CChessStats

Campeonato Nacional Categorias Menores Pares 2026 U18 Femenino

Open SwissStandard

17 players participated in this 7-round tournament, held from 20 Feb 2026 to 22 Feb 2026 in San Jose, Costa Rica. 3 titled players. Top 10 Elo average was 1688, and top seed was Sofia Mayorga Araya (🇨🇷 CRC, WIM, 2069).

Sofia Mayorga Araya (🇨🇷 CRC, WIM, 2069) won with 6.0/7, ahead of Larissa Mayorga Araya (5.0) and Diana Arias Carmona (5.0). Mayorga Araya broke clear in the final round.

The biggest upset came in round 2: Larissa Mayorga Araya (WCM, 1677) beat Geannina Isabela Rivera Gutierrez (1829), a +152-point gap.

Location
🇨🇷San Jose, Costa Rica
Dates
20 Feb 2026 → 22 Feb 2026
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 7 rounds
Top seed
🇨🇷WIMSofia Mayorga Araya2069
Avg top 10
1,688
Participants
17
Titled players · 3
WIM×1
WCM×2
Federations · 1 represented
🇨🇷Costa Rica×14
Top 3

How it unfolded

Top 6 · 7 rounds

WIM Sofia Mayorga Araya led from R4; +1.0-point edge over the runner-up.

Co-leaders
8
4
2
1
1
2
1
23.55.57R1R2R3R4R5R6R7
Mayorga Araya6Rivera Gutierrez5Mayorga Araya5Arias Carmona5Semana Ramirez4Nunez Vargas4
R4–R7 · LEAD HELD

WIM Sofia Mayorga Araya never relinquished the lead after R4; final gap +1.0 over the runner-up.

R6 · HEAD-TO-HEAD · WINNER VS 2ND

WIM Sofia Mayorga Araya drew with Geannina Isabela Rivera Gutierrez (White).

R1–R4 · WIN STREAK

WIM Sofia Mayorga Araya won 4 in a row (R1–R4).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1WIMSofia Mayorga Araya*
½
½
1
2Geannina Isabela Rivera Gutierrez
½
*
0
—
3WCMLarissa Mayorga Araya
½
1
*
1
4Diana Arias Carmona
0
—
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Mayorga Araya, SofiaWIM2069CRC+14N+7B+3N+5B=2N=4B+9N6.025.526.521.502021-8.7
2Mayorga Araya, LarissaWCM1677CRC+11N+4B−5B=9N=1B+6N+3B5.027.030.021.501873+62.3
3Arias Carmona, Diana1769CRC+15B+9N−1B+6N+5N+7B−2N5.025.526.515.501834+19.6
4Rivera Gutierrez, Geannina Isabela1829CRC+17B−2N=14B+7B+9N=1N+5B5.022.523.515.001817+2.5
5Semana Ramirez, BrendaWCM1700CRC+12N+8B+2N−1N−3B+10B−4N4.027.530.014.001693-6.0
6Nunez Vargas, Medelyn Nicole1586CRCF+15N+16B−3B+12N−2B+10N4.017.517.57.50923-25.2
7Salazar Delgado, Aylin Naomy1641CRC+10B−1N+17B−4N+14B−3N=8B3.523.524.56.751621-12.8
8Mendez Quesada, Estefany Pamela1480CRC+13B−5N−9B+16N−10N+15B=7N3.516.017.05.251367-15.2
9Chaves Chavarria, Ana Carolina1576CRC+16N−3B+8N=2B−4B=12N−1B3.027.028.08.251598-0.4
10Andrade Jara, Aythana de Dios0CRC−7NF+13B+11N+8B−5N−6B3.019.520.58.0015060.0
11Udiz Puerta, Nohely Nikol1475CRC−2B−17NF−10B+15N+13B+12B3.014.014.05.00773-30.0
12Solano Calvo, Denise0CRC−5B=13N+15B=14N−6B=9B−11N2.516.517.53.7513230.0
13FIDE 65783490—−8N=12B−10N−15B+16B−11NF1.514.014.02.256790.0
14Pozo Miranda, Camila1548CRC−1BF=4N=12B−7NFF1.020.020.03.751511+1.2
15FIDE 65566800—−3N−6B−12N+13N−11B−8N−16B1.019.520.51.507780.0
16FIDE 65700030—−9BF−6N−8B−13NF+15N1.013.013.01.007480.0
17Alvarado Machado, E. Daniela1465CRC−4N+11B−7NFFFF1.011.511.53.001525+5.6

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets