CChessStats

2025 Summer Tuesday Night Marathon - 1600-1999 Round 4-7

Open SwissStandard

31 players participated in this 4-round tournament, held from 29 Jul 2025 to 19 Aug 2025 in San Francisco, CA, United States. 2 federations represented. Top 10 Elo average was 1798, and top seed was Mikhail A Chernobilskiy (🇺🇸 USA, 1936).

Mikhail A Chernobilskiy (🇺🇸 USA, 1936) won with 3.5/4, ahead of Carl A Pickering (3.0) and David Siegel (2.5). Chernobilskiy won solo starting round 3.

The biggest upset came in round 2: Daniel J Sisti (1536) beat David Siegel (1700), a +164-point gap.

Location
🇺🇸San Francisco, CA, United States
Dates
29 Jul 2025 → 19 Aug 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 4 rounds
Top seed
🇺🇸Mikhail A Chernobilskiy1936
Avg top 10
1,798
Participants
31
Federations · 2 represented
🇺🇸United States of America×30
🇬🇧England×1
Top 3

How it unfolded

Top 6 · 4 rounds

Mikhail A Chernobilskiy led from R3; +0.5-point edge over the runner-up.

Co-leaders
9
4
1
1
1234R1R2R3R4
R3–R4 · LEAD HELD

Mikhail A Chernobilskiy held the sole lead from R3 through R4 without losing it.

R1–R3 · WIN STREAK

Mikhail A Chernobilskiy won 3 in a row (R1–R3).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Mikhail A Chernobilskiy*——
1
2Carl A Pickering—*——
3David Siegel——*—
4Hoa Long Tam
0
——*

Grille américaine

#PlayerEloFedR1R2R3R4PtsBu C1BuSBPerfΔ
1Chernobilskiy, Mikhail A1936USA+19B+20N+4B=13B3.54.55.54.752481+11.6
2Pickering, Carl A1733ENG+29N−10N+28B+19N3.03.03.01.001807+14.8
3Siegel, David1700USA=21B−24N+22B+5N2.54.05.03.501757+5.6
4Tam, Hoa Long1683USA+31B+16N−1NF2.07.07.01.501910+17.8
5Stults, Sawyer1724USA+7N−6B+26N−3B2.06.57.53.001742+2.0
6Kalonaris, Zeno1759USA+8B+5N−15BF2.06.07.54.001834+5.8
7Mays-Smith, Isaac S1868USA−5B+19N+8B−20N2.05.06.03.001677-39.2
8Yan, Rayna1623USA−6N+23B−7N+28N2.05.05.01.001681+12.0
9Perlov, Daniel1749USA−14N+17B=18N=15B2.04.56.03.001712-2.8
10Morello, Nicholas1755USAF+2B+20BF2.04.04.04.002547+19.4
11Santiago, Hugo Osmar0USAF+27B+13NF2.04.04.02.5018390.0
12Touset, Stephen1741USA+22B+21N−25BF2.03.03.02.001832+7.4
13Jones, Clarence0USAF+14B−11B=1N1.57.59.03.2517870.0
14Liu, Serena1601USA+9B−13N=17NF1.55.05.02.751946+36.4
15Horgan, Michael G1785USAFF+6N=9N1.54.04.03.001947+16.8
16Wang, Chase1657USAF−4B=21N+22B1.54.04.01.501689+2.5
17Admassu, Yonathan1756USAF−9N=14B+30N1.53.53.50.751676-6.4
18Sevall, Daniel0USAFF=9B+25N1.53.03.02.001935-7.2
19Agdamag, Samuel1605USA−1N−7B+23N−2B1.08.59.51.001595-2.4
20Babayan, Gagik1757USAF−1B−10N+7B1.07.57.52.001729-2.4
21Liu, Jinfeng1598USA=3N−12B=16BF1.06.06.02.001579-2.0
22Latourette, Nicholas1795USA−12N+28B−3N−16N1.06.06.00.001456-69.2
23Chan, John1607USA+28N−8N−19B−26B1.04.04.00.001394-22.2
24Sisti, Daniel J1536USAF+3BFF1.03.53.52.502504+28.8
25Schaezlein, Charlie1718USAFF+12N−18B1.03.53.52.002541+10.2
26Horde, Nicolas T1634USAFF−5B+23N1.03.03.01.001666+1.6
27Argo, Guy1819USA+30B−11NFF1.03.03.00.002483+6.4
28Casares, Nick1487USA−23B−22N−2N−8B0.06.07.00.00890-19.6
29Ni, Tao1610USA−2BFFF0.03.03.00.00936-6.6
30Ploquin, Phil1683USA−27NFF−17B0.02.52.50.00988-14.4
31Dutter, Frederic1751USA−4NFFF0.02.02.00.00881-12.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets
2025 Summer Tuesday Night Marathon - 1600-1999 Round 4-7 — San Francisco, CA, United States | Chess Tournament Results | ChessStats