2025 Central States Master Challenge
Open SwissStandard
7 players participated in this 5-round tournament, held from 31 Oct 2025 to 02 Nov 2025 in Brookfield, WI, United States. Top 10 Elo average was 776, and top seed was Lawrence Cohen (🇺🇸 USA, 1878).
The biggest upset came in round 4: Mark Engelen (1732) beat Dean Arond (1854), a +122-point gap.
Location
🇺🇸Brookfield, WI, United States
Dates
31 Oct 2025 → 02 Nov 2025
Time control
Standard: 100 minutes for game with 30 seconds increment from move 1
System
Swiss · 5 rounds
Avg top 10
776
Participants
7
Federations · 1 represented
🇺🇸United States of America×3
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 5 roundsFIDE 39999912 led from R2; +1.5-point edge over the runner-up.
Co-leaders
2
1
1
1
1
R2–R5 · LEAD HELD
FIDE 39999912 never relinquished the lead after R2; final gap +1.5 over the runner-up.
R4 · HEAD-TO-HEAD · WINNER VS 2ND
FIDE 39999912 lost to Gabriel Panner (Black).
R1–R3 · WIN STREAK
FIDE 39999912 won 3 in a row (R1–R3).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1FIDE 39999912 | * | 0 | — | — |
| 2Gabriel Panner | 1 | * | — | ½ |
| 3Dean Arond | — | — | * | — |
| 4FIDE 2049767 | — | ½ | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | FIDE 39999912 | 0 | — | +7B | +7N | +4N | −2N | +5B | 4.0 | 5.5 | 5.5 | 3.00 | 1789 | 0.0 |
| 2 | Panner, Gabriel | 1845 | USA | F | F | =6B | +1B | +4B | 2.5 | 7.0 | 7.0 | 6.25 | 2532 | +14.0 |
| 3 | Arond, Dean | 1854 | USA | F | F | +5B | −4N | +7N | 2.0 | 3.0 | 3.0 | 1.50 | 932 | -13.4 |
| 4 | Engelen, Mark | 1732 | USA | F | =5N | −1B | +3B | −2N | 1.5 | 10.0 | 10.0 | 2.75 | 1850 | +6.4 |
| 5 | FIDE 39999904 | 0 | — | F | =4B | −3N | +7B | −1N | 1.5 | 7.5 | 7.5 | 0.75 | 1600 | 0.0 |
| 6 | FIDE 2049767 | 0 | — | +?B | F | =2N | F | F | 1.5 | 2.5 | 2.5 | 1.25 | 1882 | 0.0 |
| 7 | FIDE 39999890 | 0 | — | −1N | −1B | F | −5N | −3B | 0.0 | 11.5 | 11.5 | 0.00 | 1054 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Panner, GabrielUSA+14.02.5 pts · #4
- 2Engelen, MarkUSA+6.41.5 pts · #2
- 3FIDE 20497670.01.5 pts · #1
Top rating losers
- 1Arond, DeanUSA-13.42.0 pts · #7
- 2FIDE 20497670.01.5 pts · #1
- 3FIDE 399998900.00.0 pts · #6
Biggest upsets
- R4+122 Elo gap