2025 London Christmas Congress Open
Open SwissStandard
23 players participated in this 6-round tournament, held from 28 Dec 2025 to 30 Dec 2025 in Harrow, England. 1 titled players from 7 federations. Top 10 Elo average was 1953, and top seed was George Zhao (🇬🇧 ENG, CM, 2097).
Gagan B R (🇮🇳 IND, 1908) won with 4.5/6, ahead of Nasir Rizvi (4.5) and Isaac Lam (4.5). R won on tie-break after catching the field in the final round.
The biggest upset came in round 6: Jia-Arn Yeung (1613) beat Daniel Longley (1935), a +322-point gap.
Location
🇬🇧Harrow, England
Dates
28 Dec 2025 → 30 Dec 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 6 rounds
Titled players · 1
CM×1
Federations · 7 represented
🇬🇧England×17
🇫🇷France×1
🇿🇼Zimbabwe×1
🇲🇾Malaysia×1
🇮🇳India×1
🇬🇧Wales×1
🇬🇷Greece×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsTight race until R6; 3 players tied at 4.5/6, decided on Buchholz.
Co-leaders
9
3
1
1
1
3
R6 · TIEBREAK CLUSTER
3 players finish on 4.5/6. R takes the title on Buchholz Cut1 (20.5).
WIN STREAKS · 2 top finishers
Isaac Lam 3 wins (R2–R4)Nasir Rizvi 3 wins (R1–R3)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Gagan B R | * | ½ | ½ | 1 |
| 2Isaac Lam | ½ | * | — | — |
| 3Nasir Rizvi | ½ | — | * | — |
| 4Chee Sian Sebastien Chua | 0 | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Gagan B R | 1908 | IND | +20B | =4N | +5B | =2N | =3B | +7N | 4.5 | 20.5 | 21.5 | 15.00 | 2055 | +22.6 |
| 2 | Rizvi, Nasir | 1935 | WLS | +13N | +12B | +14N | =1B | =6B | =4N | 4.5 | 17.5 | 20.0 | 14.00 | 2045 | +16.8 |
| 3 | Lam, Isaac | 1792 | ENG | −19N | +16B | +8N | +10B | =1N | +6B | 4.5 | 16.5 | 17.5 | 14.25 | 2089 | +91.2 |
| 4 | Devalia, Aadishesh | 1749 | ENG | +17N | =1B | −10N | +11B | +12N | =2B | 4.0 | 18.0 | 20.0 | 12.50 | 2023 | +70.0 |
| 5 | Chua, Chee Sian Sebastien | 2012 | MAS | =11N | +8B | −1N | =13B | +14N | +10B | 4.0 | 16.5 | 19.0 | 11.75 | 2047 | +5.4 |
| 6 | Chakanyuka, Charles | 1938 | ZIM | F | +15B | +9N | +14B | =2N | −3N | 3.5 | 17.5 | 17.5 | 10.75 | 2003 | +8.8 |
| 7 | Soulier, Alfred | 1962 | ENG | =15N | =11B | =13N | +17B | +9N | −1B | 3.5 | 16.0 | 18.0 | 9.50 | 1918 | -10.4 |
| 8 | Killick, Tristan | 1848 | ENG | +21B | −5N | −3B | +18N | +16B | =12B | 3.5 | 15.0 | 15.5 | 5.50 | 1822 | -6.4 |
| 9 | Liu, Jacob | 1866 | ENG | +16N | +19B | −6B | =12N | −7B | +13N | 3.5 | 14.5 | 15.5 | 7.00 | 1908 | +16.4 |
| 10 | Zhao, GeorgeCM | 2097 | ENG | +18B | −14N | +4B | −3N | +15B | −5N | 3.0 | 17.5 | 19.0 | 8.00 | 1841 | -73.6 |
| 11 | Khakimov, Bobur | 0 | ENG | =5B | =7N | =15B | −4N | =13N | +21B | 3.0 | 16.5 | 17.0 | 6.75 | 1776 | -25.2 |
| 12 | Li, Harvey | 1878 | ENG | +23B | −2N | +21N | =9B | −4B | =8N | 3.0 | 16.0 | 16.5 | 4.50 | 1739 | -37.2 |
| 13 | Tamilselvan, Tara | 1741 | ENG | −2B | +23N | =7B | =5N | =11B | −9B | 2.5 | 18.5 | 19.0 | 5.75 | 1814 | +16.8 |
| 14 | Hill, Tom | 1897 | FRA | +22N | +10B | −2B | −6N | −5B | =15N | 2.5 | 17.5 | 18.0 | 4.75 | 1852 | -7.8 |
| 15 | Clery, Liam | 1779 | ENG | =7B | −6N | =11N | +22B | −10N | =14B | 2.5 | 15.5 | 16.0 | 5.00 | 1846 | +14.4 |
| 16 | Yeung, Jia-Arn | 1613 | ENG | −9B | −3N | F | +21B | −8N | +17N | 2.0 | 14.0 | 14.0 | 2.50 | 1668 | +8.4 |
| 17 | Longley, Daniel | 1935 | ENG | −4B | +20N | =18B | −7N | =21N | −16B | 2.0 | 12.0 | 12.5 | 2.00 | 1622 | -80.8 |
| 18 | Li, Reya | 1811 | ENG | −10N | +22B | =17N | −8B | F | F | 1.5 | 9.0 | 9.0 | 1.50 | 1807 | -4.0 |
| 19 | Udovenko, Daniel | 1971 | ENG | +3B | −9N | F | F | F | F | 1.0 | 8.0 | 8.0 | 4.50 | 1830 | -14.8 |
| 20 | Wilde, Grace | 1719 | ENG | −1N | −17B | =22N | =23B | F | F | 1.0 | 7.5 | 7.5 | 0.50 | 1606 | -23.6 |
| 21 | Jacobs, Talvin | 0 | ENG | −8N | F | −12B | −16N | =17B | −11N | 0.5 | 13.5 | 13.5 | 1.00 | 1497 | 0.0 |
| 22 | White, Freddie | 1694 | ENG | −14B | −18N | =20B | −15N | F | F | 0.5 | 7.5 | 7.5 | 0.50 | 1480 | -37.2 |
| 23 | Najjari Omidkhah, Soroush | 1658 | GRE | −12N | −13B | F | =20N | F | F | 0.5 | 6.5 | 6.5 | 0.50 | 1506 | -20.8 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Lam, IsaacENG+91.24.5 pts · #2
- 2Devalia, AadisheshENG+70.04.0 pts · #9
- 3Gagan B RIND+22.64.5 pts · #1
Top rating losers
- 1Longley, DanielENG-80.82.0 pts · #16
- 2Zhao, GeorgeCMENG-73.63.0 pts · #7
- 3Li, HarveyENG-37.23.0 pts · #15
Biggest upsets
- R6+322 Elo gap
- R4+305 Elo gap
- R2+200 Elo gap