Salongernas Chess Challenge 2025
18 players participated in this 9-round tournament, held from 28 May 2025 to 01 Jun 2025 in Stockholm, Sweden. 2 titled players from 3 federations. Top 10 Elo average was 1993, and top seed was Jonathan Westerberg (🇸🇪 SWE, GM, 2478).
Jonathan Westerberg (🇸🇪 SWE, GM, 2478) won with 8.0/9, ahead of Lukas Willstedt (6.5) and Sebastian Shi (6.0). Westerberg won solo starting round 3.
The biggest upset came in round 5: Lukas Willstedt (2057) beat Jonathan Westerberg (GM, 2478), a +421-point gap.
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How it unfolded
Top 6 · 9 roundsGM Jonathan Westerberg led from R3; +1.5-point edge over the runner-up.
GM Jonathan Westerberg never relinquished the lead after R3; final gap +1.5 over the runner-up.
GM Jonathan Westerberg lost to Lukas Willstedt (White).
GM Jonathan Westerberg 4+4 wins (R1–R4, R6–R9)Lukas Willstedt 3 wins (R5–R7)Sebastian Shi 3 wins (R7–R9)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1GMJonathan Westerberg | * | 0 | 1 | 1 |
| 2Lukas Willstedt | 1 | * | 1 | ½ |
| 3Sebastian Shi | 0 | 0 | * | 1 |
| 4Nils Molin | 0 | ½ | 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Westerberg, JonathanGM | 2478 | SWE | +5N | +11B | +9N | +3B | −2B | +6N | +8B | +4N | +7B | 8.0 | 40.0 | 43.5 | 37.00 | 2429 | -2.8 |
| 2 | Willstedt, Lukas | 2057 | SWE | F | +7B | +6N | =14B | +1N | +3B | +9N | =5B | =4B | 6.5 | 39.5 | 39.5 | 33.25 | 2211 | +59.6 |
| 3 | Shi, Sebastian | 1905 | SWE | +16B | F | +4N | −1N | +10B | −2N | +12B | +9B | +5N | 6.0 | 37.0 | 37.0 | 22.50 | 2059 | +56.8 |
| 4 | Malmquist, Neo | 1914 | SWE | =7N | +10B | −3B | =8N | +12B | =11N | +6B | −1B | =2N | 5.0 | 41.5 | 45.0 | 21.50 | 1890 | -12.4 |
| 5 | Molin, Nils | 1823 | SWE | −1B | +16N | +17B | =6B | −9N | +7N | +11B | =2N | −3B | 5.0 | 38.0 | 39.0 | 15.50 | 1895 | +15.4 |
| 6 | Ranby, Hans | 1900 | SWE | +12N | +14B | −2B | =5N | +11B | −1B | −4N | +8N | −10B | 4.5 | 40.0 | 42.5 | 16.50 | 1898 | -3.6 |
| 7 | Nylund, Benjamin | 1605 | NZL | =4B | −2N | −15N | +17B | +13N | −5B | +16N | +11B | −1N | 4.5 | 33.5 | 34.5 | 11.00 | 1825 | +44.6 |
| 8 | Hagstrom, Jacob 1994 | 1803 | SWE | −14N | +12B | −11N | =4B | +15N | +16B | −1N | −6B | +18N | 4.5 | 29.5 | 29.5 | 8.50 | 1832 | +1.6 |
| 9 | Helin, MikaelCM | 1932 | SWE | +17B | +13N | −1B | −11N | +5B | +10N | −2B | −3N | −12N | 4.0 | 39.5 | 40.5 | 13.00 | 1863 | -14.8 |
| 10 | Sun Aslund, Bruce | 1687 | SWE | F | −4N | +16B | +15B | −3N | −9B | F | +13N | +6N | 4.0 | 25.0 | 25.0 | 10.00 | 1890 | +72.8 |
| 11 | Bergqvist, Morris | 1849 | SWE | +18B | −1N | +8B | +9B | −6N | =4B | −5N | −7N | F | 3.5 | 35.5 | 35.5 | 11.00 | 1788 | -14.4 |
| 12 | Aelius,Gary | 0 | SWE | −6B | −8N | +18N | +13B | −4N | =15B | −3N | F | +9B | 3.5 | 28.5 | 28.5 | 7.75 | 1768 | 0.0 |
| 13 | Jouandet-Dahlen, Loup | 1649 | FRA | +15B | −9B | −14N | −12N | −7B | +18N | F | −10B | +16B | 3.0 | 21.0 | 21.0 | 2.50 | 1683 | +1.0 |
| 14 | Brodin, Leo | 2092 | SWE | +8B | −6N | +13B | =2N | F | F | F | F | F | 2.5 | 18.5 | 18.5 | 10.75 | 1958 | -11.2 |
| 15 | Varjomaa, Stefan | 1982 | SWE | −13N | F | +7B | −10N | −8B | =12N | F | F | F | 1.5 | 19.5 | 19.5 | 6.25 | 1493 | -95.2 |
| 16 | Bardhan, Sayak Raj | 1594 | SWE | −3N | −5B | −10N | F | F | −8N | −7B | +18B | −13N | 1.0 | 28.0 | 28.0 | 0.00 | 945 | -74.0 |
| 17 | Krusa, Gustav | 1605 | SWE | −9N | +18B | −5N | −7N | F | F | F | F | F | 1.0 | 14.5 | 14.5 | 0.00 | 987 | -33.6 |
| 18 | Kozik,Irina | 0 | SWE | −11N | −17N | −12B | F | F | −13B | F | −16N | −8B | 0.0 | 18.0 | 18.0 | 0.00 | 899 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Sun Aslund, BruceSWE+72.84.0 pts · #8
- 2Willstedt, LukasSWE+59.66.5 pts · #2
- 3Shi, SebastianSWE+56.86.0 pts · #3
- 1Varjomaa, StefanSWE-95.21.5 pts · #15
- 2Bardhan, Sayak RajSWE-74.01.0 pts · #18
- 3Krusa, GustavSWE-33.61.0 pts · #17
- R5+421 Elo gap
- R1+333 Elo gap
- R4+295 Elo gap