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Archived Tournament

2025 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/2025-mechanics-institute-tuesday-night-marathon-winter/games

 

Pre-TNM lecture schedule:

11/4 NM Daniel Cremisi

11/11 IM Elliott Winslow

11/18 IM Elliott Winslow

11/25 NM Daniel Cremisi

12/2 NM Daniel Cremisi

12/9 Lauren Goodkind

12/16 GM Sam Shankland


Register or Join Wait List Change Request Form

Info

  • Date: Tue, Nov 4 - Tue, Dec 16, 2025
  • 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 16: 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: 11/4 6:30pm 11/11 6:30pm 11/18 6:30pm 11/25 6:30pm 12/2 6:30pm 12/9 6:30pm 12/16 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 2025 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: coming after the tournament ended.
  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.


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.

 

Round 1 in pdf.

Round 2 in pdf.

Round 3 in pdf.

Round 4 in pdf.

Standings

Standings are updated after each round.

SwissSys Standings. 2025 Winter Tuesday Night Marathon: 2000+

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total
1 Eilon Lavi 16731183 2120 W22 W13 W6 W4   H--- H--- 4.0
2 Quincy Chen 13716492 2050 D21 W24 W12 D6       3.0
3 Phineas F Horowitz 14209057 1931 L6 W16 W24 W17       3.0
4 WFM Natalya Tsodikova 12634942 2246 H--- W23 W21 L1       2.5
5 Aadit Bhatia 16689603 2246 W14 D17 H--- H---       2.5
6 IM Elliott Winslow 10363365 2207 W3 W10 L1 D2       2.5
7 Abhishek Mallela 12888811 2127 H--- H--- W15 H---       2.5
8 Michael Walder 10345120 1944 H--- D11 D10 W14       2.5
9 Neil Kulkarni 16246077 1926 D12 D18 D13 W21       2.5
10 Daniel Robert Perlov 16465203 1826 B--- L6 D8 W20       2.5
11 Aryan Balyan 15273590 2232 D15 D8 D17 H--- H--- H--- U--- 2.0
12 Christopher Timothy Atkeson 17080462 2103 D9 W25 L2 H---       2.0
13 Sudarshan Seshadri 12906250 2010 W16 L1 D9 H--- H---     2.0
14 Stephen Parsons 16566932 1966 L5 W22 W23 L8       2.0
15 Kristian Clemens 13901075 1941 D11 H--- L7 W18     H--- 2.0
16 Roger Christopher Smith 14437543 1891 L13 L3 W27 W23       2.0
17 Raghu Rajaram 12698822 1839 W19 D5 D11 L3       2.0
18 Patrick M McCollum 11040519 2000 L23 D9 W25 L15       1.5
19 Kyle Chan 30063365 1997 L17 H--- H--- H---       1.5
20 Edward Lewis 12601629 1979 D24 L21 W22 L10       1.5
21 Cailen Jeremiah Melville 14006141 1925 D2 W20 L4 L9       1.5
22 Daniel Sevall 12811060 1930 L1 L14 L20 W26     H--- 1.0
23 Yonathan Admassu 15323127 1851 W18 L4 L14 L16       1.0
24 Aron Sarmasi 32263284 1829 D20 L2 L3 D25       1.0
25 Naga Abhiram Ponnaluri 17010328 1822 H--- L12 L18 D24       1.0
26 Nick, Jr Casares 10424364 1600 U--- U--- U--- L22       0.0
27 John Chan 12561007 1538 U--- U--- L16 U---       0.0

 

SwissSys Standings. 2025 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 Calvin Dees 30307126 1518 W19 W6 W7 H---     H--- 3.5
2 Michael Cafiero 31431203 1806 W26 D3 W14 H---       3.0
3 John Boyer 16865157 1671 W13 D2 W18 H---       3.0
4 Isaac S Mays-Smith 30338290 1615 D5 H--- W24 X17       3.0
5 Hayes Alexander Marvin 30636603 1922 D4 W24 D9 H---       2.5
6 Robert Crompton 31442886 1796 W28 L1 H--- W21       2.5
7 Christopher Powers 30462548 1769 W16 W12 L1 H---       2.5
8 Hoa Long Tam 16919862 1721 D22 L14 W28 W23       2.5
9 Nicholas Morello 31114079 1712 D23 W27 D5 H---     H--- 2.5
10 Gagik Babayan 15695454 1684 L12 W26 D23 W18       2.5
11 Nicholas James Latourette 12779071 1634 H--- D22 W15 H---       2.5
12 Joseph Karwat 16761266 1487 W10 L7 H--- W19       2.5
13 Zachary Wickliffe 32140128 1480 L3 B--- W20 H---       2.5
14 David Paul Toczyski 30713291 1455 H--- W8 L2 X25       2.5
15 Daniel J Sisti 12734121 1579 H--- D23 L11 X28 H---     2.0
16 John Chan 12561007 1538 L7 L20 B--- X27       2.0
17 Christian Brickhouse 30261226 1410 H--- H--- W22 F4   H---   2.0
18 Frederic Dutter 12343420 1900 W25 H--- L3 L10       1.5
19 Phil Ploquin 12535882 1709 L1 D25 W26 L12       1.5
20 David Siegel 12595160 1631 L24 W16 L13 H---       1.5
21 Bennet McCutcheon 30503085 1617 H--- H--- H--- L6       1.5
22 Sawyer Stults 31608516 1537 D8 D11 L17 H---       1.5
23 Eric Liu 12929670 1524 D9 D15 D10 L8       1.5
24 Paul Henry Reed 13373197 1455 W20 L5 L4 H---       1.5
25 Charlie Schaezlein 31629140 1610 L18 D19 D27 F14       1.0
26 Nick, Jr Casares 10424364 1600 L2 L10 L19 B---       1.0
27 Sacha Marino Sloan 32301287 1433 H--- L9 D25 F16       1.0
28 Nursultan Uzakbaev 17137317 1590 L6 H--- L8 F15       0.5

 

SwissSys Standings. 2025 Winter Tuesday Night Marathon: u1600

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total
1 Soham Mehta 30525452 1407 W9 X25 D4 W5       3.5
2 William Fitzgerald 17048414 1336 H--- W19 W17 W8       3.5
3 Richard Hack 12796129 1504 W27 W22 H--- H---       3.0
4 Andrew Braithwaite 31237898 1392 W21 W14 D1 H---       3.0
5 Alexander Borisovich Menchtchikov 32554854 1338 W10 W7 W13 L1       3.0
6 Alexander Robins 31932004 1268 H--- H--- W22 W15       3.0
7 Danny Du Uy Cao 16939797 1159 W26 L5 W12 X14       3.0
8 Milan Patel 30830536 1380 D28 W11 W20 L2       2.5
9 Steven Lee Myers 30700928 1130 L1 D26 W28 X18       2.5
10 John Pirone 30758788 992 L5 H--- W26 W19       2.5
11 Kyle Weaver 32642649 unr. W15 L8 H--- W20       2.5
12 Albert Martin Starr 12844781 1500 L20 W28 L7 W24       2.0
13 Robert Turner 12407483 1341 W16 H--- L5 H---   H---   2.0
14 Carlos Galvez 30263086 1247 W23 L4 W25 F7       2.0
15 Thu Anh Le 17248797 1247 L11 W21 W23 L6   H--- H--- 2.0
16 Paul Blum 12748433 1034 L13 L17 X27 X25       2.0
17 Dominic A Vazquez 30703139 1388 L22 W16 L2 H---       1.5
18 Ummon Karpe 12932259 1331 H--- H--- H--- F9       1.5
19 Bryan D Martin 14691010 1264 H--- L2 B--- L10       1.5
20 Mason Tobias 32440186 1135 W12 H--- L8 L11       1.5
21 Andrew Burkett Rosston 32504699 1118 L4 L15 H--- W28       1.5
22 Renate Otterbach 14565208 1116 W17 L3 L6 H---       1.5
23 Tristan Saucedo 30981868 947 L14 W27 L15 H---       1.5
24 Kate Canessa 14102056 560 H--- U--- H--- L12       1.0
25 Branum Spliethof 32661549 unr. B--- F1 L14 F16       1.0
26 Sebastian Chodakowski 32591442 unr. L7 D9 L10 H---       1.0
27 Shaikat Hossain 17207363 1141 L3 L23 F16 H---       0.5
28 Alexander Kojevnikov 31856555 1110 D8 L12 L9 L21       0.5

 

SwissSys Standings. 2025 Winter Tuesday Night Marathon: Extra Rated

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Total
1 Daniel Robert Perlov 16465203 1826 W11 U--- U--- U--- 1.0
2 Daniel J Sisti 12734121 1579 U--- U--- U--- W9 1.0
3 Bryan D Martin 14691010 1264 U--- U--- W10 U--- 1.0
4 Danny Du Uy Cao 16939797 1159 U--- U--- U--- W10 1.0
5 John Chan 12561007 1538 U--- U--- U--- D6 0.5
6 Samuel Agdamag 14874734 1514 U--- U--- U--- D5 0.5
7 Mason Tobias 32440186 1135 U--- D8 U--- U--- 0.5
8 Kate Canessa 14102056 560 U--- D7 U--- U--- 0.5
9 Steven Lee Myers 30700928 1130 U--- U--- U--- L2 0.0
10 Paul Blum 12748433 1034 U--- U--- L3 L4 0.0
11 Branum Spliethof 32661549 unr. L1 U--- U--- U--- 0.0

 

Pairings

Round 1 pairings are available onsite at 6:15pm on Tuesday.

Round 2-7 pairings are posted on Monday by 8pm.

Pairings for Round 4. 2025 Winter Tuesday Night Marathon: 2000+

Bd Res White Res Black
1 0 WFM Natalya Tsodikova (2246 b 2.5 ) 1 Eilon Lavi (2120 B 3.0 )
2 ½ IM Elliott Winslow (2207 W 2.0 ) ½ Quincy Chen (2050 B 2.5 )
3 0 Raghu Rajaram (1839 B 2.0 ) 1 Phineas F Horowitz (1931 B 2.0 )
4 1 Michael Walder (1944 w 1.5 ) 0 Stephen Parsons (1966 B 2.0 )
7 1 Daniel Robert Perlov (1826 b 1.5 ) 0 Edward Lewis (1979 B 1.5 )
8 1 Kristian Clemens (1941 b 1.0 d) 0 Patrick M McCollum (2000 B 1.5 )
9 0 Cailen Jeremiah Melville (1925 W 1.5 ) 1 Neil Kulkarni (1926 B 1.5 )
10 0 Yonathan Admassu (1851 W 1.0 ) 1 Roger Christopher Smith (1891 B 1.0 )
11 ½ Aron Sarmasi (1829 W 0.5 ) ½ Naga Abhiram Ponnaluri (1822 b 0.5 )
12 0 Nick, Jr Casares (1600 - 0.0 ) 1 Daniel Sevall (1930 W 0.0 )
  ½ Aadit Bhatia (2246 b 2.0 D)   BYE
  ½ Aryan Balyan (2232 WW 1.5 )   BYE
  ½ Abhishek Mallela (2127 W 2.0 d)   BYE
  ½ Kyle Chan (1997 W 1.0 Dd)   BYE
  ½ Christopher Timothy Atkeson (2103 W 1.5 )   BYE
  ½ Sudarshan Seshadri (2010 W 1.5 )   BYE

 

Pairings for Round 4. 2025 Winter Tuesday Night Marathon: 1600-1999

Bd Res White Res Black
5 1 X Isaac S Mays-Smith (1615 w 2.0 d) 0 F Christian Brickhouse (1410 B 2.0 d)
12 1 Gagik Babayan (1684 W 1.5 ) 0 Frederic Dutter (1900 w 1.5 d)
13 1 Robert Crompton (1796 w 1.5 D) 0 Bennet McCutcheon (1617 - 1.5 Dd)
14 1 Hoa Long Tam (1721 WW 1.5 ) 0 Eric Liu (1524 B 1.5 )
15 1 Joseph Karwat (1487 w 1.5 D) 0 Phil Ploquin (1709 B 1.5 )
16 0 F Charlie Schaezlein (1610 W 1.0 ) 1 X David Paul Toczyski (1455 w 1.5 )
17 1 X John Chan (1538 w 1.0 D) 0 F Sacha Marino Sloan (1433 b 1.0 )
18 1 X Daniel J Sisti (1579 w 1.0 ) 0 F Nursultan Uzakbaev (1590 b 0.5 d)
  1 Nick, Jr Casares (1600 WW 0.0 )   Full Point Bye
  ½ Nicholas James Latourette (1634 b 2.0 )   BYE
  ½ Calvin Dees (1518 BB 3.0 )   BYE
  ½ Michael Cafiero (1806 BB 2.5 )   BYE
  ½ John Boyer (1671 B 2.5 )   BYE
  ½ Christopher Powers (1769 W 2.0 )   BYE
  ½ Hayes Alexander Marvin (1922 W 2.0 )   BYE
  ½ David Siegel (1631 W 1.0 )   BYE
  ½ Paul Henry Reed (1455 B 1.0 )   BYE
  ½ Nicholas Morello (1712 BB 2.0 )   BYE
  ½ Zachary Wickliffe (1480 b 2.0 d)   BYE
  ½ Sawyer Stults (1537 W 1.0 )   BYE

 

Pairings for Round 4. 2025 Winter Tuesday Night Marathon: u1600

Bd Res White Res Black
6 0 Alexander Borisovich Menchtchikov (1338 WW 3.0 ) 1 Soham Mehta (1407 b 2.5 d)
19 0 Milan Patel (1380 WW 2.5 ) 1 William Fitzgerald (1336 b 2.5 )
20 1 Alexander Robins (1268 W 2.0 d) 0 Thu Anh Le (1247 B 2.0 )
21 0 F Carlos Galvez (1247 W 2.0 ) 1 X Danny Du Uy Cao (1159 W 2.0 )
22 0 F Ummon Karpe (1331 - 1.5 Dd) 1 X Steven Lee Myers (1130 B 1.5 )
23 1 John Pirone ( 992 b 1.5 d) 0 Bryan D Martin (1264 B 1.5 D)
24 1 Kyle Weaver (unr. b 1.5 D) 0 Mason Tobias (1135 b 1.5 d)
25 0 Kate Canessa ( 560 - 1.0 D) 1 Albert Martin Starr (1500 B 1.0 )
26 1 X Paul Blum (1034 w 1.0 D) 0 F Branum Spliethof (unr. B 1.0 )
27 0 Alexander Kojevnikov (1110 W 0.5 ) 1 Andrew Burkett Rosston (1118 b 0.5 D)
  ½ Robert Turner (1341 b 1.5 d)   BYE
  ½ Andrew Braithwaite (1392 WW 2.5 )   BYE
  ½ Richard Hack (1504 b 2.5 D)   BYE
  ½ Tristan Saucedo ( 947 B 1.0 )   BYE
  ½ Renate Otterbach (1116 B 1.0 )   BYE
  ½ Dominic A Vazquez (1388 W 1.0 )   BYE
  ½ Sebastian Chodakowski (unr. B 0.5 )   BYE
  ½ Shaikat Hossain (1141 w 0.0 )   BYE

 

Pairings for Round 4. 2025 Winter Tuesday Night Marathon: Extra Rated

Bd Res White Res Black
29 0 Steven Lee Myers (1130 - 0.0 ) 1 Daniel J Sisti (1579 - 0.0 )
30 ½ John Chan (1538 - 0.0 ) ½ Samuel Agdamag (1514 - 0.0 )
31 1 Danny Du Uy Cao (1159 - 0.0 ) 0 Paul Blum (1034 W 0.0 )