Abierto de Invierno 2025
25 players participated in this 6-round tournament, held from 14 Aug 2025 to 16 Aug 2025 in San Miguel, Bs As, Argentina. Top 10 Elo average was 1814, and top seed was Cristian Zarate (🇦🇷 ARG, 2067).
Guadalupe Milagros Mayeregger (🇦🇷 ARG, 1875) won with 4.5/6, ahead of Cristian Zarate (4.5) and Juan Ignacio Peredo (4.0). Mayeregger won on tie-break after catching the field in the final round.
The biggest upset came in round 1: Martin Altinier (1441) beat Julio Leonel Lizardo (1734), a +293-point gap.
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How it unfolded
Top 6 · 6 roundsTight race until R4; 2 players tied at 4.5/6, decided on Buchholz.
Juan Ignacio Peredo takes the sole lead (4.0/5).
2 players finish on 4.5/6. Mayeregger takes the title on Buchholz Cut1 (16.5).
Cristian Zarate drew with Guadalupe Milagros Mayeregger (White).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Cristian Zarate | * | ½ | — | — |
| 2Guadalupe Milagros Mayeregger | ½ | * | — | 0 |
| 3Tomas Arce | — | — | * | — |
| 4Lucas Ariel Zarate | — | 1 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Mayeregger, Guadalupe Milagros | 1875 | ARG | +23B | +16N | =2N | −5B | +15B | +3N | 4.5 | 16.5 | 17.5 | 11.25 | 1891 | +3.0 |
| 2 | Zarate, Cristian | 2067 | ARG | +25B | +18N | =1B | +10N | F | +8B | 4.5 | 16.0 | 16.5 | 10.25 | 2103 | +3.0 |
| 3 | Peredo, Juan Ignacio | 0 | ARG | =4B | +11N | =8B | +7N | +6N | −1B | 4.0 | 19.0 | 22.0 | 14.00 | 1769 | 0.0 |
| 4 | Garcia, Manuel Nicolas | 1641 | ARG | =3N | +13B | =7N | −6B | +9N | +17B | 4.0 | 17.5 | 19.5 | 11.75 | 1999 | +64.0 |
| 5 | Zarate, Lucas Ariel | 1907 | ARG | +15N | +9B | F | +1N | F | +10B | 4.0 | 17.0 | 17.0 | 12.50 | 2501 | +40.0 |
| 6 | Arce, Tomas | 0 | ARG | +19B | =8N | =14B | +4N | −3B | +15N | 4.0 | 15.5 | 17.0 | 10.25 | 1746 | 0.0 |
| 7 | Taborda, Martin Alejandro | 1724 | ARG | F | +22N | =4B | −3B | +23N | +12B | 3.5 | 13.5 | 13.5 | 7.50 | 1933 | +32.8 |
| 8 | Alvarez, Mia Morena | 1738 | ARG | F | =6B | =3N | +12B | +17N | −2N | 3.0 | 18.5 | 20.5 | 9.00 | 1831 | +13.6 |
| 9 | Lugo, Lisandro | 1562 | ARG | +11B | −5N | +20B | −17N | −4B | +23N | 3.0 | 14.5 | 15.5 | 5.50 | 1608 | +8.0 |
| 10 | Gambini, Juan Carlos | 1737 | ARG | +17N | +21B | F | −2B | +14N | −5N | 3.0 | 14.5 | 14.5 | 6.00 | 1792 | +5.0 |
| 11 | Lope de Vergara, Gustavo | 1767 | ARG | −9N | −3B | =25N | =22B | +16N | +14B | 3.0 | 13.0 | 13.5 | 5.50 | 1627 | -14.8 |
| 12 | Blanco, Alejandro Javier | 1544 | ARG | F | +25N | +16B | −8N | +24B | −7N | 3.0 | 12.5 | 13.0 | 3.50 | 1708 | +17.4 |
| 13 | Villar Gauto, Silvio Mariano | 1863 | ARG | F | −4N | +24B | −14N | +18B | +20N | 3.0 | 10.5 | 10.5 | 4.00 | 1631 | -44.0 |
| 14 | Frias Perez, Mateo | 1687 | ARG | −16B | +23N | =6N | +13B | −10B | −11N | 2.5 | 15.0 | 16.0 | 6.00 | 1736 | +10.4 |
| 15 | Amerio, Pablo | 1630 | ARG | −5B | +19N | +18B | F | −1N | −6B | 2.0 | 15.5 | 15.5 | 3.00 | 1739 | +20.8 |
| 16 | Lopez, Esteban Nicolas | 0 | ARG | +14N | −1B | −12N | −23B | −11B | +18N | 2.0 | 14.5 | 15.5 | 4.00 | 1524 | 0.0 |
| 17 | Perez Mosqueda, Valeria Ritzabeth | 1506 | ARG | −10B | F | +21N | +9B | −8B | −4N | 2.0 | 14.5 | 14.5 | 4.50 | 1476 | -6.4 |
| 18 | Altinier, Martin | 1441 | ARG | +24N | −2B | −15N | =21B | −13N | −16B | 1.5 | 13.0 | 14.0 | 1.75 | 1568 | +17.6 |
| 19 | Nievas, Daniel Mario | 1732 | ARG | −6N | −15B | +22B | =20N | F | F | 1.5 | 9.0 | 9.0 | 2.25 | 1627 | -5.8 |
| 20 | Gigena, Federico | 0 | ARG | F | F | −9N | =19B | +21N | −13B | 1.5 | 9.0 | 9.0 | 2.25 | 1445 | 0.0 |
| 21 | Ramos Otero, Tobias | 0 | ARG | F | −10N | −17B | =18N | −20B | +24N | 1.5 | 9.0 | 9.0 | 1.75 | 1517 | 0.0 |
| 22 | Ayub Soto, Mateo | 1623 | ARG | F | −7B | −19N | =11N | +25B | F | 1.5 | 8.5 | 8.5 | 2.00 | 1628 | 0.0 |
| 23 | Villar, Silvio Eduardo | 1581 | ARG | −1N | −14B | F | +16N | −7B | −9B | 1.0 | 15.5 | 15.5 | 2.00 | 912 | -53.2 |
| 24 | Lizardo, Julio Leonel | 1734 | ARG | −18B | F | −13N | +25B | −12N | −21B | 1.0 | 9.5 | 9.5 | 0.50 | 1427 | -62.4 |
| 25 | Ouvrard Pauer, Roman | 1637 | ARG | −2N | −12B | =11B | −24N | −22N | F | 0.5 | 13.0 | 13.0 | 1.50 | 1375 | -56.8 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Garcia, Manuel NicolasARG+64.04.0 pts · #4
- 2Zarate, Lucas ArielARG+40.04.0 pts · #3
- 3Taborda, Martin AlejandroARG+32.83.5 pts · #5
- 1Lizardo, Julio LeonelARG-62.41.0 pts · #20
- 2Ouvrard Pauer, RomanARG-56.80.5 pts · #24
- 3Villar, Silvio EduardoARG-53.21.0 pts · #25
- R1+293 Elo gap
- R2+222 Elo gap
- R1+205 Elo gap