CChessStats

I Campeonato Nacional e Internacional de Ajedrez Monterrey 2025 - Sub 09

Open SwissStandard

14 players participated in this 6-round tournament, held from 16 Oct 2025 to 19 Oct 2025 in N L, Monterrey, Mexico. Top 10 Elo average was 464, and top seed was David Alfredo Sahagun Diaz (🇲🇽 MEX, 1608).

David Alfredo Sahagun Diaz (🇲🇽 MEX, 1608) won with 5.5/6, ahead of Carlos Quintanilla Corona (5.0) and Carlos Derek Matuz Espinoza (4.0). Sahagun Diaz clinched sole first place in the final round.

Location
🇲🇽N L, Monterrey, Mexico
Dates
16 Oct 2025 → 19 Oct 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 6 rounds
Top seed
Avg top 10
464
Participants
14
Federations · 1 represented
🇲🇽Mexico×7
Top 3

How it unfolded

Top 6 · 6 rounds

David Alfredo Sahagun Diaz led from R6; +0.5-point edge over the runner-up.

Co-leaders
10
4
2
1
1
1
1.534.56R1R2R3R4R5R6Sahagun Diaz takes lead
R6 · LEADER CHANGE19 Oct

David Alfredo Sahagun Diaz takes the sole lead (5.5/6).

R6 · HEAD-TO-HEAD · WINNER VS 2ND

David Alfredo Sahagun Diaz beat Carlos Quintanilla Corona (White).

WIN STREAKS · 2 top finishers

David Alfredo Sahagun Diaz 3 wins (R4–R6)Carlos Quintanilla Corona 5 wins (R1–R5)

Key matchups · top 4

Head-to-head between the four finishers

Grille américaine

#PlayerEloFedR1R2R3R4R5R6PtsBu C1BuSBPerfΔ
1Sahagun Diaz, David Alfredo1608MEX+11N+7B=4N+3B+5N+2B5.519.521.019.251689+4.8
2Quintanilla Corona, Carlos0MEX+?B+3B+9N+5B+4N1N5.019.519.514.0015650.0
3Matuz Espinoza, Carlos Derek0MEX+?B2N+6B1N+?B+?N4.014.014.03.508430.0
4Chapa Charles, Alexis Daniel1471MEX+13B+6N=1B+10N2B8N3.520.021.09.751643+10.8
5Salazar Amaro, Pedro Miguel1556MEX+12B+14N+8B2N1B=9N3.518.018.56.50843-15.6
6FIDE 296877800+?N4B3N+11B+14B=7N3.513.013.03.756320.0
7Gastelum Valencia, Mario0MEX+?B1N+?B?N+10B=6B3.511.511.54.258430.0
8FIDE 296308350F+?B5N+?B=?N+4B3.57.07.03.5014960.0
9FIDE 296940600+?BF2B+14N=?N=5B3.09.09.02.2515600.0
10FIDE 296357560?N+12B+?N4B7N=?B2.58.08.01.006320.0
11FIDE 2965757101B+?N?B6N=12B?N1.510.010.00.508430.0
12FIDE 55000085305N10N?B=13B=11N?N1.08.58.51.257600.0
13Aguirre Medina, Alejandro0MEX4N?N?B=12N=?B?N1.04.54.50.506320.0
14FIDE 296877050F5B=?N9B6N?N0.510.010.00.007600.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers