1ra Categoria 1600 a 1800 Preparatorio Sudamericano Escolar 2025
10 players participated in this 9-round tournament, held from 20 Jun 2025 to 21 Jun 2025 in Valdivia, Chile. Top 10 Elo average was 1658, and top seed was Alison Herrera Catrilef (🇨🇱 CHI, 1767).
Martin Roy Ponce Perez (🇨🇱 CHI, 1653) won with 8.0/9, ahead of Mathias Alexander Toro Medina (6.0) and Alex Flores Castro (5.5). Ponce Perez shared the lead from round 5 and won solo starting round 6.
The biggest upset came in round 6: Gabriel Nehemias Lara Martinez (1614) beat Alex Flores Castro (1764), a +150-point gap.
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How it unfolded
Top 10 · 9 roundsMartin Roy Ponce Perez led from R6 onwards, the title was decided early. Title race converged from 4 co-leaders at R4 to 1 by R6.
Martin Roy Ponce Perez takes the sole lead (5.0/6).
Martin Roy Ponce Perez opens a +1.5-point gap over the chasing pack (closest: Mathias Alexander Toro Medina); the title is out of reach before R9.
Martin Roy Ponce Perez beat Mathias Alexander Toro Medina (Black).
Cross-table
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 🇨🇱Ponce Perez, Martin Roy | 1653 | * | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 8.0 | 32.50 | 37.0 | +142.8 | 2010 |
| 2 | 🇨🇱Toro Medina, Mathias Alexander | 1593 | 0 | * | ½ | 1 | 0 | 1 | 1 | 1 | ½ | 1 | 6.0 | 22.00 | 39.0 | +47.6 | 1791 |
| 3 | 🇨🇱Flores Castro, Alex | 1764 | 0 | ½ | * | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 5.5 | 20.00 | 39.5 | -7.6 | 1727 |
| 4 | 🇨🇱Quezada Castillo, Joaquin | 1712 | 0 | 0 | 1 | * | 1 | 0 | ½ | 1 | ½ | 1 | 5.0 | 17.75 | 40.0 | -7.6 | 1696 |
| 5 | 🇨🇱Moreira Roldan, Leonardo | 1667 | 1 | 1 | 0 | 0 | * | ½ | 0 | 0 | 1 | 1 | 4.5 | 20.25 | 40.5 | -4.8 | 1658 |
| 6 | 🇨🇱Araneda Alcaino, Arturo Nicolas | 1681 | 0 | 0 | 0 | 1 | ½ | * | ½ | 1 | 1 | ½ | 4.5 | 16.50 | 40.5 | -10.5 | 1656 |
| 7 | 🇨🇱Jaramillo Rivas, Renato | 1646 | 0 | 0 | 0 | ½ | 1 | ½ | * | ½ | ½ | 1 | 4.0 | 13.25 | 41.0 | -12.8 | 1617 |
| 9 | 🇨🇱Lara Martinez, Gabriel Nehemias | 1614 | 0 | 0 | 1 | 0 | 1 | 0 | ½ | * | 0 | 1 | 3.5 | 12.50 | 41.5 | -16.0 | 1584 |
| 8 | 🇨🇱Herrera Catrilef, Alison | 1767 | 0 | ½ | 0 | ½ | 0 | 0 | ½ | 1 | * | 1 | 3.5 | 11.50 | 41.5 | -96.8 | 1567 |
| 10 | 🇨🇱Alvarez Saldivia, Alvaro Joaquin | 1484 | 0 | 0 | 0 | 0 | 0 | ½ | 0 | 0 | 0 | * | 0.5 | 2.25 | 44.5 | -72.8 | 1234 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Ponce Perez, Martin RoyCHI+142.88.0 pts · #1
- 2Toro Medina, Mathias AlexanderCHI+47.66.0 pts · #2
- 3Moreira Roldan, LeonardoCHI-4.84.5 pts · #5
- 1Herrera Catrilef, AlisonCHI-96.83.5 pts · #8
- 2Alvarez Saldivia, Alvaro JoaquinCHI-72.80.5 pts · #10
- 3Lara Martinez, Gabriel NehemiasCHI-16.03.5 pts · #9
- R6+150 Elo gap
- R5+119 Elo gap
- R6+114 Elo gap