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2026 Spring 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-spring-tuesday-night-marathon
 

Pre-TNM lecture schedule:

Mar 3: NM Daniel Cremisi

Mar 10: IM Elliott Winslow

Mar 17: Falconer Award Ceremony and lecture by this year's co-winner FM Shawnak Shivakumar!
Lecture title: "My Immortal Game — An Evening with FM Shawnak Shivakumar"
 

Mar 24: IM Elliott Winslow

Mar 31: NM Daniel Cremisi

Apr 7: Falconer Award co-winner FM Henry Deng!

Apr 14: NM Daniel Cremisi


Register or Join Wait List Change Request Form

Info

  • Date: Tue, Mar 3 - Tue, Apr 14, 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, April 14: 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: 3/3 6:30pm 3/10 6:30pm 3/17 6:30pm 3/24 6:30pm 3/31 6:30pm 4/7 6:30pm 4/14 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 March 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 rules anyone with a cumulative $600+ prize in any calendar year will need to fill out a W9 and Mechanics' Institute will be providing a 1099 form. 

 

  • Prize Fund:

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

Prizes: 2026 Spring Tuesday Night Marathon

# Name Cash Prize credited to pool Section
1 Jimmy Heiserman (5.5/2254) 400.00 Place: 1 - $500;
Place: 2 - $300;
2-way split of $800: $400 each		 2000+
2 WFM Natalya Tsodikova (5.5/2245) 400.00
5 Jeremy David Cawthon (5.0/2105) 150.00 Bestu2200: $100;
Place: 3 - $200;
2-way split of $300: $150 each
7 Andrew Zavgorodniy (5.0/2042) 150.00
15 Neil Kulkarni (4.0/1952) 33.33 Best u2000: $100;
3-way split: $33.33 each
18 Chase Wang (4.0/1898) 33.33
26 Christopher Powers (4.0/1819) 33.33
2 Richard V Finacom (5.5/1822) 300.00 Place: 1 - $300 1600-1999
7 John Boyer (5.0/1761) 125.00 Best u1800: $75;
Place: 2 - $200;
Place: 3 - $100;
​​​​3-way split of $375: $125 each
1 Frederic Dutter (5.0/1900) 125.00
6 Mikhail Chernobilskiy (5.0/1775) 125.00
21 Tao Ni (4.5/1587) 75.00 Best u1600: $75
13 Keshav V Raman (5.5/1167) 150.00 Place: 1 - $200;
Place: 2 - $100;
2-way split of $300: $150 each		 u1600
15 Andrew Burkett Rosston (5.5/1121) 150.00
5 Connor Harriman (4.5/1396) 20.00 Best u1400: $50;
Place: 3 - $50;
5-way split of $100: $20 each
1 Romeo Belmes Barreyro (4.5/1500) 20.00
3 Albert Martin Starr (4.5/1500) 20.00
7 Neel Gore (4.5/1362) 20.00
8 Ummon Karpe (4.5/1301) 20.00
14 Merlin Ethan Mackley (4.0/1140) 25.00 Best u1200: $50;
2-way split: $25 each
20 Mixtli Carter (4.0/961) 25.00

 

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.


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
  • Download Round 6 as PGN Watch Replay of Round 6
  • Download Round 7 as PGN Watch Replay of Round 7

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.

Round 1 in pdf

Round 2 in pdf.

Round 3 in pdf.

Round 4 in pdf.

Round 5 in pdf.

Round 6 in pdf.

Round 7 in pdf.

Standings

Standings are updated after each round.

SwissSys 11.79.7 - Standings. 2026 Spring Tuesday Night Marathon: 2000+

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total Probable Prize
1 Jimmy Heiserman 12799690 2254 W24 W4 W11 W6 L2 W5 H--- 5.5 400.00
2 WFM Natalya Tsodikova 12634942 2245 D18 W20 H--- W4 W1 W12 H--- 5.5 400.00
3 Jeremy David Cawthon 15038608 2105 W14 W21 L6 L7 W19 W11 W13 5.0 150.00
4 Andrew Zavgorodniy 32143889 2042 W19 L1 W18 L2 W24 W7 W6 5.0 150.00
5 IM Elliott Winslow 10363365 2237 D8 W27 D7 W19 H--- L1 W12 4.5  
6 Bradley R Diller 10079993 2122 W13 W12 W3 L1 D7 W14 L4 4.5  
7 Phillip Seitzer 12687814 2025 D20 W25 D5 W3 D6 L4 D9 4.0  
8 Neil Kulkarni 16246077 1952 D5 H--- W10 D11 W21 H--- U--- 4.0 33.33
9 Chase Wang 15015852 1898 L11 L23 W16 D15 W25 W19 D7 4.0 33.33
10 Christopher Powers 30462548 1819 H--- H--- L8 D20 D22 W17 X14 4.0 33.33
11 Quincy Chen 13716492 2097 W9 W15 L1 D8 L14 L3 W22 3.5  
12 Sudarshan Seshadri 12906250 2000 W22 L6 D21 W13 W17 L2 L5 3.5  
13 Edward Lewis 12601629 1927 L6 D22 W27 L12 W15 X21 L3 3.5  
14 Phineas F Horowitz 14209057 1925 L3 W16 W15 H--- W11 L6 F10 3.5  
15 Daniel Robert Perlov 16465203 1805 W23 L11 L14 D9 L13 W25 W16 3.5  
16 Stephen Parsons 16566932 2010 L21 L14 L9 B--- X27 W23 L15 3.0  
17 Patrick M McCollum 11040519 2000 D25 L18 D20 W22 L12 L10 W24 3.0  
18 Hector Viadiu-Ilarraza 12586903 1959 D2 W17 L4 L21 H--- H--- H--- 3.0  
19 Cailen Jeremiah Melville 14006141 1868 L4 W24 W23 L5 L3 L9 B--- 3.0  
20 Marlon Rigel 30206555 1862 D7 L2 D17 D10 H--- H--- H--- 3.0  
21 Divija Hasteer 13975247 1847 W16 L3 D12 W18 L8 F13 H--- 3.0  
22 Daniel Sevall 12811060 1827 L12 D13 D25 L17 D10 X27 L11 2.5  
23 Michael Walder 10345120 1995 L15 W9 L19 H--- H--- L16 U--- 2.0  
24 Kristian Clemens 13901075 1993 L1 L19 H--- X27 L4 H--- L17 2.0  
25 Calvin Dees 30307126 1841 D17 L7 D22 H--- L9 L15 H--- 2.0  
26 Raghu Rajaram 12698822 1883 H--- U--- U--- U--- U--- U--- U--- 0.5  
27 Eric Steger 12358270 1865 H--- L5 L13 F24 F16 F22 U--- 0.5  

SwissSys 11.79.7 - Standings. 2026 Spring Tuesday Night Marathon: 1600-1999

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total Probable Prize
1 Richard V Finacom 11452728 1822 D11 W32 W20 W22 W3 L2 W5 5.5 300.00
2 Frederic Dutter 12343420 1900 W9 D7 D19 D16 X30 W1 H--- 5.0 125.00
3 Mikhail Chernobilskiy 12878856 1775 W13 W18 W5 W7 L1 L4 W12 5.0 125.00
4 John Boyer 16865157 1761 L34 W25 W24 W26 D10 W3 D7 5.0 125.00
5 Nazaret Ramirez 32866278 1800 W25 W34 L3 X19 H--- W10 L1 4.5  
6 Andre Persids 12545869 1716 H--- X--- D29 L10 H--- W32 W13 4.5  
7 Hoa Long Tam 16919862 1656 W21 D2 X17 L3 W9 H--- D4 4.5  
8 William Milliken 11217109 1638 D28 D31 D21 W15 X29 H--- H--- 4.5  
9 Isaac S Mays-Smith 30338290 1626 L2 W27 D32 W14 L7 W22 X16 4.5  
10 Venkatagiri Acharya 15616537 1608 H--- H--- W31 W6 D4 L5 W18 4.5  
11 Tao Ni 30260481 1587 D1 D28 D36 W33 D12 H--- X19 4.5 75.00
12 Zachary Wickliffe 32140128 1711 W27 D29 L22 W21 D11 W16 L3 4.0  
13 Daniel J Sisti 12734121 1565 L3 W38 H--- X36 H--- W28 L6 4.0  
14 Dominic A Vazquez 30703139 1454 H--- L19 W35 L9 H--- W26 W27 4.0  
15 Kyle Ewart Coventry Booth 30715175 1434 D19 D24 H--- L8 H--- W35 X25 4.0  
16 Gagik Babayan 15695454 1698 L20 W37 W34 D2 W22 L12 F9 3.5  
17 Nicholas James Latourette 12779071 1676 H--- W35 F7 H--- W20 H--- U--- 3.5  
18 David Siegel 12595160 1653 W37 L3 L26 W34 D32 W21 L10 3.5  
19 Dev Isak Kosuri 31395538 1639 D15 W14 D2 F5 H--- X30 F11 3.5  
20 Sacha Marino Sloan 32301287 1522 W16 H--- L1 H--- L17 W34 D23 3.5  
21 Sawyer Stults 31608516 1521 L7 B--- D8 L12 W24 L18 W31 3.5  
22 Cibran Anton De La Fuente Álvarez 32830874 1481 H--- X23 W12 L1 L16 L9 W32 3.5  
23 Phil Ploquin 12535882 1664 H--- F22 H--- H--- L25 W38 D20 3.0  
24 David Paul Toczyski 30713291 1582 H--- D15 L4 D27 L21 H--- X33 3.0  
25 Bennett McCutcheon 30503085 1565 L5 L4 D37 W38 W23 D27 F15 3.0  
26 Samuel Agdamag 14874734 1528 H--- D33 W18 L4 L28 L14 W38 3.0  
27 John Chan 12561007 1527 L12 L9 W38 D24 W33 D25 L14 3.0  
28 Thu Anh Le 17248797 1419 D8 D11 L30 W37 W26 L13 U--- 3.0  
29 William Fitzgerald 17048414 1413 B--- D12 D6 H--- F8 H--- U--- 3.0  
30 Sarina Motwani 14944251 1528 H--- H--- W28 H--- F2 F19 U--- 2.5  
31 Christian Brickhouse 30261226 1429 H--- D8 L10 H--- F34 B--- L21 2.5  
32 Milan Patel 30830536 1414 W38 L1 D9 H--- D18 L6 L22 2.5  
33 Nicholas Morello 31114079 1750 H--- D26 H--- L11 L27 H--- F24 2.0  
34 Nursultan Uzakba 17137317 1558 W4 L5 L16 L18 X31 L20 U--- 2.0  
35 Dahlia Quinn 30654447 1522 H--- L17 L14 H--- W37 L15 U--- 2.0  
36 Abel Talamantez 12465386 1800 H--- H--- D11 F13 U--- U--- U--- 1.5  
37 Andrew Braithwaite 31237898 1453 L18 L16 D25 L28 L35 H--- H--- 1.5  
38 Nick Casares 10424364 1637 L32 L13 L27 L25 B--- L23 L26 1.0  
39 Carl Anthony Pickering 30689170 1783 H--- U--- U--- U--- U--- U--- U--- 0.5  

SwissSys 11.79.7 - Standings. 2026 Spring Tuesday Night Marathon: U1600

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total Probable Prize
1 Keshav V Raman 30692470 1167 H--- H--- W19 W22 W14 D2 W6 5.5 150.00
2 Andrew Burkett Rosston 32504699 1121 W3 W6 F14 W12 W13 D1 W5 5.5 150.00
3 Romeo Belmes Barreyro 17018168 1500 L2 W10 L7 W11 D18 W21 W8 4.5 20.00
4 Albert Martin Starr 12844781 1500 L15 W11 L9 D18 W20 W22 W13 4.5 20.00
5 Connor Harriman 31650582 1396 H--- U--- W15 W20 W16 X9 L2 4.5 20.00
6 Neel Gore 30176757 1362 W10 L2 W25 W7 H--- W14 L1 4.5 20.00
7 Ummon Karpe 12932259 1301 W26 D14 W3 L6 W17 H--- H--- 4.5 20.00
8 Richard Hack 12796129 1500 L14 W23 X24 D16 D9 W12 L3 4.0  
9 Merlin Ethan Mackley 31277598 1140 F27 W26 W4 H--- D8 F5 W18 4.0 25.00
10 Mixtli Carter 32876831 961 L6 L3 L20 B--- W24 W25 W14 4.0 25.00
11 Harvey Ching 31774953 unr. L22 L4 W26 L3 W23 W19 W21 4.0  
12 Robert Turner 12407483 1278 H--- W18 H--- L2 W15 L8 H--- 3.5  
13 Bryan D Martin 14691010 1205 W25 W19 W22 L14 L2 H--- L4 3.5  
14 Kyle Weaver 32642649 1118 W8 D7 X2 W13 L1 L6 L10 3.5  
15 Alexander Kojevnikov 31856555 1069 W4 L22 L5 W24 L12 D16 W23 3.5  
16 Danny Du Uy Cao 16939797 1272 H--- W20 H--- D8 L5 D15 U--- 3.0  
17 John Pirone 30758788 1061 H--- W21 H--- H--- L7 D18 U--- 3.0  
18 Braxton Wardle 31661706 390 H--- L12 W23 D4 D3 D17 L9 3.0  
19 Valeria Starkova 32893252 unr. B--- L13 L1 H--- H--- L11 W22 3.0  
20 Clarence Harris 12543396 1400 D23 L16 W10 L5 L4 L24 B--- 2.5  
21 Alexander Robins 31932004 1387 H--- L17 H--- W25 H--- L3 L11 2.5  
22 Mason Tobias 32440186 1276 W11 W15 L13 L1 H--- L4 L19 2.5  
23 Paul Blum 12748433 1002 D20 L8 L18 W26 L11 B--- L15 2.5  
24 Aaron Gulevich 32794524 unr. H--- H--- F8 L15 L10 W20 F25 2.0  
25 Steven Jessup 32750380 unr. L13 B--- L6 L21 W26 L10 F24 2.0  
26 Stephen L Wilson 12584515 779 L7 L9 L11 L23 L25 H--- H--- 1.0  
27 Abhinav Ketineni 13235136 unr. F9 U--- U--- U--- U--- U--- U--- 0.0  

SwissSys 11.79.7 - Standings. 2026 Spring Tuesday Night Marathon: Extra Rated

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Total Prize
1 Lucas Foerster-Yialamas 15056077 2216 U--- U--- W9 U--- U--- 1.0  
2 Stephen Parsons 16566932 2010 U--- U--- W13 U--- U--- 1.0  
3 Nazaret Ramirez 32866278 1800 U--- U--- W10 U--- U--- 1.0  
4 Hoa Long Tam 16919862 1656 U--- W12 U--- U--- U--- 1.0  
5 Isaac S Mays-Smith 30338290 1626 U--- U--- U--- U--- W11 1.0  
6 William Fitzgerald 17048414 1413 W14 U--- U--- U--- U--- 1.0  
7 Daniel Sevall 12811060 1827 U--- U--- U--- D8 U--- 0.5  
8 Dev Isak Kosuri 31395538 1639 U--- U--- U--- D7 U--- 0.5  
9 Kristian Clemens 13901075 1993 U--- U--- L1 U--- U--- 0.0  
10 Daniel J Sisti 12734121 1565 U--- U--- L3 U--- U--- 0.0  
11 Kyle Ewart Coventry Booth 30715175 1434 U--- U--- U--- U--- L5 0.0  
12 Kyle Weaver 32642649 1118 U--- L4 U--- U--- U--- 0.0  
13 Christopher De Firmian 30277917 unr. U--- U--- L2 U--- U--- 0.0  
14 Valeria Starkova 32893252 unr. L6 U--- U--- U--- U--- 0.0  

 

Pairings

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

SwissSys Report: 2026 Spring Tuesday Night Marathon

SwissSys Report: 2026 Spring Tuesday Night Marathon

SwissSys Report: 2026 Spring Tuesday Night Marathon

SwissSys Report: 2026 Spring Tuesday Night Marathon

Pairings for Round 5. 2026 Spring Tuesday Night Marathon: Extra Rated

Bd Res White Res Black
49 1 Isaac S Mays-Smith (1626 - 0.0 ) 0 Kyle Ewart Coventry Booth (1434 - 0.0 )

SwissSys Report: 2026 Spring Tuesday Night Marathon

SwissSys Report: 2026 Spring Tuesday Night Marathon

SwissSys Report: 2026 Spring Tuesday Night Marathon

SwissSys Report: 2026 Spring Tuesday Night Marathon

Pairings for Round 5. 2026 Spring Tuesday Night Marathon: Extra Rated

Bd Res White Res Black
49 1 Isaac S Mays-Smith (1626 - 0.0 ) 0 Kyle Ewart Coventry Booth (1434 - 0.0 )