XII GRAND PRIX CEA 2025

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81 players participated in this 7-round tournament, held from 12 Dec 2025 to 14 Dec 2025 in Encarnacion, Paraguay. 6 titled players from 4 federations. Top 10 Elo average was 2113, and top seed was Antonio Almiron (🇵🇾 PAR, IM, 2320).

Antonio Almiron (🇵🇾 PAR, IM, 2320) won with 6.0/7, ahead of Joaquin Jimenez (6.0) and Marcelo Villalba (5.5). Almiron shared the lead from round 1, winning on tie-break.

The biggest upset came in round 3: Miguel Angel Ayala Ruiz (1870) beat Marcelo Villalba (IM, 2218), a +348-point gap.

Location

🇵🇾Encarnacion, Paraguay

Dates

12 Dec 2025 → 14 Dec 2025

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 7 rounds

Top seed

🇵🇾IMAntonio Almiron2320

Avg top 10

2,113

Participants

Titled players · 6

IM×2

FM×1

CM×3

Federations · 4 represented

🇵🇾Paraguay×57

🇦🇷Argentina×12

🇷🇺Russia×1

🇩🇪Germany×1

Top 3

🥇
IMAntonio Almiron
🇵🇾PAR·2320
6.0pts·2370perf+4.6
🥈
CMJoaquin Jimenez
🇦🇷ARG·2126
6.0pts·2192perf+12.8
🥉
IMMarcelo Villalba
🇵🇾PAR·2218
5.5pts·2127perf-7.0

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 2 co-leaders at R4 to 2 at the finish.

Co-leaders

Jimenez6Almiron6Villalba5.5Zaldivar5.5Gonzalez5.5Sosa Harrison5

R7 · TIEBREAK CLUSTER

2 players finish on 6.0/7. Almiron takes the title on Buchholz Cut1 (31.0).

WIN STREAKS · 2 top finishers

IM Antonio Almiron 4 wins (R1–R4)IM Marcelo Villalba 3 wins (R4–R6)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1CMJoaquin Jimenez	*	—	—	—
2IMAntonio Almiron	—	*	½	1
3IMMarcelo Villalba	—	½	*	—
4Patricio Zaldivar	—	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	Pts	Bu C1	Bu	SB	Perf	Δ
1	Almiron, AntonioIM	2320	PAR	+65N	+17B	+4N	+5B	=6N	+7B	=3N	6.0	31.0	33.0	27.75	2370	+4.6
2	Jimenez, JoaquinCM	2126	ARG	+35N	+16B	=11N	+21B	=7N	+13B	+22B	6.0	27.0	30.5	25.50	2192	+12.8
3	Villalba, MarceloIM	2218	PAR	+56N	+24B	−12N	+42B	+11N	+21B	=1B	5.5	27.0	29.5	21.50	2127	-7.0
4	Gonzalez, Augusto	1929	PAR	+33B	+25N	−1B	+32N	=9B	+42N	+14B	5.5	26.5	29.5	21.00	1990	+9.2
5	Zaldivar, Patricio	2001	ARG	+63B	+58N	+19B	−1N	=14B	+23N	+8B	5.5	26.5	28.5	20.25	2083	+14.6
6	Cantero, RodolfoCM	2194	PAR	+49B	+14N	+22B	+12N	=1B	−8N	=9B	5.0	29.5	32.5	22.00	2149	-1.4
7	Sosa Harrison, JorgeFM	2242	PAR	+61B	+27N	=10B	+18N	=2B	−1N	+21B	5.0	29.5	32.0	20.50	2126	-11.4
8	Montiel, Angel NathanaelCM	2080	PAR	+9B	+34N	=18B	=23N	+19B	+6B	−5N	5.0	28.5	32.0	22.25	2016	-6.4
9	Chernous, Denis	0	RUS	−8N	+52B	+24N	+30B	=4N	+18B	=6N	5.0	28.0	31.0	20.75	1938	0.0
10	Yossen, Angel Damian	1960	ARG	+15N	+20B	=7N	=11B	−21N	+43B	+26N	5.0	27.0	30.0	21.00	1891	-6.6
11	Marchak, Miguel Fernando	1790	ARG	+81B	+54N	=2B	=10N	−3B	+25N	+30N	5.0	27.0	27.0	16.00	1961	+40.0
12	Ayala Ruiz, Miguel Angel	1870	PAR	+39B	+32N	+3B	−6B	−16N	+59N	+40B	5.0	25.5	28.0	18.50	1914	+8.2
13	Alvarez, Jesus Esteban	2058	ARG	+76N	+26B	−21N	+44B	+17B	−2N	=16N	4.5	26.0	27.0	14.75	1831	-54.0
14	Cardozo Acosta, Axel Maximiliano	1709	PAR	+75N	−6B	+35N	+64B	=5N	+20B	−4N	4.5	26.0	27.0	13.75	1812	+22.0
15	Benitez Sotelo, Tobias Ezequiel	0	PAR	−10B	+28N	+47B	−17N	+32B	+36N	=19B	4.5	25.0	28.0	16.25	1759	0.0
16	Mino Almiron, Joaquin A.	1685	PAR	+71B	−2N	+63B	+38N	+12B	−22N	=13B	4.5	25.0	27.0	14.75	1875	+42.0
17	Duba, Yamil	1756	PAR	+51N	−1N	+57B	+15B	−13N	=33B	+47N	4.5	24.5	27.0	14.75	1854	+7.4
18	Fernandez, Jose Baldomero	1843	PAR	+70N	+38B	=8N	−7B	+45B	−9N	+42B	4.5	24.5	26.5	14.00	1957	+22.4
19	Rivarola Rotela, Alejandro Moises	1781	PAR	+46N	+48B	−5N	+55B	−8N	+44B	=15N	4.5	24.0	26.5	13.75	1765	+0.8
20	Gonzalez Mendez, Martin Ezequiel	1614	PAR	+72B	−10N	+54B	+68N	=23B	−14N	+38B	4.5	21.5	23.5	12.00	1662	+5.2
21	Aguilar Petersen, Martin Alejandro	1760	PAR	+68B	+41N	+13B	−2N	+10B	−3N	−7N	4.0	29.5	31.5	15.00	2021	+54.0
22	Mendez Moniec, Lautaro	1877	ARG	+64N	+43B	−6N	+48B	F	+16B	−2N	4.0	25.0	27.0	12.50	1875	+5.2
23	Britez Gonzalez, Jorge A	1841	PAR	F	+50B	+37N	=8B	=20N	−5B	+33N	4.0	25.0	25.0	14.75	1836	+1.0
24	Pintos Merlo, Ignacio	1714	ARG	+45B	−3N	−9B	+54N	+29B	−40N	+69B	4.0	23.5	25.5	11.50	1028	-16.4
25	Gonzalez Gauto, Victor	1551	PAR	+67N	−4B	+46N	−36B	+56N	−11B	+55N	4.0	22.0	24.0	10.00	1583	+1.6
26	Maxit, Alfredo Javier	1628	ARG	+28B	−13N	−68B	+71N	+49B	+45N	−10B	4.0	21.5	23.5	12.00	1677	+0.6
27	Mueller, Hans-Peter	1728	GER	+69N	−7B	−55N	=46B	+50N	=37B	+48N	4.0	20.0	22.0	11.25	1624	-14.0
28	Moore Fernandez, Damian	0	ARG	−26N	−15B	+31N	−43B	+70N	+65B	+57N	4.0	20.0	22.0	10.50	1547	0.0
29	Vergara Aquino, Daniel Rodrigo	0	PAR	−32B	=39N	+79N	+37B	−24N	=57B	+43N	4.0	20.0	20.0	9.50	1581	0.0
30	Carreras Colman, Luz Gabriela	1621	PAR	+62N	F	+51B	−9N	+63B	+67N	−11B	4.0	19.5	19.5	9.50	990	-5.6
31	Lopez Estoup, Bastian Benjamin	1513	ARG	−41B	−68N	−28B	+72N	+60B	+54N	+66B	4.0	16.5	18.5	9.00	2255	+16.8
32	Portillo Arriola, Andrea Magali	1519	PAR	+29N	−12B	+69N	−4B	−15N	+64B	=41N	3.5	24.5	26.5	9.75	1095	-7.6
33	Caceres, Elian Gabino	0	PAR	−4N	+80B	=34B	+57N	=40B	=17N	−23B	3.5	23.5	23.5	8.25	1653	0.0
34	Valenzuela Jara, Leandro	1674	PAR	+52N	−8B	=33N	+50B	−42N	=55B	=35N	3.5	21.0	23.5	10.75	1535	-40.4
35	Arcos Ramirez, Juan	1402	PAR	−2B	+71N	−14B	−66N	+75B	+53N	=34B	3.5	21.0	22.0	7.75	1456	+4.4
36	Arce Escobar, Fernando	1732	PAR	−54B	+78N	+49B	+25N	F	−15B	=44N	3.5	21.0	21.5	9.00	1767	+2.4
37	Barrios Pinanez, Carlos Emmanuel	1614	PAR	F	+60N	−23B	−29N	+39B	=27N	+45B	3.5	21.0	21.0	11.00	1675	+9.2
38	Duarte, Junior Oscar	1482	ARG	+66N	−18N	+67B	−16B	+64N	=47B	−20N	3.5	20.5	22.5	7.50	1384	-16.0
39	Casco Chavez, Sofia Elena	0	PAR	−12N	=29B	−50N	+79B	−37N	+62B	+58B	3.5	20.5	20.5	7.00	1537	0.0
40	Martinez Meaurio, Hugo Emanuel	1535	PAR	F	+74B	−42B	+60N	=33N	+24B	−12N	3.5	19.5	19.5	9.75	1672	+26.0
41	Zarza Aquino, Jose Maria	0	PAR	+31N	−21B	−44N	−56B	+77N	+74B	=32B	3.5	18.5	19.5	8.25	1396	0.0
42	Ortiz Bareiro, Josias Ezequiel	1639	PAR	F	+79B	+40N	−3N	+34B	−4B	−18N	3.0	22.5	22.5	7.00	1747	+27.6
43	Caceres Iriarte, Elias Ivan	1530	PAR	+73B	−22N	−45B	+28N	+66B	−10N	−29B	3.0	22.0	24.0	8.00	1106	-8.0
44	Troche Gonzalez, David Alexander Nahuel	1502	PAR	F	=47N	+41B	−13N	+53B	−19N	=36B	3.0	22.0	22.0	9.75	1586	+10.0
45	Gomez Lopez, Eder	0	PAR	−24N	+56B	+43N	+59B	−18N	−26B	−37N	3.0	21.5	24.0	8.00	1570	0.0
46	Falcon, Lucas Maximiliano	0	PAR	−19B	+53N	−25B	=27N	−57B	=60N	+65N	3.0	20.5	22.5	8.25	1454	0.0
47	Bernal Gonzalez, Elias Emanuel	1681	PAR	F	=44B	−15N	+51B	+65N	=38N	−17B	3.0	20.5	20.5	8.25	1548	-27.2
48	Iriarte Navarro, Juan Carlos	1461	PAR	+53B	−19N	+66B	−22N	−67B	+58N	−27B	3.0	20.0	22.0	7.50	1548	+11.2
49	Lopez Ruiz Diaz, Sofia Isabel	1418	PAR	−6N	+75B	−36N	+62B	−26N	−51B	+73N	3.0	20.0	21.0	5.50	926	-18.0
50	Insfran Bogarin, Liam	1511	PAR	F	−23N	+39B	−34N	−27B	+61N	+67B	3.0	19.5	19.5	8.00	1476	-9.2
51	Flecha Lugo, Daniel	0	PAR	−17B	+65B	−30N	−47N	+78B	+49N	−59B	3.0	19.0	19.5	5.50	1458	0.0
52	Maciel San Martin, Benjamin Andre	0	PAR	−34B	−9N	+61B	−63N	−54B	+76N	+74N	3.0	17.0	18.0	5.00	1554	0.0
53	Zuiderwyk Chaparro, Isabel Eliana	0	PAR	−48N	−46B	+75N	+74B	−44N	−35B	+64N	3.0	16.0	17.0	4.50	660	0.0
54	Garay Nunez, Santhino Benjamin	0	PAR	+36N	−11B	−20N	−24B	+52N	−31B	=56N	2.5	24.0	26.5	7.75	1438	0.0
55	Florenciano Cuba, Dylan Armando	1427	PAR	F	=59N	+27B	−19N	=58B	=34N	−25B	2.5	21.0	21.0	8.25	1595	+50.8
56	Kranich Arambulo, Josias Arturo	1418	PAR	−3B	−45N	+73B	+41N	−25B	−66N	=54B	2.5	20.5	22.5	6.75	883	-16.0
57	Alvarez Duarte, Juan Jose	1519	PAR	F	+77B	−17N	−33B	+46N	=29N	−28B	2.5	20.0	20.0	6.00	956	-8.0
58	Alvarez, Nestor Carlos	1589	ARG	+80N	−5B	−64N	+69B	=55N	−48B	−39N	2.5	18.5	18.5	3.25	1346	-19.8
59	Lopez Maldonado, Matias Nicolas	1584	PAR	F	=55B	+70N	−45N	F	−12B	+51N	2.5	17.5	17.5	6.25	1445	-15.6
60	Noguera Delgado, Gael Eduardo	1438	PAR	F	−37B	+77N	−40B	−31N	=46B	+70N	2.5	17.0	17.0	4.50	755	-44.0
61	Vazquez Fleita, Pilar Alejandra	1432	PAR	−7N	−69B	−52N	+77B	=62N	−50B	+76B	2.5	16.5	17.5	3.25	872	-18.8
62	FIDE 3726614	0	—	−30B	−63N	+76B	−49N	=61B	−39N	+77B	2.5	16.0	17.0	3.25	1218	0.0
63	FIDE 3706400	0	—	−5N	+62B	−16N	+52B	−30N	F	F	2.0	21.5	23.5	5.50	969	0.0
64	Caceres Iriarte, Danthe Joaquin	0	PAR	−22B	+72N	+58B	−14N	−38B	−32N	−53B	2.0	21.0	23.0	4.50	1396	0.0
65	Vieira Alvarez, Vicente	1437	PAR	−1B	−51N	+72B	+78N	−47B	−28N	−46B	2.0	21.0	21.5	2.50	960	-11.2
66	Zarza Rios, Benjamin Emanuel	0	PAR	−38B	F	−48N	+35B	−43N	+56B	−31N	2.0	19.5	19.5	6.00	1344	0.0
67	Zuiderwyk Chaparro, Nicolas Alexander	0	PAR	−25B	F	−38N	+70B	+48N	−30B	−50N	2.0	19.5	19.5	5.00	1285	0.0
68	Fernadez Balbuena, Felipe Nery	0	PAR	−21N	+31B	+26N	−20B	F	F	F	2.0	19.0	19.0	8.00	1629	0.0
69	Garay Ruiz, Agustin Dario	0	PAR	−27B	+61N	−32B	−58N	+76B	F	−24N	2.0	18.5	19.5	3.50	1358	0.0
70	Chavez Acuna, Mariano Agustin	0	PAR	−18B	+73N	−59B	−67N	−28B	+72N	−60B	2.0	17.5	19.5	4.00	827	0.0
71	Lezcano Cristaldo, Thiago Santino	0	PAR	−16N	−35B	+80N	−26B	−74N	+78B	F	2.0	16.0	16.0	0.50	772	0.0
72	Roman Gimenez, Alejandro Gabriel	0	PAR	−20N	−64B	−65N	−31B	+79N	−70B	+78N	2.0	15.0	15.0	0.50	1313	0.0
73	FIDE 3726649	0	—	−43N	−70B	−56N	F	+80B	+75N	−49B	2.0	12.5	12.5	1.00	656	0.0
74	FIDE 3719464	0	—	F	−40N	=78B	−53N	+71B	−41N	−52B	1.5	15.5	15.5	2.25	736	0.0
75	FIDE 3726592	0	—	−14B	−49N	−53B	F	−35N	−73B	+80N	1.0	18.0	18.0	0.00	711	0.0
76	FIDE 3726509	0	—	−13B	F	−62N	+80B	−69N	−52B	−61N	1.0	14.5	14.5	0.00	946	0.0
77	FIDE 3719367	0	—	F	−57N	−60B	−61N	−41B	+79B	−62N	1.0	13.5	13.5	0.00	1274	0.0
78	FIDE 3717550	0	—	F	−36B	=74N	−65B	−51N	−71N	−72B	0.5	14.0	14.0	0.75	785	0.0
79	Chaparro Baez, Juan Sebastian	1459	PAR	F	−42N	−29B	−39N	−72B	−77N	F	0.0	13.5	13.5	0.00	841	-10.4
80	FIDE 3726630	0	—	−58B	−33N	−71B	−76N	−73N	F	−75B	0.0	12.0	12.0	0.00	790	0.0
81	FIDE 3722899	0	—	−11N	F	F	F	F	F	F	0.0	7.0	7.0	0.00	990	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Aguilar Petersen, Martin AlejandroPAR
+54.0
4.0 pts · #37
2Florenciano Cuba, Dylan ArmandoPAR
+50.8
2.5 pts · #25
3Mino Almiron, Joaquin A.PAR
+42.0
4.5 pts · #23

Top rating losers

1Alvarez, Jesus EstebanARG
-54.0
4.5 pts · #14
2Noguera Delgado, Gael EduardoPAR
-44.0
2.5 pts · #65
3Valenzuela Jara, LeandroPAR
-40.4
3.5 pts · #35

Biggest upsets

R3+348 Elo gap
Ayala Ruiz, Miguel Angel1870 beat IMVillalba, Marcelo2218
R3+301 Elo gap
Florenciano Cuba, Dylan Armando1427 beat Mueller, Hans-Peter1728
R3+298 Elo gap
Aguilar Petersen, Martin Alejandro1760 beat Alvarez, Jesus Esteban2058