AlphaChess FIDE Weekender - North London Gateway - Oct 2025 - expert
18 players participated in this 5-round tournament, held from 04 Oct 2025 to 05 Oct 2025 in Potters Bar, England. 5 titled players from 7 federations. Top 10 Elo average was 2104, and top seed was Stanley Badacsonyi (🇬🇧 ENG, FM, 2286).
Stanley Badacsonyi (🇬🇧 ENG, FM, 2286) won with 4.5/5, ahead of Jan Murawski (4.0) and Adam Sieczkowski (3.5). Badacsonyi shared the lead from round 4 and broke clear in the final round.
The biggest upset came in round 1: Adam Sieczkowski (1909) beat Jan Murawski (CM, 2165), a +256-point gap.
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How it unfolded
Top 6 · 5 roundsFM Stanley Badacsonyi led from R5; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.
FM Stanley Badacsonyi takes the sole lead (4.5/5).
CM Jan Murawski 4 wins (R2–R5)Junhao Xian 3 wins (R1–R3)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1FMStanley Badacsonyi | * | — | 1 | 1 |
| 2CMJan Murawski | — | * | — | 0 |
| 3Junhao Xian | 0 | — | * | — |
| 4Adam Sieczkowski | 0 | 1 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Badacsonyi, StanleyFM | 2286 | ENG | +10N | +6B | =5N | +4B | +3N | 4.5 | 12.5 | 14.0 | 12.50 | 2426 | +13.2 |
| 2 | Murawski, JanCM | 2165 | ENG | −3N | +17B | +10N | +11B | +7N | 4.0 | 8.5 | 8.5 | 5.00 | 2169 | +3.6 |
| 3 | Sieczkowski, Adam | 1909 | POL | +2B | =7N | +12B | +6N | −1B | 3.5 | 13.0 | 14.5 | 9.00 | 2295 | +48.8 |
| 4 | Xian, Junhao | 2136 | CHN | +11B | +15N | +7B | −1N | =5B | 3.5 | 11.0 | 11.0 | 5.00 | 2197 | +11.0 |
| 5 | Fernandez, MichaelFM | 2222 | ENG | +13B | +14N | =1B | F | =4N | 3.0 | 10.5 | 10.5 | 6.50 | 2301 | +8.6 |
| 6 | Clarke, Connor | 2088 | ENG | +16B | −1N | +15B | −3B | =12N | 2.5 | 9.5 | 9.5 | 0.75 | 1958 | -14.6 |
| 7 | Yu, RockCM | 2099 | ENG | +9N | =3B | −4N | =10B | −2B | 2.0 | 13.0 | 14.5 | 4.50 | 1934 | -44.4 |
| 8 | Erdemir, Ozan | 1759 | TUR | −14B | =11N | =13B | −12N | +18N | 2.0 | 5.5 | 5.5 | 1.50 | 1836 | +7.8 |
| 9 | Thompson, Daniel | 1875 | ENG | −7B | −13N | F | +15N | +10B | 2.0 | 5.0 | 5.0 | 1.50 | 1924 | +5.4 |
| 10 | Udovenko, Daniel | 1945 | ENG | −1B | +16N | −2B | =7N | −9N | 1.5 | 12.5 | 12.5 | 1.00 | 1895 | -17.2 |
| 11 | Hertog, Alexander | 1895 | ENG | −4N | =8B | F | −2N | +15B | 1.5 | 9.5 | 9.5 | 1.00 | 1856 | -11.6 |
| 12 | Lebedev, LionCM | 2091 | ENG | F | F | −3N | +8B | =6B | 1.5 | 8.0 | 8.0 | 3.25 | 1919 | -24.8 |
| 13 | Bevis, Noah | 1940 | ENG | −5N | +9B | =8N | F | F | 1.5 | 7.0 | 7.0 | 3.00 | 1951 | +0.4 |
| 14 | Allorant, Adrien | 2071 | FRA | +8N | −5B | F | F | F | 1.0 | 5.0 | 5.0 | 2.00 | 1991 | -3.2 |
| 15 | Poderico, Francesco | 1712 | ITA | F | −4B | −6N | −9B | −11N | 0.0 | 9.5 | 9.5 | 0.00 | 1192 | -14.4 |
| 16 | Shah, Meet | 1790 | ENG | −6N | −10B | F | F | F | 0.0 | 4.0 | 4.0 | 0.00 | 1217 | -9.0 |
| 17 | Steenfatt, Niklas | 1794 | GER | F | −2N | F | F | F | 0.0 | 4.0 | 4.0 | 0.00 | 1365 | -4.0 |
| 18 | V, Krish | 1545 | ENG | F | F | F | F | −8B | 0.0 | 2.0 | 2.0 | 0.00 | 959 | -9.2 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Sieczkowski, AdamPOL+48.83.5 pts · #4
- 2Badacsonyi, StanleyFMENG+13.24.5 pts · #1
- 3Xian, JunhaoCHN+11.03.5 pts · #3
- 1Yu, RockCMENG-44.42.0 pts · #8
- 2Lebedev, LionCMENG-24.81.5 pts · #13
- 3Udovenko, DanielENG-17.21.5 pts · #10
- R1+256 Elo gap
- R3+182 Elo gap
- R4+179 Elo gap