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

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32 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 1809, and top seed was Miguel Angel Carrillo Fonseca (🇲🇽 MEX, 1964).

Jesus Aaron Enriquez Corona (🇲🇽 MEX, 1827) won with 6.0/7, ahead of Amaury Diaz Cortes (5.0) and Miguel Angel Carrillo Fonseca (5.0). Enriquez Corona won solo starting round 4.

The biggest upset came in round 2: Luis Felipe Fabian Rojas (1584) beat Jose Isaac Reyes Rivera (1903), a +319-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

🇲🇽Miguel Angel Carrillo Fonseca1964

Avg top 10

1,809

Participants

Federations · 1 represented

🇲🇽Mexico×31

Top 3

🥇
Jesus Aaron Enriquez Corona
🇲🇽MEX·1827
6.0pts·2015perf+58.0
🥈
Amaury Diaz Cortes
🇲🇽MEX·1897
5.0pts·1890perf+2.4
🥉
Miguel Angel Carrillo Fonseca
🇲🇽MEX·1964
5.0pts·1896perf-16.4

How it unfolded

Top 6 · 7 rounds

Jesus Aaron Enriquez Corona led from R4; +1.0-point edge over the runner-up.

Co-leaders

Enriquez Corona6Diaz Cortes5Carrillo Fonseca5Briano Quezada5Genovez Hernandez5Reyes Rivera5

R4–R7 · LEAD HELD

Jesus Aaron Enriquez Corona never relinquished the lead after R4; final gap +1.0 over the runner-up.

R5 · HEAD-TO-HEAD · WINNER VS 2ND

Jesus Aaron Enriquez Corona beat Amaury Diaz Cortes (Black).

WIN STREAKS · 2 top finishers

Jesus Aaron Enriquez Corona 5 wins (R1–R5)Miguel Angel Carrillo Fonseca 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Jesus Aaron Enriquez Corona	*	1	1	—
2Amaury Diaz Cortes	0	*	½	1
3Miguel Angel Carrillo Fonseca	0	½	*	—
4Saulo Jafir Briano Quezada	—	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	Pts	Bu C1	Bu	SB	Perf	Δ
1	Enriquez Corona, Jesus Aaron	1827	MEX	+28B	+24N	+9B	+3B	+2N	−7N	+8B	6.0	25.0	27.0	22.50	2015	+58.0
2	Diaz Cortes, Amaury	1897	MEX	+18N	+29B	=10N	+6B	−1B	+11N	=3N	5.0	27.0	29.0	18.50	1890	+2.4
3	Carrillo Fonseca, Miguel Angel	1964	MEX	+26B	+13N	+7B	−1N	+24B	=8N	=2B	5.0	26.0	28.0	17.25	1896	-16.4
4	Reyes Rivera, Jose Isaac	1903	MEX	+17N	−22B	=6N	+25B	=5N	+9B	+10N	5.0	23.5	25.5	18.00	1632	-52.0
5	Genovez Hernandez, Cristian Alexis	1588	MEX	+25N	−8B	+30B	=11N	=4B	+19N	+15B	5.0	22.0	23.5	14.50	1778	+36.8
6	Briano Quezada, Saulo Jafir	1623	MEX	+31B	+30N	=4B	−2N	+17B	+18N	=7B	5.0	22.0	23.5	13.75	1788	+32.4
7	Rito Gonzalez, Alexander	1761	MEX	F	+12B	−3N	+22B	+10N	+1B	=6N	4.5	27.0	29.5	19.00	1899	+43.2
8	Quiroz Frias, Alvaro	1841	MEX	+27B	+5N	=22N	=10B	+9N	=3B	−1N	4.5	26.5	28.5	16.75	1760	-20.0
9	Hernandez Marquez, Ramses Ali	0	MEX	+16B	+23N	−1N	+12B	−8B	−4N	+18B	4.0	26.0	28.5	13.00	1713	0.0
10	Orduno Gonzalez, Omar	1731	MEX	+15B	+32N	=2B	=8N	−7B	+24N	−4B	4.0	24.5	25.5	11.25	1707	-6.4
11	Hernandez Gonzalez, Ronaldo	1747	MEX	−12N	+19B	+18N	=5B	+22N	−2B	=14N	4.0	24.0	26.5	13.00	1689	-20.0
12	Lopez Carballo, Caleb	1508	MEX	+11B	−7N	+13B	−9N	−16B	+26N	+24B	4.0	22.0	24.0	12.00	1757	+64.8
13	Ayestas Zegarra, Maximo Steven	1735	MEX	+20N	−3B	−12N	−17B	+23N	+21B	+22N	4.0	20.5	23.0	11.00	1717	-3.2
14	Galvez Guzman, Sergio Moises	1684	MEX	−32B	+27N	−24B	+23N	=19B	+16N	=11B	4.0	17.0	18.0	11.50	1719	+12.0
15	Montejo Pons, Francisco Javier	0	MEX	−10N	=17B	=19N	=20B	+25N	+29B	−5N	3.5	20.0	22.0	8.50	1548	0.0
16	Cardenas Lopez, Pablo Fernando	1688	MEX	−9N	=20B	−25N	+28B	+12N	−14B	+30B	3.5	19.0	20.5	9.00	1648	-8.8
17	Xolo Perez, Luis Fernando	0	MEX	−4B	=15N	+31B	+13N	−6N	−22B	=28B	3.0	22.0	23.5	8.25	1519	0.0
18	Fabian Gonzalez, Jeisel Emmanuel	1590	MEX	−2B	+28N	−11B	+30N	+29N	−6B	−9N	3.0	22.0	23.5	5.50	1608	+2.4
19	Facio Palos, Carlos Daniel	1620	MEX	=23B	−11N	=15B	+32N	=14N	−5B	=27N	3.0	21.0	22.0	7.00	1458	-43.2
20	Ayestas Zegarra, Bryan Rey Ky	1522	MEX	−13B	=16N	=26B	=15N	=21N	=27B	=23N	3.0	18.5	20.5	8.25	1512	-4.4
21	Torres Ayala, Nahum Alfredo	1480	MEX	F	=31N	=23B	=26N	=20B	−13N	+25B	3.0	18.0	19.5	6.50	1459	-4.4
22	Fabian Rojas, Luis Felipe	1584	MEX	F	+4N	=8B	−7N	−11B	+17N	−13B	2.5	25.0	25.0	10.25	1648	+13.6
23	Caballero Gaytan, Hiram Ariel	1494	MEX	=19N	−9B	=21N	−14B	−13B	+31N	=20B	2.5	21.0	22.5	6.00	1459	-10.4
24	Orozco Galeana, Joshua Aaron	1495	MEX	F	−1B	+14N	+29B	−3N	−10B	−12N	2.0	25.0	25.0	6.00	1589	+22.4
25	Acosta Osio, Roberto Alejandro	0	MEX	−5B	=26N	+16B	−4N	−15B	=30N	−21N	2.0	22.0	23.5	5.25	1472	0.0
26	Benitez Soto, Gabriel De Jesus	0	MEX	−3N	=25B	=20N	=21B	=27N	−12B	−29N	2.0	19.0	21.0	5.00	1413	0.0
27	Cesar Vidal, Fernando	1522	MEX	−8N	−14B	=28N	F	=26B	=20N	=19B	2.0	18.5	20.0	5.00	1484	-13.2
28	Mendez Marquez, Leonardo David	1496	MEX	−1N	−18B	=27B	−16N	F	+32B	=17N	2.0	18.5	18.5	3.50	1335	-28.0
29	Velazquez Conde, Mateo	1639	MEX	F	−2N	+32B	−24N	−18B	−15N	+26B	2.0	16.5	16.5	3.00	861	-57.6
30	Palafox Lobato, Santiago	0	MEX	F	−6B	−5N	−18B	+32N	=25B	−16N	1.5	19.5	19.5	2.00	822	0.0
31	FIDE 550021303	0	—	−6N	=21B	−17N	F	F	−23B	+32N	1.5	16.5	16.5	2.50	1259	0.0
32	Porras Garcia, Cesar Gabriel	0	MEX	+14N	−10B	−29N	−19B	−30B	−28N	−31B	1.0	16.5	18.0	4.00	1394	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Lopez Carballo, CalebMEX
+64.8
4.0 pts · #10
2Enriquez Corona, Jesus AaronMEX
+58.0
6.0 pts · #1
3Rito Gonzalez, AlexanderMEX
+43.2
4.5 pts · #3

Top rating losers

1Velazquez Conde, MateoMEX
-57.6
2.0 pts · #31
2Reyes Rivera, Jose IsaacMEX
-52.0
5.0 pts · #19
3Facio Palos, Carlos DanielMEX
-43.2
3.0 pts · #21

Biggest upsets

R2+319 Elo gap
Fabian Rojas, Luis Felipe1584 beat Reyes Rivera, Jose Isaac1903
R1+239 Elo gap
Lopez Carballo, Caleb1508 beat Hernandez Gonzalez, Ronaldo1747
R3+227 Elo gap
Lopez Carballo, Caleb1508 beat Ayestas Zegarra, Maximo Steven1735