CChessStats

LXXI Campeonato Nacional e Internacional Abierto Mexicano de Ajedrez. Sub 18 Fem

Open SwissStandard

26 players participated in this 7-round tournament, held from 01 Apr 2026 to 05 Apr 2026 in QRO, Queretaro, Mexico. Top 10 Elo average was 1570, and top seed was Ivana Daniela May Sanchez (🇲🇽 MEX, 1698).

Ivana Daniela May Sanchez (🇲🇽 MEX, 1698) won with 6.0/7, ahead of Ariadna Ortega Teoba (5.0) and America Zuley Rodriguez Santana (5.0). May Sanchez took the lead from round 6.

The biggest upset came in round 7: Fernanda Baleriano Sandoval (1500) beat Isis Gonzalez Castro (1684), a +184-point gap.

Location
🇲🇽QRO, Queretaro, Mexico
Dates
01 Apr 2026 → 05 Apr 2026
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 7 rounds
Top seed
🇲🇽Ivana Daniela May Sanchez1698
Avg top 10
1,570
Participants
26
Federations · 1 represented
🇲🇽Mexico×17
Top 3

How it unfolded

Top 6 · 7 rounds

Ivana Daniela May Sanchez led from R3; +1.0-point edge over the runner-up.

Co-leaders
11
5
1
3
1
1
1
23.55.57R1R2R3R4R5R6R7Ortega Teoba takes leadMay Sanchez takes lead
May Sanchez6Ortega Teoba5Rodriguez Santana5Baleriano Sandoval5Villalobos Rendon5Zamora Marquez4.5
R5 · LEADER CHANGE03 Apr

Ariadna Ortega Teoba takes the sole lead (4.5/5).

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Ivana Daniela May Sanchez lost to Ariadna Ortega Teoba (White).

2× WIN STREAK · 3+3 wins

Ivana Daniela May Sanchez posted 3 in a row (R1–R3) and 3 in a row (R5–R7) — total 6 wins.

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Ivana Daniela May Sanchez*
0
1
1
2Ariadna Ortega Teoba
1
*
½
—
3America Zuley Rodriguez Santana
0
½
*—
4Fernanda Baleriano Sandoval
0
——*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1May Sanchez, Ivana Daniela1698MEX+8N+4B+10N−2B+3B+9N+7B6.028.032.027.001793+24.0
2Ortega Teoba, Ariadna1601MEX+9N+16B=14N+1N+7B−6B=3N5.027.030.021.501733+35.2
3Rodriguez Santana, America Zuley1507MEX+26N=6B+22N+14B−1N+8N=2B5.025.025.014.251642+28.8
4Baleriano Sandoval, Fernanda1500MEX+17B−1N+23B−13N+16N+14B+6N5.023.025.015.501691+20.0
5Villalobos Rendon, Liliana1562MEX+23B−10N−7B+17N+11B+18N+9B5.022.524.516.001379-29.6
6Gonzalez Castro, Isis1684MEX+11B=3N+13B−7N+22B+2N−4B4.527.029.017.001544-37.2
7Zamora Marquez, Alondra Sarahi1526MEX+19N=22B+5N+6B−2N+15B−1N4.526.028.016.001667+47.2
8Reyes Duran, Ana Sofia0MEX−1B+26N+16N+15B=14N−3B+13N4.523.523.511.0014540.0
9Nelo Lopez, Yuliana1504MEX−2B+17N+24B+18B+13N−1B−5N4.025.527.511.50820-41.6
10Almaraz Aguilar, Danna Guadalupe1481MEX+21N+5B−1B−22N−15N+19B+14N4.022.024.013.001498+3.6
11Lopez Alvarez, Iyari0MEX−6N+19B−15N+25B−5N+20B+22B4.019.521.08.5014880.0
12FIDE 5500254570—−13B−20N−19N+26B+21N+25B+15N4.015.515.57.0015020.0
13Lara Duarte, Evelyn Giselle0MEX+12N+15B−6N+4B−9B=22N−8B3.525.027.013.0015610.0
14FIDE 5500233730—+18N+25B=2B−3N=8B−4N−10B3.026.528.09.2512000.0
15Luevano Marquez, Azul Elizabeth1531MEX+20B−13N+11B−8N+10B−7N−12B3.024.527.010.501607+12.0
16Rodriguez Mateo, Joceline0MEXF−2N−8B+20N−4B+23N+18B3.022.022.07.5013890.0
17FIDE 5500254650—−4N−9B+21N−5B−19N+24N+23B3.021.023.06.5013170.0
18FIDE 5500231790—−14B+24N+20B−9N+23B−5B−16N3.019.521.56.5013770.0
19FIDE 5500002680—−7B−11N+12B−23N+17B−10N=24B2.521.523.58.007040.0
20Genovez Hernandez, Dulce Melissa1440MEX−15N+12B−18N−16B+25N−11N=21B2.519.521.06.751310-13.2
21Galvan Rodriguez, Camila Del Ange1475MEX−10B−23N−17B+24N−12B+26N=20N2.517.517.53.251268-21.6
22Chay Feliciano, Naomi Michelle1584MEXF=7N−3B+10B−6N=13B−11N2.025.525.58.001463-27.6
23FIDE 5500026780—−5N+21B−4N+19B−18N−16B−17N2.021.524.05.0013870.0
24FIDE 296364180—=25N−18B−9N−21B+26N−17B=19N2.016.516.52.006900.0
25FIDE 5500254730—=24B−14N+26B−11N−20B−12NF1.515.515.51.006400.0
26FIDE 5500254490—−3B−8B−25N−12N−24B−21BF0.019.519.50.006910.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets