CChessStats

Olimpiada Nacional 2026. Region II. Sub 20 Fem

Open SwissStandard

10 players participated in this 5-round tournament, held from 18 Mar 2026 to 20 Mar 2026 in ZAC, Zacatecas, Mexico. 1 titled players. Top 10 Elo average was 1519, and top seed was Scarlett Daniela Olea Valle (🇲🇽 MEX, WCM, 1973).

Scarlett Daniela Olea Valle (🇲🇽 MEX, WCM, 1973) won with 4.5/5, ahead of Paola Crystal Ramos Puga (3.5) and Greshya Jocelyn Gonzalez Romo (3.0). Olea Valle won solo starting round 3.

The biggest upset came in round 1: Paola Crystal Ramos Puga (1588) beat Erin Huerta Osorno (1846), a +258-point gap.

Location
🇲🇽ZAC, Zacatecas, Mexico
Dates
18 Mar 2026 → 20 Mar 2026
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 5 rounds
Top seed
🇲🇽WCMScarlett Daniela Olea Valle1973
Avg top 10
1,519
Participants
10
Titled players · 1
WCM×1
Federations · 1 represented
🇲🇽Mexico×9
Top 3

How it unfolded

Top 6 · 5 rounds

WCM Scarlett Daniela Olea Valle led from R3; +1.0-point edge over the runner-up.

Co-leaders
5
3
1
1
1
1.52.545R1R2R3R4R5
Olea Valle4.5Ramos Puga3.5Gonzalez Romo3Gonzalez Castro3Huerta Osorno3Gutierrez Lopez2.5
R3–R5 · LEAD HELD

WCM Scarlett Daniela Olea Valle never relinquished the lead after R3; final gap +1.0 over the runner-up.

R3 · HEAD-TO-HEAD · WINNER VS 2ND

WCM Scarlett Daniela Olea Valle beat Paola Crystal Ramos Puga (Black).

R1–R4 · WIN STREAK

WCM Scarlett Daniela Olea Valle won 4 in a row (R1–R4).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1WCMScarlett Daniela Olea Valle*
1
1
—
2Paola Crystal Ramos Puga
0
*
½
1
3Greshya Jocelyn Gonzalez Romo
0
½
*
1
4Isis Gonzalez Castro—
0
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Olea Valle, Scarlett DanielaWCM1973MEX+9N+7B+2N+3B=4N4.511.513.011.502073+17.6
2Ramos Puga, Paola Crystal1588MEX+4N+9B−1B+5N=3N3.513.515.09.001939+88.8
3Gonzalez Romo, Greshya Jocelyn1739MEX+6N+5B=7N−1N=2B3.013.515.58.251758+3.0
4Huerta Osorno, Erin1846MEX−2B=8N+10B+7N=1B3.012.012.05.251685-15.2
5Gonzalez Castro, Isis1698MEX+10N−3N+6B−2B+9N3.010.510.54.001629-14.8
6Gutierrez Lopez, Madelin1496MEX−3B+10N−5N+8B=7B2.510.010.03.001567+12.4
7Dominguez Martinez, Paola Irali1647MEX+8B−1N=3B−4B=6N2.013.015.04.751640-11.2
8Muniz Flores, Citlalli Marian1508MEX−7N=4B=9N−6N+10B2.09.09.02.251484-7.2
9Sanchez Oyervidez, Gina Mariana1696MEX−1B−2N=8B+10N−5B1.513.013.01.001370-61.2
10FIDE 5500228730—−5B−6B−4N−9B−8N0.010.512.00.008480.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets