21 Open de Payerne - Open A Round 4-5
16 players participated in this 5-round tournament, held from 05 Mar 2026 to 19 Mar 2026 in Payerne, Switzerland. 1 titled players from 2 federations. Top 10 Elo average was 1907, and top seed was Jean-Robert Vesin (π«π· FRA, FM, 2151).
Patrick Andre Pantillon (π¨π SUI, 1744) won with 2.0/5, ahead of Philippe Dobler (1.5) and Franck Yersin (1.5). Pantillon clinched sole first place in the final round.
The biggest upset came in round 5: Thierry Bonferroni (1958) beat Jean-Robert Vesin (FM, 2151), a +193-point gap.
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How it unfolded
Top 6 Β· 5 roundsPatrick Andre Pantillon led from R5; +0.5-point edge over the runner-up. Title race converged from 6 co-leaders at R4 to 1 by R5.
Patrick Andre Pantillon held the sole lead from R5 through R5 without losing it.
Key matchups Β· top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Patrick Andre Pantillon | * | β | β | β |
| 2Philippe Dobler | β | * | Β½ | β |
| 3Franck Yersin | β | Β½ | * | β |
| 4Thierry Bonferroni | β | β | β | * |
Grille amΓ©ricaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Ξ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Pantillon, Patrick Andre | 1744 | SUI | F | F | F | +15B | +6N | 2.0 | 1.0 | 1.0 | 1.00 | 2408 | +13.2 |
| 2 | Dobler, Philippe | 1866 | SUI | F | F | F | +9B | =3B | 1.5 | 2.5 | 2.5 | 1.75 | 2022 | +8.4 |
| 3 | Yersin, Franck | 1921 | SUI | F | F | F | +8B | =2N | 1.5 | 2.5 | 2.5 | 1.75 | 1994 | +3.4 |
| 4 | Bonferroni, Thierry | 1958 | SUI | F | F | F | =14N | +5N | 1.5 | 1.5 | 1.5 | 1.25 | 2216 | +14.2 |
| 5 | Vesin, Jean-RobertFM | 2151 | FRA | F | F | F | +7N | β4B | 1.0 | 2.5 | 2.5 | 1.00 | 1934 | -10.0 |
| 6 | Abaci, Aydin | 0 | SUI | F | F | F | +16N | β1B | 1.0 | 2.0 | 2.0 | 0.00 | 1683 | +3.2 |
| 7 | Kupalov, Igor | 1896 | SUI | F | F | F | β5B | +13N | 1.0 | 1.5 | 1.5 | 0.50 | 1962 | +1.6 |
| 8 | Bonferroni, Carlo | 1737 | SUI | F | F | F | β3N | +16B | 1.0 | 1.5 | 1.5 | 0.00 | 1777 | +1.8 |
| 9 | Metille, Natean | 1762 | SUI | F | F | F | β2N | +15B | 1.0 | 1.5 | 1.5 | 0.00 | 1727 | -0.8 |
| 10 | Bourban, Karel | 1813 | SUI | F | F | F | =13B | =12B | 1.0 | 1.0 | 1.0 | 0.50 | 1813 | -0.6 |
| 11 | Rochat, Vivian | 1940 | SUI | F | F | F | +12N | β | 1.0 | 0.5 | 0.5 | 0.50 | 2628 | +6.0 |
| 12 | Schaer, Bryan | 1826 | SUI | F | F | F | β11B | =10N | 0.5 | 2.0 | 2.0 | 0.50 | 1707 | -6.2 |
| 13 | Boivin, Remi | 1799 | SUI | F | F | F | =10N | β7B | 0.5 | 2.0 | 2.0 | 0.50 | 1683 | -11.2 |
| 14 | Buerki, Gilles | 1899 | SUI | F | F | F | =4B | β | 0.5 | 1.5 | 1.5 | 0.75 | 1939 | +0.6 |
| 15 | Boivin, Clement | 1634 | SUI | F | F | F | β1N | β9N | 0.0 | 3.0 | 3.0 | 0.00 | 935 | -24.8 |
| 16 | Schweizer, Ulrich | 1642 | SUI | F | F | F | β6B | β8N | 0.0 | 2.0 | 2.0 | 0.00 | 883 | -17.2 |
Key insights
Biggest movers and upsets β the story behind the numbers.
- 1Bonferroni, ThierrySUI+14.21.5 pts Β· #4
- 2Pantillon, Patrick AndreSUI+13.22.0 pts Β· #1
- 3Dobler, PhilippeSUI+8.41.5 pts Β· #2
- 1Boivin, ClementSUI-24.80.0 pts Β· #16
- 2Schweizer, UlrichSUI-17.20.0 pts Β· #15
- 3Boivin, RemiSUI-11.20.5 pts Β· #14
- R5+193 Elo gap