CChessStats

Olimpiada Nacional 2026. Region I. Sub 16 Fem

Open SwissStandard

10 players participated in this 5-round tournament, held from 18 Mar 2026 to 20 Mar 2026 in CHH, Chihuahua, Mexico. 1 titled players. Top 10 Elo average was 1173, and top seed was Mia Fernanda Guzman Garcia (🇲🇽 MEX, WCM, 1998).

Mia Fernanda Guzman Garcia (🇲🇽 MEX, WCM, 1998) won with 4.0/5, ahead of Sara Jana Gastelum Pacheco (4.0) and Marbella Bojorquez Beltran (3.0). Guzman Garcia shared the lead from round 1, winning on tie-break.

The biggest upset came in round 5: Sara Jana Gastelum Pacheco (1663) beat Mia Fernanda Guzman Garcia (WCM, 1998), a +335-point gap.

Location
🇲🇽CHH, Chihuahua, 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
🇲🇽WCMMia Fernanda Guzman Garcia1998
Avg top 10
1,173
Participants
10
Titled players · 1
WCM×1
Federations · 1 represented
🇲🇽Mexico×10
Top 3

How it unfolded

Top 6 · 5 rounds

Tight race until R5; 2 players tied at 4.0/5, decided on Buchholz.

Co-leaders
5
2
1
1
2
1.52.545R1R2R3R4R5
Gastelum Pacheco4Guzman Garcia4Bojorquez Beltran3Ordonez Sanchez3Mireles Nunez2.5Trujillo Guzman2.5
R5 · TIEBREAK CLUSTER

2 players finish on 4.0/5. Guzman Garcia takes the title on Buchholz Cut1 (12.0).

R5 · HEAD-TO-HEAD · WINNER VS 2ND

Sara Jana Gastelum Pacheco beat WCM Mia Fernanda Guzman Garcia (Black).

WIN STREAKS · 2 top finishers

Sara Jana Gastelum Pacheco 4 wins (R2–R5)WCM Mia Fernanda Guzman Garcia 4 wins (R1–R4)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Sara Jana Gastelum Pacheco*
1
1
—
2WCMMia Fernanda Guzman Garcia
0
*—
1
3Marbella Bojorquez Beltran
0
—*
½
4Andrea Angelica Ordonez Sanchez—
0
½
*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Guzman Garcia, Mia FernandaWCM1998MEX+6B+7N+5B+4N−2B4.012.014.010.001792-24.8
2Gastelum Pacheco, Sara Jana1663MEX−5B+10N+3B+9N+1N4.011.011.59.002519+67.6
3Bojorquez Beltran, Marbella1753MEX+8N=4B−2N+5N=7B3.011.513.57.001661-15.2
4Ordonez Sanchez, Andrea Angelica1732MEX+10B=3N+7B−1B=5N3.011.512.05.251684-6.4
5Mireles Nunez, Lindsay0MEX+2N+8B−1N−3B=4B2.514.016.07.5017470.0
6Trujillo Guzman, Gema Zophiel1580MEX−1N=9B=8N=7N+10B2.59.510.03.251531-12.4
7Arvallo Diaz, Dafne Marina0MEX+9N−1B−4N=6B=3N2.012.514.04.2516230.0
8Villalobos Rendon, Liliana1582MEX−3B−5N=6B+10N=9B2.09.510.02.501455-20.0
9Martinez Munoz, Hilda Renata1422MEX−7B=6N=10B−2B=8N1.510.511.02.501483+11.2
10Gonzalez Estudillo, Grettel0MEX−4N−2B=9N−8B−6N0.511.513.00.7512280.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets