2025 NY Marshall Summer Six Day - IM C
10 players participated in this 9-round tournament, held from 08 Jul 2025 to 13 Jul 2025 in New York, NY, United States. 7 titled players from 5 federations. Top 10 Elo average was 2283, and top seed was Oleksii Bilych (🇺🇦 UKR, IM, 2446).
Ethan Guo (🇺🇸 USA, FM, 2193) won with 6.5/9, ahead of Karen Movsziszian (5.5) and Julian Colville (5.0). Guo shared the lead from round 4 and won solo starting round 5.
The biggest upset came in round 4: Ethan Guo (FM, 2193) beat Oleksii Bilych (IM, 2446), a +253-point gap.
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How it unfolded
Top 10 · 9 roundsFM Ethan Guo led from R5 onwards, the runner-up race stayed tight. Title race converged from 2 co-leaders at R4 to 1 by R5.
FM Ethan Guo takes the sole lead (4.0/5).
FM Ethan Guo drew with GM Karen Movsziszian (Black).
FM Ethan Guo won 4 in a row (R3–R6).
Cross-table
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 🇺🇸FMGuo, Ethan | 2193 | * | ½ | ½ | 1 | ½ | 1 | ½ | 1 | 1 | ½ | 6.5 | 27.25 | 38.5 | +63.8 | 2459 |
| 2 | 🇦🇲GMMovsziszian, Karen | 2380 | ½ | * | ½ | ½ | ½ | ½ | ½ | 1 | 1 | ½ | 5.5 | 23.00 | 39.5 | -2.8 | 2352 |
| 3 | 🇺🇸IMColville, Julian | 2248 | ½ | ½ | * | 1 | ½ | 0 | 1 | ½ | 0 | 1 | 5.0 | 22.50 | 40.0 | +38.8 | 2330 |
| 4 | 🇺🇦IMBilych, Oleksii | 2446 | 0 | ½ | 0 | * | ½ | 1 | ½ | 1 | ½ | 1 | 5.0 | 19.75 | 40.0 | -15.9 | 2308 |
| 7 | 🇮🇱GMYudasin, Leonid | 2290 | ½ | ½ | ½ | ½ | * | ½ | ½ | ½ | ½ | ½ | 4.5 | 20.25 | 40.5 | -1.0 | 2282 |
| 6 | 🇺🇸Moor, Nathaniel Philip | 2261 | 0 | ½ | 1 | 0 | ½ | * | 1 | ½ | 0 | 1 | 4.5 | 19.25 | 40.5 | +5.3 | 2286 |
| 5 | 🇮🇸IMHeimisson, Hilmir Freyr | 2342 | ½ | ½ | 0 | ½ | ½ | 0 | * | 1 | 1 | ½ | 4.5 | 18.75 | 40.5 | -7.9 | 2277 |
| 8 | 🇺🇸Wongso, Steve | 2154 | 0 | 0 | ½ | 0 | ½ | ½ | 0 | * | 1 | 1 | 3.5 | 13.00 | 41.5 | +27.2 | 2218 |
| 9 | 🇺🇸Mottola, Max | 2247 | 0 | 0 | 1 | ½ | ½ | 1 | 0 | 0 | * | 0 | 3.0 | 14.25 | 42.0 | -25.8 | 2162 |
| 10 | 🇺🇸FMAtwell, Rose | 2271 | ½ | ½ | 0 | 0 | ½ | 0 | ½ | 0 | 1 | * | 3.0 | 13.50 | 42.0 | -25.3 | 2160 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Guo, EthanFMUSA+63.86.5 pts · #1
- 2Colville, JulianIMUSA+38.85.0 pts · #3
- 3Wongso, SteveUSA+27.23.5 pts · #8
- 1Mottola, MaxUSA-25.83.0 pts · #9
- 2Atwell, RoseFMUSA-25.33.0 pts · #10
- 3Bilych, OleksiiIMUKR-15.95.0 pts · #4
- R4+253 Elo gap
- R3+198 Elo gap
- R2+117 Elo gap