XXXI ABIERTO DE AJEDREZ Pablo Villarreal in Memoriam IRT SUB 2400
Open SwissStandard
40 players participated in this 7-round tournament, held from 12 Dec 2025 to 14 Dec 2025 in Santa Rosa - La Pampa, Argentina. 4 titled players. Top 10 Elo average was 2045, and top seed was Diego Mussanti (🇦🇷 ARG, FM, 2219).
Diego Mussanti (🇦🇷 ARG, FM, 2219) won with 6.0/7, ahead of Facundo Quiroga (5.5) and Leandro Tobares (5.0). Mussanti shared the lead from round 4 and won solo starting round 5.
The biggest upset came in round 1: Armando Vesco (1520) beat Jose Ignacio Barrotto (1884), a +364-point gap.
Location
🇦🇷Santa Rosa - La Pampa, Argentina
Dates
12 Dec 2025 → 14 Dec 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 7 rounds
Titled players · 4
IM×1
FM×2
WFM×1
Federations · 1 represented
🇦🇷Argentina×37
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 7 roundsFM Diego Mussanti led from R5; +0.5-point edge over the runner-up. Title race converged from 4 co-leaders at R4 to 1 by R5.
Co-leaders
17
7
2
4
1
1
1
R5–R7 · LEAD HELD
FM Diego Mussanti held the sole lead from R5 through R7 without losing it.
R7 · HEAD-TO-HEAD · WINNER VS 2ND
FM Diego Mussanti drew with IM Facundo Quiroga (White).
R4–R6 · WIN STREAK
FM Diego Mussanti won 3 in a row (R4–R6).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1FMDiego Mussanti | * | ½ | — | — |
| 2IMFacundo Quiroga | ½ | * | ½ | — |
| 3WFMOriana Helena Tobares Dilascio | — | ½ | * | 1 |
| 4Carlos Pesce | — | — | 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Mussanti, DiegoFM | 2219 | ARG | +24B | +11N | =8B | +23N | +5B | +10N | =2B | 6.0 | 26.0 | 29.0 | 24.00 | 2261 | +8.4 |
| 2 | Quiroga, FacundoIM | 2183 | ARG | +12N | +13B | =10N | =4B | +17N | +3B | =1N | 5.5 | 28.0 | 31.5 | 24.00 | 2209 | +4.1 |
| 3 | Tobares, LeandroFM | 2128 | ARG | +20B | +15N | +6B | =5N | =10B | −2N | +14B | 5.0 | 27.5 | 31.0 | 21.00 | 2042 | -7.8 |
| 4 | Tobares Dilascio, Oriana HelenaWFM | 2087 | ARG | =22B | +33N | +7B | =2N | =14B | +6N | =8B | 5.0 | 27.5 | 29.0 | 20.25 | 2039 | -3.6 |
| 5 | Sanchez Laplace, Santiago | 1851 | ARG | +35N | +16B | +9N | =3B | −1N | =23N | +10B | 5.0 | 26.5 | 27.5 | 17.50 | 2076 | +41.8 |
| 6 | Pesce, Carlos | 1918 | ARG | +25N | +14B | −3N | +21B | +18N | −4B | +11N | 5.0 | 25.0 | 28.0 | 18.00 | 1951 | +10.0 |
| 7 | Barrotto, Jose Ignacio | 1884 | ARG | −33B | +35N | −4N | +27B | +21N | +18B | +12N | 5.0 | 20.5 | 21.5 | 15.00 | 1788 | -9.8 |
| 8 | Llanos, Joaquin | 2090 | ARG | +18N | +31B | =1N | −10B | =13N | +17B | =4N | 4.5 | 26.0 | 28.5 | 17.00 | 2017 | -7.2 |
| 9 | Frank, Mario | 2037 | ARG | +29B | =19N | −5B | +34N | −23B | +22N | +31B | 4.5 | 20.5 | 22.0 | 12.25 | 1841 | -27.4 |
| 10 | Arevalo, Santiago Martin | 2051 | ARG | +26N | +17B | =2B | +8N | =3N | −1B | −5N | 4.0 | 29.5 | 32.5 | 16.25 | 2034 | +0.8 |
| 11 | Ipuche, Andres | 1799 | ARG | +27N | −1B | +12N | −14B | +19B | +16N | −6B | 4.0 | 26.5 | 29.5 | 14.50 | 1815 | +0.2 |
| 12 | Mena, Eugenio | 1617 | ARG | −2B | +32N | −11B | +36N | +15B | +19N | −7B | 4.0 | 24.5 | 25.5 | 11.00 | 1746 | +35.2 |
| 13 | Ampudia, Roberto | 1802 | ARG | +32B | −2N | +20B | =19N | =8B | =14N | =23B | 4.0 | 24.0 | 26.5 | 13.50 | 1860 | +10.2 |
| 14 | Sandoval Rojas, Brian | 1718 | ARG | +40B | −6N | +36B | +11N | =4N | =13B | −3N | 4.0 | 24.0 | 24.0 | 9.50 | 1873 | +32.4 |
| 15 | Gonzalez, Miguel Hector | 1560 | ARG | +28N | −3B | −18N | +25B | −12N | +27B | +26N | 4.0 | 21.5 | 24.5 | 12.00 | 1595 | +4.4 |
| 16 | Vera, Ruben Gabriel | 1673 | ARG | +36N | −5N | +33B | −17B | +26N | −11B | +29N | 4.0 | 20.0 | 21.0 | 8.50 | 1687 | +4.4 |
| 17 | Ruiz, Pablo Horacio | 1765 | ARG | +30B | −10N | +29B | +16N | −2B | −8N | =18B | 3.5 | 24.5 | 27.0 | 11.25 | 1804 | +1.0 |
| 18 | Barrera, Ricardo | 1607 | ARG | −8B | +39N | +15B | +31N | −6B | −7N | =17N | 3.5 | 24.5 | 24.5 | 8.25 | 1764 | +19.8 |
| 19 | Rossi, Juan | 1764 | ARG | +38N | =9B | =21N | =13B | −11N | −12B | +30N | 3.5 | 22.5 | 23.5 | 9.50 | 1635 | -18.2 |
| 20 | Vega, Hector | 1610 | ARG | −3N | +28B | −13N | =30B | +24B | −21N | +32B | 3.5 | 21.0 | 23.5 | 9.75 | 1639 | +2.4 |
| 21 | Llanos, Mauro | 1665 | ARG | F | +37N | =19B | −6N | −7B | +20B | +25N | 3.5 | 21.0 | 21.0 | 9.25 | 1773 | +17.2 |
| 22 | Fernandez, Antonio Omar | 1607 | ARG | =4N | −23B | =30N | =28B | +35N | −9B | +37N | 3.5 | 19.0 | 20.0 | 7.25 | 1781 | +18.2 |
| 23 | Ranalli, Emmanuel Eduardo | 1853 | ARG | F | +22N | F | −1B | +9N | =5B | =13N | 3.0 | 24.5 | 24.5 | 12.50 | 1975 | +15.2 |
| 24 | Ponce, Mario | 1623 | ARG | −1N | +27B | =25N | =26B | −20N | =30B | =33N | 3.0 | 21.0 | 22.5 | 8.00 | 1512 | -17.4 |
| 25 | Ponce, Sofia | 1547 | ARG | −6B | +40N | =24B | −15N | +32B | =31N | −21B | 3.0 | 20.5 | 20.5 | 5.25 | 1544 | -6.0 |
| 26 | Alarcon Albando, Tahiel | 1603 | ARG | −10B | =30N | +37B | =24N | −16B | +34N | −15B | 3.0 | 19.0 | 20.0 | 5.25 | 1608 | -4.4 |
| 27 | FIDE 20075146 | 0 | — | −11B | −24N | +39B | −7N | +38B | −15N | +36B | 3.0 | 18.0 | 18.0 | 2.00 | 917 | 0.0 |
| 28 | Bengolea, Valentino | 0 | ARG | −15B | −20N | +35B | =22N | −31B | =37N | +38B | 3.0 | 15.5 | 16.5 | 4.25 | 1476 | 0.0 |
| 29 | Vaschetti, Guillermo | 1582 | ARG | −9N | +38B | −17N | +40B | F | +36N | −16B | 3.0 | 14.0 | 14.0 | 2.00 | 1007 | -14.4 |
| 30 | Gerassi, Tomas | 0 | ARG | −17N | =26B | =22B | =20N | =34B | =24N | −19B | 2.5 | 20.0 | 21.5 | 7.25 | 1545 | 0.0 |
| 31 | Malvicino, Juan Carlos | 1792 | ARG | +39B | −8N | F | −18B | +28N | =25B | −9N | 2.5 | 18.5 | 18.5 | 4.50 | 1498 | -27.8 |
| 32 | Huenchul, Emiliano Victor | 1454 | ARG | −13N | −12B | +38N | =37B | −25N | +35B | −20N | 2.5 | 16.5 | 17.5 | 2.50 | 1409 | -14.8 |
| 33 | Vesco, Armando | 1520 | ARG | +7N | −4B | −16N | F | F | F | =24B | 1.5 | 17.0 | 17.0 | 6.50 | 1688 | +26.4 |
| 34 | Iturrieta Rodriguez, Alejandro | 1558 | ARG | F | F | F | −9B | =30N | −26B | +35N | 1.5 | 14.0 | 14.0 | 2.25 | 1550 | -6.0 |
| 35 | Martin, Maria De Los Angeles | 1465 | ARG | −5B | −7B | −28N | +39N | −22B | −32N | −34B | 1.0 | 20.5 | 20.5 | 0.00 | 867 | -54.8 |
| 36 | FIDE 20075189 | 0 | — | −16B | F | −14N | −12B | +39N | −29B | −27N | 1.0 | 18.0 | 18.0 | 0.00 | 848 | 0.0 |
| 37 | Olguin, Adolfo | 1573 | ARG | F | −21B | −26N | =32N | F | =28B | −22B | 1.0 | 15.5 | 15.5 | 2.75 | 1260 | -28.8 |
| 38 | Marin, Iker | 0 | ARG | −19B | −29N | −32B | F | −27N | +39B | −28N | 1.0 | 15.0 | 15.0 | 0.00 | 800 | 0.0 |
| 39 | FIDE 20075154 | 0 | — | −31N | −18B | −27N | −35B | −36B | −38N | F | 0.0 | 12.0 | 12.0 | 0.00 | 821 | 0.0 |
| 40 | Ruff Otto, Uriel Elias | 0 | ARG | −14N | −25B | F | −29N | F | F | F | 0.0 | 11.5 | 11.5 | 0.00 | 816 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Sanchez Laplace, SantiagoARG+41.85.0 pts · #5
- 2Mena, EugenioARG+35.24.0 pts · #14
- 3Sandoval Rojas, BrianARG+32.44.0 pts · #26
Top rating losers
- 1Martin, Maria De Los AngelesARG-54.81.0 pts · #36
- 2Olguin, AdolfoARG-28.81.0 pts · #33
- 3Malvicino, Juan CarlosARG-27.82.5 pts · #32
Biggest upsets
- R1+364 Elo gap
- R7+200 Elo gap
- R3+186 Elo gap