CChessStats

AlphaChess FIDE Weekender - North London Gateway - Oct 2025 - expert

Open SwissStandard

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.

Location
🇬🇧Potters Bar, England
Dates
04 Oct 2025 → 05 Oct 2025
Time control
Standard: All Moves in 80 Min. Incr. 10 Sec. / /
System
Swiss · 5 rounds
Top seed
🇬🇧FMStanley Badacsonyi2286
Avg top 10
2,104
Participants
18
Titled players · 5
FM×2
CM×3
Federations · 7 represented
🇬🇧England×12
🇹🇷Turkiye×1
🇫🇷France×1
🇮🇹Italy×1
🇨🇳China×1
🇩🇪Germany×1
🇵🇱Poland×1
Top 3

How it unfolded

Top 6 · 5 rounds

FM 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.

Co-leaders
7
3
1
2
1
1.52.545R1R2R3R4R5Badacsonyi takes lead
R5 · LEADER CHANGE05 Oct

FM Stanley Badacsonyi takes the sole lead (4.5/5).

WIN STREAKS · 2 top finishers

CM Jan Murawski 4 wins (R2–R5)Junhao Xian 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1FMStanley Badacsonyi*
1
1
2CMJan Murawski*
0
3Junhao Xian
0
*
4Adam Sieczkowski
0
1
*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Badacsonyi, StanleyFM2286ENG+10N+6B=5N+4B+3N4.512.514.012.502426+13.2
2Murawski, JanCM2165ENG3N+17B+10N+11B+7N4.08.58.55.002169+3.6
3Sieczkowski, Adam1909POL+2B=7N+12B+6N1B3.513.014.59.002295+48.8
4Xian, Junhao2136CHN+11B+15N+7B1N=5B3.511.011.05.002197+11.0
5Fernandez, MichaelFM2222ENG+13B+14N=1BF=4N3.010.510.56.502301+8.6
6Clarke, Connor2088ENG+16B1N+15B3B=12N2.59.59.50.751958-14.6
7Yu, RockCM2099ENG+9N=3B4N=10B2B2.013.014.54.501934-44.4
8Erdemir, Ozan1759TUR14B=11N=13B12N+18N2.05.55.51.501836+7.8
9Thompson, Daniel1875ENG7B13NF+15N+10B2.05.05.01.501924+5.4
10Udovenko, Daniel1945ENG1B+16N2B=7N9N1.512.512.51.001895-17.2
11Hertog, Alexander1895ENG4N=8BF2N+15B1.59.59.51.001856-11.6
12Lebedev, LionCM2091ENGFF3N+8B=6B1.58.08.03.251919-24.8
13Bevis, Noah1940ENG5N+9B=8NFF1.57.07.03.001951+0.4
14Allorant, Adrien2071FRA+8N5BFFF1.05.05.02.001991-3.2
15Poderico, Francesco1712ITAF4B6N9B11N0.09.59.50.001192-14.4
16Shah, Meet1790ENG6N10BFFF0.04.04.00.001217-9.0
17Steenfatt, Niklas1794GERF2NFFF0.04.04.00.001365-4.0
18V, Krish1545ENGFFFF8B0.02.02.00.00959-9.2

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets