CChessStats

Primer Torneo Clasificatorio del Campeonato Nacional Femenino 2025-26

Open SwissStandard

16 players participated in this 7-round tournament, held from 22 Nov 2025 to 30 Nov 2025 in Heredia, Costa Rica. 8 titled players. Top 10 Elo average was 1798, and top seed was Kristel Meliss Diaz Charpentier (🇨🇷 CRC, WIM, 1975).

Olga Leticia Gamboa Alvarado (🇨🇷 CRC, WFM, 1919) won with 6.0/7, ahead of Maria Elena Rodriguez Arrieta (5.0) and Kristel Meliss Diaz Charpentier (4.5). Gamboa Alvarado won solo starting round 6.

The biggest upset came in round 7: Victoria Sandi Barrantes (1692) beat Kristel Meliss Diaz Charpentier (WIM, 1975), a +283-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
Top seed
🇨🇷WIMKristel Meliss Diaz Charpentier1975
Avg top 10
1,798
Participants
16
Titled players · 8
WIM×2
WFM×1
WCM×5
Federations · 1 represented
🇨🇷Costa Rica×16
Top 3

How it unfolded

Top 6 · 7 rounds

WFM Olga Leticia Gamboa Alvarado led from R3; +1.0-point edge over the runner-up.

Co-leaders
6
3
1
2
2
1
1
23.55.57R1R2R3R4R5R6R7
Gamboa Alvarado6Rodriguez Arrieta5Diaz Charpentier4.5Campos Munoz4Sandi Barrantes4Alvarado Wiciak3.5
R3–R7 · LEAD HELD

WFM Olga Leticia Gamboa Alvarado never relinquished the lead after R3; final gap +1.0 over the runner-up.

R4 · HEAD-TO-HEAD · WINNER VS 2ND

WFM Olga Leticia Gamboa Alvarado drew with WIM Maria Elena Rodriguez Arrieta (White).

R1–R3 · WIN STREAK

WFM Olga Leticia Gamboa Alvarado won 3 in a row (R1–R3).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1WFMOlga Leticia Gamboa Alvarado*
½
½
1
2WIMMaria Elena Rodriguez Arrieta
½
*
½
—
3WIMKristel Meliss Diaz Charpentier
½
½
*
½
4WCMValentina Campos Munoz
0
—
½
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Gamboa Alvarado, Olga LeticiaWFM1919CRC+12N+10B+8N=2B=3B+11N+4N6.022.524.519.752096+28.6
2Rodriguez Arrieta, Maria ElenaWIM1933CRC+9B+5N=3B=1N=11N+6B=7N5.024.527.018.751924+1.6
3Diaz Charpentier, Kristel MelissWIM1975CRC+7N+11B=2N+6B=1N=4B−5N4.526.028.517.001906-9.6
4Campos Munoz, ValentinaWCM1917CRC=8N−6B+16N+7B+12N=3N−1B4.023.023.510.001763-46.0
5Sandi Barrantes, Victoria1692CRC+13N−2B+7N−11B−6N+10B+3B4.022.023.012.001808+21.6
6Mayorga Araya, LarissaWCM1683CRC−14B+4N+9B−3N+5B−2N=8B3.524.025.012.751725+10.8
7Arias Carmona, Diana1696CRC−3B+12N−5B−4N+13B+9N=2B3.522.523.58.501740+10.4
8Alvarado Wiciak, Ana Luisa1489CRC=4B+14N−1B+13N=9BF=6N3.518.518.57.251724+61.6
9Loria Molina, Sofia1608CRC−2N+13B−6N+15B=8N−7B=16B3.017.518.04.001589-11.2
10Salazar Gould, Kristy ValeriaWCM1770CRC+15B−1NFF+16B−5N+13N3.012.512.52.501720-12.0
11Bogantes Robleto, KarinaWCM1770CRCF−3N+14B+5N=2B−1BF2.521.021.07.501793+3.8
12Corrales Corrales, Ana Maria1611CRC−1B−7B+15N+14N−4BFF2.015.515.52.001649+5.6
13Fernandez Mayorga, ElenaWCM1473CRC−5B−9NF−8B−7N+16N−10B1.017.517.50.501371-21.2
14Pozo Miranda, Camila1628CRC+6N−8B−11N−12B−15NFF1.012.512.53.501399-11.2
15Bermudez Arce, Ximena Sofia1596CRC−10NF−12B−9N+14BFF1.09.09.01.001417-41.2
16Diaz Charpentier, Ashly Valeria1549CRCFF−4BF−10N−13B=9N0.513.513.51.501366-37.6

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets