21 Open de Payerne - Open A round 6
Open SwissStandard
14 players participated in this 6-round tournament, held on 23 Apr 2026 in Payerne, Switzerland. 1 titled players from 2 federations. Top 10 Elo average was 1884, and top seed was Daniel Stroppa (🇨🇭 SUI, FM, 2192).
Thierry Bonferroni (🇨🇭 SUI, 1958) won with 1.5/6, ahead of Gilles Buerki (1.0) and Michael Cardoso Rodrigues (1.0). Bonferroni broke clear in the final round.
The biggest upset came in round 5: Thierry Bonferroni (1958) beat Jean-Robert Vesin (FM, 2151), a +193-point gap.
Location
🇨🇭Payerne, Switzerland
Dates
23 Apr 2026
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 6 rounds
Avg top 10
1,884
Participants
14
Titled players · 1
FM×1
Federations · 2 represented
🇨🇭Switzerland×13
🇫🇷France×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 6 roundsThierry Bonferroni led from R6; +0.5-point edge over the runner-up. Title race converged from 17 co-leaders at R4 to 1 by R6.
Co-leaders
18
17
17
17
2
1
R6–R6 · LEAD HELD
Thierry Bonferroni held the sole lead from R6 through R6 without losing it.
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Thierry Bonferroni | * | — | — | — |
| 2Michael Cardoso Rodrigues | — | * | 0 | — |
| 3Gilles Buerki | — | 1 | * | — |
| 4Bryan Schaer | — | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Bonferroni, Thierry | 1958 | SUI | F | F | F | F | +10N | =7B | 1.5 | 0.5 | 0.5 | 0.25 | 2211 | +14.2 |
| 2 | Buerki, Gilles | 1899 | SUI | F | F | F | F | +3N | — | 1.0 | 1.0 | 1.0 | 1.00 | 2637 | +7.8 |
| 3 | Cardoso Rodrigues, Michael | 1830 | SUI | F | F | F | F | −2B | +11N | 1.0 | 1.0 | 1.0 | 0.00 | 1834 | -0.2 |
| 4 | Schaer, Bryan | 1826 | SUI | F | F | F | F | F | +12B | 1.0 | 0.0 | 0.0 | 0.00 | 2671 | +11.4 |
| 5 | Boivin, Clement | 1634 | SUI | F | F | F | F | F | +14B | 1.0 | 0.0 | 0.0 | 0.00 | 2426 | +22.4 |
| 6 | Boivin, Remi | 1799 | SUI | F | F | F | F | F | +13B | 1.0 | 0.0 | 0.0 | 0.00 | 2530 | +15.5 |
| 7 | Rochat, Vivian | 1940 | SUI | F | F | F | F | F | =1N | 0.5 | 1.5 | 1.5 | 0.75 | 1942 | -0.8 |
| 8 | Bonferroni, Carlo | 1737 | SUI | F | F | F | F | F | =9B | 0.5 | 0.5 | 0.5 | 0.25 | 1822 | +2.0 |
| 9 | Bourban, Karel | 1813 | SUI | F | F | F | F | F | =8N | 0.5 | 0.5 | 0.5 | 0.25 | 1752 | -2.0 |
| 10 | Vesin, Jean-RobertFM | 2151 | FRA | F | F | F | F | −1B | F | 0.0 | 1.5 | 1.5 | 0.00 | 1142 | -13.4 |
| 11 | Pantillon, Patrick Andre | 1744 | SUI | F | F | F | F | F | −3B | 0.0 | 1.0 | 1.0 | 0.00 | 1037 | -7.6 |
| 12 | Dobler, Philippe | 1866 | SUI | F | F | F | F | F | −4N | 0.0 | 1.0 | 1.0 | 0.00 | 1022 | -11.4 |
| 13 | Metille, Natean | 1762 | SUI | F | F | F | F | F | −6N | 0.0 | 1.0 | 1.0 | 0.00 | 981 | -17.2 |
| 14 | Abaci, Aydin | 0 | SUI | F | F | F | F | F | −5N | 0.0 | 1.0 | 1.0 | 0.00 | 780 | -11.2 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Boivin, ClementSUI+22.41.0 pts · #5
- 2Boivin, RemiSUI+15.51.0 pts · #6
- 3Bonferroni, ThierrySUI+14.21.5 pts · #1
Top rating losers
- 1Metille, NateanSUI-17.20.0 pts · #13
- 2Vesin, Jean-RobertFMFRA-13.40.0 pts · #11
- 3Dobler, PhilippeSUI-11.40.0 pts · #12
Biggest upsets
- R5+193 Elo gap