CChessStats

V Festival de divisiones ADAS, Clasificatorio 3a division 2026

Open SwissStandard

20 players participated in this 7-round tournament, held from 20 Jun 2026 to 21 Jun 2026 in Gimnasio Deportivo y Recreativo de Olimpiadas Especiales, Parque de la Paz, Costa Rica. Top 10 Elo average was 1689, and top seed was Jeferson Antonio Arguedas Gomez (🇨🇷 CRC, 1745).

Mateo Cadena Diaz (🇨🇷 CRC, 1737) won with 6.0/7, ahead of Jackson Robert Cosman (5.0) and Rafael Eduardo Garcia Delgado (5.0). Cadena Diaz took the lead from round 4.

The biggest upset came in round 5: Santiago Rodriguez Gonzalez (1562) beat Jaime Murillo Arguedas (1726), a +164-point gap.

Location
🇨🇷Gimnasio Deportivo y Recreativo de Olimpiadas Especiales, Parque de la Paz, Costa Rica
Dates
20 Jun 2026 → 21 Jun 2026
Time control
Standard: 30 minutes for game with 30 seconds increment from move 1
System
Swiss · 7 rounds
Top seed
🇨🇷Jeferson Antonio Arguedas Gomez1745
Avg top 10
1,689
Participants
20
Federations · 1 represented
🇨🇷Costa Rica×19
Top 3

How it unfolded

Top 6 · 7 rounds

Mateo Cadena Diaz led from R4; +1.0-point edge over the runner-up.

Co-leaders
7
3
1
1
2
1
1
23.55.57R1R2R3R4R5R6R7Cadena Diaz takes lead
Cadena Diaz6Cosman5Garcia Delgado5Ortiz Portuguez4.5Campos Gonzalez4.5Soza Aleman4
R4 · LEADER CHANGE20 Jun

Mateo Cadena Diaz takes the sole lead (3.5/4).

R6 · HEAD-TO-HEAD · WINNER VS 2ND

Mateo Cadena Diaz beat Jackson Robert Cosman (Black).

WIN STREAKS · 2 top finishers

Mateo Cadena Diaz 3 wins (R2–R4)Jackson Robert Cosman 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Mateo Cadena Diaz*
1
—
½
2Jackson Robert Cosman
0
*—
0
3Rafael Eduardo Garcia Delgado——*
½
4Victor Sebastian Ortiz Portuguez
½
1
½
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Cadena Diaz, Mateo1737CRC=9B+11N+10B+16N=4B+2N+7B6.024.026.022.001966+70.0
2Cosman, Jackson Robert1702CRC+19B+17N+6B−4N+14B−1B+8N5.023.524.514.001790+33.6
3Garcia Delgado, Rafael Eduardo1561CRC+20B−16N+13B+6N=7B+14N=4B5.020.520.514.251795+37.6
4Ortiz Portuguez, Victor Sebastian1669CRCF+15N+16B+2B=1N=8B=3N4.525.025.017.501850+56.4
5Campos Gonzalez, Gabriel1561CRC=11B=8N=9B−13N+10B+15N+14B4.520.523.515.001704+27.8
6Castillo Mendez, Carlos Rafael1640CRC+14N+18B−2N−3B+13B−7N+9B4.023.525.511.501695+22.0
7Arguedas Gomez, Jeferson Antonio1745CRC−16B+20N+15B=10N=3N+6B−1N4.023.523.511.251638-33.6
8Soza Aleman, Johan Josue1686CRC−17B=5B+19N+9N+18B=4N−2B4.021.522.511.001668-5.6
9Salazar Quiros, Maria Regina1591CRC=1N=10B=5N−8B+11N+12B−6N3.525.529.014.001622+12.0
10Villalobos Nunez, Ethan Alonso1634CRC+13B=9N−1N=7B−5N+18B=12N3.524.526.510.501650+6.0
11Rojas Guillen, Paulo Cesar1531CRC=5N−1B−14N+15N−9B+19B+13N3.523.024.09.251596+24.0
12Rodriguez Gonzalez, Santiago1562CRC−15B−13N+20B+17N+16B−9N=10B3.517.017.05.751572+2.4
13Fallas Martinez, Jonathan1676CRC−10N+12B−3N+5B−6N+17B−11B3.024.026.010.001536-54.4
14La Touche Barrantes, Julian1564CRC−6B+19N+11B+18N−2N−3B−5N3.024.025.06.501548-7.2
15Diaz Calderon, Jahir1532CRC+12N−4B−7N−11B+19N−5B+17N3.022.023.06.501550+2.4
16Murillo Arguedas, Jaime1726CRC+7N+3B−4N−1B−12NFF2.023.023.09.001583-19.4
17Marwaha, Atharv1616CRC+8N−2B−18N−12B+20N−13N−15B2.020.520.54.001366-72.8
18Rivera Mora, Gabriel1676CRCF−6N+17B−14B−8N−10N+20B2.016.516.52.001388-73.2
19da Silva Ramirez, Luis Fernando1514CRC−2N−14B−8B+20N−15B−11NF1.018.518.50.00803-76.4
20FIDE 65754040—−3N−7B−12N−19B−17BF−18N0.017.517.50.008120.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets