CChessStats

Southall FIDE Congress August 2025 - U2400

Open SwissStandard

18 players participated in this 5-round tournament, held from 16 Aug 2025 to 17 Aug 2025 in Southall, England. 1 titled players from 5 federations. Top 10 Elo average was 1890, and top seed was Conor O`Donnell (🇮🇪 IRL, FM, 2301).

Conor O`Donnell (🇮🇪 IRL, FM, 2301) won with 4.0/5, ahead of Jonathan Rubeck (3.5) and Navid Ebrahimi (3.5). O`Donnell won solo starting round 3.

The biggest upset came in round 5: Otgonbayar Chinguun (1956) beat Conor O`Donnell (FM, 2301), a +345-point gap.

Location
🇬🇧Southall, England
Dates
16 Aug 2025 → 17 Aug 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 5 rounds
Top seed
🇮🇪FMConor O`Donnell2301
Avg top 10
1,890
Participants
18
Titled players · 1
FM×1
Federations · 5 represented
🇬🇧England×11
🇲🇳Mongolia×4
🇮🇷Iran×1
🇲🇾Malaysia×1
🇮🇪Ireland×1
Top 3

How it unfolded

Top 6 · 5 rounds

FM Conor O`Donnell led from R3; +0.5-point edge over the runner-up.

Co-leaders
7
3
1
1
1
1.52.545R1R2R3R4R5
R3–R5 · LEAD HELD

FM Conor O`Donnell held the sole lead from R3 through R5 without losing it.

R1–R4 · WIN STREAK

FM Conor O`Donnell won 4 in a row (R1–R4).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1FMConor O`Donnell*
2Jonathan Rubeck*
½
1
3Navid Ebrahimi
½
*
4Alejandro Lopez-Martinez
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1O`Donnell, ConorFM2301IRL+16B+14N+11B+8N7B4.09.510.57.502152-11.4
2Rubeck, Jonathan1850ENG+6BF=3N+5N+4B3.512.512.510.752046+15.4
3Ebrahimi, Navid1695IRI+12B+13N=2B7N+8B3.511.013.08.251923+23.6
4Munkhjin, Otgonbayar1589MGL=5B=9N+10B+11N2N3.011.513.57.251875+72.4
5Brennan, Henry1793ENG=4N=8B+13N2B+9B3.011.513.57.251761-6.4
6Lopez-Martinez, Alejandro1761ENG2N+15N7B+12N+11B3.010.511.55.001919+42.8
7Chinguun, Otgonbayar1956MGLFF+6N+3B+1N3.010.510.510.502719+26.4
8Enkhjin, Otgonbayar1662MGL+15B=5N+12B1B3N2.512.513.54.501838+42.8
9Buyandalai, Tumen1940MGL11N=4B+17N+14B5N2.510.011.04.501738-25.0
10Pepe, Salvatore1644ENG+18N11B4N=16B+17N2.57.07.52.001759+15.2
11Ratcliffe, James1787ENG+9B+10N1N4B6N2.012.515.05.001752-14.8
12Chris Biju, Calvin1843ENG3N+18B8N6B+15N2.010.010.51.501670-47.6
13Lim, Eu An Iain0MASF3B5B+15N+16N2.08.58.52.0017690.0
14Paulins, Michael1686ENG+17N1BF9N+18B2.08.08.01.501914+43.2
15Llewellyn, Julian D1796ENG8N6B+18N13B12B1.09.510.00.501572-23.2
16Martin, Jake1791ENG1N=17BF=10N13B1.09.59.51.751764-8.8
17Jiang, Freddy1833ENG14B=16N9B=18N10B1.08.08.50.751531-76.4
18Tamilselvan, Tara1795ENG10B12N15B=17B14N0.57.58.50.501394-89.2

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets