Oostkamp Chess Championship 2026
Open SwissStandard
27 players participated in this 11-round tournament, held from 12 May 2026 to 22 May 2026 in Oostkamp, Belgium. Top 10 Elo average was 1829, and top seed was Jan Vandendriessche (🇧🇪 BEL, 2067).
Jan Vandendriessche (🇧🇪 BEL, 2067) won with 10.0/11, ahead of Jarid Piceu (8.5) and Harald Larsen (8.5). Vandendriessche won solo starting round 4.
The biggest upset came in round 7: Emiel Kleppe (1776) beat Harald Larsen (1940), a +164-point gap.
Location
🇧🇪Oostkamp, Belgium
Dates
12 May 2026 → 22 May 2026
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 11 rounds
Federations · 1 represented
🇧🇪Belgium×20
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 11 roundsJan Vandendriessche led from R4; +1.5-point edge over the runner-up.
Co-leaders
12
5
2
1
1
1
1
1
1
1
1
R4–R11 · LEAD HELD
Jan Vandendriessche never relinquished the lead after R4; final gap +1.5 over the runner-up.
R6 · HEAD-TO-HEAD · WINNER VS 2ND
Jan Vandendriessche lost to Jarid Piceu (White).
WIN STREAKS · 2 top finishers
Jan Vandendriessche 5+5 wins (R1–R5, R7–R11)Harald Larsen 3+4 wins (R1–R3, R8–R11)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Jan Vandendriessche | * | 0 | 1 | 1 |
| 2Jarid Piceu | 1 | * | ½ | 1 |
| 3Harald Larsen | 0 | ½ | * | 0 |
| 4Emiel Kleppe | 0 | 0 | 1 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | R10 | R11 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Vandendriessche, Jan | 2067 | BEL | +11B | +4N | +5B | +3N | +7B | −2B | +17N | +8B | +9N | +6N | +12B | 10.0 | 67.5 | 72.0 | 63.50 | 2156 | +9.4 |
| 2 | Piceu, Jarid | 1955 | BEL | +8N | =9B | =7N | +4B | =3B | +1N | =5B | +10N | =6B | +14N | +15B | 8.5 | 68.5 | 73.5 | 56.75 | 2027 | +16.6 |
| 3 | Larsen, Harald | 1940 | BEL | +10B | +14N | +6B | −1B | =2N | +7N | −4B | +5N | +8B | +12N | +19B | 8.5 | 68.0 | 72.0 | 49.75 | 1969 | +4.8 |
| 4 | Kleppe, Emiel | 1776 | BEL | +18N | −1B | +19N | −2N | +14B | −16B | +3N | +12B | +17N | +7B | +8N | 8.0 | 63.5 | 67.5 | 44.00 | 1886 | +40.8 |
| 5 | Barzeele, Raf | 1848 | BEL | +16N | +17B | −1N | +9B | =8N | +12B | =2N | −3B | −7N | +19B | =6N | 6.5 | 66.5 | 70.5 | 35.50 | 1899 | +12.8 |
| 6 | Stevens, Rene | 1845 | BEL | +22N | +19B | −3N | =17B | +16N | −8B | +13N | +15B | =2N | −1B | =5B | 6.5 | 63.5 | 67.5 | 33.25 | 1814 | -3.4 |
| 7 | Boydens, Wim | 0 | BEL | +15B | +21N | =2B | +12N | −1N | −3B | =8N | =17B | +5B | −4N | =10B | 6.0 | 68.5 | 72.5 | 33.50 | 1786 | 0.0 |
| 8 | Defour, Eline | 1693 | BEL | −2B | +23N | +10B | +21N | =5B | +6N | =7B | −1N | −3N | +17B | −4B | 6.0 | 68.5 | 71.5 | 30.25 | 1821 | +22.4 |
| 9 | Vermeersch, Siebe | 1691 | BEL | +25N | =2N | =20B | −5N | +11B | =17B | −12N | +16B | −1B | =15N | +22B | 6.0 | 59.0 | 61.0 | 28.00 | 1767 | +16.4 |
| 10 | Meulemeester, Joran | 1681 | BEL | −3N | +22B | −8N | =16B | +13N | +21B | +19N | −2B | −12N | +20B | =7N | 6.0 | 57.0 | 61.0 | 27.00 | 1652 | -16.4 |
| 11 | FIDE 548011673 | 0 | — | −1N | =25B | +26N | −18B | −9N | +23B | =20N | +24B | +19N | +21B | −13N | 6.0 | 46.0 | 47.5 | 18.50 | 1690 | 0.0 |
| 12 | Wydaeghe, Peter | 0 | BEL | =20B | +15N | +14B | −7B | +18N | −5N | +9B | −4N | +10B | −3B | −1N | 5.5 | 65.5 | 69.5 | 28.50 | 1761 | 0.0 |
| 13 | FIDE 548011665 | 0 | — | −21B | =18N | +27B | =20N | −10B | =15N | −6B | F | +16N | +23N | +11B | 5.5 | 44.5 | 44.5 | 21.25 | 1619 | 0.0 |
| 14 | Mortier, Jan | 0 | BEL | +24N | −3B | −12N | +25B | −4N | +18B | =16N | =19B | =20N | −2B | =23N | 5.0 | 54.0 | 56.0 | 17.50 | 1564 | 0.0 |
| 15 | De Lameilleure, Remi | 0 | BEL | −7N | −12B | =25N | +23B | =19N | =13B | +18N | −6N | +27B | =9B | −2N | 5.0 | 51.5 | 52.0 | 16.75 | 1592 | -8.0 |
| 16 | De Meyere, Dirk | 1639 | BEL | −5B | +27N | +24B | =10N | −6B | +4N | =14B | −9N | −13B | F | +26N | 5.0 | 48.5 | 48.5 | 18.50 | 1619 | -6.8 |
| 17 | Rogiers, Jonny | 1788 | BEL | +23B | −5N | +21B | =6N | +20B | =9N | −1B | =7N | −4B | −8N | F | 4.5 | 60.0 | 62.0 | 20.25 | 1558 | -29.6 |
| 18 | Riviere, Yannick | 0 | BEL | −4B | =13B | +22N | +11N | −12B | −14N | −15B | −21N | F | +26B | +27N | 4.5 | 45.0 | 45.0 | 14.75 | 898 | 0.0 |
| 19 | Devos, Johan | 1689 | BEL | +27B | −6N | −4B | +24N | =15B | +20N | −10B | =14N | −11B | −5N | −3N | 4.0 | 58.5 | 59.0 | 12.50 | 1387 | -31.4 |
| 20 | FIDE 548011622 | 0 | — | =12N | +26B | =9N | =13B | −17N | −19B | =11B | =22N | =14B | −10N | F | 4.0 | 48.0 | 48.0 | 17.50 | 1383 | 0.0 |
| 21 | Ide, Djaimie | 0 | BEL | +13N | −7B | −17N | −8B | +26N | −10N | F | +18B | +22B | −11N | F | 4.0 | 47.0 | 47.0 | 15.50 | 940 | 0.0 |
| 22 | FIDE 548011630 | 0 | — | −6B | −10N | −18B | F | =25N | +26B | +24N | =20B | −21N | +27B | −9N | 4.0 | 38.0 | 38.0 | 8.00 | 941 | 0.0 |
| 23 | Martens, Sasha | 0 | BEL | −17N | −8B | F | −15N | =24B | −11N | +26B | +27N | F | −13B | =14B | 3.0 | 39.0 | 39.0 | 6.00 | 912 | 0.0 |
| 24 | FIDE 548011690 | 0 | — | −14B | F | −16N | −19B | =23N | +27B | −22B | −11N | +26N | =25B | F | 3.0 | 35.0 | 35.0 | 4.50 | 869 | 0.0 |
| 25 | Hertoghe, Stan | 0 | BEL | −9B | =11N | =15B | −14N | =22B | F | F | −26N | F | =24N | F | 2.0 | 38.5 | 38.5 | 9.00 | 1464 | 0.0 |
| 26 | FIDE 548011681 | 0 | — | F | −20N | −11B | =27N | −21B | −22N | −23N | +25B | −24B | −18N | −16B | 1.5 | 36.0 | 36.0 | 2.25 | 872 | 0.0 |
| 27 | FIDE 548011649 | 0 | — | −19N | −16B | −13N | =26B | F | −24N | F | −23B | −15N | −22N | −18B | 0.5 | 37.5 | 37.5 | 0.75 | 853 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Kleppe, EmielBEL+40.88.0 pts · #7
- 2Defour, ElineBEL+22.46.0 pts · #8
- 3Piceu, JaridBEL+16.68.5 pts · #2
Top rating losers
- 1Devos, JohanBEL-31.44.0 pts · #18
- 2Rogiers, JonnyBEL-29.64.5 pts · #16
- 3Meulemeester, JoranBEL-16.46.0 pts · #12
Biggest upsets
- R7+164 Elo gap
- R6+152 Elo gap
- R6+137 Elo gap