Semifinal Campeonato Argentino Amateurs 2025 - IRT Sub 2300 - Alfa Computacion
26 players participated in this 6-round tournament, held from 08 Nov 2025 to 09 Nov 2025 in Cordoba - Cordoba, Argentina. 3 federations represented. Top 10 Elo average was 1898, and top seed was Pablo Jacobo (🇦🇷 ARG, 2245).
Marcelo Wilberger (🇵🇾 PAR, 1842) won with 4.5/6, ahead of Lucas Mansilla (4.5) and Lautaro Gaston Acosta (4.5). Wilberger won on tie-break after catching the field in the final round.
The biggest upset came in round 1: Lautaro Emanuel Torres (1570) beat Jesus Campos (1883), a +313-point gap.
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How it unfolded
Top 6 · 6 roundsTight race until R6; 3 players tied at 4.5/6, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 3 at the finish.
3 players finish on 4.5/6. Wilberger takes the title on Buchholz Cut1 (18.5).
Marcelo Wilberger drew with Lautaro Gaston Acosta (White).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Marcelo Wilberger | * | ½ | 1 | 0 |
| 2Lautaro Gaston Acosta | ½ | * | — | 0 |
| 3Lucas Mansilla | 0 | — | * | — |
| 4Pablo Jacobo | 1 | 1 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Wilberger, Marcelo | 1842 | PAR | +26B | +8N | =3B | +2N | −4B | +12N | 4.5 | 18.5 | 18.5 | 12.25 | 2006 | +25.6 |
| 2 | Mansilla, Lucas | 1883 | ARG | +10N | =6B | +7N | −1B | +11N | +19B | 4.5 | 16.5 | 18.5 | 12.25 | 1841 | -2.8 |
| 3 | Acosta, Lautaro Gaston | 1891 | ARG | +22N | +14B | =1N | +6B | +13N | −4B | 4.5 | 16.5 | 17.5 | 11.25 | 1960 | +9.0 |
| 4 | Jacobo, Pablo | 2245 | ARG | +9N | F | F | +20B | +1N | +3N | 4.0 | 13.5 | 13.5 | 13.50 | 2657 | +14.0 |
| 5 | Campos, Jesus | 1883 | VEN | −8B | −11N | +23B | +26N | +15B | +18N | 4.0 | 10.5 | 10.5 | 5.00 | 1793 | -7.6 |
| 6 | Piana, Claudio | 1660 | ARG | +21N | =2N | +14B | −3N | =17B | =11B | 3.5 | 15.5 | 17.0 | 8.00 | 1833 | +17.6 |
| 7 | Canello, Jose Luis | 1945 | ARG | +16B | =17N | −2B | −15N | +14B | +10N | 3.5 | 13.0 | 15.0 | 7.50 | 1819 | -16.2 |
| 8 | Torres, Lautaro Emanuel | 1570 | ARG | +5N | −1B | −12N | +9B | −10N | +20B | 3.0 | 16.5 | 18.0 | 8.50 | 1697 | +36.8 |
| 9 | Torero Navarro, Camilo Ernesto | 1649 | ARG | −4B | +24N | −13B | −8N | +26B | +25N | 3.0 | 11.0 | 11.0 | 1.50 | 1706 | +9.6 |
| 10 | Soria, Felipe | 1523 | ARG | −2B | +23N | −16B | =14N | +8B | −7B | 2.5 | 15.0 | 16.0 | 5.00 | 1601 | +12.4 |
| 11 | Piccolin Najera, Juan | 0 | ARG | F | +5B | +15N | F | −2B | =6N | 2.5 | 14.0 | 14.0 | 7.75 | 1861 | 0.0 |
| 12 | Luna, Pablo Damian | 1796 | ARG | F | =20N | +8B | F | +16N | −1B | 2.5 | 11.0 | 11.0 | 5.75 | 1729 | -12.0 |
| 13 | Pereyra Zenklusen, Ramiro | 0 | ARG | F | =25B | +9N | F | −3B | +17N | 2.5 | 10.0 | 10.0 | 5.25 | 1765 | 0.0 |
| 14 | Moreno, Alejandro Daniel | 1726 | ARG | +18B | −3N | −6N | =10B | −7N | =21B | 2.0 | 16.0 | 17.5 | 4.00 | 1433 | -27.0 |
| 15 | Richard, Patrick Jorge | 1937 | ARG | F | +19N | −11B | +7B | −5N | F | 2.0 | 14.0 | 14.0 | 5.50 | 1913 | +0.2 |
| 16 | Molina, Ernesto | 1647 | ARG | −7N | +21B | +10N | F | −12B | F | 2.0 | 12.0 | 12.0 | 4.00 | 1630 | -2.4 |
| 17 | Dotti, Fernando | 1829 | ARG | +24N | =7B | F | F | =6N | −13B | 2.0 | 10.5 | 10.5 | 4.50 | 1809 | +0.6 |
| 18 | Ledesma Fedrizzi, Juan Cruz | 0 | ARG | −14N | +22B | F | F | +20N | −5B | 2.0 | 8.5 | 8.5 | 2.50 | 1667 | 0.0 |
| 19 | Luna, Desiree | 1487 | ARG | F | −15B | +22N | F | +25B | −2N | 2.0 | 8.0 | 8.0 | 1.50 | 1738 | +44.8 |
| 20 | Allende, Felipe | 1477 | ARG | F | =12B | +25N | −4N | −18B | −8N | 1.5 | 12.0 | 12.0 | 1.75 | 1624 | +22.8 |
| 21 | Ruffa, Arturo | 0 | ARG | −6B | −16N | −24B | F | +22N | =14N | 1.5 | 9.5 | 9.5 | 2.00 | 1463 | 0.0 |
| 22 | Saura, Leandro Francisco | 1578 | ARG | −3B | −18N | −19B | +23N | −21B | F | 1.0 | 11.0 | 11.0 | 1.00 | 889 | -30.8 |
| 23 | Sosa, Noah Austin | 0 | ARG | −?N | −10B | −5N | −22B | F | +26N | 1.0 | 7.5 | 7.5 | 0.00 | 1387 | 0.0 |
| 24 | Veron, Fabrizio Isaias | 1445 | ARG | −17B | −9B | +21N | F | F | F | 1.0 | 7.0 | 7.0 | 1.50 | 944 | -12.8 |
| 25 | Tanus Mafud, Emilio | 1599 | ARG | F | =13N | −20B | F | −19N | −9B | 0.5 | 10.0 | 10.0 | 1.25 | 741 | -34.6 |
| 26 | Palacios, Roque | 1499 | ARG | −1N | F | F | −5B | −9N | −23B | 0.0 | 12.5 | 12.5 | 0.00 | 994 | -20.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Luna, DesireeARG+44.82.0 pts · #12
- 2Torres, Lautaro EmanuelARG+36.83.0 pts · #7
- 3Wilberger, MarceloPAR+25.64.5 pts · #1
- 1Tanus Mafud, EmilioARG-34.60.5 pts · #25
- 2Saura, Leandro FranciscoARG-30.81.0 pts · #23
- 3Moreno, Alejandro DanielARG-27.02.0 pts · #22
- R1+313 Elo gap
- R3+122 Elo gap
- R5+112 Elo gap