30338290 1735 H--- W20 L5 W21 H---   H--- 3.0
16 Paul Krezanoski 16897133 1503 W12 H--- H--- H--- D10 U---   3.0
17 Nick Casares 10424364 1600 L1 L2 W33 D19 W28     2.5
18 Daniel J Sisti 12734121 1577 L3 L11 W32 D24 W29 H--- H--- 2.5
19 John Chan 12561007 1500 L7 L27 X34 D17 W30     2.5
20 Connor Harriman 31650582 1483 H--- L15 W28 W29 L11     2.5
21 Christian Brickhouse 30261226 1418 L29 X34 D27 L15 W33     2.5
22 William Xu 33165815 1484 H--- W13 H--- D12 F6     2.5
23 Jamie Duif Calvin 10123640 1600 L5 W32 D6 D13 L7     2.0
24 Thu Anh Le 17248797 1500 W34 L4 L2 D18 H---   H--- 2.0
25 Ronald Florian-Moreta 33195365 1507 W27 L9 L14 L11 X35     2.0
26 Sacha Marino Sloan 32301287 1536 W2 L10 L12 H--- H--- H---   2.0
27 David Siegel 12595160 1676 L25 W19 D21 H--- L13     2.0
28 Dominic A Vazquez 30703139 1542 D13 L6 L20 W35 L17     1.5
29 Kyle Ewart Coventry Booth 30715175 1641 W21 L3 H--- L20 L18     1.5
30 William Milliken 11217109 1627 W32 L1 H--- L8 L19 H--- H--- 1.5
31 Samuel Agdamag 14874734 1482 H--- W35 L4 L6 U---     1.5
32 Georgia Pincus 33122236 1221 L30 L23 L18 B--- H---     1.5
33 Andrew Braithwaite 31237898 1429 L9 L12 L17 X34 L21     1.0
34 William Fitzgerald 17048414 1660 L24 F21 F19 F33 B---     1.0
35 Richard Hack 12796129 1500 H--- L31 L13 L28 F25     0.5

 

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 W14 W10 W9 W8 W5     5.0
2 Andy Liang 33236345 1300 W33 W11 W20 L5 W9     4.0
3 Julian Ossa 33237960 unr. L27 W21 W31 W12 W8     4.0
4 Mason Tobias 32440186 1227 W23 H--- W6 W20 H---     4.0
5 Tyler Garrett 33118372 1105 H--- W15 W26 W2 L1 H---   3.5
6 Alexander Kojevnikov 31856555 1184 X19 D26 L4 W15 W10     3.5
7 Bryan D Martin 14691010 1233 H--- L17 X28 W29 W18     3.5
8 Ian R Jones 33193159 1323 W32 W30 W17 L1 L3     3.0
9 Robert Turner 12407483 1380 W21 W31 L1 W13 L2 H---   3.0
10 Michael Isaiah Aspinwall 31657210 1234 X25 L1 W30 W11 L6   H--- 3.0
11 Braxton Wardle 31661706 1035 W12 L2 W27 L10 X24     3.0
12 Brandon Shien 30352643 1398 L11 W28 B--- L3 W21     3.0
13 Marcus Schaller 33237937 unr. L31 B--- W22 L9 W20     3.0
14 Daniel Smith 31779836 1146 L1 H--- X25 H--- W22     3.0
15 Eli Albukerk 30219969 1271 H--- L5 W23 L6 W30     2.5
16 Sergei Pimenov 31964181 819 L26 L23 D33 W28 W29     2.5
17 Ummon Karpe 12932259 1276 H--- W7 L8 H--- H--- U--- U--- 2.5
18 Isaac Eaves 33254972 unr. H--- H--- H--- W26 L7     2.5
19 Ian Robinett 33212973 unr. F6 H--- H--- H--- W26     2.5
20 Albert Martin Starr 12844781 1500 W22 W27 L2 L4 L13     2.0
21 Paul Blum 12748433 907 L9 L3 B--- W27 L12     2.0
22 Justin Hallman 33185951 1176 L20 X33 L13 W30 L14     2.0
23 Kurt Noble 33242812 unr. L4 W16 L15 H--- H---     2.0
24 Zhenhong Guan 15701381 1277 L30 X32 H--- H--- F11     2.0
25 Kevin Jacyna 33207052 unr. F10 H--- F14 H--- X32     2.0
26 Nicholas M Brown 12446259 1324 W16 D6 L5 L18 L19     1.5
27 Kyle Weaver 32642649 1226 W3 L20 L11 L21 H---     1.5
28 Imelda Meili Hau 32196802 554 H--- L12 F7 L16 X33     1.5
29 Jeffrey Gould 33272381 unr. H--- H--- H--- L7 L16     1.5
30 Ethan M Martin 15179785 338 W24 L8 L10 L22 L15     1.0
31 Shane Davis 32212404 1183 W13 L9 L3 U--- U---     1.0
32 Branum Edward Spliethof 32661549 793 L8 F24 U--- W33 F25     1.0
33 Vishnu Sai Vinay 32551075 787 L2 F22 D16 L32 F28     0.5

 

SwissSys 11.80.4 - Standings. 2026 Fall Tuesday Night Marathon: Extra rated

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Total Prize
1 Mason Tobias 32440186 1227 U--- W13 W14 L3 2.0  
2 Divija Hasteer 13975247 1874 U--- W10 W9 U--- 2.0  
3 Samuel Agdamag 14874734 1482 U--- U--- U--- W1 1.0  
4 Bryan D Martin 14691010 1233 U--- U--- W11 U--- 1.0  
5 Alexander Kojevnikov 31856555 1184 W12 U--- U--- U--- 1.0  
6 Branum Edward Spliethof 32661549 793 U--- U--- W15 U--- 1.0  
7 Brandon Shien 30352643 1398 U--- U--- D8 U--- 0.5  
8 Daniel Smith 31779836 1146 U--- U--- D7 U--- 0.5  
9 Zhenhong Guan 15701381 1277 U--- U--- L2 U--- 0.0  
10 Damien Robinson 16691232 857 U--- L2 U--- U--- 0.0  
11 John Chan 12561007 1500 U--- U--- L4 U--- 0.0  
12 Michael Isaiah Aspinwall 31657210 1234 L5 U--- U--- U--- 0.0  
13 Justin Hallman 33185951 1176 U--- L1 U--- U--- 0.0  
14 Braxton Wardle 31661706 1035 U--- U--- L1 U--- 0.0  
15 Paul Blum 12748433 907 U--- U--- L6 U--- 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 5. 2026 Fall Tuesday Night Marathon: 2000+

Bd Res White Res Black
1 1 IM Elliott Winslow (2203 3.5) 0 Christophe Bambou (2113 3.0)
2 0 Edward M Lewis (1966 3.0) 1 Samir Sen (2247 3.0)
3 0 Stephen Parsons (2012 2.5) 1 GM Christopher Woojin Yoo (2667 3.0)
4 ½ Jeremy David Cawthon (2098 2.5) ½ Hugo Osm Santiago (1999 2.5)
7 0 Kristian Clemens (1970 2.0) 1 Andrew Zavgorodniy (2094 2.0)
8 1 Phineas F Horowitz (1975 2.0) 0 Chase Wang (1951 2.0)
9 1 Daniel Rob Perlov (1809 2.0) 0 Zelin Fang (2023 1.5)
10 1 Divija Hasteer (1874 1.5) 0 Hector Viadiu-Ilarraza (1933 1.5)
11 ½ Christopher Powers (1916 1.5) ½ Cailen Jeremiah Melville (1843 1.5)
  1 IM Sandeep Sethuraman (2526 1.5)   BYE
  ½ Jimmy Heiserman (2299 3.0)   BYE
  ½ Rudransh Pathak (1929 2.5)   BYE
  ½ Adam Mercado (1928 0.5)   BYE
  ½ John Boyer (1816 1.0)   BYE
  ½ Dev Isak Kosuri (1802 2.0)   BYE

 

Pairings for Round 5. 2026 Fall Tuesday Night Marathon: 1600-1999

Bd Res White Res Black
5 0 Victor Yuhang Wu (1838 3.5) 1 CM Isaac Dan Zhao (1981 3.5)
12 1 Rajdeep Pinge (1974 3.0) 0 Junior Mejia (1682 3.0)
13 1 Hoa Long Tam (1692 3.0) 0 Keshav V Raman (1557 3.0)
14 0 Jamie Duif Calvin (1600 2.0) 1 Sawyer Stults (1662 2.0)
15 1 X Frederic Dutter (1900 2.5) 0 F William Xu (1484 2.5)
16 ½ Paul Krezanoski (1503 2.5) ½ Phil Ploquin (1659 2.5)
17 ½ Zachary Wickliffe (1666 2.5) ½ Shahin Aghevli (1644 2.5)
18 0 Connor Harriman (1483 2.5) 1 Richard V Finacom (1841 2.0)
19 0 David Siegel (1676 2.0) 1 Daniel Sevall (1830 2.0)
20 1 Daniel J Sisti (1577 1.5) 0 Kyle Ewart Coventry Booth (1641 1.5)
21 1 Nick Casares (1600 1.5) 0 Dominic A Vazquez (1542 1.5)
22 0 William Milliken (1627 1.5) 1 John Chan (1500 1.5)
23 1 Christian Brickhouse (1418 1.5) 0 Andrew Braithwaite (1429 1.0)
24 0 F Richard Hack (1500 0.5) 1 X Ronald Florian-Moreta (1507 1.0)
  1 William Fitzgerald (1660 0.0)   BYE
  ½ Sudarshan Seshadri (1989 3.0)   BYE
  ½ Isaac Mays-Smith (1735 2.5)   BYE
  ½ Sacha Marino Sloan (1536 1.5)   BYE
  ½ Thu Anh Le (1500 1.5)   BYE
  ½ Georgia Pincus (1221 1.0)   BYE

 

Pairings for Round 5. 2026 Fall Tuesday Night Marathon: u1600

Bd Res White Res Black
6 0 Tyler Garrett (1105 3.5) 1 Romeo Belmes Barreyro (1567 4.0)
25 1 Andy Liang (1300 3.0) 0 Robert Turner (1380 3.0)
26 0 Ian R Jones (1323 3.0) 1 Julian Ossa (unr. 3.0)
27 0 Michael Isaiah Aspinwall (1234 3.0) 1 Alexander Kojevnikov (1184 2.5)
28 1 Bryan D Martin (1233 2.5) 0 Isaac Eaves (unr. 2.5)
29 1 Marcus Schaller (unr. 2.0) 0 Albert Martin Starr (1500 2.0)
30 0 F Zhenhong Guan (1277 2.0) 1 X Braxton Wardle (1035 2.0)
31 1 Daniel Smith (1146 2.0) 0 Justin Hallman (1176 2.0)
32 1 Brandon Shien (1398 2.0) 0 Paul Blum ( 907 2.0)
33 0 Nicholas M Brown (1324 1.5) 1 Ian Robinett (unr. 1.5)
34 0 Jeffrey Gould (unr. 1.5) 1 Sergei Pimenov ( 819 1.5)
35 1 Eli Albukerk (1271 1.5) 0 Ethan M Martin ( 338 1.0)
36 0 F Branum Edward Spliethof ( 793 1.0) 1 X Kevin Jacyna (unr. 1.0)
37 1 X Imelda Meili Hau ( 554 0.5) 0 F Vishnu Sai Vinay ( 787 0.5)
  ½ Ummon Karpe (1276 2.0)   BYE
  ½ Mason Tobias (1227 3.5)   BYE
  ½ Kyle Weaver (1226 1.0)   BYE
  ½ Kurt Noble (unr. 1.5)   BYE

 

Pairings for Round 4. 2026 Fall Tuesday Night Marathon: Extra rated

Bd Res White Res Black
40 1 Samuel Agdamag (1482 0.0) 0 Mason Tobias (1227 2.0)
45 1 Mason Tobias (1227 1.0) 0 Braxton Wardle (1035 0.0)