Olimpiada Nacional 2026. Region IV. Sub 12 Fem
9 players participated in this 5-round tournament, held from 18 Mar 2026 to 20 Mar 2026 in MOR, Cuernavaca, Mexico. Top 10 Elo average was 519, and top seed was Alondra Bagatella Avalos (🇲🇽 MEX, 1654).
Alondra Bagatella Avalos (🇲🇽 MEX, 1654) won with 5.0/5, ahead of Andrea Jatziry Peralta Isidro (3.5) and Estefania Gaona Garrido (3.0). Bagatella Avalos won solo starting round 3.
The biggest upset came in round 1: Estefania Gaona Garrido (1443) beat Michelle Castillo Gonzalez (1570), a +127-point gap.
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How it unfolded
Top 6 · 5 roundsAlondra Bagatella Avalos led from R3; +1.5-point edge over the runner-up.
Alondra Bagatella Avalos never relinquished the lead after R3; final gap +1.5 over the runner-up.
Alondra Bagatella Avalos won 5 in a row (R1–R5).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Alondra Bagatella Avalos | * | — | 1 | 1 |
| 2Andrea Jatziry Peralta Isidro | — | * | 1 | — |
| 3Estefania Gaona Garrido | 0 | 0 | * | 1 |
| 4Luna Estephania Lopez Arevalo | 0 | — | 0 | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Bagatella Avalos, Alondra | 1654 | MEX | +5N | +8B | +3N | +6B | +4N | 5.0 | 11.5 | 12.0 | 12.00 | 2242 | +9.2 |
| 2 | Peralta Isidro, Andrea Jatziry | 0 | MEX | +7N | =6B | −4N | +8B | +3N | 3.5 | 9.5 | 10.0 | 5.75 | 1462 | 0.0 |
| 3 | Gaona Garrido, Estefania | 1443 | MEX | +9N | +4B | −1B | +5N | −2B | 3.0 | 14.5 | 15.0 | 6.50 | 1615 | +18.0 |
| 4 | Pedraza Rodriguez, Valeri Itzayan | 0 | MEX | +?B | −3N | +2B | +?N | −1B | 3.0 | 11.5 | 11.5 | 3.50 | 748 | 0.0 |
| 5 | Lopez Arevalo, Luna Estephania | 0 | MEX | −1B | +?N | +9B | −3B | +6N | 3.0 | 11.0 | 11.0 | 3.00 | 1432 | 0.0 |
| 6 | FIDE 550022717 | 0 | — | +?N | =2N | +7B | −1N | −5B | 2.5 | 12.5 | 12.5 | 2.75 | 854 | 0.0 |
| 7 | FIDE 29623383 | 0 | — | −2B | +9B | −6N | −?N | F | 1.0 | 6.5 | 6.5 | 0.50 | 1596 | 0.0 |
| 8 | FIDE 550022709 | 0 | — | F | −1N | −?B | −2N | =9N | 0.5 | 9.0 | 9.0 | 0.25 | 1422 | 0.0 |
| 9 | Castillo Gonzalez, Michelle | 1570 | MEX | −3B | −7N | −5N | F | =8B | 0.5 | 7.5 | 7.5 | 0.25 | 642 | -27.2 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Gaona Garrido, EstefaniaMEX+18.03.0 pts · #1
- 2Bagatella Avalos, AlondraMEX+9.25.0 pts · #3
- 3FIDE 296233830.01.0 pts · #2
- 1Castillo Gonzalez, MichelleMEX-27.20.5 pts · #7
- 2FIDE 296233830.01.0 pts · #2
- 3Pedraza Rodriguez, Valeri ItzayanMEX0.03.0 pts · #8
- R1+127 Elo gap