Archived Tournament

2026 Summer Celebration Blitz

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Top 6 boards are broadcasted on Chess.com: 


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Info

  • Date: Tue, Jun 23 , 2026
  • Eligibility: Open to Everyone!
  • Rating: USCF & FIDE
  • Location: Mechanics' Institute, 4th Floor, 57 Post Street, San Francisco, CA 94104
  • Capacity: 80

Registration

  • Online Registration Open Until: Tuesday, June 23: 6:00 pm
  • Onsite Registration: 6:00-6:15pm
  • Entry fee for Mechanics' Institute Members: $25
    • Play-up fee: $10
  • Entry fee for Non-Members: $30
    • Play-up fee: $15
  • Late fee: $10
  • $5 admin fee for all cancellations & refunds.
  • Two ways to check your entries:
    • Check the live entries on the Jumbula page.
    • Check the processed entries here a day before the event.
  • Please note our late fee may be in effect and is usually added 24 hours before the start of a tournament in case capacity reaches 90%.

Tournament Format

  • Tournament Format: Swiss System
  • Total Rounds: 7
  • Time control: 3 min basetime + 2 sec increment
  • Round Times: 6/23 6:30pm and remaining rounds are on a rolling schedule
  • Sections: 1800+ u1800

Play-up "200-rating point rule":

  • Players must have an 1600 USCF regular supplemental or actual regular rating to be eligible to play up to the 1800+ 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 June 2026 regular supplemental regular US Chess rating.

 

Prize Fund

  • 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:

    • $400 based on 40 paid entries
    • Actual Payout: $460 based on 46 paid entries - 115% payout.
  1800+ u1800
  Projected Actual Projected Actual
1st Place $125 $144 $75 $86
2nd Place $75 $86 $50 $58
3rd Place $50 $58 $25 $29

Prizes: Summer Celebration Blitz 2026

# Name Place Cash Prize credited to pool Section
2 Daniel Cremisi (6.5/2350) 1st 144.00 1st Place: $144 1800+
3 Sebastian Suarez (6.0/2327) 2nd 86.00 2nd Place: $86
1 GM Mark Heimann (5.5/2547) 3rd 58.00 3rd Place: $58
5 Rithvik Prakki Prakki (7.0/1618) 1st 86.00 1st Place: $86 U1800
2 Kar Lun Cheng (5.0/1764) 2nd 17.40 (5-way)

2nd Place: $58;
3rd Place: $29;
5-way split of $87: $17.40 each

3 Ritwik Saha (5.0/1630) 2T 17.40 (5-way)
4 David Siegel (5.0/1627) 2T 17.40 (5-way)
9 Thu Anh Le (5.0/1474) 2T 17.40 (5-way)
17 Ethan C Leung (5.0/1236) 2T 17.40 (5-way)

 

Byes

  • Byes are available for players in any round in case they can't participate but would like to stay in the tournament.
  • Byes can be requested up to 15 minutes prior to the round start time.
  • Last round bye must be requested by the start of Round 1.
  • Late registrations will receive a 0.5 bye for any missed round, up to a total of 2 rounds.

Eligibility

Tournament Rules

  • Forfeit time: 3 minutes. 
  • We provide clocks and set it up for players.
  • Games will be US Chess and FIDE blitz rated. Modified FIDE rules apply.
     
  • What do the time controls mean?
    Time controls tell you how much time you have for each game.
    G/3+2 means game in 3 minutes with a 2-second increment with each move. This means you get 3 minutes, your opponent gets 3 minutes, and with each move players get 2 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.

Standings

SwissSys 11.80.2 - Standings. Summer Celebration Blitz 2026: 1800+

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total Prize
1 Daniel Cremisi 14543654 2350 W18 W10 W2 D3 W7 W11 W5 6.5 144.00
2 Sebastian Suarez 16875347 2327 W13 W7 L1 W17 W5 W3 W9 6.0 86.00
3 GM Mark Heimann 12802899 2547 W9 W6 W5 D1 W4 L2 W10 5.5 58.00
4 Dmitry Vayntrub 12911242 2221 W16 W20 L11 W10 L3 W8 W12 5.0  
5 Aadit Bhatia 16689603 2279 W14 W8 L3 W11 L2 W7 L1 4.0  
6 Sounak Bagchi 15744984 2201 W19 L3 W8 W12 L11 L9 W15 4.0  
7 CM Pranav Senthilkumar 14020007 2184 W23 L2 W18 W14 L1 L5 W17 4.0  
8 Arthur Ismakov 12654576 2139 W21 L5 L6 W16 W17 L4 W11 4.0  
9 Jeremy David Cawthon 15038608 2119 L3 W19 L10 W22 W15 W6 L2 4.0  
10 Rohan Das 15263634 2188 W22 L1 W9 L4 W18 D12 L3 3.5  
11 FM Tanuj Vasudeva 13516867 2183 H--- W12 W4 L5 W6 L1 L8 3.5  
12 Keith Esses 10352240 2149 W17 L11 W20 L6 W19 D10 L4 3.5  
13 Stephen Parsons 16566932 1968 L2 W23 L14 L19 D20 B--- W18 3.5  
14 Phineas F Horowitz 14209057 1951 L5 D21 W13 L7 L16 W20 W19 3.5  
15 Chawit Asavasaetakul 30241114 2172 F20 W16 L17 W20 L9 W23 L6 3.0  
16 Yali Dancig Perlman 16280288 1905 L4 L15 W23 L8 W14 L17 B--- 3.0  
17 Avik Saha 17251957 1831 L12 B--- W15 L2 L8 W16 L7 3.0  
18 Hugo Osmar Santiago 14842497 2019 L1 W22 L7 W21 L10 D19 L13 2.5  
19 Frederic Dutter 12343420 1900 L6 L9 W21 W13 L12 D18 L14 2.5  
20 Christopher Powers 30462548 1832 X15 L4 L12 L15 D13 L14 W22 2.5  
21 David Vayntrub 15326038 1815 L8 D14 L19 L18 B--- L22 W23 2.5  
22 Cailen Jeremiah Melville 14006141 1871 L10 L18 B--- L9 L23 W21 L20 2.0  
23 Daniel Sevall 12811060 1841 L7 L13 L16 B--- W22 L15 L21 2.0  

SwissSys 11.80.2 - Standings. Summer Celebration Blitz 2026: U1800

# Name ID Rating Rd 1 Rd 2 Rd 3 Rd 4 Rd 5 Rd 6 Rd 7 Total Prize
1 Rithvik Prakki Prakki 15271723 1618 W24 W19 W21 W6 W11 W4 W2 7.0 86.00
2 Kar Lun Cheng 30599116 1764 L10 W14 W20 W7 W17 W11 L1 5.0 17.40
3 Ritwik Saha 30418328 1630 L6 W24 L13 W25 W8 W21 W10 5.0 17.40
4 David Siegel 12595160 1627 W16 W10 L11 W5 W13 L1 W14 5.0 17.40
5 Thu Anh Le 17248797 1474 W26 D13 W18 L4 D9 W6 W11 5.0 17.40
6 Ethan C Leung 32541981 1236 W3 W7 W17 L1 W10 L5 W9 5.0 17.40
7 Aaron Cheng 30774877 1533 W25 L6 W23 L2 L21 W26 W19 4.0  
8 Ioannis Dimotsis 33173629 1500 W27 L11 L10 W12 L3 W20 W17 4.0  
9 Asher Lieberman 17103273 1380 D14 L21 W27 W16 D5 W12 L6 4.0  
10 Ethan Lam 30150899 1273 W2 L4 W8 W19 L6 W17 L3 4.0  
11 Shane Davis 32212404 1095 W18 W8 W4 W13 L1 L2 L5 4.0  
12 Rodrigo Vicente Arevalo Rivas 33174147 unr. F23 B--- W24 L8 W25 L9 W18 4.0  
13 Aaron Ingber 32151075 unr. W20 D5 W3 L11 L4 D19 W21 4.0  
14 Christopher Edward Carl Vandiver 33173469 unr. D9 L2 D19 W23 W15 W18 L4 4.0  
15 Yiran Mao 33173641 1450 L21 W22 D16 L20 L14 W24 W25 3.5  
16 Dylan Asher Skurow 32467183 1179 L4 W26 D15 L9 L19 W23 W24 3.5  
17 Pavel Kolesnikov 30194161 1783 W28 W23 L6 W21 L2 L10 L8 3.0  
18 Nick Casares 10424364 1600 L11 W27 L5 W26 W20 L14 L12 3.0  
19 Neel Gore 30176757 1428 W22 L1 D14 L10 W16 D13 L7 3.0  
20 Fadi Arodaki 31279904 1410 L13 W25 L2 W15 L18 L8 B--- 3.0  
21 Alex Yuen 32595736 113 W15 W9 L1 L17 W7 L3 L13 3.0  
22 Christian Groen 33100744 unr. L19 L15 L25 B--- L24 W27 W26 3.0  
23 Samuel Agdamag 14874734 1437 X12 L17 L7 L14 L26 L16 W27 2.0  
24 Philip Ranjan 33147377 1150 L1 L3 L12 W27 W22 L15 L16 2.0  
25 Shivaansh Girish 32467199 929 L7 L20 W22 L3 L12 B--- L15 2.0  
26 Braxton Wardle 31661706 711 L5 L16 B--- L18 W23 L7 L22 2.0  
27 Andrew Ranjan 33147402 750 L8 L18 L9 L24 B--- L22 L23 1.0  
28 Alexander Robins 31932004 1305 L17 U--- U--- U--- U--- U--- U--- 0.0  

 

 

Pairings

Pairings are posted on the wall of the club. We do not post pairings online for 1-day events.