2025 Spring Tuesday Night Marathon | Mechanics' Institute

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2025 Spring Tuesday Night Marathon

Tuesday, March 4, 2025 to Tuesday, April 15, 2025

2025 Spring Tuesday Night Marathon
Mar - Apr 2025

US Chess & FIDE-rated event
 

Final Standings -- Prize Winners -- Complete list of games (pdf&pgn)

Dates -- Tournament Format -- Byes -- Prize Fund

Registration -- Eligibility -- Tournament Rules -- FAQ
 

Max capacity: 80
 

The top 6 boards are broadcasted on Chess.com with a 15-minute delay.
https://www.chess.com/events/2025-mechanics-institute-tuesday-night-marathon-spring/games

 

Pre-TNM Lectures are back! Arrive at 5:45 pm and listen to a guest speaker covering some exciting news from the chess world and interesting games from our tournaments! Please see our current lecture schedule below.

Any change/update request? Please use our Change Request Form.
 

1. Dates & Location

  • Seven Tuesdays in Mar - Apr 2025: 3/4, 3/11, 3/18, 3/25, 4/1, 4/8, 4/15
  • Location: Mechanics' Institute Chess Room
    57 Post Street, 4th Floor, San Francisco, CA 94104 (click here to map)
     

2. Tournament Format:

  • Tournament Format: individual Swiss
  • Total Rounds: 7 (1 round each Tuesday night: 1/7, 1/14, 1/21, 1/28, 2/4, 2/11, 2/18)
  • Round Times: Tuesday at 6:30 pm Pacific Time (GMT+8)
  • Time Control: G/90;+30  (Game in 90 minutes with 30-second increment on each move.)
  • The games will be US Chess regular-rated and FIDE-rated. The tournament results will be submitted immediately after the last round is finished.
  • Three Sections: 2000+, 1600-1999, and under1600
  • Pairings are based on the Mar 2025 regular supplemental regular US Chess rating.
  • Play-up "200-rating point rule":
    Players must have a 1800 USCF regular supplemental or actual regular rating in order 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 will only be used if no US Chess rating is available. 

3. 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 1-6 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 a total of three rounds.
     

4. Prize Fund --  $2400 based on 80 paid entries   -- distribution coming soon!

  2000+ 1600-1999 u1600
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
  • Please allow 2-3 weeks for processing prize checks.
  • Per IRS rules, anyone with a cumulative $600+ prize in any calendar year must file a W9, and the Mechanics' Institute will provide a 1099 form. 
     

5. Registration

6. Eligibility

7. Tournament Rules

  • Modified FIDE rules apply.
  • Forfeit time is 30 minutes without prior notice and 60 minutes if we are notified.
    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.

8. FAQ

  • What do the time controls mean?
    Time controls tell you how much time you have for each game.
    G90;+30 means a game in 90 minutes (aka 1.5 hours) with a 30-second increment on each move. This means you get 90 minutes, your opponent gets 90 minutes, and after each move, the clock adds 30 seconds to the player's remaining time.
     
  • How many games/rounds?
    The 7SS before the time control means it is a Swiss System tournament with seven rounds, or seven games, that a player can play in the tournament. The tournaments are never an elimination, so win or lose, you can stay in the tournament.


​

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.

 

Prize Winners: 

 

PRIZE FUND
Tournament Name:  2025 Spring Tuesday Night Marathon
  Date:  March - April, 2025    
             
Pay out % $2,400 100% based on 80 paid entries  
Actual Payout $2,070 86% 69 paid entries  
             
  2000+ 1600-1999 u1600
  Projected Actual Projected Actual Projected Actual
1st Place $500 $431 $300 $259 $200 $173
2nd Place $300 $259 $200 $173 $100 $86
3rd Place $200 $173 $100 $86 $50 $43
Best u2200 $100 $86        
Best u2000 $100 $86        
Best u1800     $75 $65    
Best u1600     $75 $65    
Best u1400         $50 $43
Best u1200         $50 $43

 

Prizes: 2025 Spring Tuesday Night Marathon

# Name Cash Prize credited to pool Section
1 Daniel Cremisi (5.5/2388) 345.00 1st Place: $431;
2nd Place: $259;
2-way split of $690: $345 each		 2000+
6 WFM Natalya Tsodikova (5.5/2169) 345.00
3 Dmytro Dzhanhirov (5.0/2235) 173.00 3rd Place: $173
8 Sivavishnu Srinivasan (4.5/2066) 43.00 Top u2200: $86;
2-way split: $43 each
7 CM Chinguun Bayaraa (4.5/2161) 43.00
19 Hector Viadiu-Ilarraza (4.0/1896) 28.66 Top u2000: $86;
3-way split: $28.66 each
11 Reyansh Paragiri (4.0/1978) 28.66
16 Michael Walder (4.0/1935) 28.66
1 Jeremy David Cawthon (7.0/1970) 259.00 1st Place: $259 1600-1999
21 Immanuel Huang (5.5/1554) 173.00 2nd Place: $173
8 Gagik Babayan (5.0/1711) 86.00 3rd Place: $86
18 Sreyshthaa Krishnan (4.5/1579) 65.00 Top u1800: $65
22 John Chan (4.0/1520) 32.50 Top u1600: $65;
2-way split: $32.50 each
16 John Boyer (4.0/1598) 32.50
9 Joseph Karwat (6.0/1315) 173.00 1st Place: $173 u1600
2 Bilguun Bayaraa (5.5/1503) 86.00 2nd Place: $86
8 Dahlia Quinn (5.0/1317) 43.00 Top u1400: $43;
3rd Place: $43;
2-way split of $86: $43 each
3 Romeo Belmes Barreyro (5.0/1500) 43.00
30 Bowie Chen (3.5/0) 10.75 Top u1200: $43;
4-way split: $10.75 each
20 Daniel Smith (3.5/1126) 10.75
22 Andrew Singer (3.5/1044) 10.75
25 Yinpok R Lee (3.5/935) 10.75
Standings: 

Final Standings   

 

SwissSys Report: 2025 Spring Tuesday Night Marathon

SwissSys Standings. 2025 Spring Tuesday Night Marathon: 2000+

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total Prize
1 Daniel Cremisi 14543654 2388 W8 W18 L3 W5 W10 D2 W7 5.5 345.00
2 WFM Natalya Tsodikova 12634942 2169 H--- W12 H--- W14 W3 D1 W4 5.5 345.00
3 Dmytro Dzhanhirov 32073210 2235 W9 W19 W1 W4 L2 D7 D5 5.0 173.00
4 Jimmy Heiserman 12799690 2303 W17 W11 W14 L3 D5 W13 L2 4.5  
5 CM Chinguun Bayaraa 14271324 2161 D12 W20 W7 L1 D4 W9 D3 4.5 43.00
6 Sivavishnu Srinivasan 16778004 2066 L18 W9 L10 D8 W22 W17 W11 4.5 43.00
7 CM Pranav Senthilkumar 14020007 2201 H--- W16 L5 W20 W18 D3 L1 4.0  
8 Reyansh Paragiri 30233070 1978 L1 W22 L13 D6 W20 W18 D14 4.0 28.67
9 Michael Walder 10345120 1935 L3 L6 W23 W16 W19 L5 W20 4.0 28.67
10 Hector Viadiu-Ilarraza 12586903 1896 L15 B--- W6 W13 L1 D11 H--- 4.0 28.67
11 Sudarshan Seshadri 12906250 2018 W23 L4 L18 W15 W17 D10 L6 3.5  
12 Kristian Clemens 13901075 1954 D5 L2 W22 D19 H--- H--- H--- 3.5  
13 Adam Mercado 16571026 1949 H--- H--- W8 L10 W14 L4 D16 3.5  
14 Anthony Vladimir Ivanenko 30902660 1901 W21 W15 L4 L2 L13 X23 D8 3.5  
15 IM Elliott Winslow 10363365 2222 W10 L14 L17 L11 H--- H--- W22 3.0  
16 ANDREW ZAVGORODNIY 32143889 1969 D22 L7 L20 L9 W23 X19 D13 3.0  
17 Steven Gaffagan 12542809 1967 L4 W23 W15 D18 L11 L6 U--- 2.5  
18 Varun Agrawal 30082646 1933 W6 L1 W11 D17 L7 L8 U--- 2.5  
19 Phineas F Horowitz 14209057 1883 B--- L3 H--- D12 L9 F16 U--- 2.0  
20 Kar Lun Cheng 30599116 1867 H--- L5 W16 L7 L8 D22 L9 2.0  
21 Kyle Chan 30063365 2042 L14 H--- H--- H--- U--- U--- U--- 1.5  
22 Roger Christopher Smith 14437543 1872 D16 L8 L12 L23 L6 D20 L15 1.0  
23 Raghu Rajaram 12698822 1812 L11 L17 L9 W22 L16 F14 U--- 1.0  

SwissSys Standings. 2025 Spring Tuesday Night Marathon: 1600-1999

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total Prize
1 Jeremy David Cawthon 15038608 1970 W8 W4 W13 W2 W10 X15 W5 7.0 259.00
2 Immanuel Huang 31924932 1554 W10 W24 W7 L1 W6 W4 H--- 5.5 173.00
3 Gagik Babayan 15695454 1711 L19 W17 L4 W23 W18 W9 W8 5.0 86.00
4 Sreyshthaa Krishnan 30452740 1579 W27 L1 W3 X12 X15 L2 D13 4.5 65.00
5 Frederic Dutter 12343420 1900 D9 W23 D6 W8 H--- H--- L1 4.0  
6 Phil Ploquin 12535882 1665 H--- W14 D5 H--- L2 D13 W20 4.0  
7 Rayna Yan 30157975 1642 W22 W19 L2 L10 D20 D14 W16 4.0  
8 John Boyer 16865157 1598 L1 W27 X24 L5 W11 W10 L3 4.0 32.50
9 John Chan 12561007 1520 D5 L10 W21 D18 W16 L3 W17 4.0 32.50
10 Stephen Parsons 16566932 1876 L2 W9 W25 W7 L1 L8 D12 3.5  
11 Christopher Powers 30462548 1818 L13 H--- D20 X26 L8 H--- W25 3.5  
12 Nicholas Morello 31114079 1655 H--- D15 W19 F4 H--- D20 D10 3.5  
13 Isaac S Mays-Smith 30338290 1619 W11 W20 L1 L15 D19 D6 D4 3.5  
14 David Siegel 12595160 1446 H--- L6 L23 X27 W21 D7 D19 3.5  
15 Hayes Alexander Marvin 30636603 1926 D16 D12 W18 W13 F4 F1 U--- 3.0  
16 Carl Anthony Pickering 30689170 1634 D15 H--- H--- H--- L9 W19 L7 3.0  
17 Hoa Long Tam 16919862 1589 L20 L3 W27 L21 W25 W22 L9 3.0  
18 Michael David Abraham 12776147 1558 H--- W21 L15 D9 L3 X23 U--- 3.0  
19 Charlie Schaezlein 31629140 1473 W3 L7 L12 W25 D13 L16 D14 3.0  
20 Sawyer Stults 31608516 1424 W17 L13 D11 H--- D7 D12 L6 3.0  
21 Stephen Touset 14197801 1600 H--- L18 L9 W17 L14 W25 L22 2.5  
22 Clarence Harris 12543396 1400 L7 L25 L26 H--- B--- L17 W21 2.5  
23 Nicolas T Horde 30573134 1568 H--- L5 W14 L3 H--- F18 U--- 2.0  
24 Richard V Finacom 11452728 1884 W25 L2 F8 U--- U--- U--- U--- 1.0  
25 Nick, Jr Casares 10424364 1600 L24 W22 L10 L19 L17 L21 L11 1.0  
26 Owen Michael Lopez-Oneal 31909069 618 U--- U--- W22 F11 U--- U--- U--- 1.0  
27 Yonathan Admassu 15323127 1721 L4 L8 L17 F14 U--- U--- U--- 0.0  

SwissSys Standings. 2025 Spring Tuesday Night Marathon: Under1600

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total Prize
1 Joseph Karwat 16761266 1315 W20 W2 W3 W5 W15 L4 W6 6.0 173.00
2 Bilguun Bayaraa 15191886 1503 W23 L1 W16 W11 W3 W8 D7 5.5 86.00
3 Romeo Belmes Barreyro 17018168 1500 W9 W7 L1 W25 L2 W17 W15 5.0 43.00
4 Dahlia Quinn 30654447 1317 W25 W21 D11 H--- H--- W1 H--- 5.0 43.00
5 Brett Fisher 31540384 1376 W24 W10 D8 L1 H--- H--- W13 4.5  
6 William Fitzgerald 17048414 1311 L19 D30 W18 W20 W16 W15 L1 4.5  
7 Brandon Zhao 30108201 1280 W28 L3 W24 W26 L8 W12 D2 4.5  
8 Zachary Wickliffe 32140128 1260 W27 W17 D5 L15 W7 L2 W11 4.5  
9 Felix Elias Merk 16761910 1304 L3 H--- L26 D18 W28 W16 W20 4.0  
10 Dominic A Vazquez 30703139 1206 W26 L5 L25 H--- H--- W21 W17 4.0  
11 Thu Anh Le 17248797 1204 H--- W14 D4 L2 W26 H--- L8 3.5  
12 Robert Turner 12407483 1200 H--- L15 H--- W30 W21 L7 H--- 3.5  
13 Daniel Smith 31779836 1126 L17 L26 W23 H--- W30 W20 L5 3.5 10.75
14 Andrew Singer 30803745 1044 H--- L11 H--- W28 L17 D18 W25 3.5 10.75
15 Yinpok R Lee 32231030 935 H--- W12 W19 W8 L1 L6 L3 3.5 10.75
16 Bowie Chen 32358809 unr. H--- W18 L2 W22 L6 L9 W23 3.5 10.75
17 Richard Hack 12796129 1500 W13 L8 H--- H--- W14 L3 L10 3.0  
18 Danny Du Uy Cao 16939797 1174 H--- L16 L6 D9 W22 D14 D19 3.0  
19 Andrew Braithwaite 31237898 1126 W6 H--- L15 H--- U--- H--- D18 3.0  
20 Alexander Kojevnikov 31856555 1045 L1 W28 W21 L6 W25 L13 L9 3.0  
21 Andrew Marsh 32324470 unr. B--- L4 L20 W24 L12 L10 W27 3.0  
22 David R Olson 13913131 1400 W30 L29 H--- L16 L18 L23 W31 2.5  
23 Steven Lee Myers 30700928 1196 L2 L25 L13 W27 H--- W22 L16 2.5  
24 John Pirone 30758788 1026 L5 W27 L7 L21 H--- H--- H--- 2.5  
25 Douglas Alan Burkhardt 31265165 739 L4 W23 W10 L3 L20 H--- L14 2.5  
26 Sacha Marino Sloan 32301287 660 L10 W13 W9 L7 L11 H--- U--- 2.5  
27 Albert Martin Starr 12844781 1518 L8 L24 L30 L23 B--- W28 L21 2.0  
28 Owen Michael Lopez-Oneal 31909069 618 L7 L20 B--- L14 L9 L27 X30 2.0  
29 Samuel Agdamag 14874734 1481 H--- W22 U--- U--- U--- U--- U--- 1.5  
30 Paul Blum 12748433 1016 L22 D6 W27 L12 L13 L31 F28 1.5  
31 Steven Alan Dunlap 14905812 913 U--- U--- U--- U--- U--- W30 L22 1.0  

SwissSys Standings. 2025 Spring Tuesday Night Marathon: Extra Games

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Total Prize
1 Thejas Prasad 12890181 1692 D5 U--- W8 U--- 1.5  
2 Sreyshthaa Krishnan 30452740 1579 U--- D6 W10 U--- 1.5  
3 ANDREW ZAVGORODNIY 32143889 1969 U--- U--- U--- W7 1.0  
4 Samuel Agdamag 14874734 1481 U--- U--- W9 U--- 1.0  
5 Phineas F Horowitz 14209057 1883 D1 U--- U--- U--- 0.5  
6 Christopher Powers 30462548 1818 U--- D2 U--- U--- 0.5  
7 Anthony Vladimir Ivanenko 30902660 1901 U--- U--- U--- L3 0.0  
8 Albert Martin Starr 12844781 1518 U--- U--- L1 U--- 0.0  
9 Clarence Harris 12543396 1400 U--- U--- L4 U--- 0.0  
10 CHRISTIAN BRICKHOUSE 30261226 1270 U--- U--- L2 U--- 0.0  
 
Pairings: 

 

 
Location: 
Mechanics' Institute