Olimpiada Nacional 2026 Sub 12 Femenil Estandar

Open SwissStandard

37 players participated in this 6-round tournament, held from 21 May 2026 to 23 May 2026 in SLP, San Luis Potosi, Mexico. Top 10 Elo average was 1626, and top seed was Sara Victoria Ruiz Arce (🇲🇽 MEX, 1734).

Alondra Bagatella Avalos (🇲🇽 MEX, 1697) won with 6.0/6, ahead of Estefania Gaona Garrido (4.5) and Sara Victoria Ruiz Arce (4.5). Bagatella Avalos won solo starting round 5.

The biggest upset came in round 3: Valeri Itzayan Pedraza Rodriguez (1475) beat Luna Estephania Lopez Arevalo (1673), a +198-point gap.

Location

🇲🇽SLP, San Luis Potosi, Mexico

Dates

21 May 2026 → 23 May 2026

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 6 rounds

Top seed

🇲🇽Sara Victoria Ruiz Arce1734

Avg top 10

1,626

Participants

Federations · 1 represented

🇲🇽Mexico×34

Top 3

🥇
Alondra Bagatella Avalos
🇲🇽MEX·1697
6.0pts·2351perf+75.2
🥈
Estefania Gaona Garrido
🇲🇽MEX·1492
4.5pts·1806perf+98.4
🥉
Sara Victoria Ruiz Arce
🇲🇽MEX·1734
4.5pts·1717perf-2.8

How it unfolded

Top 6 · 6 rounds

Alondra Bagatella Avalos led from R5; +1.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.

Co-leaders

Bagatella Avalos6Gaona Garrido4.5Ruiz Arce4.5Hernandez Lopez4.5Navarro Cruz4.5Cruz Galvan4.5

R5–R6 · LEAD HELD

Alondra Bagatella Avalos never relinquished the lead after R5; final gap +1.5 over the runner-up.

R3 · HEAD-TO-HEAD · WINNER VS 2ND

Alondra Bagatella Avalos beat Estefania Gaona Garrido (White).

WIN STREAKS · 2 top finishers

Alondra Bagatella Avalos 6 wins (R1–R6)Sara Victoria Ruiz Arce 4 wins (R1–R4)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Alondra Bagatella Avalos	*	1	1	—
2Estefania Gaona Garrido	0	*	—	1
3Sara Victoria Ruiz Arce	0	—	*	—
4Sarahi Hernandez Lopez	—	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Bagatella Avalos, Alondra	1697	MEX	+12B	+24N	+2B	+4N	+3B	+7N	6.0	21.0	23.5	23.50	2351	+75.2
2	Gaona Garrido, Estefania	1492	MEX	+5B	+7N	−1N	=10B	+16N	+11B	4.5	21.5	24.5	16.75	1806	+98.4
3	Ruiz Arce, Sara Victoria	1734	MEX	+20N	+9B	+17N	+8B	−1N	=4B	4.5	21.5	24.5	16.25	1717	-2.8
4	Navarro Cruz, Hannah Rebeca	1483	MEX	+31N	+10B	+11N	−1B	+15N	=3N	4.5	20.5	22.0	13.75	1756	+56.4
5	Hernandez Lopez, Sarahi	1529	MEX	−2N	+21B	+25N	+17B	=11N	+10B	4.5	17.5	20.0	13.75	1708	+48.0
6	Cruz Galvan, Melyza	0	MEX	−10N	=31B	+30N	+19N	+13B	+15B	4.5	15.0	16.5	12.25	831	0.0
7	Camacho Chavez, Nirvana	1621	MEX	+21N	−2B	+9N	+16B	+8N	−1B	4.0	21.5	24.5	14.00	1680	+18.0
8	Morales Barcelo, Michell Sophia	1507	MEX	+37N	+18B	+29N	−3N	−7B	+20B	4.0	16.5	16.5	8.00	878	-22.0
9	Idarraga Patino, Valeria	1535	MEX	+34B	−3N	−7B	+37N	+33B	+22N	4.0	13.5	13.5	5.00	1644	+23.6
10	Rivas Rangel, Isabella Roxanne	1631	MEX	+6B	−4N	+24B	=2N	+26B	−5N	3.5	20.5	23.0	11.75	1414	-48.4
11	Dimas Godinez, Aranza De Jesus	1581	MEX	+28B	+27N	−4B	+22N	=5B	−2N	3.5	19.0	21.5	10.25	1551	-8.0
12	Inzunza Becerra, Alexa Lizbeth	1475	MEX	−1N	−15B	+36N	+18B	+27N	=16B	3.5	17.5	18.0	7.50	1585	+17.2
13	Hernandez Guerrero, Kimberly	0	MEX	−18N	+37B	=26N	+29B	−6N	+24B	3.5	14.5	14.5	5.75	1519	0.0
14	Reyes Populus, Liliana	1518	MEX	−29N	=35B	=31N	=25B	+28N	+32B	3.5	10.0	11.0	6.50	2275	+17.6
15	Arteaga De Lira, Maria Fernanda	0	MEX	−24B	+12N	+27B	+20N	−4B	−6N	3.0	18.0	20.5	9.00	1474	0.0
16	Malaquias Moreno, Jessyca Gisele	1621	MEX	=25B	+23N	+19B	−7N	−2B	=12N	3.0	18.0	20.5	9.00	1256	-54.8
17	Villar Velazquez, Maydi	1618	MEX	+32B	+33N	−3B	−5N	=24B	=23N	3.0	16.0	17.0	5.25	1314	-44.8
18	Padilla Munoz, Valeria Lizette	0	MEX	+13B	−8N	−22B	−12N	+36B	+33N	3.0	15.0	15.5	5.00	709	0.0
19	Peralta Isidro, Andrea Jatziry	0	MEX	=26N	+30B	−16N	−6B	=25N	+29B	3.0	14.5	16.5	6.50	821	0.0
20	Hernandez Gamiz, Jatzibe	0	MEX	−3B	+34N	+33B	−15B	+29N	−8N	3.0	14.5	15.5	4.00	1513	0.0
21	Pedraza Rodriguez, Valeri Itzayan	1475	MEX	−7B	−5N	+34B	−27N	+37B	+26N	3.0	14.5	14.5	3.50	1372	-20.4
22	Santos Ramos, Vanessa	1546	MEX	+35N	−29B	+18N	−11B	+32N	−9B	3.0	14.0	15.0	5.50	758	-38.8
23	FIDE 550026712	0	—	=30N	−16B	+35N	−32B	+31N	=17B	3.0	11.0	12.0	5.00	1427	0.0
24	Mireles Nunez, Naylea	1499	MEX	+15N	−1B	−10N	+31B	=17N	−13N	2.5	19.0	20.5	6.00	1376	-16.0
25	Ortega Acosta, Sofia	0	MEX	=16N	=26B	−5B	=14N	=19B	=27B	2.5	16.5	19.0	7.25	1439	0.0
26	Altamirano Ramirez, Aura	0	MEX	=19B	=25N	=13B	+28N	−10N	−21B	2.5	15.5	18.0	7.00	1402	0.0
27	Galindo Cruz, Lizeth	1437	MEX	+36N	−11B	−15N	+21B	−12B	=25N	2.5	15.5	16.0	4.75	1385	-8.4
28	Reyna Bermudez, Jimena Guadalupe	1475	MEX	−11N	+36B	=32N	−26B	−14B	+37N	2.5	11.5	11.5	1.25	750	-32.0
29	FIDE 29690455	0	—	+14B	+22N	−8B	−13N	−20B	−19N	2.0	17.0	20.0	6.50	1544	0.0
30	Gomez Cruz, Gema Sofia	0	MEX	=23B	−19N	−6B	−33N	+34B	=35N	2.0	12.5	13.5	3.00	1693	0.0
31	Zavaleta Jacinto, Dania Ximena	0	MEX	−4B	=6N	=14B	−24N	−23B	=36N	1.5	18.0	18.5	4.25	1227	0.0
32	FIDE 550022695	0	—	−17N	F	=28B	+23N	−22B	−14N	1.5	15.0	15.0	4.25	1217	0.0
33	Olive De Dios, Vanya	0	MEX	F	−17B	−20N	+30B	−9N	−18B	1.0	15.0	15.0	2.00	777	0.0
34	Lopez Arevalo, Luna Estephania	1673	MEX	−9N	−20B	−21N	+35B	−30N	F	1.0	13.0	13.0	1.00	705	-58.0
35	Eboli Aguirre, Jimena Estefania	0	MEX	−22B	=14N	−23B	−34N	F	=30B	1.0	12.5	12.5	2.75	1306	0.0
36	Arellano, Castellanos Ana Sofia	0	MEX	−27B	−28N	−12B	F	−18N	=31B	0.5	13.0	13.0	0.75	662	0.0
37	Osorno, Zempoalteca Frida	0	MEX	−8B	−13N	F	−9B	−21N	−28B	0.0	17.0	17.0	0.00	698	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Gaona Garrido, EstefaniaMEX
+98.4
4.5 pts · #2
2Bagatella Avalos, AlondraMEX
+75.2
6.0 pts · #1
3Navarro Cruz, Hannah RebecaMEX
+56.4
4.5 pts · #7

Top rating losers

1Lopez Arevalo, Luna EstephaniaMEX
-58.0
1.0 pts · #28
2Malaquias Moreno, Jessyca GiseleMEX
-54.8
3.0 pts · #27
3Rivas Rangel, Isabella RoxanneMEX
-48.4
3.5 pts · #12

Biggest upsets

R3+198 Elo gap
Pedraza Rodriguez, Valeri Itzayan1475 beat Lopez Arevalo, Luna Estephania1673
R2+148 Elo gap
Navarro Cruz, Hannah Rebeca1483 beat Rivas Rangel, Isabella Roxanne1631
R1+138 Elo gap
Idarraga Patino, Valeria1535 beat Lopez Arevalo, Luna Estephania1673