XX CAMPEONATO SUDAMERICANO DE AJEDREZ SUB-20 ABSOLUTO GUAYAQUIL-ECUADOR
SwissStandard
50 players participated in this 9-round tournament, held from 20 Oct 2025 to 26 Oct 2025 in Guayaquil, Ecuador. 13 titled players from 8 federations. Top 10 Elo average was 2288, and top seed was Kaua Marques Silva (🇧🇷 BRA, FM, 2364).
Christopher Leonel Garzon Zapatanga (🇪🇨 ECU, IM, 2204) won with 7.0/9, ahead of Santiago de Jesus Casares Ugueto (6.5) and Mauricio Emmanuel Marrujo Pardo (6.5). Garzon Zapatanga shared the lead from round 7 and broke clear in the final round.
The biggest upset came in round 1: Alex Leonardo Sanchez Velez (1685) beat Maveric Mayta Aiza (CM, 2198), a +513-point gap.
Location
🇪🇨Guayaquil, Ecuador
Dates
20 Oct 2025 → 26 Oct 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 9 rounds
Titled players · 13
IM×1
FM×8
CM×3
WGM×1
Federations · 8 represented
🇪🇨Ecuador×29
🇵🇪Peru×7
🇦🇷Argentina×2
🇧🇷Brazil×2
🇻🇪Venezuela×2
🇺🇾Uruguay×2
🇨🇴Colombia×2
🇨🇱Chile×2
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsIM Christopher Leonel Garzon Zapatanga led from R9; +0.5-point edge over the runner-up. Title race converged from 4 co-leaders at R4 to 1 by R9.
Co-leaders
20
6
2
4
5
8
2
6
1
R9–R9 · LEAD HELD
IM Christopher Leonel Garzon Zapatanga held the sole lead from R9 through R9 without losing it.
WIN STREAKS · 2 top finishers
FM Arturo Eduardo Caceres Benitez 4 wins (R5–R8)CM Maveric Mayta Aiza 5 wins (R3–R7)
R5 · LATE SURGE
FM Arturo Eduardo Caceres Benitez was #13 at R5, climbed to #2 over the final stretch.
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1IMChristopher Leonel Garzon Zapatanga | * | — | ½ | — |
| 2FMArturo Eduardo Caceres Benitez | — | * | — | — |
| 3CMMaveric Mayta Aiza | ½ | — | * | ½ |
| 4FMMauricio Emmanuel Marrujo Pardo | — | — | ½ | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Garzon Zapatanga, Christopher LeonelIM | 2204 | ECU | +28B | =16N | =9B | +23N | +15B | =8N | +22B | =7N | +10N | 7.0 | 43.5 | 48.0 | 36.25 | 2304 | +35.8 |
| 2 | Casares Ugueto, Santiago de JesusFM | 2163 | VEN | +36B | =9N | +14B | +4N | =8B | =22N | =3N | +12B | =5N | 6.5 | 46.0 | 50.0 | 35.25 | 2368 | +104.4 |
| 3 | Marrujo Pardo, Mauricio EmmanuelFM | 2353 | CHI | +23B | +11N | +6B | =8N | =22B | =12N | =2B | +15N | =7B | 6.5 | 45.5 | 50.0 | 35.75 | 2334 | 0.0 |
| 4 | Silva, Kaua MarquesFM | 2364 | BRA | =30N | +37B | +17N | −2B | +9B | +6N | −7B | +22N | +15B | 6.5 | 44.0 | 47.5 | 32.50 | 2264 | -13.0 |
| 5 | Caceres Benitez, Arturo EduardoFM | 2326 | PAR | +38B | −6N | +16B | −9N | +23B | +26N | +18B | +8N | =2B | 6.5 | 44.0 | 47.5 | 31.75 | 2207 | -18.6 |
| 6 | Badillo Ramos, Steve | 2016 | ECU | +44N | +5B | −3N | +25B | =12N | −4B | +17N | +24B | +19N | 6.5 | 43.5 | 46.0 | 30.50 | 2272 | +60.0 |
| 7 | Mayta Aiza, MavericCM | 2198 | BOL | −37N | =29B | +39N | +17B | +32N | +13B | +4N | =1B | =3N | 6.5 | 42.0 | 45.5 | 33.00 | 2174 | +6.8 |
| 8 | Reyes Zavaleta, Cristhian YamilFM | 2209 | PER | +35N | +27B | +13N | =3B | =2N | =1B | =10N | −5B | +12N | 6.0 | 47.0 | 51.0 | 31.50 | 2239 | +18.5 |
| 9 | Pianchiche Acero,Miyamu NilluCM | 1941 | ECU | +49N | =2B | =1N | +5B | −4N | +24B | −12B | +18N | +14B | 6.0 | 46.0 | 47.0 | 28.75 | 2337 | +151.6 |
| 10 | Montano Velasco, Matias Khaleb | 2071 | ECU | +40B | +48N | =22B | =12B | =13N | +14N | =8B | +11N | −1B | 6.0 | 41.5 | 42.5 | 25.25 | 2207 | +60.0 |
| 11 | Huallpa Fernandez, Hector Manuel | 2059 | PER | +42N | −3B | +35N | −13B | =33N | +30B | +20N | −10B | +25B | 5.5 | 39.0 | 42.5 | 23.00 | 1983 | -20.8 |
| 12 | Francisco Guecamburu, Candela BeWGM | 2268 | ARG | +34B | =20N | +26B | =10N | =6B | =3B | +9N | −2N | −8B | 5.0 | 47.0 | 51.0 | 26.50 | 2123 | -30.2 |
| 13 | Alarcon Vega, Icker Aldair | 1887 | ECU | +15B | +18N | −8B | +11N | =10B | −7N | =14B | +16N | F | 5.0 | 44.0 | 48.5 | 26.00 | 2245 | +138.4 |
| 14 | Jaque Gutierrez, MatiasFM | 2261 | CHI | +33N | =17B | −2N | +30B | +20N | −10B | =13N | +21B | −9N | 5.0 | 42.5 | 46.5 | 23.00 | 2024 | -48.8 |
| 15 | Reyes Zavaleta, Fabian RicardoFM | 2311 | PER | −13N | +39B | +34N | +27B | −1N | +38B | +19N | −3B | −4N | 5.0 | 42.0 | 45.5 | 20.50 | 2110 | -37.6 |
| 16 | Vargas Sotelo, Victor | 1980 | ECU | +47N | =1B | −5N | =24B | +25N | −19B | +33N | −13B | +32N | 5.0 | 40.5 | 41.5 | 19.25 | 2015 | +8.4 |
| 17 | Casares Contreras, Jose Gabriel | 1963 | VEN | +46B | =14N | −4B | −7N | +37N | +32B | −6B | =31N | +35B | 5.0 | 40.0 | 41.5 | 17.50 | 1972 | +3.0 |
| 18 | Moro Saidon, Gonzalo | 2129 | ARG | +29N | −13B | +33N | =32B | =38N | +21B | −5N | −9B | +30N | 5.0 | 39.0 | 42.5 | 21.25 | 1978 | -31.6 |
| 19 | Kulik, Nicolas | 2089 | URU | =31B | =25N | +28B | =38N | =26B | +16N | −15B | +34N | −6B | 5.0 | 38.0 | 41.5 | 21.75 | 1965 | -48.0 |
| 20 | Guerrero Cajeca, Matias Israel | 2002 | ECU | +43B | =12B | +24N | −22N | −14B | +28N | −11B | =25N | +31B | 5.0 | 37.5 | 41.0 | 21.25 | 2027 | +11.5 |
| 21 | Martello, Benjamin | 2018 | URU | +41B | −22N | −25B | +36N | +35B | −18N | +31B | −14N | +34B | 5.0 | 35.0 | 38.5 | 19.50 | 1933 | -30.4 |
| 22 | Ribeiro, Matheus Mendes DominguesFM | 2339 | BRA | +32N | +21B | =10N | +20B | =3N | =2B | −1N | −4B | F | 4.5 | 47.5 | 51.5 | 23.50 | 2182 | -27.0 |
| 23 | Giler Moncayo,Boris Antonio | 1906 | ECU | −3N | +40B | +37N | −1B | −5N | =33B | +29N | =32B | =24N | 4.5 | 40.5 | 44.0 | 17.75 | 1970 | +20.0 |
| 24 | Cabiativa, Juan Esteban | 2244 | COL | =25B | +31N | −20B | =16N | +34B | −9N | +26B | −6N | =23B | 4.5 | 40.0 | 44.0 | 19.50 | 1944 | -124.0 |
| 25 | Morales Risco, Hugo Alexander | 1733 | ECU | =24N | =19B | +21N | −6N | −16B | +42B | +38N | =20B | −11N | 4.5 | 40.0 | 43.5 | 19.25 | 1981 | +103.6 |
| 26 | Levano Loayza, Adriano JaffetCM | 2083 | PER | =39N | +30B | −12N | +29B | =19N | −5B | −24N | =42B | +33N | 4.5 | 37.0 | 40.5 | 18.50 | 1964 | -35.3 |
| 27 | Sozoranga Barahona,Jordy Alexander | 1941 | ECU | +45B | −8N | +36B | −15N | =28B | −31N | −35B | +40N | +39B | 4.5 | 34.5 | 36.5 | 15.25 | 1775 | -52.5 |
| 28 | Flores Medina, Alexander Hiroki | 1701 | ECU | −1N | +47B | −19N | +45B | =27N | −20B | −30N | +37B | +42N | 4.5 | 34.5 | 35.5 | 12.25 | 1819 | +36.4 |
| 29 | Peralta Macas, Santiak Emanuel | 1672 | ECU | −18B | =7N | +50B | −26N | −31B | +46N | −23B | +47N | +41B | 4.5 | 30.5 | 31.5 | 10.25 | 1808 | +50.8 |
| 30 | Hernandez Serrano, Cristhian Daniel | 1925 | COL | =4B | −26N | +31B | −14N | +39B | −11N | +28B | =35N | −18B | 4.0 | 39.0 | 42.5 | 17.25 | 1910 | -5.2 |
| 31 | Valdiviezo Garcia, Angel Mathias | 1657 | ECU | =19N | −24B | −30N | +44B | +29N | +27B | −21N | =17B | −20N | 4.0 | 37.5 | 40.0 | 16.50 | 1869 | +84.8 |
| 32 | Orozco Aguilera, Pablo | 1905 | ECU | −22B | +41N | +48B | =18N | −7B | −17N | +39B | =23N | −16B | 4.0 | 37.5 | 38.5 | 12.75 | 1881 | -8.6 |
| 33 | Reyes Zavaleta, Sergio Gabriel | 1778 | PER | −14B | +43N | −18B | +41N | =11B | =23N | −16B | +36N | −26B | 4.0 | 37.0 | 40.5 | 16.00 | 1865 | +25.7 |
| 34 | Reyes Zavaleta, Diego Alexander | 1882 | PER | −12N | +44B | −15B | +40N | −24N | +36B | +37N | −19B | −21N | 4.0 | 35.5 | 38.0 | 13.50 | 1899 | -0.4 |
| 35 | Cruz Reyes, Nick | 1721 | ECU | −8B | +46N | −11B | +47N | −21N | =41B | +27N | =30B | −17N | 4.0 | 35.0 | 36.0 | 10.75 | 1802 | +30.0 |
| 36 | Banchon Crespo, Bruno Xavier | 1673 | ECU | −2N | +49B | −27N | −21B | +47N | −34N | +43B | −33B | +38N | 4.0 | 32.0 | 33.0 | 9.00 | 1746 | +18.4 |
| 37 | Sanchez Velez, Alex Leonardo | 1685 | ECU | +7B | −4N | −23B | +48N | −17B | +40N | −34B | −28N | =43B | 3.5 | 38.0 | 39.0 | 12.75 | 1709 | -1.2 |
| 38 | Coaquira Gonzales, Oscar Adriano | 1904 | PER | −5N | +42B | +45N | =19B | =18B | −15N | −25B | =41N | −36B | 3.5 | 37.0 | 39.0 | 12.25 | 1794 | -41.2 |
| 39 | Giler Moncayo, Isaac Guillermo | 1645 | ECU | =26B | −15N | −7B | +46N | −30N | +47B | −32N | +44B | −27N | 3.5 | 32.5 | 33.5 | 7.25 | 1748 | +30.0 |
| 40 | Ochoa Ramirez, Deckert Rothwell | 1632 | ECU | −10N | −23N | +43B | −34B | +45N | −37B | =41N | −27B | +46N | 3.5 | 31.5 | 33.0 | 8.75 | 1615 | -16.4 |
| 41 | Valverde Suarez, Aaron Josue | 1627 | ECU | −21N | −32B | +49N | −33B | +50B | =35N | =40B | =38B | −29N | 3.5 | 29.5 | 30.5 | 7.50 | 1680 | +16.0 |
| 42 | Tituana Quizhpi, Cristopher Javier | 1632 | ECU | −11B | −38N | −47B | +43N | +48B | −25N | +46B | =26N | −28B | 3.5 | 28.5 | 29.5 | 8.25 | 1596 | -25.6 |
| 43 | Correa Mateo, Edward Mathias | 1543 | ECU | −20N | −33B | −40N | −42B | +44N | +45B | −36N | +48B | =37N | 3.5 | 28.0 | 29.0 | 7.25 | 1475 | -23.2 |
| 44 | Jaramillo Lopez, Bryan Alberto | 1589 | ECU | −6B | −34N | =46B | −31N | −43B | +48N | +49B | −39N | F | 2.5 | 25.0 | 25.0 | 2.75 | 1289 | -73.6 |
| 45 | De Mora Flores, Leonidas Zhujov | 0 | ECU | −27N | F | −38B | −28N | −40B | −43N | =48B | =49N | +47B | 2.0 | 22.5 | 22.5 | 2.00 | 1434 | 0.0 |
| 46 | Tapia Olivos, Richard Andres | 1441 | ECU | −17N | −35B | =44N | −39B | +49N | −29B | −42N | F | −40B | 1.5 | 27.5 | 27.5 | 2.25 | 1253 | -39.2 |
| 47 | Morales Balarezo, Jose Adrian | 1521 | ECU | −16B | −28N | +42N | −35B | −36B | −39N | F | −29B | −45N | 1.0 | 31.0 | 31.0 | 3.50 | 1400 | -33.2 |
| 48 | Luspa Ramirez, Jeremy Ariel | 0 | ECU | F | −10B | −32N | −37B | −42N | −44B | =45N | −43N | =49B | 1.0 | 26.0 | 26.0 | 1.50 | 937 | 0.0 |
| 49 | Toapanta Lara, Lian Andahir | 1416 | ECU | −9B | −36N | −41B | −50N | −46B | F | −44N | =45B | =48N | 1.0 | 21.5 | 21.5 | 1.50 | 898 | 0.0 |
| 50 | Ruiz Zurita, Cesar | 1933 | ECU | F | F | −29N | +49B | −41N | F | F | F | F | 1.0 | 9.0 | 9.0 | 1.00 | 845 | -33.6 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Pianchiche Acero,Miyamu NilluCMECU+151.66.0 pts · #19
- 2Alarcon Vega, Icker AldairECU+138.45.0 pts · #20
- 3Casares Ugueto, Santiago de JesusFMVEN+104.46.5 pts · #5
Top rating losers
- 1Cabiativa, Juan EstebanCOL-124.04.5 pts · #26
- 2Jaramillo Lopez, Bryan AlbertoECU-73.62.5 pts · #46
- 3Sozoranga Barahona,Jordy AlexanderECU-52.54.5 pts · #34
Biggest upsets
- R1+513 Elo gap
- R1+424 Elo gap
- R4+385 Elo gap