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2026 Winter 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-winter-tuesday-night-marathon

Pre-TNM lecture schedule:

11/3 -- GM Mark Heimann

11/10 -- GM Fidel Corrales

11/17 -- GM Sam Shankland

11/24 -- IM John Donaldson

12/1 -- IM Ladia Jirasek

12/8 -- IM Elliott Winslow

12/15 -- NM Sebby Suarez

 


Register or Join Wait List Change Request Form

Info

  • Date: Tue, Nov 3 - Tue, Dec 15, 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, December 15: 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: 11/3 6:30pm 11/10 6:30pm 11/17 6:30pm 11/24 6:30pm 12/1 6:30pm 12/8 6:30pm 12/15 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 Nov 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

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.

 

2026WinterTNMRd1.pdf

2026WinterTNMRd2.pdf

Standings

Standings are updated after each round.

SwissSys 11.80.5 - Standings. 2026 Winter 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 2287 W15 W12           2.0
2 Amarsaikhan Dashtogtokh 30595498 2169 W16 W14           2.0
3 Daniel Robert Perlov 16465203 1828 B--- W10           2.0
4 David Spencer 11109501 2150 W17 D6           1.5
5 Jeremy David Cawthon 15038608 2107 D18 W21           1.5
6 Sheel Dandekar 12604772 2023 W9 D4   H---       1.5
7 Kristian Clemens 13901075 1977 H--- W20           1.5
8 Sebastian Suarez 16875347 2316 H--- D13           1.0
9 IM Elliott Winslow 10363365 2228 L6 W24           1.0
10 Quincy Chen 13716492 2124 W22 L3           1.0
11 Bradley R Diller 10079993 2104 H--- D19           1.0
12 Christophe Bambou 12734479 2095 W24 L1           1.0
13 Phillip Seitzer 12687814 2073 D23 D8           1.0
14 Rudransh Pathak 15361216 2046 W25 L2           1.0
15 Stephen Parsons 16566932 2024 L1 W25           1.0
16 Zeno Kalonaris 16307134 2019 L2 B---           1.0
17 CM Isaac Dan Zhao 31617557 1996 L4 W23           1.0
18 Naga Abhiram Ponnaluri 17010328 1981 D5 H---           1.0
19 Michael Walder 10345120 1900 H--- D11           1.0
20 Abhishek Mallela 12888811 2135 D21 L7           0.5
21 Sudarshan Seshadri 12906250 1994 D20 L5           0.5
22 Phineas F Horowitz 14209057 1992 L10 H---           0.5
23 Kayven Riese 12572270 1923 D13 L17           0.5
24 Edward M Lewis 12601629 1960 L12 L9           0.0
25 Cailen Jeremiah Melville 14006141 1897 L14 L15           0.0

 

SwissSys 11.80.5 - Standings. 2026 Winter Tuesday Night Marathon: 1600-1999

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total
1 Frederic Dutter 12343420 1900 W20 W18           2.0
2 Samuel Joseph Petty 12582250 1771 W37 W26           2.0
3 Isaac S Mays-Smith 30338290 1742 W23 W17           2.0
4 William Gray 13217831 1920 H--- W29           1.5
5 Daniel Sevall 12811060 1850 D29 W30         H--- 1.5
6 Calvin Dees 30307126 1806 X35 H--- H---         1.5
7 Anish Rapaka 30668600 1788 X22 D12           1.5
8 Hoa Long Tam 16919862 1713 H--- W32           1.5
9 Joshua Lamste 15487526 1710 W31 H---   H---       1.5
10 Gagik Babayan 15695454 1699 D32 W33           1.5
11 Phil Ploquin 12535882 1685 D15 W34           1.5
12 Julian Patricio Ossa 33237960 1662 W25 D7   H--- H---     1.5
13 Zachary Wickliffe 32140128 1642 D28 W27           1.5
14 Kyle Ewart Coventry Booth 30715175 1603 H--- W28 H---         1.5
15 Tyler Bard 13221335 1512 D11 X35           1.5
16 Richard V Finacom 11452728 1816 D21 D24           1.0
17 Mikhail Chernobilskiy 12878856 1798 W36 L3           1.0
18 Shahin Aghevli 30622638 1718 W38 L1           1.0
19 David Siegel 12595160 1666 H--- H---           1.0
20 Cibran Anton De La Fuente Alvarez 32830874 1648 L1 W37       H--- H--- 1.0
21 William Fitzgerald 17048414 1627 D16 H---         H--- 1.0
22 Henry Xiao 16167955 1611 F7 W38           1.0
23 Simone Maria Macario 33276035 1600 L3 W36           1.0
24 David Paul Toczyski 30713291 1531 H--- D16           1.0
25 John Chan 12561007 1500 L12 B---           1.0
26 Andrew Braithwaite 31237898 1397 B--- L2   H---       1.0
27 Romulo Silvestre 16920915 1969 H--- L13           0.5
28 Hovik Manvelyan 12909955 1850 D13 L14 H---         0.5
29 Sawyer Stults 31608516 1639 D5 L4           0.5
30 Binh Khac Nguyen 31695943 1593 H--- L5       H--- H--- 0.5
31 Dominic A Vazquez 30703139 1523 L9 H---       H---   0.5
32 Thu Anh Le 17248797 1514 D10 L8           0.5
33 Sacha Marino Sloan 32301287 1509 H--- L10           0.5
34 Richard Hack 12796129 1500 H--- L11           0.5
35 Charlie Schaezlein 31629140 1617 F6 F15           0.0
36 Jamie Duif Calvin 10123640 1615 L17 L23           0.0
37 Nick Casares 10424364 1600 L2 L20           0.0
38 Adam Baraz 12648001 1596 L18 L22           0.0

 

SwissSys 11.80.5 - Standings. 2026 Winter Tuesday Night Marathon: U1600

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total
1 Nathan Parcells 32691743 1500 W23 W17           2.0
2 Tyler Garrett 33118372 1318 W20 W19           2.0
3 Ian Robinett 33212973 1291 W33 W22           2.0
4 Marcus Todd Schaller 33237937 1241 W34 W14   H---       2.0
5 Kyle Weaver 32642649 1190 W13 W16           2.0
6 Ian R Jones 33193159 1506 H--- W24   H---       1.5
7 Bryan D Martin 14691010 1333 D26 W25           1.5
8 Dylan Asher Skurow 32467183 1318 H--- W28           1.5
9 Brandon Shien 30352643 1299 W32 H---           1.5
10 Alexander Robins 31932004 1286 H--- W30 H---         1.5
11 Christopher Bender 33266244 1255 W29 H---           1.5
12 Noah Alexander Bo 33354634 unr. W18 H---           1.5
13 Albert Martin Starr 12844781 1500 L5 W26           1.0
14 Robert Turner 12407483 1468 W31 L4       H--- H--- 1.0
15 Mason Tobias 32440186 1359 L19 W32           1.0
16 Anthony Lawson Defranco 32790409 1321 W27 L5           1.0
17 Alexander Kojevnikov 31856555 1288 W21 L1           1.0
18 Zhenhong Guan 15701381 1237 L12 W33           1.0
19 Sumit Roy 12652016 1084 W15 L2   H---     H--- 1.0
20 Isaac Eaves 33254972 1046 L2 W34 H--- H---       1.0
21 Jeff B Gould 33272381 886 L17 X31           1.0
22 Ewan Ellis Mellor 17270550 unr. B--- L3           1.0
23 Eli Albukerk 30219969 1231 L1 H---           0.5
24 Eli Kleiner Chanoff 12898987 1231 H--- L6           0.5
25 Georgia Pincus 33122236 1221 H--- L7       H--- H--- 0.5
26 Braxton Wardle 31661706 1055 D7 L13           0.5
27 John Pirone 30758788 1050 L16 D29           0.5
28 Paul Blum 12748433 863 H--- L8           0.5
29 Evan Jay Baltman 33189394 850 L11 D27   H---       0.5
30 Ege Kaan Duman 33338013 unr. H--- L10           0.5
31 Renate Otterbach 14565208 1173 L14 F21           0.0
32 Justin Adam Hallman 33185951 1005 L9 L15           0.0
33 Sergei Pimenov 31964181 969 L3 L18           0.0
34 Ethan M Martin 15179785 419 L4 L20           0.0

 

SwissSys 11.80.5 - Standings. 2026 Winter Tuesday Night Marathon: Extra Rated

# Name ID Rating Rd 1 Rd 2 Total
1 Scott Mason 12456663 1976 W6 U--- 1.0
2 Daniel Robert Perlov 16465203 1828 W7 U--- 1.0
3 Tyler Bard 13221335 1512 U--- W8 1.0
4 Krishnakanth Rapaka 15343534 2048 D5 U--- 0.5
5 Ewan Ellis Mellor 17270550 unr. D4 U--- 0.5
6 Anish Rapaka 30668600 1788 L1 U--- 0.0
7 Antonio T Redden 12579846 1759 L2 U--- 0.0
8 John Chan 12561007 1500 U--- L3 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 Winter Tuesday Night Marathon: 2000+

Bd Res White Res Black
1 1 Jimmy Heiserman (2287 W 1.0) 0 Christophe Bambou (2095 B 1.0)
2 1 Amarsaikhan Dashtogtokh (2169 W 1.0) 0 Rudransh Pathak (2046 B 1.0)
3 ½ Sheel Dandekar (2023 W 1.0) ½ David Spencer (2150 B 1.0)
4 1 Daniel Robert Perlov (1828 - 1.0) 0 Quincy Chen (2124 B 1.0)
7 ½ Phillip Seitzer (2073 W 0.5) ½ Sebastian Suarez (2316 - 0.5)
8 0 Abhishek Mallela (2135 W 0.5) 1 Kristian Clemens (1977 - 0.5)
9 1 Jeremy David Cawthon (2107 W 0.5) 0 Sudarshan Seshadri (1994 B 0.5)
10 ½ Michael Walder (1900 - 0.5) ½ Bradley R Diller (2104 - 0.5)
11 1 CM Isaac Dan Zhao (1996 W 0.0) 0 Kayven Riese (1923 B 0.5)
12 0 Edward M Lewis (1960 W 0.0) 1 IM Elliott Winslow (2228 B 0.0)
13 0 Cailen Jeremiah Melville (1897 W 0.0) 1 Stephen Parsons (2024 B 0.0)
  1 Zeno Kalonaris (2019 B 0.0)   BYE
  ½ Phineas F Horowitz (1992 W 0.0)   BYE
  ½ Naga Abhiram Ponnaluri (1981 B 0.5)   BYE

 

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

Bd Res White Res Black
5 1 Frederic Dutter (1900 W 1.0) 0 Shahin Aghevli (1718 B 1.0)
14 0 Jamie Duif Calvin (1615 W 0.0) 1 Simone Maria Macario (1600 B 0.0)
15 1 Isaac S Mays-Smith (1742 W 1.0) 0 Mikhail Chernobilskiy (1798 B 1.0)
16 0 Andrew Braithwaite (1397 - 1.0) 1 Samuel Joseph Petty (1771 B 1.0)
17 ½ Anish Rapaka (1788 - 1.0) ½ Julian Patricio Ossa (1662 B 1.0)
18 1 Zachary Wickliffe (1642 W 0.5) 0 Romulo Silvestre (1969 - 0.5)
19 1 William Gray (1920 - 0.5) 0 Sawyer Stults (1639 B 0.5)
20 1 Kyle Ewart Coventry Booth (1603 - 0.5) 0 Hovik Manvelyan (1850 B 0.5)
21 1 Daniel Sevall (1850 W 0.5) 0 Binh Khac Nguyen (1593 - 0.5)
22 ½ David Paul Toczyski (1531 - 0.5) ½ Richard V Finacom (1816 B 0.5)
23 0 Thu Anh Le (1514 W 0.5) 1 Hoa Long Tam (1713 - 0.5)
24 0 Sacha Marino Sloan (1509 - 0.5) 1 Gagik Babayan (1699 B 0.5)
25 1 Phil Ploquin (1685 W 0.5) 0 Richard Hack (1500 - 0.5)
26 0 F Charlie Schaezlein (1617 - 0.0) 1 X Tyler Bard (1512 B 0.5)
27 0 Nick Casares (1600 W 0.0) 1 Cibran Anton De La Fuente Alvarez (1648 B 0.0)
28 0 Adam Baraz (1596 W 0.0) 1 Henry Xiao (1611 - 0.0)
  1 John Chan (1500 W 0.0)   BYE
  ½ Calvin Dees (1806 - 1.0)   BYE
  ½ Joshua Lamste (1710 W 1.0)   BYE
  ½ David Siegel (1666 - 0.5)   BYE
  ½ William Fitzgerald (1627 W 0.5)   BYE
  ½ Dominic A Vazquez (1523 B 0.0)   BYE

 

Pairings for Round 2. 2026 Winter Tuesday Night Marathon: U1600

Bd Res White Res Black
6 0 Alexander Kojevnikov (1288 W 1.0) 1 Nathan Parcells (1500 B 1.0)
29 1 Marcus Todd Schaller (1241 W 1.0) 0 Robert Turner (1468 B 1.0)
30 0 Anthony Lawson Defranco (1321 W 1.0) 1 Kyle Weaver (1190 B 1.0)
31 0 Ewan Ellis Mellor (unr. - 1.0) 1 Ian Robinett (1291 B 1.0)
32 0 Sumit Roy (1084 B 1.0) 1 Tyler Garrett (1318 B 1.0)
33 1 Ian R Jones (1506 - 0.5) 0 Eli Kleiner Chanoff (1231 - 0.5)
34 0 Georgia Pincus (1221 - 0.5) 1 Bryan D Martin (1333 B 0.5)
35 1 Dylan Asher Skurow (1318 - 0.5) 0 Paul Blum ( 863 - 0.5)
36 1 Alexander Robins (1286 - 0.5) 0 Ege Kaan Duman (unr. - 0.5)
37 0 Braxton Wardle (1055 W 0.5) 1 Albert Martin Starr (1500 W 0.0)
38 1 Mason Tobias (1359 W 0.0) 0 Justin Adam Hallman (1005 B 0.0)
39 0 Sergei Pimenov ( 969 W 0.0) 1 Zhenhong Guan (1237 B 0.0)
40 0 F Renate Otterbach (1173 W 0.0) 1 X Jeff B Gould ( 886 B 0.0)
41 ½ Evan Jay Baltman ( 850 W 0.0) ½ John Pirone (1050 B 0.0)
42 1 Isaac Eaves (1046 W 0.0) 0 Ethan M Martin ( 419 B 0.0)
  ½ Brandon Shien (1299 W 1.0)   BYE
  ½ Christopher Bender (1255 B 1.0)   BYE
  ½ Eli Albukerk (1231 W 0.0)   BYE
  ½ Noah Alexander Bo (unr. W 1.0)   BYE

 

Pairings for Round 2. 2026 Winter Tuesday Night Marathon: Extra Rated

Bd Res White Res Black
43 1 Tyler Bard (1512 - 0.0) 0 John Chan (1500 - 0.0)