Festival Sudamericano de la Juventud 2025 - Sub 16 Fem Ajedrez Clasico
Open SwissStandard
37 players participated in this 9-round tournament, held from 06 Dec 2025 to 11 Dec 2025 in Cali - VAL, Colombia. 8 titled players from 8 federations. Top 10 Elo average was 1871, and top seed was Dayana Nievevska Torres Ccahuay (🇵🇪 PER, WFM, 1905).
Odalys Lisbeth Calderon Guerra (🇪🇨 ECU, 1692) won with 7.0/9, ahead of Ilany Marjorie Tapia Morocho (6.5) and Fiorella Allegra Mayeregger Gonzalez (6.5). Calderon Guerra clinched sole first place in the final round.
The biggest upset came in round 1: Melyssa Alejandra Cortes Diaz (1645) beat Darling Gaspar Guevara (WFM, 1885), a +240-point gap.
Location
🇨🇴Cali - VAL, Colombia
Dates
06 Dec 2025 → 11 Dec 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 9 rounds
Titled players · 8
WFM×3
WCM×5
Federations · 8 represented
🇨🇴Colombia×16
🇵🇪Peru×5
🇪🇨Ecuador×5
🇨🇱Chile×4
🇻🇪Venezuela×2
🇵🇾Paraguay×2
🇺🇾Uruguay×1
🇦🇷Argentina×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 9 roundsOdalys Lisbeth Calderon Guerra led from R9; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R9.
Co-leaders
17
8
4
2
2
2
1
4
1
Calderon Guerra7Tapia Morocho6.5Mayeregger Gonzalez6.5Carvajal Mendoza6Quevedo Bonilla6Paredes Minaya6
R9 · LEADER CHANGE11 Dec
Odalys Lisbeth Calderon Guerra takes the sole lead (7.0/9).
R3 · HEAD-TO-HEAD · WINNER VS 2ND
Odalys Lisbeth Calderon Guerra beat WCM Ilany Marjorie Tapia Morocho (White).
WIN STREAKS · 2 top finishers
Odalys Lisbeth Calderon Guerra 3 wins (R1–R3)WCM Fiorella Allegra Mayeregger Gonzalez 4 wins (R1–R4)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Odalys Lisbeth Calderon Guerra | * | 1 | 0 | 1 |
| 2WCMIlany Marjorie Tapia Morocho | 0 | * | ½ | 1 |
| 3WCMFiorella Allegra Mayeregger Gonzalez | 1 | ½ | * | 0 |
| 4Maria Belen Carvajal Mendoza | 0 | 0 | 1 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 | R9 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Calderon Guerra,Odalys Lisbeth | 1692 | ECU | +32N | +17B | +2B | −3N | +15B | +13B | =8N | =9N | +4B | 7.0 | 44.5 | 47.0 | 35.00 | 2066 | +155.2 |
| 2 | Tapia Morocho, Ilany MarjorieWCM | 1898 | ECU | +18N | +4B | −1N | +9N | =5B | =16B | +13N | +8B | =3N | 6.5 | 46.0 | 50.5 | 35.00 | 1976 | +38.8 |
| 3 | Mayeregger Gonzalez, Fiorella AllegraWCM | 1879 | PAR | +35B | +19N | +10B | +1B | =13N | =8B | +14N | −4N | =2B | 6.5 | 45.0 | 47.0 | 32.50 | 1950 | +36.4 |
| 4 | Carvajal Mendoza, Maria Belen | 1830 | CHI | +25B | −2N | +29B | +10N | −8N | +21B | +16N | +3B | −1N | 6.0 | 43.5 | 46.5 | 27.50 | 1825 | +4.8 |
| 5 | Quevedo Bonilla, Paula ThalianaWCM | 1834 | COL | +28N | +37B | −8N | +31B | =2N | −14B | =19N | +18B | +9B | 6.0 | 38.0 | 38.5 | 22.50 | 1864 | +15.2 |
| 6 | Torres Puentes, Camila | 1642 | COL | −9B | −25N | +23B | +32N | =19N | +30B | +17N | =15B | +14N | 6.0 | 35.0 | 37.5 | 23.75 | 1826 | +75.6 |
| 7 | Paredes Minaya, Alyssa Christina Lucia | 1697 | PER | +29B | −13N | =25B | −22N | +20N | +26B | +31N | =14B | +11B | 6.0 | 34.5 | 37.5 | 23.75 | 1767 | +32.8 |
| 8 | Torres Ccahuay, Dayana NievevskaWFM | 1905 | PER | +22B | +11N | +5B | −13N | +4B | =3N | =1B | −2N | =10B | 5.5 | 48.0 | 52.5 | 31.50 | 1871 | -12.8 |
| 9 | Acuna Alarcon, Claudia MicaelaWCM | 1883 | PER | +6N | =16B | +17N | −2B | =12N | +11N | +15B | =1B | −5N | 5.5 | 46.0 | 50.5 | 29.50 | 1886 | +4.2 |
| 10 | Cortes Diaz, Melyssa Alejandra | 1645 | COL | +12N | +14B | −3N | −4B | +30N | −17B | +21N | +16B | =8N | 5.5 | 42.0 | 45.0 | 25.25 | 1857 | +100.4 |
| 11 | Veliz, Daira IsisWCM | 1822 | ARG | +36N | −8B | +21N | +20B | =14N | −9B | +12N | +13B | −7N | 5.5 | 41.5 | 43.0 | 23.50 | 1806 | -0.8 |
| 12 | Gaspar Guevara, DarlingWFM | 1885 | PER | −10B | +34N | −18B | +33N | =9B | +22N | −11B | +19N | +17B | 5.5 | 37.0 | 39.0 | 20.75 | 1774 | -40.8 |
| 13 | Maravi Ceron, AymeWFM | 1865 | PER | +21N | +7B | +20N | +8B | =3B | −1N | −2B | −11N | =15N | 5.0 | 46.5 | 51.0 | 26.25 | 1789 | -30.0 |
| 14 | Castro Munoz, Julieta | 1838 | CHI | +27B | −10N | +35B | +18N | =11B | +5N | −3B | =7N | −6B | 5.0 | 43.5 | 45.5 | 21.75 | 1748 | -41.2 |
| 15 | Escobar Rodriguez, Ana Sofia | 1859 | VEN | +26N | −20B | +16N | +19B | −1N | +31B | −9N | =6N | =13B | 5.0 | 40.5 | 43.5 | 21.00 | 1823 | -12.4 |
| 16 | Fernandes, Beatriz | 1756 | BRA | +24B | =9N | −15B | +25N | +22B | =2N | −4B | −10N | =18B | 4.5 | 41.5 | 45.0 | 20.25 | 1709 | -18.4 |
| 17 | Reyes Mayorca, Catherine Sofia | 1865 | VEN | +33B | −1N | −9B | =29N | +25B | +10N | −6B | +23N | −12N | 4.5 | 40.0 | 42.5 | 17.00 | 1663 | -87.6 |
| 18 | Chapeton Silva, Isabella | 1648 | COL | −2B | +27N | +12N | −14B | −21N | +32B | +24B | −5N | =16N | 4.5 | 39.5 | 42.0 | 17.75 | 1682 | +10.0 |
| 19 | Herrera Catrilef, Alison | 1754 | CHI | +30N | −3B | +37N | −15N | =6B | +29N | =5B | −12B | =21N | 4.5 | 39.5 | 40.0 | 14.75 | 1656 | -39.6 |
| 20 | Garcia Rojas, Ana Maria | 0 | COL | +23B | +15N | −13B | −11N | −7B | −24N | +25B | +36N | =22B | 4.5 | 37.5 | 39.0 | 16.25 | 1668 | 0.0 |
| 21 | Palatte Murillo, Ivonne Leonella | 1587 | ECU | −13B | +24N | −11B | +37N | +18B | −4N | −10B | +32N | =19B | 4.5 | 37.5 | 38.0 | 13.75 | 1617 | +11.6 |
| 22 | Miranda Iubini, Noa | 1653 | CHI | −8N | =28B | +30N | +7B | −16N | −12B | =26N | +29B | =20N | 4.5 | 36.0 | 39.0 | 17.75 | 1655 | -0.8 |
| 23 | Martinez Campos, Rita Hayelen | 1676 | PAR | −20N | =31B | −6N | +27B | −26N | =28B | +30N | −17B | +29N | 4.0 | 31.5 | 34.5 | 12.75 | 1596 | -35.6 |
| 24 | Pirachican Gonzalez, Sara | 1469 | COL | −16N | −21B | F | −30B | +36N | +20B | −18N | +26B | +31N | 4.0 | 29.0 | 29.0 | 12.50 | 1542 | +24.4 |
| 25 | De Leon Villarreal, Gabriela | 1501 | COL | −4N | +6B | =7N | −16B | −17N | =33B | −20N | +30B | =26N | 3.5 | 38.0 | 40.5 | 15.00 | 1629 | +45.6 |
| 26 | Fernandez Noriega, Adriana Sofia | 1546 | COL | −15B | −29N | =27B | +34N | +23B | −7N | =22B | −24N | =25B | 3.5 | 33.5 | 35.5 | 11.75 | 1468 | -35.2 |
| 27 | Guaman Cabrera, Victoria Rafaela | 1545 | ECU | −14N | −18B | =26N | −23N | +37B | +34B | =29N | −31B | =28N | 3.5 | 28.5 | 29.0 | 7.50 | 1398 | -54.4 |
| 28 | Costabel, Emma | 1534 | URU | −5B | =22N | +34B | −35N | −29B | =23N | −32B | +33N | =27B | 3.5 | 28.0 | 30.0 | 10.50 | 1525 | -7.2 |
| 29 | Ortiz Noguera, Samantha | 1455 | ECU | −7N | +26B | −4N | =17B | +28N | −19B | =27B | −22N | −23B | 3.0 | 36.5 | 40.0 | 11.00 | 1554 | +33.6 |
| 30 | Gomez Solorzano, Marianne | 1465 | COL | −19B | +33N | −22B | +24N | −10B | −6N | −23B | −25N | +37B | 3.0 | 34.5 | 35.0 | 7.00 | 1422 | -20.0 |
| 31 | Restrepo Cifuentes, Luciana | 1690 | COL | =34B | =23N | +32B | −5N | F | −15N | −7B | +27N | −24B | 3.0 | 33.0 | 35.0 | 9.00 | 1489 | -62.4 |
| 32 | Calvo Castillo, Juliana | 0 | COL | −1B | F | −31N | −6B | +33B | −18N | +28N | −21B | =34N | 2.5 | 33.0 | 33.0 | 7.00 | 1464 | 0.0 |
| 33 | Ruiz Ramirez, Juana Valentina | 1572 | COL | −17N | −30B | F | −12B | −32N | =25N | +37B | −28B | +36N | 2.5 | 25.5 | 26.0 | 3.75 | 1428 | -48.8 |
| 34 | Garcia Pava, Carol Eliana | 0 | COL | =31N | −12B | −28N | −26B | F | −27N | −36B | +37N | =32B | 2.0 | 23.5 | 23.5 | 3.25 | 1213 | 0.0 |
| 35 | Rendon Martinez, Isabela | 1628 | COL | −3N | +36B | −14N | +28B | F | F | F | F | F | 2.0 | 19.5 | 19.5 | 5.00 | 1680 | +9.6 |
| 36 | Garay Tocora, Juliana | 1469 | COL | −11B | −35N | F | F | −24B | =37N | +34N | −20B | −33B | 1.5 | 23.5 | 23.5 | 2.25 | 823 | -50.4 |
| 37 | Pena Marquez, Juanita Sofia | 0 | COL | F | −5N | −19B | −21B | −27N | =36B | −33N | −34B | −30N | 0.5 | 27.5 | 27.5 | 0.75 | 1181 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Calderon Guerra,Odalys LisbethECU+155.27.0 pts · #3
- 2Cortes Diaz, Melyssa AlejandraCOL+100.45.5 pts · #5
- 3Torres Puentes, CamilaCOL+75.66.0 pts · #12
Top rating losers
- 1Reyes Mayorca, Catherine SofiaVEN-87.64.5 pts · #13
- 2Restrepo Cifuentes, LucianaCOL-62.43.0 pts · #33
- 3Guaman Cabrera, Victoria RafaelaECU-54.43.5 pts · #34
Biggest upsets
- R1+240 Elo gap
- R3+237 Elo gap
- R7+223 Elo gap