CChessStats

1er Nacional de Ajedrez "Mtro. Mario Jordan Velazquez Coello" In Memoriam Cat. Mario Jordan

SwissStandard

23 players participated in this 6-round tournament, held from 24 Oct 2025 to 26 Oct 2025 in TAB, Villahermosa, Mexico. 10 titled players from 2 federations. Top 10 Elo average was 2228, and top seed was Julio Cesar Diaz Rosas (🇲🇽 MEX, IM, 2384).

Julio Cesar Diaz Rosas (🇲🇽 MEX, IM, 2384) won with 5.0/6, ahead of Atlas Adomaytis Galaviz Medina (4.5) and David Avila Miguel (4.5). Diaz Rosas shared the lead from round 5 and broke clear in the final round.

The biggest upset came in round 1: Miguel Angel Carrillo Fonseca (1856) beat David Avila Miguel (2138), a +282-point gap.

Location
🇲🇽TAB, Villahermosa, Mexico
Dates
24 Oct 2025 → 26 Oct 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 6 rounds
Top seed
🇲🇽IMJulio Cesar Diaz Rosas2384
Avg top 10
2,228
Participants
23
Titled players · 10
IM×1
FM×5
CM×3
WFM×1
Federations · 2 represented
🇲🇽Mexico×22
🇨🇺Cuba×1
Top 3

How it unfolded

Top 6 · 6 rounds

IM Julio Cesar Diaz Rosas led from R6; +0.5-point edge over the runner-up.

Co-leaders
9
3
4
1
2
1
1.534.56R1R2R3R4R5R6Diaz Rosas takes lead
Diaz Rosas5Galaviz Medina4.5Avila Miguel4.5Cofre Archibold4Palma Villanueva3.5Guillen Cristobal3.5— ex-leaders:Duarte Barahonaled R4, #9
R6 · LEADER CHANGE26 Oct

IM Julio Cesar Diaz Rosas takes the sole lead (5.0/6).

R3 · HEAD-TO-HEAD · WINNER VS 2ND

IM Julio Cesar Diaz Rosas drew with CM Atlas Adomaytis Galaviz Medina (Black).

WIN STREAKS · 2 top finishers

IM Julio Cesar Diaz Rosas 3 wins (R4–R6)David Avila Miguel 3 wins (R4–R6)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1IMJulio Cesar Diaz Rosas*
½
——
2CMAtlas Adomaytis Galaviz Medina
½
*—
½
3David Avila Miguel——*—
4FMNestor Cofre Archibold—
½
—*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6PtsBu C1BuSBPerfΔ
1Diaz Rosas, Julio CesarIM2384MEX+13B=6N=2N+10B+9N+5B5.018.521.517.502427+3.1
2Galaviz Medina, Atlas AdomaytisCM2160MEX+22B+7N=1B=9B+5N=4N4.519.520.013.752415+40.4
3Avila Miguel, David2138MEX−14N+11N=19B+15B+8N+7B4.515.517.013.752233+16.2
4Cofre Archibold, NestorFM2269MEX+20N=10B−8N+14B+12N=2B4.017.519.011.502188-9.0
5Duarte Barahona, Raul AlejandroCM2197MEX+16N+14B=9N+8B−2B−1N3.519.021.09.752201+4.0
6De La O Lopez, Juan Andres2151MEX+15N=1B=10N+13B−7N=9B3.518.521.011.502223+12.2
7Gutierrez Delgado, Yusuan A.FM2314CUB+12N−2B=15N+17B+6B−3N3.518.520.510.252113-13.1
8Benitez Lozano, JavierFM2297MEX=11B+17N+4B−5N−3B+15N3.518.020.010.252135-20.6
9Palma Villanueva, Miguel TadeoFM2267MEX+23B+19N=5B=2N−1B=6N3.518.018.07.252171-11.2
10Navarrete Mendez, Gonzalo AlbertoFM2098MEX+21B=4N=6B−1N+18B=13N3.517.518.07.752116+3.6
11Munoz Morales, Angel Bernardo2008MEX=8N−3B=14N+16B=13N+19B3.515.517.08.002077+21.6
12Guillen Cristobal, Sandra NWFM2012MEX−7B=22N+21B+19N−4B+14N3.512.012.54.752048+5.8
13Orta Ruz, Andre Fernando2049MEX−1N+16B+18N−6N=11B=10B3.017.519.57.502037-6.4
14Carrillo Fonseca, Miguel Angel1856MEX+3B−5N=11B−4N+20N−12B2.519.020.57.752035+46.8
15Juarez Dominguez, Aldo Alexis1883MEX−6B+23N=7B−3N+21N−8B2.515.515.52.252025+16.0
16Del Carpio Gallegos, Gonzalo1900MEX−5B−13N+22B−11N+23B−18N2.012.512.50.501940+4.2
17Amezcua Luria, JesusCM1961MEXF−8B+20N−7N−19B+21B2.010.510.52.001960-3.2
18Lara Barrientos, Albino0MEXFF−13B+23N−10N+16B2.08.58.52.0019890.0
19Arcila Villanueva, Carlos1881MEXF−9B=3N−12B+17N−11N1.517.017.04.251928+3.6
20Salazar Reyes, Diego1943MEX−4B=21N−17B+22N−14BF1.59.59.50.751794-39.9
21Melo Vazquez, Nicolas1728MEX−10N=20B−12NF−15B−17N0.513.013.00.751613-19.6
22Ortiz Hernandez, Ricardo Paul1900MEX−2N=12B−16N−20BFF0.511.511.51.751682-19.4
23Velazquez Parra, Jordan1908MEX−9N−15BF−18B−16NF0.011.511.50.001217-45.6

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets