Sexto IRT SUB 1800 Club Cordillera 2025
33 players participated in this 5-round tournament, held on 19 Oct 2025 in Santiago, Chile. Top 10 Elo average was 1726, and top seed was Matias Marc Bustamante Chavez (🇨🇱 CHI, 1791).
Alfonso Veloso Kustera (🇨🇱 CHI, 0) won with 5.0/5, ahead of Alonso Igna Valdebenito Barra (4.0) and Mateo Marxav Figueroa Estay (4.0). Veloso Kustera shared the lead from round 4 and broke clear in the final round.
The biggest upset came in round 3: Javier Alonso Mejia Mora (1470) beat Carlos Jose Manasevich Tolosa (1633), a +163-point gap.
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How it unfolded
Top 6 · 5 roundsAlfonso Veloso Kustera led from R5; +1.0-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.
Alfonso Veloso Kustera never relinquished the lead after R5; final gap +1.0 over the runner-up.
Alfonso Veloso Kustera 5 wins (R1–R5)Mateo Marxav Figueroa Estay 3 wins (R1–R3)Alonso Igna Valdebenito Barra 4 wins (R1–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Alfonso Veloso Kustera | * | — | 1 | — |
| 2Mateo Marxav Figueroa Estay | — | * | 0 | 1 |
| 3Alonso Igna Valdebenito Barra | 0 | 1 | * | — |
| 4Andres Seguel Caro | — | 0 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Veloso Kustera, Alfonso | 0 | CHI | +23B | +10N | +9B | +11N | +2B | 5.0 | 13.0 | 15.0 | 15.00 | 1816 | 0.0 |
| 2 | Valdebenito Barra, Alonso Igna | 1712 | CHI | +30B | +17N | +12B | +3B | −1N | 4.0 | 14.5 | 15.5 | 10.50 | 2399 | +21.4 |
| 3 | Figueroa Estay, Mateo Marxav | 1722 | CHI | +21B | +20N | +4B | −2N | +12B | 4.0 | 13.5 | 15.5 | 11.50 | 1868 | +35.6 |
| 4 | Seguel Caro, Andres | 1701 | CHI | +29N | +28B | −3N | +6B | +9B | 4.0 | 11.5 | 12.5 | 8.50 | 1836 | +29.2 |
| 5 | Valencia Oyarzun, Mario Jose | 0 | CHI | −10B | +23N | +28B | +13N | +11B | 4.0 | 11.0 | 12.0 | 9.00 | 1727 | 0.0 |
| 6 | Tricot Wong, Francisco | 1666 | CHI | +8B | =7B | +24N | −4N | +19B | 3.5 | 13.5 | 15.5 | 9.75 | 1787 | +13.0 |
| 7 | Bustamante Chavez, Matias Marc | 1791 | CHI | +31B | =6N | +10B | −9N | +16B | 3.5 | 12.0 | 13.0 | 8.25 | 1814 | +3.6 |
| 8 | Coaguila Amesquita, Eduardo Enrique | 0 | CHI | −6N | +31N | +30B | =16B | +18N | 3.5 | 9.5 | 10.5 | 5.75 | 1626 | 0.0 |
| 9 | Cuadros Betancur, Christian | 1758 | CHI | +15N | +14B | −1N | +7B | −4N | 3.0 | 15.5 | 18.5 | 9.50 | 1849 | +9.6 |
| 10 | Araos Diaz, Constanza Paz | 1760 | CHI | +5N | −1B | −7N | +29B | +22N | 3.0 | 14.5 | 15.5 | 7.00 | 1608 | -6.8 |
| 11 | Orrego Ahumada, Herman | 1714 | CHI | +25N | +16B | +22N | −1B | −5N | 3.0 | 13.5 | 15.5 | 6.50 | 2319 | +20.4 |
| 12 | Pino Smythe, Maximiliano | 1635 | CHI | +26N | +24B | −2N | +22B | −3N | 3.0 | 12.0 | 14.0 | 6.00 | 1606 | -4.0 |
| 13 | Albayay Albornoz, Benjamin | 1646 | CHI | −22N | +29B | +15N | −5B | +26N | 3.0 | 11.0 | 12.0 | 6.00 | 2261 | +20.8 |
| 14 | Manasevich Tolosa, Carlos Jose | 1633 | CHI | +32B | −9N | −21B | +20N | +23B | 3.0 | 9.5 | 9.5 | 4.50 | 1491 | -22.8 |
| 15 | Acevedo Gonzalez, Juan Pablo | 1496 | CHI | −9B | +32N | −13B | +28N | +21B | 3.0 | 9.0 | 9.0 | 3.00 | 1500 | -0.4 |
| 16 | Nannig Buzeta, Cristobal | 1578 | CHI | +27B | −11N | +17B | =8N | −7N | 2.5 | 12.5 | 14.5 | 6.25 | 953 | -11.0 |
| 17 | Lincopi Bruch, Carlos Felipe | 0 | CHI | +18N | −2B | −16N | +24B | =25N | 2.5 | 11.0 | 13.0 | 5.50 | 1638 | 0.0 |
| 18 | Barra Otondo, Juan Jose | 1682 | CHI | −17B | +30N | =19B | +21N | −8B | 2.5 | 10.5 | 11.5 | 4.25 | 1749 | +8.4 |
| 19 | Quezada Quijada, Sofia | 1517 | CHI | −24N | +26B | =18N | +25B | −6N | 2.5 | 10.0 | 12.0 | 5.25 | 1554 | +5.6 |
| 20 | Acuna Rivera, Joaquin Emilio | 1620 | CHI | +33N | −3B | =25N | −14B | +29N | 2.5 | 10.0 | 10.0 | 2.00 | 1472 | -32.0 |
| 21 | Mejia Mora, Javier Alonso | 1470 | CHI | −3N | +33B | +14N | −18B | −15N | 2.0 | 12.5 | 12.5 | 3.00 | 1441 | -6.4 |
| 22 | Rospigliossi Georger, Franco Alonso | 0 | CHI | +13B | +?N | −11B | −12N | −10B | 2.0 | 12.0 | 12.0 | 3.00 | 1613 | 0.0 |
| 23 | Cadiz Vidal, Andres Felipe | 0 | CHI | −1N | −5B | +33N | +32B | −14N | 2.0 | 12.0 | 12.0 | 0.00 | 833 | 0.0 |
| 24 | Balart Armendariz, Francisco | 1758 | CHI | +19B | −12N | −6B | −17N | +28B | 2.0 | 11.5 | 12.5 | 3.50 | 1481 | -44.0 |
| 25 | Zuniga Subiabre, Martin Ignacio | 1456 | CHI | −11B | +27N | =20B | −19N | =17B | 2.0 | 10.5 | 12.5 | 4.50 | 1344 | -16.0 |
| 26 | Valdivieso Reyes, Juan Agustin | 0 | CHI | −12B | −19N | +?B | +31N | −13B | 2.0 | 9.5 | 9.5 | 1.00 | 1534 | 0.0 |
| 27 | Marquez Belandria, Leonardo Jose | 0 | CHI | −16N | −25B | −29N | +30N | +31B | 2.0 | 6.5 | 7.5 | 2.00 | 1420 | 0.0 |
| 28 | Gatica Cea, Carolina Ignacia | 0 | CHI | +?B | −4N | −5N | −15B | −24N | 1.0 | 13.0 | 13.0 | 0.00 | 1464 | 0.0 |
| 29 | Perez Rojas, Alonso | 1424 | CHI | −4B | −13N | +27B | −10N | −20B | 1.0 | 12.5 | 14.5 | 2.00 | 882 | -30.4 |
| 30 | Marchant Escobar, Leon | 1440 | CHI | −2N | −18B | −8N | −27B | +32N | 1.0 | 12.0 | 12.0 | 0.00 | 897 | -14.8 |
| 31 | Fernandez Caamano, Edison | 1561 | CHI | −7N | −8B | +32N | −26B | −27N | 1.0 | 11.0 | 11.0 | 0.00 | 992 | -8.4 |
| 32 | FIDE 3474895 | 0 | — | −14N | −15B | −31B | −23N | −30B | 0.0 | 9.0 | 10.0 | 0.00 | 733 | 0.0 |
| 33 | Bussenius Adolfssen, Sebastian | 0 | CHI | −20B | −21N | −23B | −?N | F | 0.0 | 6.5 | 6.5 | 0.00 | 787 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Figueroa Estay, Mateo MarxavCHI+35.64.0 pts · #2
- 2Seguel Caro, AndresCHI+29.24.0 pts · #6
- 3Valdebenito Barra, Alonso IgnaCHI+21.44.0 pts · #5
- 1Balart Armendariz, FranciscoCHI-44.02.0 pts · #19
- 2Acuna Rivera, Joaquin EmilioCHI-32.02.5 pts · #17
- 3Perez Rojas, AlonsoCHI-30.41.0 pts · #32
- R3+163 Elo gap
- R2+123 Elo gap