Primer Torneo Clasificatorio del Campeonato Nacional Absoluto 2025-26
Open SwissStandard
30 players participated in this 7-round tournament, held from 22 Nov 2025 to 30 Nov 2025 in Heredia, Costa Rica. 13 titled players. Top 10 Elo average was 2145, and top seed was Bernal Gonzalez Acosta (🇨🇷 CRC, GM, 2460).
Sebastian Mihajlov (🇨🇷 CRC, IM, 2361) won with 7.0/7, ahead of Joshua Quesada Leon (5.0) and Matias Haziel Lizano Quiros (5.0). Mihajlov won solo starting round 3.
The biggest upset came in round 2: Esteban Quesada Fallas (2011) beat Bernal Gonzalez Acosta (GM, 2460), a +449-point gap.
Location
🇨🇷Heredia, Costa Rica
Dates
22 Nov 2025 → 30 Nov 2025
Time control
Standard: 90 minutes for game with 30 seconds delay from move 1
System
Swiss · 7 rounds
Titled players · 13
GM×1
IM×1
FM×6
CM×5
Federations · 1 represented
🇨🇷Costa Rica×30
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 7 roundsIM Sebastian Mihajlov led from R3; +2.0-point edge over the runner-up.
Co-leaders
11
3
1
1
1
1
1
R3–R7 · LEAD HELD
IM Sebastian Mihajlov never relinquished the lead after R3; final gap +2.0 over the runner-up.
WIN STREAKS · 2 top finishers
IM Sebastian Mihajlov 7 wins (R1–R7)FM Matias Haziel Lizano Quiros 3 wins (R3–R5)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1IMSebastian Mihajlov | * | — | 1 | — |
| 2Joshua Quesada Leon | — | * | — | 1 |
| 3FMMatias Haziel Lizano Quiros | 0 | — | * | — |
| 4David Alberto Vives Rodriguez | — | 0 | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Mihajlov, SebastianIM | 2361 | CRC | +14B | +3N | +22B | +9N | +5B | +7N | +6B | 7.0 | 25.5 | 28.0 | 28.00 | 2811 | +7.9 |
| 2 | Quesada Leon, Joshua | 1908 | CRC | +4B | =5N | +6B | −8N | +22B | +10B | =9N | 5.0 | 26.0 | 28.5 | 20.25 | 2206 | +55.8 |
| 3 | Lizano Quiros, Matias HazielFM | 1925 | CRC | +13N | −1B | +30N | +12B | +21N | =9B | =5N | 5.0 | 25.0 | 25.5 | 14.25 | 2188 | +94.0 |
| 4 | Vives Rodriguez, David Alberto | 2023 | CRC | −2N | +28B | −23N | +30B | +13N | +21B | +7B | 5.0 | 18.5 | 19.0 | 11.50 | 2118 | +18.6 |
| 5 | Fernandez Sanchez, Mario AndresFM | 2025 | CRC | +23N | =2B | =7N | +25B | −1N | +8B | =3B | 4.5 | 27.5 | 29.5 | 15.50 | 2140 | +21.2 |
| 6 | Ramirez Madrid, Gerardo AlfonsoFM | 2021 | CRC | +28N | =7B | −2N | +17B | +23N | +12B | −1N | 4.5 | 25.0 | 26.0 | 12.00 | 2149 | +23.4 |
| 7 | Vargas Arguedas, Caleb | 2076 | CRC | +21B | =6N | =5B | +16N | +8B | −1B | −4N | 4.0 | 28.0 | 30.5 | 14.00 | 2126 | +22.0 |
| 8 | Cabezas Solano, David AlejandroFM | 2191 | CRC | −10B | +11N | +18B | +2B | −7N | −5N | +15B | 4.0 | 25.0 | 28.0 | 15.50 | 2041 | -25.4 |
| 9 | Solano Cordero, Jorge Alexis | 2008 | CRC | F | +30B | +25N | −1B | +10N | =3N | =2B | 4.0 | 24.0 | 24.5 | 11.50 | 2090 | +12.4 |
| 10 | Barboza Viquez, Martin EduardoCM | 2057 | CRC | +8N | =12B | =17N | +13B | −9B | −2N | +16B | 4.0 | 23.0 | 26.0 | 13.75 | 2015 | -11.6 |
| 11 | Cespedes Rodriguez, Luis Michel | 1970 | CRC | −12N | −8B | +24N | −20B | +27B | +18N | +17B | 4.0 | 19.0 | 20.5 | 10.00 | 2106 | +23.6 |
| 12 | Pastor Carvajal, JeigothCM | 2045 | CRC | +11B | =10N | =16B | −3N | +18B | −6N | =14B | 3.5 | 24.0 | 27.0 | 12.25 | 1937 | -18.8 |
| 13 | Hernandez Perez, Javier Francisco | 1874 | CRC | −3B | +14N | +29B | −10N | −4B | =24N | +21B | 3.5 | 22.5 | 23.5 | 8.25 | 2010 | +49.2 |
| 14 | Avendano Porras, RodrigoCM | 1973 | CRC | −1N | −13B | −28N | +19B | +30N | +25B | =12N | 3.5 | 20.0 | 20.5 | 7.25 | 1965 | -3.4 |
| 15 | Espitia Torres, MateoCM | 2005 | CRC | =26B | −16N | −21B | +29N | +25N | +23B | −8N | 3.5 | 16.0 | 17.0 | 6.50 | 1962 | -7.4 |
| 16 | Lezcano Martinez, Christopher | 1712 | CRC | =17N | +15B | =12N | −7B | −20N | +26B | −10N | 3.0 | 21.0 | 23.0 | 8.75 | 1982 | +80.0 |
| 17 | Cossio Carvajal, Bruno | 2012 | CRC | =16B | =21N | =10B | −6N | =26N | +22B | −11N | 3.0 | 20.5 | 22.5 | 8.25 | 1933 | -29.6 |
| 18 | Aguero Espinoza, Sebasthian | 1895 | CRC | −22N | +24B | −8N | +28B | −12N | −11B | +25N | 3.0 | 18.5 | 19.5 | 5.50 | 1939 | +6.8 |
| 19 | Jimenez Molina, Juan LeonFM | 2007 | CRC | −25N | −23B | F | −14N | +29B | +28B | +26N | 3.0 | 12.0 | 12.0 | 4.00 | 1921 | -13.8 |
| 20 | Gonzalez Acosta, BernalGM | 2460 | CRC | +27N | −22B | F | +11N | +16B | F | F | 3.0 | 11.0 | 11.0 | 8.50 | 2253 | -6.8 |
| 21 | Chinchilla Miranda, EugenioFM | 2195 | CRC | −7N | =17B | +15N | +26B | −3B | −4N | −13N | 2.5 | 24.0 | 26.0 | 7.00 | 1873 | -58.4 |
| 22 | Quesada Fallas, Esteban | 2011 | CRC | +18B | +20N | −1N | =23B | −2N | −17N | F | 2.5 | 23.5 | 23.5 | 7.25 | 2041 | 0.0 |
| 23 | Ramirez Aguilar, Julian Jose | 2001 | CRC | −5B | +19N | +4B | =22N | −6B | −15N | −24B | 2.5 | 23.0 | 25.5 | 9.25 | 1909 | -36.0 |
| 24 | Angulo Perez, SebastianCM | 1984 | CRC | F | −18N | −11B | F | +28N | =13B | +23N | 2.5 | 14.0 | 14.0 | 5.25 | 1933 | -14.0 |
| 25 | Ulloa Jimenez, Santiago | 1801 | CRC | +19B | +26N | −9B | −5N | −15B | −14N | −18B | 2.0 | 21.5 | 23.5 | 5.00 | 1817 | +1.4 |
| 26 | Ramos Rodriguez, Daniel | 1910 | CRC | =15N | −25B | +27N | −21N | =17B | −16N | −19B | 2.0 | 17.0 | 18.5 | 4.75 | 1790 | -47.2 |
| 27 | Rojas Cisneros, Kevin | 1894 | CRC | −20B | =29N | −26B | F | −11N | F | +30N | 1.5 | 10.5 | 10.5 | 1.00 | 1817 | -12.8 |
| 28 | Carvajal Pena, Daniel | 1924 | CRC | −6B | −4N | +14B | −18N | −24B | −19N | F | 1.0 | 21.5 | 21.5 | 3.50 | 1711 | -30.2 |
| 29 | Ruiz Alfaro, Darrel | 1914 | CRC | F | =27B | −13N | −15B | −19N | =30B | F | 1.0 | 16.0 | 16.0 | 1.00 | 1664 | -31.4 |
| 30 | Alvarado Machado, Bryan Alberto | 1740 | CRC | F | −9N | −3B | −4N | −14B | =29N | −27B | 0.5 | 20.0 | 20.0 | 0.50 | 1555 | -34.4 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Lizano Quiros, Matias HazielFMCRC+94.05.0 pts · #3
- 2Lezcano Martinez, ChristopherCRC+80.03.0 pts · #19
- 3Quesada Leon, JoshuaCRC+55.85.0 pts · #2
Top rating losers
- 1Chinchilla Miranda, EugenioFMCRC-58.42.5 pts · #21
- 2Ramos Rodriguez, DanielCRC-47.22.0 pts · #25
- 3Ramirez Aguilar, Julian JoseCRC-36.02.5 pts · #24
Biggest upsets
- R2+449 Elo gap
- R7+321 Elo gap
- R2+293 Elo gap