OCTAVO GRAND PRIX OVETENSE 2025
Open SwissStandard
39 players participated in this 7-round tournament, held from 18 Jul 2025 to 20 Jul 2025 in Coronel Oviedo, Paraguay. 2 titled players. Top 10 Elo average was 1894, and top seed was Arnold Mayeregger (🇵🇾 PAR, 2183).
Arnold Mayeregger (🇵🇾 PAR, 2183) won with 6.0/7, ahead of Jose Antonio Alarcon (5.5) and Enrique Allo Collante (5.5). Mayeregger shared the lead from round 5 and won solo starting round 6.
The biggest upset came in round 5: Martin Alejandro Aguilar Petersen (1485) beat Augusto Gonzalez (1979), a +494-point gap.
Location
🇵🇾Coronel Oviedo, Paraguay
Dates
18 Jul 2025 → 20 Jul 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 7 rounds
Titled players · 2
CM×1
WCM×1
Federations · 1 represented
🇵🇾Paraguay×32
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 7 roundsArnold Mayeregger led from R6; +0.5-point edge over the runner-up.
Co-leaders
10
5
2
1
2
1
1
R6 · LEADER CHANGE20 Jul
Arnold Mayeregger takes the sole lead (5.5/6).
R3 · HEAD-TO-HEAD · WINNER VS 2ND
Arnold Mayeregger drew with Jose Antonio Alarcon (Black).
WIN STREAKS · 2 top finishers
Arnold Mayeregger 3 wins (R4–R6)Enrique Allo Collante 4 wins (R1–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Arnold Mayeregger | * | ½ | ½ | 1 |
| 2Jose Antonio Alarcon | ½ | * | 1 | — |
| 3Enrique Allo Collante | ½ | 0 | * | 1 |
| 4CMRodolfo Cantero | 0 | — | 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Mayeregger, Arnold | 2183 | PAR | +13N | +10B | =2N | +23B | +12N | +4B | =3N | 6.0 | 27.0 | 30.0 | 24.50 | 2232 | +10.6 |
| 2 | Alarcon, Jose Antonio | 2046 | PAR | +17B | +15N | =1B | +14N | +3B | =7N | =5B | 5.5 | 28.0 | 31.5 | 23.75 | 2019 | +3.2 |
| 3 | Allo Collante, Enrique | 2107 | PAR | +26N | +22B | +4N | +8B | −2N | +9B | =1B | 5.5 | 28.0 | 30.5 | 22.00 | 2164 | +14.2 |
| 4 | Cantero, RodolfoCM | 2178 | PAR | +11B | +5N | −3B | +15N | +14B | −1N | +19B | 5.0 | 27.5 | 31.0 | 19.50 | 2041 | -13.8 |
| 5 | Leith Acosta, Marcelo Alejandro | 1651 | PAR | +35N | −4B | =13N | +30B | +23N | +12B | =2N | 5.0 | 22.5 | 23.5 | 14.00 | 1876 | +52.4 |
| 6 | Vera Mercado, Yanina Fiorella | 1672 | PAR | =31N | +24B | −8B | +37N | +17B | =15N | +7B | 5.0 | 21.0 | 22.0 | 14.75 | 1689 | +3.2 |
| 7 | Aguilar Petersen, Martin Alejandro | 1485 | PAR | +9N | −12B | +10N | +22B | +8N | =2B | −6N | 4.5 | 26.5 | 29.5 | 18.25 | 1846 | +124.8 |
| 8 | Gonzalez, Augusto | 1979 | PAR | +16N | +36B | +6N | −3N | −7B | +11B | =12N | 4.5 | 26.0 | 27.0 | 15.25 | 1765 | -25.2 |
| 9 | Contrera Noguera, Pablo David | 1741 | PAR | −7B | +18N | +11B | =17N | +29B | −3N | =14B | 4.0 | 24.5 | 26.5 | 13.00 | 1649 | -15.4 |
| 10 | Martinez Mieres, Carlos Gerardo | 1656 | PAR | +18B | −1N | −7B | +28N | =20B | +29N | =21N | 4.0 | 23.0 | 25.0 | 11.00 | 1600 | -18.8 |
| 11 | Cuenca Ojeda, Alejandro Martin | 1569 | PAR | −4N | +16B | −9N | +32B | +26B | −8N | +28B | 4.0 | 21.5 | 23.5 | 10.00 | 1689 | +21.6 |
| 12 | Lugo Martinez, Jimena SofiaWCM | 1728 | PAR | F | +7N | +29B | +19N | −1B | −5N | =8B | 3.5 | 25.5 | 25.5 | 12.25 | 1766 | +9.7 |
| 13 | Velazquez Ruiz, Liam Fabian | 1584 | PAR | −1B | +32N | =5B | +25N | =19B | −20N | =18B | 3.5 | 24.5 | 26.5 | 11.00 | 1578 | -7.2 |
| 14 | Velazquez Vigo, Gaspar Francisco | 1619 | PAR | F | +33B | +27N | −2B | −4N | +16B | =9N | 3.5 | 22.0 | 22.0 | 9.50 | 1763 | +28.8 |
| 15 | Rojas, Jorge Armando | 1613 | PAR | +28N | −2B | +36N | −4B | +22N | =6B | F | 3.5 | 21.5 | 21.5 | 8.50 | 1746 | +18.4 |
| 16 | Lopez Jara, Isaias Ariel | 1554 | PAR | −8B | −11N | +18B | =26N | +25B | −14N | +33N | 3.5 | 21.0 | 23.0 | 9.75 | 1481 | -24.8 |
| 17 | Franco Ferreira, Mathias Samuel | 1557 | PAR | −2N | +35B | +21N | =9B | −6N | +27B | F | 3.5 | 21.0 | 21.0 | 8.50 | 1690 | +30.8 |
| 18 | Niz Ayala, Victoria Aracely | 1436 | PAR | −10N | −9B | −16N | +35B | +36N | +22B | =13N | 3.5 | 19.0 | 20.0 | 6.75 | 1485 | +10.0 |
| 19 | Moreno Silva, Valentina Gizeth | 1589 | PAR | F | +39B | +31N | −12B | =13N | +23B | −4N | 3.5 | 17.5 | 17.5 | 7.25 | 1674 | +17.6 |
| 20 | Estigarribia Caceres, Miguel Angel | 0 | PAR | F | +21B | −23N | +27B | =10N | +13B | F | 3.5 | 16.0 | 16.0 | 11.00 | 1627 | 0.0 |
| 21 | Honnebeck, Jonas Gabriel | 1599 | PAR | F | −20N | −17B | +38N | +37B | +24N | =10B | 3.5 | 16.0 | 16.0 | 7.00 | 1415 | -19.2 |
| 22 | Farina Ramirez, Marco Ricardo | 1627 | PAR | +32B | −3N | +28B | −7N | −15B | −18N | +30N | 3.0 | 21.0 | 23.0 | 6.00 | 842 | -82.0 |
| 23 | Gonzalez Gauto, Victor | 1613 | PAR | F | +37N | +20B | −1N | −5B | −19N | +34B | 3.0 | 21.0 | 21.0 | 6.50 | 951 | -21.2 |
| 24 | Alvarez Duarte, Juan Jose | 0 | PAR | F | −6N | −25B | +36B | +30N | −21B | +27N | 3.0 | 16.5 | 16.5 | 5.00 | 1459 | 0.0 |
| 25 | Martinez Meaurio, Hugo Emanuel | 0 | PAR | F | −27B | +24N | −13B | −16N | +31N | +29B | 3.0 | 16.0 | 16.0 | 7.00 | 1426 | 0.0 |
| 26 | Gonzalez Stumpfs, Danilo Fabian | 1566 | PAR | −3B | F | +35N | =16B | −11N | −34N | +38B | 2.5 | 17.0 | 17.0 | 3.75 | 1425 | -23.2 |
| 27 | Toledo Gonzalez, Facundo Josue | 1478 | PAR | F | +25N | −14B | −20N | +34B | −17N | −24B | 2.0 | 18.5 | 18.5 | 5.00 | 789 | -28.0 |
| 28 | Melgarejo Estigarribia, Erick Hernan | 0 | PAR | −15B | F | −22N | −10B | +32N | +33B | −11N | 2.0 | 18.5 | 18.5 | 4.00 | 818 | 0.0 |
| 29 | Honnebeck Portillo, Simon Leander | 1418 | PAR | F | +30B | −12N | +33B | −9N | −10B | −25N | 2.0 | 18.5 | 18.5 | 4.00 | 909 | -18.8 |
| 30 | Velazquez Colman, Abigail | 0 | PAR | F | −29N | +34B | −5N | −24B | +37N | −22B | 2.0 | 16.0 | 16.0 | 3.00 | 766 | 0.0 |
| 31 | Franco Diarte, Juan Fernando | 1451 | PAR | =6B | +38N | −19B | F | −33N | −25B | =39N | 2.0 | 15.0 | 15.0 | 3.75 | 1441 | -1.2 |
| 32 | FIDE 3721191 | 0 | — | −22N | −13B | F | −11N | −28B | +38N | +35B | 2.0 | 14.5 | 14.5 | 2.00 | 795 | 0.0 |
| 33 | FIDE 3719464 | 0 | — | F | −14N | +38B | −29N | +31B | −28N | −16B | 2.0 | 14.0 | 14.0 | 3.00 | 1319 | 0.0 |
| 34 | Hartmann Lang, Josue Ivan | 0 | PAR | F | F | −30N | +39B | −27N | +26B | −23N | 2.0 | 10.0 | 10.0 | 3.00 | 1428 | 0.0 |
| 35 | FIDE 3724280 | 0 | — | −5B | −17N | −26B | −18N | F | +36B | −32N | 1.0 | 17.5 | 17.5 | 1.00 | 752 | 0.0 |
| 36 | FIDE 3721540 | 0 | — | F | −8N | −15B | −24N | −18B | −35N | +37B | 1.0 | 16.5 | 16.5 | 1.00 | 876 | 0.0 |
| 37 | FIDE 3724298 | 0 | — | F | −23B | +39N | −6B | −21N | −30B | −36N | 1.0 | 15.0 | 15.0 | 0.50 | 830 | 0.0 |
| 38 | FIDE 3719456 | 0 | — | F | −31B | −33N | −21B | +39N | −32B | −26N | 1.0 | 12.5 | 12.5 | 0.50 | 739 | 0.0 |
| 39 | FIDE 3713210 | 0 | — | F | −19N | −37B | −34N | −38B | F | =31B | 0.5 | 9.5 | 9.5 | 1.00 | 1328 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Aguilar Petersen, Martin AlejandroPAR+124.84.5 pts · #5
- 2Leith Acosta, Marcelo AlejandroPAR+52.45.0 pts · #10
- 3Franco Ferreira, Mathias SamuelPAR+30.83.5 pts · #12
Top rating losers
- 1Farina Ramirez, Marco RicardoPAR-82.03.0 pts · #31
- 2Toledo Gonzalez, Facundo JosuePAR-28.02.0 pts · #37
- 3Gonzalez, AugustoPAR-25.24.5 pts · #9
Biggest upsets
- R5+494 Elo gap
- R1+256 Elo gap
- R6+191 Elo gap