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North American School Chess Championship Tijuana-Mexico 2025. U13 Abs

Open SwissStandard

13 players participated in this 9-round tournament, held from 31 Oct 2025 to 04 Nov 2025 in B C, Tijuana, Mexico. 2 federations represented. Top 10 Elo average was 1712, and top seed was Pablo Elliott De Alba Boudreau (🇲🇽 MEX, 1828).

Gilberto Najera Herrera (🇲🇽 MEX, 1626) won with 7.0/9, ahead of Mateo Ruiz Gastelum (6.5) and Pablo Elliott De Alba Boudreau (6.5). Najera Herrera won solo starting round 8.

The biggest upset came in round 1: Santiago Ortiz Padilla (1513) beat Armando Zayd Gonzalez Cadena (1808), a +295-point gap.

Location
🇲🇽B C, Tijuana, Mexico
Dates
31 Oct 2025 → 04 Nov 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 9 rounds
Top seed
🇲🇽Pablo Elliott De Alba Boudreau1828
Avg top 10
1,712
Participants
13
Federations · 2 represented
🇲🇽Mexico×11
🇨🇦Canada×1
Top 3

How it unfolded

Top 6 · 9 rounds

Gilberto Najera Herrera led from R4; +0.5-point edge over the runner-up.

Co-leaders
3
2
3
1
1
1
2
1
1
2.54.579R1R2R3R4R5R6R7R8R9
R4–R9 · LEAD HELD

Gilberto Najera Herrera held the sole lead from R4 through R9 without losing it.

R6 · HEAD-TO-HEAD · WINNER VS 2ND

Gilberto Najera Herrera drew with Mateo Ruiz Gastelum (Black).

WIN STREAKS · 2 top finishers

Gilberto Najera Herrera 4 wins (R2–R5)Pablo Elliott De Alba Boudreau 3 wins (R7–R9)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Gilberto Najera Herrera*
½
½
1
2Mateo Ruiz Gastelum
½
*
½
½
3Pablo Elliott De Alba Boudreau
½
½
*—
4Ian Marco Martinez Nestor
0
½
—*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7R8R9PtsBu C1BuSBPerfΔ
1Najera Herrera, Gilberto1626MEX=3B+9N+5B+4N+6B=2N−7N+8B+11B7.038.540.530.001925+125.2
2Ruiz Gastelum, Mateo1806MEX+10B+5N=4B=6N=3B=1B+11N=7N+9B6.537.039.025.251865+30.0
3De Alba Boudreau, Pablo Elliott1828MEX=1N+8B−6N+11B=2N=5B+10N+12B+7B6.534.536.523.001793-8.4
4Martinez Nestor, Ian Marco1752MEX+12B+13N=2N−1B−11N=8N=9B+5B+6N5.533.534.018.251684-18.0
5Ortiz Padilla, Santiago1513MEX+7B−2B−1N+13N+9B=3N+6B−4NF4.537.537.515.251749+82.0
6Galaviz Medina, Ades Antares1745MEXF+12N+3B=2B−1N+11B−5N+10B−4B4.536.036.015.751694-17.2
7Gonzalez Cadena, Armando Zayd1808MEX−5N−10B=8NF+13B+12N+1B=2B−3N4.033.033.014.751529-72.0
8Perez Rodriguez, Edred Marek0MEX=9B−3N=7B+10N=12N=4BF−1N+13B4.030.530.59.751662+40.4
9Szeto, Jordan1691CAN=8N−1B+10N−12B−5NF=4N+13B−2N3.032.032.07.251512-48.0
10Rascon Peralta, Bolivar Ernesto1618MEX−2N+7N−9B−8BF+13N−3B−6NF2.031.031.04.501535-19.2
11Espinosa Guzman, Alfonso Naim1730MEXFF+13B−3N+4B−6N−2BF−1N2.030.530.56.001509-54.4
12Garcia Guzman, Luis Roberto0MEX−4N−6BF+9N=8B−7B=13N−3NF2.030.030.05.2515220.0
13FIDE 5500095590—F−4B−11N−5B−7N−10B=12B−9N−8N0.527.027.01.008830.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
North American School Chess Championship Tijuana-Mexico 2025. U13 Abs — B C, Tijuana, Mexico | Chess Tournament Results | ChessStats