LXXI Campeonato Nacional e Internacional Abierto Mexicano de Ajedrez. Sub 12 Var

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82 players participated in this 7-round tournament, held from 01 Apr 2026 to 05 Apr 2026 in QRO, Queretaro, Mexico. 2 federations represented. Top 10 Elo average was 1700, and top seed was Lamberto Cubillas Gonzalez (🇲🇽 MEX, 1784).

Derek Milan Gonzalez Romo (🇲🇽 MEX, 1745) won with 6.0/7, ahead of Emilio Campillo Soto (6.0) and Lamberto Cubillas Gonzalez (5.5). Gonzalez Romo won on tie-break after catching the field in the final round.

The biggest upset came in round 5: Santiago Montoya Medina (1520) beat Lamberto Cubillas Gonzalez (1784), a +264-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

🇲🇽Lamberto Cubillas Gonzalez1784

Avg top 10

1,700

Participants

Federations · 2 represented

🇲🇽Mexico×49

FIDE (no federation)×1

Top 3

🥇
Derek Milan Gonzalez Romo
🇲🇽MEX·1745
6.0pts·2369perf+54.0
🥈
Emilio Campillo Soto
🇲🇽MEX·1769
6.0pts·1777perf+2.4
🥉
Lamberto Cubillas Gonzalez
🇲🇽MEX·1784
5.5pts·1635perf-28.4

How it unfolded

Top 6 · 7 rounds

Tight race until R7; 2 players tied at 6.0/7, decided on Buchholz. Title race narrowed from 3 co-leaders at R4 to 2 at the finish.

Co-leaders

Gonzalez Romo6Campillo Soto6Cabrera Estrada5.5Cienfuegos Torres5.5Cubillas Gonzalez5.5Camargo Ortega5.5— ex-leaders:Montoya Medinaled R5–R6, #13

R7 · TIEBREAK CLUSTER

2 players finish on 6.0/7. Gonzalez Romo takes the title on Buchholz Cut1 (28.0).

WIN STREAKS · 3 top finishers

Derek Milan Gonzalez Romo 3+3 wins (R1–R3, R5–R7)Emilio Campillo Soto 4 wins (R4–R7)Angel Alexis Cabrera Estrada 3 wins (R3–R5)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Derek Milan Gonzalez Romo	*	—	—	1
2Emilio Campillo Soto	—	*	—	—
3Angel Alexis Cabrera Estrada	—	—	*	—
4Cristopher Alejandro Cienfuegos Torres	0	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	Pts	Bu C1	Bu	SB	Perf	Δ
1	Gonzalez Romo, Derek Milan	1745	MEX	+35N	+7B	+34N	−14B	+12N	+26B	+4N	6.0	28.0	31.5	27.00	2369	+54.0
2	Campillo Soto, Emilio	1769	MEX	+56B	+26N	−16B	+40N	+31B	+14N	+8B	6.0	25.5	28.5	24.00	1777	+2.4
3	Cubillas Gonzalez, Lamberto	1784	MEX	+23N	+18B	+17N	+28B	−4N	+9B	=5N	5.5	29.5	33.5	25.25	1635	-28.4
4	Montoya Medina, Santiago	1520	MEX	+67B	+60N	+11B	+13N	+3B	=8N	−1B	5.5	29.5	32.0	23.50	1839	+64.8
5	Cabrera Estrada, Angel Alexis	1572	MEX	+55B	=53N	+15B	+11N	+6B	=10N	=3B	5.5	29.0	32.0	25.00	1930	+91.2
6	Camargo Ortega, Ricardo	1562	MEX	+39N	+36B	+29N	=10B	−5N	+33B	+21N	5.5	26.0	29.5	21.50	1657	+19.2
7	Cienfuegos Torres, Cristopher Alejandro	1620	MEX	+79B	−1N	+70B	+45N	=27B	+22N	+15B	5.5	24.5	25.5	17.50	1726	+22.4
8	Flores Ojeda, Dante Vladimir	1694	MEX	=20B	+66N	+9B	+19N	+16B	=4B	−2N	5.0	30.0	32.5	21.50	1709	+2.0
9	Ramirez Martinez, Matias	0	MEX	+33N	+38B	−8N	+18B	+25B	−3N	+27B	5.0	27.0	30.5	20.00	1637	0.0
10	Hernandez Vargas, Mateo	1722	MEX	F	+54N	+27B	=6N	+14B	=5B	+16N	5.0	27.0	27.0	21.50	1788	+14.8
11	Puentes Barragan, Cesar Alexandro	1752	MEX	+59N	+52B	−4N	−5B	+57N	+29B	+26N	5.0	25.5	28.5	17.50	1679	-20.4
12	Duarte Cramer, Evelynn Renata	1590	MEX	+50B	+42N	+46B	=16N	−1B	=54N	+30B	5.0	25.0	28.0	18.25	1630	+10.8
13	Felix Cornejo, Roberto	0	MEX	=66B	+30N	+48B	−4B	+37N	=27N	+54B	5.0	23.5	26.0	17.25	1534	0.0
14	Huerta Morales, Alejandro	0	MEX	+65B	+40N	+25B	+1N	−10N	−2B	=18N	4.5	29.5	32.5	19.25	1597	0.0
15	Medina Anacleto, Cesar Antonio	1631	MEX	+43N	=37B	−5N	+55N	+24B	+17B	−7N	4.5	27.0	30.0	17.25	1417	-34.0
16	Flores Moreno, Jose Patricio	1525	MEX	+73N	+78B	+2N	=12B	−8N	+36B	−10B	4.5	26.5	27.5	15.00	1607	+14.4
17	Steinmann, Andre	0	FID	+63B	+44N	−3B	=24N	+23B	−15N	+50B	4.5	26.0	29.0	16.75	908	0.0
18	Morales Leija, Leonardo Nicolas	1500	MEX	+80B	−3N	+64B	−9N	+45B	+55N	=14B	4.5	24.5	24.5	11.75	984	-6.4
19	Martinez Guzman, Diego	1640	MEX	=30B	+20N	+53B	−8B	−33N	+66N	+36B	4.5	24.0	26.5	16.00	894	-16.8
20	Esquivel Ibarra, Bruno Francisco	0	MEX	=8N	−19B	+47N	=32B	=?N	+46N	+34B	4.5	24.0	24.0	15.00	1613	0.0
21	Cruz Mendez, Jaime Mauricio	0	MEX	−26B	+56N	+42B	=54N	+46B	+28N	−6B	4.5	23.5	26.5	15.50	1578	0.0
22	Jimenez Mendoza, Jose Leonardo	1577	MEX	+57N	−29B	+37N	=33B	+43N	−7B	+35N	4.5	23.5	26.5	15.25	1509	-14.8
23	FIDE 550024949	0	—	−3B	+62N	+75N	+38B	−17N	=34B	+33N	4.5	23.5	24.5	12.75	1471	0.0
24	FIDE 550021346	0	—	+74N	+?B	−28N	=17B	−15N	+43B	+41N	4.5	21.5	21.5	10.75	1551	0.0
25	FIDE 550002198	0	—	+?N	+75B	−14N	+35B	−9N	=32B	+39N	4.5	21.5	21.5	10.00	1500	0.0
26	Ibarra Uribe, Rene	1569	MEX	+21N	−2B	+57N	+59B	+28N	−1N	−11B	4.0	28.5	31.5	14.50	1625	+17.2
27	Lopez Cabrera, Christian	1571	MEX	+68N	+47B	−10N	+29B	=7N	=13B	−9N	4.0	28.0	30.5	15.25	1614	+6.8
28	Lopez Vargas, Juan Pablo	1568	MEX	+69B	+31N	+24B	−3N	−26B	−21B	+57N	4.0	25.5	28.0	14.00	1487	-13.6
29	Quiroz Ventura, Marco Said	1500	MEX	+72B	+22N	−6B	−27N	+64B	−11N	+55B	4.0	25.0	27.0	12.50	1423	-15.6
30	FIDE 29622000	0	—	=19N	−13B	=41N	+71B	+61N	+38B	−12N	4.0	24.5	26.5	12.50	1422	0.0
31	Jim Gonzalez, Jose Luis	0	MEX	+70N	−28B	+77N	+34B	−2N	=35B	=32N	4.0	23.0	24.0	10.25	1502	0.0
32	FIDE 29630541	0	—	−34B	=72N	+?B	=20N	+40B	=25N	=31B	4.0	22.0	22.0	11.00	744	0.0
33	FIDE 550024957	0	—	−9B	+67N	+63B	=22N	+19B	−6N	−23B	3.5	27.0	29.5	12.25	1593	0.0
34	Sarue Perez, Daniel	1544	MEX	+32N	+45B	−1B	−31N	+56B	=23N	−20N	3.5	26.5	29.5	12.75	1646	+10.4
35	FIDE 550002147	0	—	−1B	+?N	+60B	−25N	+44B	=31N	−22B	3.5	25.5	25.5	8.50	1471	0.0
36	Guevara Hernandez, Erick Enrique	0	MEX	+?B	−6N	+44B	=46N	+49B	−16N	−19N	3.5	25.0	25.0	8.75	1429	0.0
37	Vargas Alejandre, Manuel Keneth	0	MEX	+51B	=15N	−22B	+65N	−13B	−50N	+67B	3.5	24.0	26.5	11.25	1411	0.0
38	FIDE 29677637	0	—	+62B	−9N	+50B	−23N	+59B	−30N	=45B	3.5	23.5	26.5	11.25	1453	0.0
39	Garcia Lopez, Franco	1452	MEX	−6B	=51N	+72B	+53N	−54B	+48N	−25B	3.5	23.5	25.5	10.75	736	-30.8
40	FIDE 550001973	0	—	+41N	−14B	+78N	−2B	−32N	+?B	=44N	3.5	22.5	22.5	6.25	1618	0.0
41	FIDE 550014889	0	—	−40B	=65N	=30B	+70N	+42B	=49N	−24B	3.5	22.0	24.0	10.75	1588	0.0
42	Oropeza Duenas, Joshua Iker	1491	MEX	+71N	−12B	−21N	+68B	−41N	+63B	=47N	3.5	22.0	24.0	9.25	790	-14.4
43	Villanueva Garcia, Andrew	1435	MEX	−15B	+80N	=49B	+48N	−22B	−24N	+74B	3.5	22.0	22.0	6.75	1344	-11.6
44	FIDE 29686725	0	—	+?N	−17B	−36N	+52B	−35N	+56N	=40B	3.5	21.5	21.5	8.25	1600	0.0
45	Chavez Huerta, Mateo	0	MEX	+49B	−34N	+?N	−7B	−18N	+77B	=38N	3.5	21.5	21.5	6.25	1503	0.0
46	Davis Villarreal, Miguel	1520	MEX	+82N	+77B	−12N	=36B	−21N	−20B	+62B	3.5	21.5	21.5	5.75	790	-16.0
47	FIDE 29662001	0	—	+61B	−27N	−20B	−56N	+70B	+59N	=42B	3.5	21.0	23.0	9.75	1423	0.0
48	FIDE 550002325	0	—	=58N	+?B	−13N	−43B	+51N	−39B	+68N	3.5	21.0	21.0	7.50	644	0.0
49	Gomez Quintero, Hector Arturo	1644	MEX	−45N	+58B	=43N	+66B	−36N	=41B	=53N	3.5	20.5	23.0	10.75	1435	-10.8
50	Sias Arenas, Mauro Esau	0	MEX	−12N	+71B	−38N	+76B	=?N	+37B	−17N	3.5	19.5	19.5	6.50	790	0.0
51	Gonzalez Flores, Alexander	0	MEX	−37N	=39B	=58N	=?B	−48B	+70N	+66B	3.5	18.0	18.0	7.75	1452	0.0
52	Mendoza Paredes, Santiago	1574	MEX	+76B	−11N	−55B	−44N	+78B	=67N	+69B	3.5	17.5	18.5	5.75	952	-10.8
53	Muneton Gutierrez, Emmanuel	0	MEX	+81N	=5B	−19N	−39B	+?N	=?B	=49B	3.5	17.0	17.0	4.50	1426	0.0
54	Ramirez Rivera, Paris Gael	1510	MEX	F	−10B	+68N	=21B	+39N	=12B	−13N	3.0	25.5	25.5	10.75	1588	+12.0
55	Campos Moreno, Francisco Leonardo	0	MEX	−5N	+?B	+52N	−15B	+58N	−18B	−29N	3.0	25.0	25.0	6.50	1315	0.0
56	Yanez Vazquez, Nicolas	1546	MEX	−2N	−21B	+80N	+47B	−34N	−44B	+77N	3.0	22.0	22.0	4.50	857	-28.8
57	Gomez Tolentino, Andres	1482	MEX	−22B	+76N	−26B	+81N	−11B	+60N	−28B	3.0	21.5	21.5	4.00	817	-52.0
58	Parra Gutierrez, Luis	0	MEX	=48B	−49N	=51B	+60N	−55B	−62N	+71B	3.0	19.5	21.5	8.50	844	0.0
59	Villanueva Garcia, Iker	1433	MEX	−11B	+79N	+81B	−26N	−38N	−47B	+75N	3.0	18.0	18.0	2.00	861	-18.0
60	FIDE 550024965	0	—	+?N	−4B	−35N	−58B	+73N	−57B	+?N	3.0	17.0	17.0	2.00	1365	0.0
61	FIDE 5195250	0	—	−47N	−68B	+?B	+67N	−30B	−64N	+79N	3.0	16.5	16.5	3.50	1487	0.0
62	Ramirez Chavez, Alexis	0	MEX	−38N	−23B	−?N	+80B	+75N	+58B	−46N	3.0	15.5	15.5	4.00	720	0.0
63	FIDE 29620783	0	—	−17N	+?B	−33N	−?B	+71N	−42N	+76B	3.0	14.5	14.5	3.00	730	0.0
64	FIDE 29656290	0	—	−?N	+74B	−18N	+77B	−29N	+61B	−?N	3.0	14.0	14.0	5.50	723	0.0
65	FIDE 550024922	0	—	−14N	=41B	+?N	−37B	+?N	=?B	−?N	3.0	11.5	11.5	1.75	768	0.0
66	Perez Sandoval, Maximo Matias	0	MEX	=13N	−8B	+73N	−49N	+72B	−19B	−51N	2.5	23.5	25.5	6.50	859	0.0
67	FIDE 29621623	0	—	−4N	−33B	+74N	−61B	+76N	=52B	−37N	2.5	20.5	21.5	4.25	1354	0.0
68	FIDE 29671892	0	—	−27B	+61N	−54B	−42N	=74B	+72N	−48B	2.5	19.0	20.5	5.75	724	0.0
69	FIDE 550024930	0	—	−28N	−70B	−71N	=73B	+80N	+?B	−52N	2.5	13.5	13.5	1.00	771	0.0
70	FIDE 550025007	0	—	−31B	+69N	−7N	−41B	−47N	−51B	+80B	2.0	22.5	22.5	2.50	820	0.0
71	FIDE 29656508	0	—	−42B	−50N	+69B	−30N	−63B	+?N	−58N	2.0	19.5	19.5	2.50	691	0.0
72	Osorio Araiza, Patricio	0	MEX	−29N	=32B	−39N	+75B	−66N	−68B	=?N	2.0	17.5	17.5	3.00	676	0.0
73	FIDE 550024990	0	—	−16B	=?N	−66B	=69N	−60B	−76N	+81B	2.0	13.5	13.5	1.25	725	0.0
74	Pacheco Martinez, Emiliano	0	MEX	−24B	−64N	−67B	F	=68N	+?B	−43N	1.5	16.0	16.0	1.25	635	0.0
75	FIDE 29656567	0	—	F	−25N	−23B	−72N	−62B	+78N	−59B	1.0	18.0	18.0	1.00	633	0.0
76	FIDE 550011910	0	—	−52N	−57B	F	−50N	−67B	+73B	−63N	1.0	17.5	17.5	2.00	728	0.0
77	FIDE 550024973	0	—	F	−46N	−31B	−64N	+?B	−45N	−56B	1.0	17.0	17.0	0.00	733	0.0
78	FIDE 550025031	0	—	F	−16N	−40B	−?B	−52N	−75B	+?N	1.0	12.5	12.5	0.00	750	0.0
79	FIDE 550005545	0	—	−7N	−59B	−?N	−?B	F	+81N	−61B	1.0	11.5	11.5	0.00	707	0.0
80	FIDE 550024981	0	—	−18N	−43B	−56B	−62N	−69B	F	−70N	0.0	18.5	18.5	0.00	694	0.0
81	FIDE 29690382	0	—	−53B	F	−59N	−57B	−?N	−79B	−73N	0.0	12.5	12.5	0.00	661	0.0
82	FIDE 29672066	0	—	−46B	F	F	F	F	F	F	0.0	3.5	3.5	0.00	720	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Cabrera Estrada, Angel AlexisMEX
+91.2
5.5 pts · #4
2Montoya Medina, SantiagoMEX
+64.8
5.5 pts · #13
3Gonzalez Romo, Derek MilanMEX
+54.0
6.0 pts · #2

Top rating losers

1Gomez Tolentino, AndresMEX
-52.0
3.0 pts · #69
2Medina Anacleto, Cesar AntonioMEX
-34.0
4.5 pts · #31
3Garcia Lopez, FrancoMEX
-30.8
3.5 pts · #61

Biggest upsets

R5+264 Elo gap
Montoya Medina, Santiago1520 beat Cubillas Gonzalez, Lamberto1784
R3+244 Elo gap
Flores Moreno, Jose Patricio1525 beat Campillo Soto, Emilio1769
R3+232 Elo gap
Montoya Medina, Santiago1520 beat Puentes Barragan, Cesar Alexandro1752