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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 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
  • 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 reason.

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

2026FallTNMRound1.pdf

2026FallTNMRound2.pdf

2026FallTNMRound3.pdf

2026FallTNMRound4.pdf

2026FallTNMRound5.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 W5 W12 B--- D2 W9 W11   5.5
2 Samir Sen 12970386 2247 W17 W7 H--- D1 W12 H---   4.5
3 GM Christopher Woojin Yoo 15244943 2667 H--- H--- W4 W8 W7 H---   4.5
4 Jeremy David Cawthon 15038608 2098 W16 H--- L3 W17 D15 W12   4.0
5 Rudransh Pathak 15361216 1929 L1 H--- W14 W21 H--- W13   4.0
6 Daniel Rob Perlov 16465203 1809 H--- D8 L12 W23 W21 X15   4.0
7 Stephen Parsons 16566932 2012 W14 L2 D16 W10 L3 W19   3.5
8 Phineas F Horowitz 14209057 1975 H--- D6 W23 L3 W18 D9   3.5
9 Christophe Bambou 12734479 2113 W24 W19 D13 H--- L1 D8   3.5
10 Divija Hasteer 13975247 1874 L21 B--- D22 L7 W17 X20   3.5
11 Jimmy Heiserman 12799690 2299 W18 W21 H--- H--- H--- L1   3.5
12 Edward M Lewis 12601629 1966 B--- L1 W6 W13 L2 L4   3.0
13 Andrew Zavgorodniy 32143889 2094 H--- W23 D9 L12 W22 L5 H--- 3.0
14 Cailen Jeremiah Melville 14006141 1843 L7 D17 L5 B--- D16 W24   3.0
15 Hugo Osm Santiago 14842497 1999 H--- H--- H--- W16 D4 F6 U--- 3.0
16 Christopher Powers 30462548 1916 L4 W25 D7 L15 D14 D18   2.5
17 Hector Viadiu-Ilarraza 12586903 1933 L2 D14 W24 L4 L10 W23   2.5
18 Chase Wang 15015852 1951 L11 W24 D21 D19 L8 D16   2.5
19 Dev Isak Kosuri 31395538 1802 X--- L9 H--- D18 H--- L7   2.5
20 IM Sandeep Sethuraman 15472832 2526 H--- H--- H--- U--- B--- F10   2.5
21 Zelin Fang 17083043 2023 W10 L11 D18 L5 L6 H---   2.0
22 Kristian Clemens 13901075 1970 H--- H--- D10 H--- L13 U---   2.0
23 John Boyer 16865157 1816 W25 L13 L8 L6 H--- L17   1.5
24 Adam Mercado 16571026 1928 L9 L18 L17 H--- H--- L14   1.0
25 Michael Walder 10345120 1953 L23 L16 H--- U--- 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 W23 W31 W8 D3 W5 W4   5.5
2 Hoa Long Tam 16919862 1692 L27 W23 W26 W8 W9 D5   4.5
3 Sudarshan Seshadri 12906250 1989 W17 H--- W14 D1 H--- W18   4.5
4 Rajdeep Pinge 33104882 1974 W19 W30 D11 H--- W6 L1   4.0
5 Victor Yuhang Wu 30631341 1838 H--- W26 W33 W16 L1 D2   4.0
6 Junior Mejia 14679391 1682 H--- H--- W28 W11 L4 W16   4.0
7 Frederic Dutter 12343420 1900 L9 W24 D17 W33 X22 H---   4.0
8 Sawyer Stults 31608516 1662 W15 W9 L1 L2 W17 H---   3.5
9 Keshav V Raman 30692470 1557 W7 L8 W12 W31 L2 D10   3.5
10 Zachary Wickliffe 32140128 1666 L21 W29 W27 D22 D11 D9   3.5
11 Shahin Aghevli 30622638 1644 W29 W28 D4 L6 D10 D14   3.5
12 Richard V Finacom 11452728 1841 L16 W19 L9 W28 W13 H---   3.5
13 Connor Harriman 31650582 1483 H--- L14 W24 W30 L12 W23 U--- 3.5
14 Isaac Mays-Smith 30338290 1735 H--- W13 L3 W25 H--- D11 H--- 3.5
15 John Chan 12561007 1500 L8 L20 X35 D23 W31 W25   3.5
16 Phil Ploquin 12535882 1659 W12 W27 H--- L5 D21 L6   3.0
17 Jamie Duif Calvin 10123640 1600 L3 W32 D7 D18 L8 W28   3.0
18 Daniel Sevall 12811060 1830 D24 L22 W34 D17 W20 L3   3.0
19 Daniel J Sisti 12734121 1577 L4 L12 W32 D26 W30 H--- H--- 3.0
20 David Siegel 12595160 1676 L28 W15 D25 H--- L18 X32   3.0
21 Paul Krezanoski 16897133 1503 W10 H--- H--- H--- D16 U---   3.0
22 William Xu 33165815 1484 H--- W18 H--- D10 F7 H---   3.0
23 Nick Casares 10424364 1600 L1 L2 W29 D15 W24 L13   2.5
24 Dominic A Vazquez 30703139 1542 D18 L7 L13 W34 L23 B---   2.5
25 Christian Brickhouse 30261226 1418 L30 X35 D20 L14 W29 L15   2.5
26 Thu Anh Le 17248797 1500 W35 L5 L2 D19 H--- H--- H--- 2.5
27 Sacha Marino Sloan 32301287 1536 W2 L16 L10 H--- H--- H---   2.5
28 Ronald Florian-Moreta 33195365 1507 W20 L11 L6 L12 X34 L17   2.0
29 Andrew Braithwaite 31237898 1429 L11 L10 L23 X35 L25 W35   2.0
30 Kyle Ewart Coventry Booth 30715175 1641 W25 L4 H--- L13 L19 H--- H--- 2.0
31 William Milliken 11217109 1627 W32 L1 H--- L9 L15 H--- H--- 2.0
32 Georgia Pincus 33122236 1221 L31 L17 L19 B--- H--- F20   1.5
33 Samuel Agdamag 14874734 1482 H--- W34 L5 L7 U--- U---   1.5
34 Richard Hack 12796129 1500 H--- L33 L18 L24 F28 H--- U--- 1.0
35 William Fitzgerald 17048414 1660 L26 F25 F15 F29 B--- L29   1.0

 

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 W9 W6 W11 W4 W7 W8   6.0
2 Julian Ossa 33237960 unr. L21 W25 W32 W16 W4 W5   5.0
3 Bryan D Martin 14691010 1233 H--- L22 X30 W31 W18 W10   4.5
4 Ian R Jones 33193159 1323 W28 W26 W22 L1 L2 W14   4.0
5 Andy Liang 33236345 1300 W33 W14 W24 L7 W11 L2   4.0
6 Michael Isaiah Aspinwall 31657210 1234 X29 L1 W26 W14 L10 W15 H--- 4.0
7 Tyler Garrett 33118372 1105 H--- W12 W20 W5 L1 H---   4.0
8 Mason Tobias 32440186 1227 W17 H--- W10 W24 H--- L1   4.0
9 Daniel Smith 31779836 1146 L1 H--- X29 H--- W27 W16   4.0
10 Alexander Kojevnikov 31856555 1184 X23 D20 L8 W12 W6 L3   3.5
11 Robert Turner 12407483 1380 W25 W32 L1 W15 L5 H---   3.5
12 Eli Albukerk 30219969 1271 H--- L7 W17 L10 W26 X23   3.5
13 Sergei Pimenov 31964181 819 L20 L17 D33 W30 W31 W27   3.5
14 Braxton Wardle 31661706 1035 W16 L5 W21 L6 X19 L4   3.0
15 Marcus Schaller 33237937 unr. L32 B--- W27 L11 W24 L6   3.0
16 Brandon Shien 30352643 1398 L14 W30 B--- L2 W25 L9   3.0
17 Kurt Noble 33242812 unr. L8 W13 L12 H--- H--- W25   3.0
18 Isaac Eaves 33254972 unr. H--- H--- H--- W20 L3 H--- U--- 3.0
19 Zhenhong Guan 15701381 1277 L26 X28 H--- H--- F14 X29   3.0
20 Nicholas M Brown 12446259 1324 W13 D10 L7 L18 L23 W24   2.5
21 Kyle Weaver 32642649 1226 W2 L24 L14 L25 H--- W31   2.5
22 Ummon Karpe 12932259 1276 H--- W3 L4 H--- H--- U--- U--- 2.5
23 Ian Robinett 33212973 unr. F10 H--- H--- H--- W20 F12   2.5
24 Albert Martin Starr 12844781 1500 W27 W21 L5 L8 L15 L20   2.0
25 Paul Blum 12748433 907 L11 L2 B--- W21 L16 L17   2.0
26 Ethan M Martin 15179785 338 W19 L4 L6 L27 L12 X33   2.0
27 Justin Hallman 33185951 1176 L24 X33 L15 W26 L9 L13   2.0
28 Branum Edward Spliethof 32661549 793 L4 F19 U--- W33 F29 W30   2.0
29 Kevin Jacyna 33207052 unr. F6 H--- F9 H--- X28 F19   2.0
30 Imelda Meili Hau 32196802 554 H--- L16 F3 L13 X33 L28   1.5
31 Jeffrey Gould 33272381 unr. H--- H--- H--- L3 L13 L21   1.5
32 Shane Davis 32212404 1183 W15 L11 L2 U--- U--- U---   1.0
33 Vishnu Sai Vinay 32551075 787 L5 F27 D13 L28 F30 F26   0.5

 

Pairings

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

 

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Pairings for Round 6. 2026 Fall Tuesday Night Marathon: 2000+

Bd Res White Res Black
1 0 Jimmy Heiserman (2299 b 3.5) 1 IM Elliott Winslow (2203 b 4.5)
2 ½ Christophe Bambou (2113 w 3.0) ½ Phineas F Horowitz (1975 b 3.0)
3 0 Edward M Lewis (1966 b 3.0) 1 Jeremy David Cawthon (2098 b 3.0)
4 0 Andrew Zavgorodniy (2094 w 3.0) 1 Rudransh Pathak (1929 B 3.0)
7 0 F Hugo Osm Santiago (1999 w 3.0) 1 X Daniel Rob Perlov (1809 b 3.0)
8 0 Dev Isak Kosuri (1802 w 2.5) 1 Stephen Parsons (2012 BB 2.5)
9 0 F IM Sandeep Sethuraman (2526 - 2.5) 1 X Divija Hasteer (1874 b 2.5)
10 ½ Chase Wang (1951 W 2.0) ½ Christopher Powers (1916 B 2.0)
11 1 Cailen Jeremiah Melville (1843 w 2.0) 0 Adam Mercado (1928 BB 1.0)
12 1 Hector Viadiu-Ilarraza (1933 W 1.5) 0 John Boyer (1816 b 1.5)
  ½ GM Christopher Woojin Yoo (2667 W 4.0)   BYE
  ½ Samir Sen (2247 w 4.0)   BYE
  ½ Zelin Fang (2023 WW 1.5)   BYE

 

Pairings for Round 6. 2026 Fall Tuesday Night Marathon: 1600-1999

Bd Res White Res Black
5 1 CM Isaac Dan Zhao (1981 WW 4.5) 0 Rajdeep Pinge (1974 b 4.0)
13 ½ Victor Yuhang Wu (1838 b 3.5) ½ Hoa Long Tam (1692 B 4.0)
14 0 Ronald Florian-Moreta (1507 w 2.0) 1 Jamie Duif Calvin (1600 B 2.0)
15 0 Daniel Sevall (1830 W 3.0) 1 Sudarshan Seshadri (1989 BB 3.5)
16 ½ Shahin Aghevli (1644 WW 3.0) ½ Isaac Mays-Smith (1735 B 3.0)
17 1 Junior Mejia (1682 W 3.0) 0 Phil Ploquin (1659 w 3.0)
18 ½ Keshav V Raman (1557 W 3.0) ½ Zachary Wickliffe (1666 B 3.0)
19 1 John Chan (1500 w 2.5) 0 Christian Brickhouse (1418 b 2.5)
20 1 Connor Harriman (1483 b 2.5) 0 Nick Casares (1600 B 2.5)
21 1 X David Siegel (1676 b 2.0) 0 F Georgia Pincus (1221 B 1.5)
22 1 Andrew Braithwaite (1429 WW 1.0) 0 William Fitzgerald (1660 B 1.0)
  1 Dominic A Vazquez (1542 W 1.5)   BYE
  ½ Frederic Dutter (1900 WW 3.5)   BYE
  ½ Richard V Finacom (1841 W 3.0)   BYE
  ½ Sawyer Stults (1662 W 3.0)   BYE
  ½ Kyle Ewart Coventry Booth (1641 w 1.5)   BYE
  ½ William Milliken (1627 b 1.5)   BYE
  ½ Daniel J Sisti (1577 B 2.5)   BYE
  ½ Sacha Marino Sloan (1536 W 2.0)   BYE
  ½ Richard Hack (1500 W 0.5)   BYE
  ½ Thu Anh Le (1500 b 2.0)   BYE
  ½ William Xu (1484 b 2.5)   BYE

 

Pairings for Round 6. 2026 Fall Tuesday Night Marathon: u1600

Bd Res White Res Black
6 0 Mason Tobias (1227 W 4.0) 1 Romeo Belmes Barreyro (1567 B 5.0)
23 1 Julian Ossa (unr. W 4.0) 0 Andy Liang (1300 B 4.0)
24 0 Alexander Kojevnikov (1184 w 3.5) 1 Bryan D Martin (1233 BB 3.5)
25 0 Braxton Wardle (1035 b 3.0) 1 Ian R Jones (1323 B 3.0)
26 1 Daniel Smith (1146 b 3.0) 0 Brandon Shien (1398 b 3.0)
27 1 Michael Isaiah Aspinwall (1234 b 3.0) 0 Marcus Schaller (unr. b 3.0)
28 0 F Ian Robinett (unr. W 2.5) 1 X Eli Albukerk (1271 b 2.5)
29 1 Sergei Pimenov ( 819 W 2.5) 0 Justin Hallman (1176 w 2.0)
30 1 X Zhenhong Guan (1277 W 2.0) 0 F Kevin Jacyna (unr. - 2.0)
31 1 Kurt Noble (unr. WW 2.0) 0 Paul Blum ( 907 w 2.0)
32 0 Albert Martin Starr (1500 W 2.0) 1 Nicholas M Brown (1324 B 1.5)
33 1 Kyle Weaver (1226 w 1.5) 0 Jeffrey Gould (unr. b 1.5)
34 0 Imelda Meili Hau ( 554 w 1.5) 1 Branum Edward Spliethof ( 793 w 1.0)
35 1 X Ethan M Martin ( 338 WW 1.0) 0 F Vishnu Sai Vinay ( 787 BB 0.5)
  ½ Robert Turner (1380 W 3.0)   BYE
  ½ Tyler Garrett (1105 BB 3.5)   BYE
  ½ Isaac Eaves (unr. w 2.5)   BYE

 

Pairings for Round 5. 2026 Fall Tuesday Night Marathon: Extra rated

Bd Res White Res Black
35 0 Daniel Rob Perlov (1809 - 0.0) 1 Divija Hasteer (1874 BB 2.0)
36 0 Dominic A Vazquez (1542 - 0.0) 1 David Siegel (1676 - 0.0)
37 0 Ethan M Martin ( 338 - 0.0) 1 Isaac Eaves (unr. - 0.0)
40 1 Samuel Agdamag (1482 B 1.0) 0 Sacha Marino Sloan (1536 - 0.0)