Campeonato Promocional de Ajedrez Sub-1800, Llallagua 2025
Open SwissStandard
46 players participated in this 7-round tournament, held from 29 Nov 2025 to 30 Nov 2025 in Llallagua, Bolivia. Top 10 Elo average was 1627, and top seed was Ariel Sanez Camacho (🇧🇴 BOL, 1782).
Styven Sandro Araujo Miranda (🇧🇴 BOL, 1629) won with 6.0/7, ahead of Ariel Sanez Camacho (6.0) and Ronaldo Acarapi Velasco (5.5). Araujo Miranda shared the lead from round 6, winning on tie-break.
The biggest upset came in round 3: Katerin Silicuana Quispe (1419) beat Andiara Carolina Flores Linneo (1664), a +245-point gap.
Location
🇧🇴Llallagua, Bolivia
Dates
29 Nov 2025 → 30 Nov 2025
Time control
Standard: 45 minutes with 30 seconds increment from move 1
System
Swiss · 7 rounds
Federations · 1 represented
🇧🇴Bolivia×26
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 7 roundsTight race until R7; 2 players tied at 6.0/7, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.
Co-leaders
21
11
4
2
1
2
2
R7 · TIEBREAK CLUSTER
2 players finish on 6.0/7. Araujo Miranda takes the title on Buchholz Cut1 (25.0).
WIN STREAKS · 3 top finishers
Ariel Sanez Camacho 6 wins (R2–R7)Styven Sandro Araujo Miranda 3 wins (R1–R3)Ronaldo Acarapi Velasco 3 wins (R1–R3)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Ariel Sanez Camacho | * | — | 1 | — |
| 2Styven Sandro Araujo Miranda | — | * | ½ | — |
| 3Ronaldo Acarapi Velasco | 0 | ½ | * | — |
| 4Katerin Silicuana Quispe | — | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Araujo Miranda, Styven Sandro | 1629 | BOL | +39N | +17B | +26B | =3N | =21B | +4N | +14B | 6.0 | 25.0 | 26.5 | 22.00 | 1775 | +14.8 |
| 2 | Sanez Camacho, Ariel | 1782 | BOL | F | +12B | +9N | +10B | +25N | +3N | +21B | 6.0 | 24.0 | 24.0 | 24.00 | 2355 | +22.6 |
| 3 | Acarapi Velasco, Ronaldo | 1557 | BOL | +38N | +34B | +23N | =1B | +6N | −2B | +7N | 5.5 | 27.0 | 28.5 | 19.50 | 1789 | +48.4 |
| 4 | Iporre Romero, Kirna Jhocabed | 1514 | BOL | +41N | +27B | −25N | +13B | +5N | −1B | +24N | 5.0 | 24.0 | 25.0 | 16.00 | 1608 | +13.6 |
| 5 | Silicuana Quispe, Katerin | 1419 | BOL | +40N | +19B | +7N | F | −4B | +34N | +15B | 5.0 | 23.0 | 24.0 | 15.50 | 1686 | +42.0 |
| 6 | Iporre Romero, Keyla | 1686 | BOL | +43N | +13B | −10N | +12B | −3B | +36N | +26B | 5.0 | 22.5 | 23.5 | 14.00 | 1425 | -42.8 |
| 7 | Flores Linneo, Andiara Carolina | 1664 | BOL | +28B | +16N | −5B | +35N | +26B | =8N | −3B | 4.5 | 25.0 | 27.0 | 14.25 | 1236 | -63.6 |
| 8 | Tapia Espada, Miguel Anghelo | 1550 | BOL | F | +29N | +44B | +16N | +34B | =7B | −11N | 4.5 | 20.0 | 21.0 | 12.25 | 1392 | -16.4 |
| 9 | Alacoria Mena, Alejandro | 1468 | BOL | +44N | +30B | −2B | +28N | +20B | −21N | −16B | 4.0 | 23.5 | 24.5 | 11.00 | 920 | -15.6 |
| 10 | Ortiz Marcelo, Andy Cristofer | 1444 | BOL | +31B | +45N | +6B | −2N | −14B | +35N | F | 4.0 | 23.0 | 23.0 | 10.00 | 1566 | +15.2 |
| 11 | Ruiz Achacollo, Abner Thiago | 1509 | BOL | F | −21B | +18N | +22B | +33N | F | +8B | 4.0 | 21.0 | 21.0 | 14.50 | 1604 | +10.4 |
| 12 | Castillo Yujra, Vladimir Alex | 1649 | BOL | +46B | −2N | +32B | −6N | +31B | +27N | F | 4.0 | 20.0 | 20.0 | 9.00 | 941 | -30.0 |
| 13 | Choque Caceres, Rosario Melany | 0 | BOL | +?B | −6N | +27B | −4N | +?B | −15N | +31B | 4.0 | 20.0 | 20.0 | 6.00 | 773 | 0.0 |
| 14 | Rocha Correa, Jhonn Gregor | 1590 | BOL | +42B | +33N | F | −25B | +10N | +24B | −1N | 4.0 | 19.5 | 19.5 | 10.50 | 1616 | +4.4 |
| 15 | Janayo Serrano, Pablo | 1497 | BOL | F | +41B | +40N | +17B | −24N | +13B | −5N | 4.0 | 19.0 | 20.0 | 10.00 | 610 | -49.6 |
| 16 | Chiri Flores, Arley Yhosue | 0 | BOL | +?N | −7B | +?N | −8B | F | +18B | +9N | 4.0 | 17.0 | 17.0 | 8.00 | 1435 | 0.0 |
| 17 | Correa Correa, Vladimir Franco | 0 | BOL | +?B | −1N | +?B | −15N | +19B | −?N | +27B | 4.0 | 17.0 | 17.0 | 7.00 | 740 | 0.0 |
| 18 | Silva Lopez, Samuel Adrian | 0 | BOL | +?B | −24N | −11B | +42N | +28B | −16N | +35B | 4.0 | 17.0 | 17.0 | 6.00 | 653 | 0.0 |
| 19 | FIDE 3373045 | 0 | — | +36B | −5N | +42B | −33N | −17N | +?B | +?B | 4.0 | 14.5 | 14.5 | 3.00 | 619 | 0.0 |
| 20 | Jorge Javier, Helen Magaly | 0 | BOL | F | +?N | F | +?B | −9N | +?B | +22B | 4.0 | 7.5 | 7.5 | 3.50 | 668 | 0.0 |
| 21 | Ruiz Achacollo, Jose Damir | 1650 | BOL | F | +11N | +24B | F | =1N | +9B | −2N | 3.5 | 28.0 | 28.0 | 14.00 | 1706 | +14.4 |
| 22 | FIDE 3372987 | 0 | — | F | =?N | +29B | −11N | +37B | +33B | −20N | 3.5 | 15.0 | 15.0 | 7.00 | 706 | 0.0 |
| 23 | FIDE 3372839 | 0 | — | +?B | +?N | −3B | −34N | −35B | =38N | +?B | 3.5 | 11.0 | 11.0 | 0.75 | 757 | 0.0 |
| 24 | Condori Laura, Dorian | 1401 | BOL | +32N | +18B | −21N | F | +15B | −14N | −4B | 3.0 | 23.5 | 23.5 | 11.00 | 1374 | -5.2 |
| 25 | Layme Benito, Jose Sebastian | 0 | BOL | +?N | F | +4B | +14N | −2B | F | F | 3.0 | 23.0 | 23.0 | 9.00 | 1637 | 0.0 |
| 26 | Calle Zabala, Dusan | 1416 | BOL | F | +37B | −1N | +45B | −7N | +30B | −6N | 3.0 | 20.0 | 20.0 | 4.50 | 864 | 0.0 |
| 27 | Perez Alvarez, Aaron Alejandro | 0 | BOL | +?B | −4N | −13N | +?B | +?N | −12B | −17N | 3.0 | 17.0 | 17.0 | 0.00 | 786 | 0.0 |
| 28 | FIDE 3358070 | 0 | — | −7N | +?B | +30N | −9B | −18N | +40B | −?N | 3.0 | 16.5 | 16.5 | 4.00 | 766 | 0.0 |
| 29 | FIDE 3373070 | 0 | — | F | −8B | −22N | +39B | −30N | +37N | +38B | 3.0 | 15.5 | 15.5 | 4.50 | 750 | 0.0 |
| 30 | FIDE 3372979 | 0 | — | F | −9N | −28B | +?N | +29B | −26N | +36B | 3.0 | 15.0 | 15.0 | 5.00 | 668 | 0.0 |
| 31 | FIDE 3360598 | 0 | — | −10N | +?B | −?N | +?B | −12N | +43B | −13N | 3.0 | 13.0 | 13.0 | 1.00 | 747 | 0.0 |
| 32 | FIDE 3366065 | 0 | — | −24B | +?N | −12N | −?B | −?N | +46B | +43N | 3.0 | 8.0 | 8.0 | 1.00 | 725 | 0.0 |
| 33 | FIDE 3372936 | 0 | — | F | −14B | =37N | +19B | −11B | −22N | +?N | 2.5 | 21.5 | 21.5 | 4.75 | 748 | 0.0 |
| 34 | Janco Mamani, Jhon Jesus | 0 | BOL | F | −3N | F | +23B | −8N | −5B | +?N | 2.0 | 22.5 | 22.5 | 3.50 | 709 | 0.0 |
| 35 | Janco Mamani, Erik Oscar | 0 | BOL | −?N | F | +?B | −7B | +23N | −10B | −18N | 2.0 | 16.0 | 16.0 | 3.50 | 740 | 0.0 |
| 36 | FIDE 3372871 | 0 | — | −19N | −40B | +41N | +?B | F | −6B | −30N | 2.0 | 14.0 | 14.0 | 1.00 | 900 | 0.0 |
| 37 | FIDE 3373061 | 0 | — | +?B | −26N | =33B | −?N | −22N | −29B | −39N | 1.5 | 13.5 | 13.5 | 1.25 | 693 | 0.0 |
| 38 | FIDE 3372928 | 0 | — | −3B | −?N | +?B | F | −?N | =23B | −29N | 1.5 | 12.0 | 12.0 | 1.75 | 757 | 0.0 |
| 39 | FIDE 3372910 | 0 | — | −1B | −?N | −?B | −29N | F | =?N | +37B | 1.5 | 10.5 | 10.5 | 1.50 | 761 | 0.0 |
| 40 | FIDE 3372960 | 0 | — | −5B | +36N | −15B | −?N | F | −28N | F | 1.0 | 15.0 | 15.0 | 2.00 | 658 | 0.0 |
| 41 | FIDE 3372944 | 0 | — | −4B | −15N | −36B | +46N | F | −?B | F | 1.0 | 12.0 | 12.0 | 0.00 | 710 | 0.0 |
| 42 | FIDE 3372901 | 0 | — | −14N | +?B | −19N | −18B | F | −?N | F | 1.0 | 12.0 | 12.0 | 0.00 | 790 | 0.0 |
| 43 | FIDE 3372898 | 0 | — | −6B | +46N | F | −?B | F | −31N | −32B | 1.0 | 11.0 | 11.0 | 0.00 | 900 | 0.0 |
| 44 | FIDE 3366030 | 0 | — | −9B | F | −8N | F | −?B | −?N | +?B | 1.0 | 8.5 | 8.5 | 0.00 | 704 | 0.0 |
| 45 | FIDE 3373053 | 0 | — | F | −10B | F | −26N | F | F | F | 0.0 | 10.0 | 10.0 | 0.00 | 645 | 0.0 |
| 46 | FIDE 3373010 | 0 | — | −12N | −43B | −?N | −41B | F | −32N | F | 0.0 | 9.0 | 9.0 | 0.00 | 849 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Acarapi Velasco, RonaldoBOL+48.45.5 pts · #5
- 2Silicuana Quispe, KaterinBOL+42.05.0 pts · #6
- 3Sanez Camacho, ArielBOL+22.66.0 pts · #1
Top rating losers
- 1Flores Linneo, Andiara CarolinaBOL-63.64.5 pts · #15
- 2Janayo Serrano, PabloBOL-49.64.0 pts · #20
- 3Iporre Romero, KeylaBOL-42.85.0 pts · #12
Biggest upsets
- R3+245 Elo gap
- R3+242 Elo gap
- R5+129 Elo gap