3er. Torneo Abierto "Amazonico" 2025
Open SwissStandard
57 players participated in this 7-round tournament, held from 26 Sept 2025 to 28 Sept 2025 in Cobija, Bolivia. 3 federations represented. Top 10 Elo average was 1819, and top seed was Juan Manuel Onarry (🇧🇴 BOL, 1996).
Ricardo Moura Da Silva (🇧🇷 BRA, 1934) won with 7.0/7, ahead of Ronaldo Manuel Abarca Torres (6.0) and Reginaldo Sousa Oliveira (5.5). Da Silva won solo starting round 6.
The biggest upset came in round 3: Edward Sanz Lucas (1679) beat Juan Manuel Onarry (1996), a +317-point gap.
Location
🇧🇴Cobija, Bolivia
Dates
26 Sept 2025 → 28 Sept 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 7 rounds
Federations · 3 represented
🇧🇴Bolivia×11
🇵🇪Peru×8
🇧🇷Brazil×7
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 7 roundsRicardo Moura Da Silva led from R6; +1.0-point edge over the runner-up. Title race converged from 3 co-leaders at R4 to 1 by R6.
Co-leaders
34
17
7
3
2
1
1
R6–R7 · LEAD HELD
Ricardo Moura Da Silva never relinquished the lead after R6; final gap +1.0 over the runner-up.
R6 · HEAD-TO-HEAD · WINNER VS 2ND
Ricardo Moura Da Silva beat Ronaldo Manuel Abarca Torres (White).
WIN STREAKS · 2 top finishers
Ricardo Moura Da Silva 7 wins (R1–R7)Ronaldo Manuel Abarca Torres 5 wins (R1–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Ricardo Moura Da Silva | * | 1 | — | — |
| 2Ronaldo Manuel Abarca Torres | 0 | * | — | — |
| 3Reginaldo Sousa Oliveira | — | — | * | 1 |
| 4Johan Raziel Rodriguez Barrientos | — | — | 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Da Silva, Ricardo Moura | 1934 | BRA | +37B | +18N | +11B | +15N | +4B | +2B | +6N | 7.0 | 30.0 | 33.0 | 33.00 | 2507 | +22.0 |
| 2 | Abarca Torres, Ronaldo Manuel | 1794 | PER | +54N | +50B | +8N | +6B | +30B | −1N | +4B | 6.0 | 27.0 | 28.0 | 21.00 | 1951 | +16.0 |
| 3 | Oliveira, Reginaldo Sousa | 1874 | BRA | +48N | +21B | −12N | +26B | +5N | =8B | +16N | 5.5 | 27.5 | 29.5 | 22.00 | 1811 | -6.4 |
| 4 | Hancco, Alex Sandro | 1765 | PER | +52N | +25B | +10N | +12B | −1N | +30B | −2N | 5.0 | 30.0 | 31.5 | 18.50 | 1739 | -5.6 |
| 5 | Rodriguez Barrientos, Johan Raziel | 1754 | BOL | +55B | +27N | =7B | +14N | −3B | +15N | =8B | 5.0 | 29.0 | 29.5 | 19.00 | 1812 | +13.7 |
| 6 | Sanz Lucas, Edward | 1679 | PER | +47N | +57B | +14B | −2N | +22N | +23B | −1B | 5.0 | 28.5 | 28.5 | 15.50 | 1783 | +13.6 |
| 7 | Mendoza Quispe, Yanfranco | 1537 | PER | +42N | +49B | =5N | =9B | =17N | =10B | +23N | 5.0 | 26.5 | 28.5 | 18.75 | 1715 | +35.6 |
| 8 | Torrico Castro, Raikonen Dairo | 1655 | BOL | +53B | +46N | −2B | +34N | +24B | =3N | =5N | 5.0 | 26.5 | 27.5 | 16.25 | 1682 | +4.0 |
| 9 | Oyola, Daniel | 1826 | BOL | +56B | +20N | −15B | =7N | +19B | +43N | =13B | 5.0 | 26.5 | 26.5 | 17.00 | 1511 | -48.4 |
| 10 | Gomez Berrocal, Leandro Rafael | 1558 | PER | +33B | +31N | −4B | +41N | =13B | =7N | +21B | 5.0 | 25.0 | 28.0 | 18.00 | 1554 | -1.2 |
| 11 | Souza , Neurismar Da Rocha | 1660 | BRA | +45N | +19B | −1N | +29B | −23N | +39B | +34N | 5.0 | 25.0 | 28.0 | 17.00 | 1134 | -3.4 |
| 12 | Martins Junior, Edmilton Araujo | 1671 | BRA | +51B | +29N | +3B | −4N | −21B | +27N | +36B | 5.0 | 25.0 | 27.0 | 18.00 | 1820 | +15.6 |
| 13 | De Avelar, Flavio Henrique | 1735 | BRA | +38N | +26B | −30N | +53B | =10N | +17B | =9N | 5.0 | 24.5 | 25.5 | 17.50 | 1827 | +7.4 |
| 14 | Onarry, Juan Manuel | 1996 | BOL | +39N | +22B | −6N | −5B | +28N | +35B | +30N | 5.0 | 23.5 | 26.5 | 16.50 | 916 | -66.8 |
| 15 | De Araujo, Antonio Marcos Diniz | 1636 | BRA | +40N | +23B | +9N | −1B | =16N | −5B | +47N | 4.5 | 28.5 | 31.0 | 16.75 | 1737 | +9.2 |
| 16 | Silva, Romildo das Chagas | 1784 | BRA | +44B | F | +38N | +27N | =15B | +21N | −3B | 4.5 | 24.0 | 27.0 | 16.25 | 1563 | -11.6 |
| 17 | Kohagura Arrunategui, Jose Andres Hideki | 1723 | PER | +28B | +34N | +32B | −30N | =7B | −13N | +24B | 4.5 | 23.5 | 26.5 | 16.00 | 1443 | -28.8 |
| 18 | FIDE 3371450 | 0 | — | +?N | −1B | F | +52N | +33B | +31N | =20B | 4.5 | 20.0 | 20.0 | 9.75 | 1134 | 0.0 |
| 19 | Quispe Mayta, Delvin Antonini | 0 | PER | +?B | −11N | +20B | =?N | −9N | +?B | +43B | 4.5 | 17.5 | 17.5 | 7.50 | 943 | 0.0 |
| 20 | FIDE 3364895 | 0 | — | +?N | −9B | −19N | +38B | +?N | +?B | =18N | 4.5 | 17.0 | 17.0 | 5.25 | 1026 | 0.0 |
| 21 | Alejo Paxi, Axcel Alejandro | 0 | BOL | +?B | −3N | +33B | +32N | +12N | −16B | −10N | 4.0 | 26.0 | 26.0 | 11.00 | 1529 | 0.0 |
| 22 | FIDE 3364844 | 0 | — | +?B | −14N | +28B | +31N | −6B | −24N | +39B | 4.0 | 23.5 | 23.5 | 9.50 | 1038 | 0.0 |
| 23 | Rojas Martinez, Nelson David | 0 | BOL | +?B | −15N | +35B | +?N | +11B | −6N | −7B | 4.0 | 22.5 | 22.5 | 8.00 | 1435 | 0.0 |
| 24 | FIDE 3371646 | 0 | — | −30B | +55N | +44B | +50N | −8N | +22B | −17N | 4.0 | 21.5 | 22.0 | 9.50 | 889 | 0.0 |
| 25 | FIDE 3364941 | 0 | — | +41B | −4N | −31B | −33N | +40B | +53N | +37B | 4.0 | 20.0 | 21.0 | 10.00 | 965 | 0.0 |
| 26 | Fernandez Palma, Alejandro | 0 | BOL | +?B | −13N | +?B | −3N | −31B | +33N | +32B | 4.0 | 19.5 | 19.5 | 6.00 | 1005 | 0.0 |
| 27 | FIDE 3371522 | 0 | — | +?N | −5B | +49N | −16B | +41N | −12B | +?N | 4.0 | 19.5 | 19.5 | 5.00 | 936 | 0.0 |
| 28 | FIDE 3365093 | 0 | — | −17N | +36B | −22N | +?B | −14B | =?N | +?N | 3.5 | 16.5 | 16.5 | 3.00 | 1060 | 0.0 |
| 29 | Rivero Torrico, Ian Andres | 0 | BOL | +?N | −12B | +?B | −11N | −35B | =52N | +54B | 3.5 | 15.5 | 15.5 | 1.75 | 866 | 0.0 |
| 30 | Espinoza Yucra, Junior Anthony Josely | 0 | PER | +24N | F | +13B | +17B | −2N | −4N | −14B | 3.0 | 30.0 | 34.0 | 13.50 | 1731 | 0.0 |
| 31 | FIDE 3365280 | 0 | — | +?N | −10B | +25N | −22B | +26N | −18B | F | 3.0 | 24.5 | 24.5 | 8.00 | 758 | 0.0 |
| 32 | FIDE 3371670 | 0 | — | +?N | +43B | −17N | −21B | +37B | −36N | −26N | 3.0 | 21.5 | 21.5 | 6.00 | 923 | 0.0 |
| 33 | FIDE 3365158 | 0 | — | −10N | +?B | −21N | +25B | −18N | −26B | +?N | 3.0 | 21.5 | 21.5 | 4.00 | 758 | 0.0 |
| 34 | Quispe Moreno, Lev Dylan | 0 | BOL | +36N | −17B | +?N | −8B | F | +?N | −11B | 3.0 | 19.5 | 19.5 | 3.00 | 879 | 0.0 |
| 35 | FIDE 3371514 | 0 | — | F | +42B | −23N | +?B | +29N | −14N | F | 3.0 | 18.5 | 18.5 | 6.50 | 1196 | 0.0 |
| 36 | FIDE 3364887 | 0 | — | −34B | −28N | +55B | F | +42N | +32B | −12N | 3.0 | 18.0 | 18.0 | 6.50 | 871 | 0.0 |
| 37 | FIDE 3371557 | 0 | — | −1N | −?B | +40N | +?B | −32N | +?B | −25N | 3.0 | 17.0 | 17.0 | 3.00 | 1134 | 0.0 |
| 38 | Morales Escobar, Alexander Jose | 0 | BOL | −13B | +?N | −16B | −20N | +46B | +?N | −?B | 3.0 | 17.0 | 17.0 | 3.00 | 960 | 0.0 |
| 39 | FIDE 3371549 | 0 | — | −14B | −?N | +45B | +?N | +?B | −11N | −22N | 3.0 | 17.0 | 17.0 | 3.00 | 1028 | 0.0 |
| 40 | FIDE 3371603 | 0 | — | −15B | −?N | −37B | +56N | −25N | +48B | +49N | 3.0 | 15.5 | 15.5 | 4.00 | 837 | 0.0 |
| 41 | FIDE 81475543 | 0 | — | −25N | +48B | +?N | −10B | −27B | +?N | −?B | 3.0 | 15.0 | 15.0 | 2.00 | 758 | 0.0 |
| 42 | FIDE 3371611 | 0 | — | −7B | −35N | +48N | +57B | −36B | −?N | +?B | 3.0 | 13.0 | 13.0 | 2.00 | 737 | 0.0 |
| 43 | FIDE 3371506 | 0 | — | F | −32N | +?B | +?N | +?B | −9B | −19N | 3.0 | 12.5 | 12.5 | 0.00 | 1026 | 0.0 |
| 44 | FIDE 3365069 | 0 | — | −16N | +?B | −24N | +49B | −?B | +?N | −?B | 3.0 | 10.5 | 10.5 | 2.00 | 984 | 0.0 |
| 45 | FIDE 3365123 | 0 | — | −11B | −?N | −39N | F | +?B | +51N | +?B | 3.0 | 10.0 | 10.0 | 2.00 | 860 | 0.0 |
| 46 | FIDE 3365263 | 0 | — | +?N | −8B | −50N | −?B | −38N | +56B | +?B | 3.0 | 10.0 | 10.0 | 0.00 | 855 | 0.0 |
| 47 | FIDE 3365107 | 0 | — | −6B | −?N | +?N | =?B | +?N | F | −15B | 2.5 | 9.5 | 9.5 | 0.00 | 858 | 0.0 |
| 48 | FIDE 3371565 | 0 | — | −3B | −41N | −42B | −51N | +55B | −40N | +57B | 2.0 | 17.0 | 17.0 | 0.50 | 1074 | 0.0 |
| 49 | FIDE 81452560 | 0 | — | +?B | −7N | −27B | −44N | −52B | +55N | −40B | 2.0 | 17.0 | 17.0 | 0.50 | 737 | 0.0 |
| 50 | Cerezo Catari, Jhon Cristian | 0 | BOL | +?N | −2N | +46B | −24B | F | F | F | 2.0 | 16.0 | 16.0 | 3.00 | 994 | 0.0 |
| 51 | FIDE 3365115 | 0 | — | −12N | −?B | −?N | +48B | −?N | −45B | +56N | 2.0 | 10.0 | 10.0 | 2.00 | 871 | 0.0 |
| 52 | FIDE 3365077 | 0 | — | −4B | −?N | F | −18B | +49N | =29B | F | 1.5 | 15.0 | 15.0 | 3.75 | 965 | 0.0 |
| 53 | FIDE 3365131 | 0 | — | −8N | +?B | F | −13N | −?B | −25B | −?N | 1.0 | 18.5 | 18.5 | 0.00 | 895 | 0.0 |
| 54 | FIDE 3371581 | 0 | — | −2B | =?N | =?B | −?N | −?B | F | −29N | 1.0 | 9.5 | 9.5 | 0.00 | 994 | 0.0 |
| 55 | FIDE 3371590 | 0 | — | −5N | −24B | −36N | =?B | −48N | −49B | F | 0.5 | 16.0 | 16.0 | 0.00 | 953 | 0.0 |
| 56 | FIDE 3371573 | 0 | — | −9N | −?B | −?N | −40B | F | −46N | −51B | 0.0 | 13.0 | 13.0 | 0.00 | 1026 | 0.0 |
| 57 | FIDE 3371530 | 0 | — | F | −6N | −?B | −42N | −?B | −?B | −48N | 0.0 | 10.0 | 10.0 | 0.00 | 879 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Mendoza Quispe, YanfrancoPER+35.65.0 pts · #6
- 2Da Silva, Ricardo MouraBRA+22.07.0 pts · #1
- 3Abarca Torres, Ronaldo ManuelPER+16.06.0 pts · #2
Top rating losers
- 1Onarry, Juan ManuelBOL-66.85.0 pts · #27
- 2Oyola, DanielBOL-48.45.0 pts · #13
- 3Kohagura Arrunategui, Jose Andres HidekiPER-28.84.5 pts · #17
Biggest upsets
- R3+317 Elo gap
- R4+242 Elo gap
- R3+203 Elo gap