X GRAND PRIX CLUB CIA 2025

Open SwissStandard

35 players participated in this 7-round tournament, held from 05 Sept 2025 to 07 Sept 2025 in Yaguaron, Paraguay. 2 titled players. Top 10 Elo average was 1872, and top seed was Rodolfo Cantero (🇵🇾 PAR, CM, 2196).

Jose Antonio Alarcon (🇵🇾 PAR, 2056) won with 6.0/7, ahead of Angel Nathanael Montiel (6.0) and Arnold Mayeregger (5.5). Alarcon shared the lead from round 6, winning on tie-break.

The biggest upset came in round 4: Martin Alejandro Aguilar Petersen (1613) beat Augusto Gonzalez (1945), a +332-point gap.

Location

🇵🇾Yaguaron, Paraguay

Dates

05 Sept 2025 → 07 Sept 2025

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 7 rounds

Top seed

🇵🇾CMRodolfo Cantero2196

Avg top 10

1,872

Participants

Titled players · 2

CM×2

Federations · 1 represented

🇵🇾Paraguay×30

Top 3

🥇
Jose Antonio Alarcon
🇵🇾PAR·2056
6.0pts·2189perf+20.4
🥈
CMAngel Nathanael Montiel
🇵🇾PAR·2057
6.0pts·2175perf+23.6
🥉
Arnold Mayeregger
🇵🇾PAR·2183
5.5pts·2094perf-8.0

How it unfolded

Top 6 · 7 rounds

Tight race until R5; 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

Montiel6Alarcon6Mayeregger5.5Cantero4.5Gonzalez4Ochoa Uliambre4

R5–R7 · LEAD HELD

CM Angel Nathanael Montiel held the sole lead from R5 through R7 without losing it.

R7 · TIEBREAK CLUSTER

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

R4 · HEAD-TO-HEAD · WINNER VS 2ND

CM Angel Nathanael Montiel drew with Jose Antonio Alarcon (White).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1CMAngel Nathanael Montiel	*	½	½	1
2Jose Antonio Alarcon	½	*	½	1
3Arnold Mayeregger	½	½	*	—
4CMRodolfo Cantero	0	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	Pts	Bu C1	Bu	SB	Perf	Δ
1	Alarcon, Jose Antonio	2056	PAR	+35N	+9B	+4N	=2N	=3B	+5B	+6N	6.0	28.0	28.0	22.25	2189	+20.4
2	Montiel, Angel NathanaelCM	2057	PAR	+27B	+15N	+24N	=1B	+18B	=3N	+4N	6.0	25.0	27.0	21.25	2175	+23.6
3	Mayeregger, Arnold	2183	PAR	+5N	+26B	=8N	+6B	=1N	=2B	+12N	5.5	28.0	30.0	22.00	2094	-8.0
4	Cantero, RodolfoCM	2196	PAR	+11B	+21N	−1B	+7N	+9B	=8N	−2B	4.5	28.0	31.0	17.00	1930	-30.6
5	del Puerto Moreno, Juan Jose	1497	PAR	−3B	+32N	+19B	+17N	+10B	−1N	−8B	4.0	25.5	26.5	11.00	1692	+19.0
6	Benitez, Jhony	1648	PAR	F	+7N	+10B	−3N	+26B	+20N	−1B	4.0	24.5	24.5	13.00	1802	+11.8
7	Ochoa Uliambre, Carlos Gabriel	0	PAR	+13N	−6B	+16N	−4B	=14B	=10N	+24B	4.0	24.0	26.5	14.00	1706	0.0
8	Gonzalez, Augusto	1945	PAR	F	+17N	=3B	−18N	+24B	=4B	+5N	4.0	22.5	25.0	14.50	1897	-0.6
9	Veron Mendoza, Ibsen Steven	0	PAR	F	−1N	+27B	+21B	−4N	+16B	+18N	4.0	22.0	22.0	11.50	1802	0.0
10	Rivera Antunez, Abdon	1604	PAR	=23N	+28B	−6N	+31B	−5N	=7B	+26N	4.0	19.0	20.0	8.50	773	-21.8
11	Diarte Caceres, Santiago Miguel	1507	PAR	−4N	+34B	=26N	−12B	=25N	+21B	+28B	4.0	18.0	19.0	8.25	1617	+12.8
12	Barrios Pinanez, Carlos Emmanuel	1603	PAR	F	F	+30B	+11N	+17B	+18N	−3B	4.0	17.5	17.5	12.00	1856	+48.4
13	Martinez Campos, Rita Hayelen	1550	PAR	−7B	=23B	+28N	−26N	+29B	=22N	+19B	4.0	17.0	19.0	10.00	1534	-0.8
14	Cardozo Perez, Arturo H.	1697	PAR	=19B	F	−31N	+28B	=7N	+35B	+17N	4.0	13.0	13.0	8.50	2327	+5.6
15	Gonzalez Gauto, Victor	1564	PAR	+32N	−2B	F	+19N	−20B	+27N	=22B	3.5	18.0	18.0	7.50	1521	-7.8
16	Ortiz Villalba, Josue Enrique	1563	PAR	F	=19N	−7B	+35N	+27B	−9N	+20B	3.5	16.0	16.0	6.50	2268	+30.0
17	Ortiz Gimenez, David Javier	1528	PAR	+33N	−8B	+23N	−5B	−12N	+25B	−14B	3.0	21.5	22.5	6.50	881	-52.0
18	Aguilar Petersen, Martin Alejandro	1613	PAR	F	+31B	+29N	+8B	−2N	−12B	−9B	3.0	21.0	21.0	7.00	1729	+11.2
19	Cardozo Salinas, Lucas Arturo	0	PAR	=14N	=16B	−5N	−15B	+32N	+31B	−13N	3.0	20.0	21.0	5.75	1334	0.0
20	Saldivar Romanach, Luis Marcelo	1509	PAR	F	F	+33N	+23B	+15N	−6B	−16N	3.0	17.0	17.0	7.50	1466	-6.4
21	Salinas Barrios, Miguel	1718	PAR	+34N	−4B	+35B	−9N	F	−11N	+29B	3.0	15.5	15.5	3.00	1013	-34.0
22	Martinez Meaurio, Hugo Emanuel	1534	PAR	F	−29B	−25N	+30B	+31N	=13B	=15N	3.0	15.0	15.0	6.75	1558	+2.4
23	Martinez Gimenez, Arsenio	0	PAR	=10B	=13N	−17B	−20N	F	+33B	+35N	3.0	15.0	15.0	5.00	1355	0.0
24	Moreno Silva, Valentina Gizeth	1550	PAR	F	+30N	−2B	+25B	−8N	=26B	−7N	2.5	20.5	20.5	5.50	1143	-6.4
25	Barrios Torres, Carlos Enrique	0	PAR	F	F	+22B	−24N	=11B	−17N	+27B	2.5	18.5	18.5	7.00	1507	0.0
26	Pinto Vazquez, Benjamin Narciso	0	PAR	F	−3N	=11B	+13B	−6N	=24N	−10B	2.0	24.5	27.0	7.25	1548	0.0
27	Imas Torres, Juan Carlos	1426	PAR	−2N	+33B	−9N	+32B	−16N	−15B	−25N	2.0	20.5	21.5	2.00	851	-28.4
28	FIDE 3719464	0	—	F	−10N	−13B	−14N	+33B	+32B	−11N	2.0	18.0	18.0	2.00	790	0.0
29	Ocampos Mendieta, Domingo Aristides	0	PAR	F	+22N	−18B	F	−13N	+30B	−21N	2.0	15.0	15.0	5.00	1412	0.0
30	Melgarejo Cortessi, Thiago David	0	PAR	F	−24B	−12N	−22N	+34B	−29N	+32B	2.0	13.5	13.5	2.00	760	0.0
31	Alvarez Duarte, Juan Jose	0	PAR	F	−18N	+14B	−10N	−22B	−19N	−34N	1.0	18.0	18.0	4.00	1420	0.0
32	FIDE 3722724	0	—	−15B	−5B	+34N	−27N	−19B	−28N	−30N	1.0	16.5	17.5	1.00	696	0.0
33	FIDE 3725677	0	—	−17B	−27N	−20B	+34B	−28N	−23N	F	1.0	14.0	14.0	1.00	687	0.0
34	FIDE 3725642	0	—	−21B	−11N	−32B	−33N	−30N	F	+31B	1.0	12.0	12.0	1.00	813	0.0
35	FIDE 3720888	0	—	−1B	F	−21N	−16B	F	−14N	−23B	0.0	22.5	25.5	0.00	958	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Barrios Pinanez, Carlos EmmanuelPAR
+48.4
4.0 pts · #7
2Ortiz Villalba, Josue EnriquePAR
+30.0
3.5 pts · #12
3Montiel, Angel NathanaelCMPAR
+23.6
6.0 pts · #1

Top rating losers

1Ortiz Gimenez, David JavierPAR
-52.0
3.0 pts · #33
2Salinas Barrios, MiguelPAR
-34.0
3.0 pts · #35
3Cantero, RodolfoCMPAR
-30.6
4.5 pts · #8

Biggest upsets

R4+332 Elo gap
Aguilar Petersen, Martin Alejandro1613 beat Gonzalez, Augusto1945
R6+211 Elo gap
Diarte Caceres, Santiago Miguel1507 beat Salinas Barrios, Miguel1718
R3+140 Elo gap
Alarcon, Jose Antonio2056 beat CMCantero, Rodolfo2196