ABIERTO MENDOZA "Copa Guaymallen"

SwissStandard

114 players participated in this 7-round tournament, held from 05 Dec 2025 to 08 Dec 2025 in Guaymallen -Mendoza, Argentina. 22 titled players from 7 federations. Top 10 Elo average was 2305, and top seed was Gilberto Hernandez Guerrero (🇲🇽 MEX, GM, 2414).

Maximiliano Perez (🇦🇷 ARG, IM, 2365) won with 6.0/7, ahead of Alejandro Needleman (5.5) and Gilberto Hernandez Guerrero (5.5). Perez won solo starting round 5.

The biggest upset came in round 1: Osmar Marquina (1448) beat Luis Valenzuela (1924), a +476-point gap.

Location

🇦🇷Guaymallen -Mendoza, Argentina

Dates

05 Dec 2025 → 08 Dec 2025

Time control

Standard: 90 minutes for game with 30 seconds delay from move 1

System

Swiss · 7 rounds

Top seed

🇲🇽GMGilberto Hernandez Guerrero2414

Avg top 10

2,305

Participants

114

Titled players · 22

GM×1

IM×6

FM×10

CM×3

WFM×1

WCM×1

Federations · 7 represented

🇦🇷Argentina×92

🇨🇱Chile×11

🇲🇽Mexico×1

🇺🇾Uruguay×1

🇫🇷France×1

🇮🇹Italy×1

🇻🇪Venezuela×1

Top 3

🥇
IMMaximiliano Perez
🇦🇷ARG·2365
6.0pts·2466perf+7.5
🥈
IMAlejandro Needleman
🇦🇷ARG·2205
5.5pts·2375perf+15.8
🥉
GMGilberto Hernandez Guerrero
🇲🇽MEX·2414
5.5pts·2363perf-3.3

How it unfolded

Top 6 · 7 rounds

IM Maximiliano Perez led from R5; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.

Co-leaders

Perez6Silva5.5Contin5.5Needleman5.5Luconi5.5Hernandez Guerrero5.5

R5–R7 · LEAD HELD

IM Maximiliano Perez held the sole lead from R5 through R7 without losing it.

R4 · HEAD-TO-HEAD · WINNER VS 2ND

IM Maximiliano Perez beat FM Luca Silva (Black).

WIN STREAKS · 2 top finishers

IM Maximiliano Perez 5 wins (R1–R5)FM Luca Silva 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1IMMaximiliano Perez	*	1	—	1
2FMLuca Silva	0	*	—	—
3IMDaniel Contin	—	—	*	½
4IMAlejandro Needleman	0	—	½	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	Pts	Bu C1	Bu	SB	Perf	Δ
1	Perez, MaximilianoIM	2365	ARG	+56B	+34N	+11B	+4N	+2B	=16N	=10B	6.0	29.5	33.0	28.25	2466	+7.5
2	Needleman, AlejandroIM	2205	ARG	+60B	+35N	+9B	+27N	−1N	+26B	=6N	5.5	28.5	31.5	22.75	2375	+15.8
3	Hernandez Guerrero, GilbertoGM	2414	MEX	+55N	+31B	=7N	+12B	−16B	+58N	+17B	5.5	26.5	29.5	22.50	2363	-3.3
4	Silva, LucaFM	2247	ARG	+82N	+37B	+58N	−1B	+29N	+9B	=16B	5.5	26.5	29.0	20.75	2322	+14.6
5	Luconi, CristianFM	2218	ARG	+68N	+47B	=13N	+7B	=26N	=28B	+20N	5.5	26.0	29.0	22.50	2301	+16.6
6	Contin, DanielIM	2188	ITA	+67B	=59N	+77B	+18N	=10B	+27N	=2B	5.5	25.0	27.5	20.75	2317	+12.8
7	Chacon Salinas, Cesar	2176	CHI	+51B	+39N	=3B	−5N	+61B	+22N	=8B	5.0	28.0	31.0	20.25	2214	+11.6
8	Vasquez Toledo, CristianIM	2282	CHI	+80N	+19B	−12N	+13B	=30N	+21B	=7N	5.0	28.0	30.5	21.00	2223	-6.8
9	Fravega, Adriano	2173	ARG	+45N	+40B	−2N	+36B	+51B	−4N	+32B	5.0	27.0	30.5	19.50	2117	-6.8
10	Perez, DanielFM	2259	ARG	+57N	+53B	F	+24B	=6N	+33B	=1N	5.0	27.0	27.0	21.25	2401	+22.0
11	Herrera, MartinFM	2192	ARG	+88N	+20B	−1N	+59B	=19N	+53B	=13N	5.0	26.5	28.5	17.75	2155	-1.8
12	Lopez Miller, Indalecio	2158	ARG	+86B	+52N	+8B	−3N	−27B	+39N	+28N	5.0	26.0	28.5	19.00	2262	+23.8
13	Llanos, Joaquin	2090	ARG	+87B	+64N	=5B	−8N	+65B	+25N	=11B	5.0	26.0	28.0	17.75	2195	+19.8
14	Acuna, Alvaro	2036	ARG	F	+48N	+25B	=28B	=41N	+24B	+26N	5.0	24.5	24.5	20.50	2438	+60.0
15	Bahamondes Ortiz, BenjaminFM	2298	CHI	+50N	−29B	+21N	=47B	+76N	=30B	+37N	5.0	23.5	26.0	18.25	2139	-20.4
16	Ocampos, Ian	2205	ARG	+73N	F	+38B	=26B	+3N	=1B	=4N	4.5	28.5	31.5	20.25	2395	+31.6
17	Acosta, Franco Emanuel	2187	ARG	+79N	+36B	=28N	=33B	=20N	+19B	−3N	4.5	26.5	29.0	17.25	2168	+1.4
18	Asprelli, GasparFM	2311	ARG	+54N	=21B	+29N	−6B	−22N	+65B	+47N	4.5	25.5	28.5	16.25	2096	-29.8
19	Platini, Renzo Jesus	1977	ARG	+84B	−8N	+63B	+42N	=11B	−17N	+52B	4.5	25.0	27.5	15.50	2064	+36.0
20	Quiroga, Leandro	1895	ARG	+110B	−11N	+105B	+23N	=17B	+38N	−5B	4.5	24.5	24.5	11.75	2123	+35.6
21	Barloa, Enzo	2053	ARG	+75B	=18N	−15B	+57N	+80B	−8N	+76B	4.5	23.5	26.0	13.75	2100	+12.2
22	Soto Mancilla, Cristobal Alejand	1970	CHI	+62N	F	=60B	+88N	+18B	−7B	+46N	4.5	23.0	25.0	14.50	2037	+13.4
23	Guerrero Cataldo, Juan AndresCM	2182	CHI	+46N	+76B	−26N	−20B	+48N	=36B	+59N	4.5	22.5	25.0	14.50	2010	-22.6
24	Quiroga, FacundoIM	2183	ARG	+95B	=61N	+65B	−10N	+70B	−14N	+49B	4.5	22.5	24.5	13.00	2034	-9.9
25	Perez Candelas, Andres EloyFM	2222	VEN	=48B	+69N	−14N	+102B	+47N	−13B	+77N	4.5	22.5	23.5	11.75	2023	-27.6
26	Olivares Olivares, ClaudioFM	2260	CHI	+63B	+43N	+23B	=16N	=5B	−2N	−14B	4.0	29.0	32.0	16.50	2147	-8.7
27	Cristobal, ManuelFM	2257	ARG	+99B	F	+30N	−2B	+12N	−6B	+29N	4.0	28.5	30.0	14.50	2210	-4.8
28	Valdes Escobar, AlvaroIM	2308	CHI	+72B	+32N	=17B	=14N	=31B	=5N	−12B	4.0	28.0	31.0	16.50	2131	-14.0
29	Correa, Leonardo Aluhe	1981	ARG	+91B	+15N	−18B	+52N	−4B	+42N	−27B	4.0	26.5	28.5	14.50	2106	+22.4
30	Aravena Navarro, Alexis Andres	2120	CHI	+96B	+42N	−27B	+39N	=8B	=15N	−41N	4.0	26.0	28.0	15.00	2129	+5.4
31	Escudero Donoso, FelipeCM	2080	CHI	+94N	−3N	+55B	+54B	=28N	=41B	F	4.0	24.5	26.5	13.00	2186	+18.4
32	Pierucci, Fabian	1977	ARG	+78N	−28B	+50N	+46B	−33N	+54B	−9N	4.0	23.5	26.0	13.00	1985	+4.2
33	Mavrich, Demian	2200	ARG	+102B	=77N	+61B	=17N	+32B	−10N	F	4.0	23.0	24.0	11.50	2125	-7.2
34	Lucero, Marzo Daniel	2024	ARG	+114N	−1B	−54N	+66B	+72N	=40B	=56N	4.0	23.0	23.0	9.75	1902	-18.8
35	Guardia, Guillermo	1965	ARG	+93N	−2B	−46N	+81B	=50N	+48B	=40N	4.0	22.5	24.5	11.75	1817	-21.4
36	Izaza, Agustin David	1881	ARG	+85B	−17N	+90B	−9N	+67B	=23N	=58B	4.0	22.5	24.5	11.25	1965	+26.0
37	Cicciari, Teo Dante	1967	ARG	+98B	−4N	+79B	−51N	+63B	+64N	−15B	4.0	22.5	24.0	10.00	1865	-13.4
38	Tomeo, Nicolas	2121	ARG	+66N	+83B	−16N	=76B	=40N	−20B	+63N	4.0	21.5	24.0	11.75	1916	-30.2
39	Hernandez Amura, Luis Eduardo	1859	ARG	+97N	−7B	+78N	−30B	+68N	−12B	+99N	4.0	21.5	23.0	9.00	1906	+6.2
40	Silva Rosas, NataliaWCM	1855	URU	+112B	−9N	+106B	=58N	=38B	=34N	=35B	4.0	21.0	21.0	8.50	2006	+17.4
41	Fernandez, JorgeFM	2291	ARG	+44B	F	F	+49N	=14B	=31N	+30B	4.0	20.5	20.5	16.00	2248	-2.6
42	Capovilla, Valentina Soledad	1848	ARG	+111N	−30B	+71N	−19B	+87N	−29B	+68N	4.0	20.5	20.5	8.00	1797	-7.0
43	Medero Mino, LeonCM	1974	ARG	+89N	−26B	F	=60N	+44B	=52N	+70B	4.0	19.5	19.5	12.25	1968	+2.0
44	Guida, Matias	1812	ARG	−41N	−78B	+89N	+84B	−43N	+81B	+62N	4.0	18.5	20.5	10.00	1735	-24.0
45	Gannam, Naim	1623	ARG	−9B	+103N	F	−56B	+111N	+50B	+61N	4.0	16.0	16.0	7.50	1887	+50.0
46	Herrera, Bautista Santino	1634	ARG	−23B	+85N	+35B	−32N	+55B	=49N	−22B	3.5	24.0	26.5	11.75	1892	+66.0
47	Sanchez Tobar, Francisca ValentiWFM	1948	CHI	+90B	−5N	+95B	=15N	−25B	+80N	−18B	3.5	24.0	26.0	9.00	2008	+9.8
48	Lopez, Hector	1726	ARG	=25N	−14B	+114B	+77N	−23B	−35N	+84B	3.5	23.0	23.0	7.25	1883	+23.6
49	Vera Ruiz, Felipe Andres	1910	CHI	+74B	F	+66N	−41B	+99N	=46B	−24N	3.5	22.5	24.0	9.25	1882	-2.0
50	Aguero, Jose Luis	1815	ARG	−15B	+84N	−32B	+105N	=35B	−45N	+60B	3.5	22.5	23.5	8.50	1780	-12.4
51	Escobar, Matias	1624	ARG	−7N	F	+92B	+37B	−9N	=59B	+53N	3.5	22.5	22.5	11.00	2024	+55.6
52	Besso, Javier Alejandro	1851	ARG	+113N	−12B	+83N	−29B	+79N	=43B	−19N	3.5	22.5	22.5	7.00	1809	-6.0
53	Dominguez, Diego	1972	ARG	+101B	−10N	=57B	+73N	+97B	−11N	−51B	3.5	22.0	23.5	8.25	1792	-26.0
54	Morales, Fabio	1835	ARG	−18B	+91N	+34B	−31N	+95B	−32N	=79B	3.5	21.0	23.0	9.25	1877	+6.2
55	Ortega, Agustin	1837	ARG	−3B	+87N	−31N	+91B	−46N	+66B	=69N	3.5	21.0	23.0	8.50	1756	-15.2
56	Giacame, Juan Manuel	1835	ARG	−1N	+94B	F	+45N	−58B	+88N	=34B	3.5	21.0	21.0	10.00	1924	+13.2
57	Arias, Lautaro	1761	ARG	−10B	+101N	=53N	−21B	−62N	+100B	+96N	3.5	19.5	21.0	6.75	1748	-6.8
58	Rojas, Lautaro	2108	ARG	+81N	F	−4B	=40B	+56N	−3B	=36N	3.0	25.0	25.0	10.00	1990	-32.0
59	Salomon Ferreyra, Jose Bautista	1886	ARG	+71N	=6B	F	−11N	+60B	=51N	−23B	3.0	24.5	24.5	10.50	1908	+0.4
60	Casco, Ezequiel	1709	ARG	−2N	+93B	=22N	=43B	−59N	+89B	−50N	3.0	22.5	24.5	8.25	1766	+7.0
61	Montacuto, Ricardo Omar	1873	ARG	+104N	=24B	−33N	+109B	−7N	=62B	−45B	3.0	21.5	22.5	5.75	1770	-17.8
62	Cabrera, Juan Cruz	1494	ARG	−22B	=99N	+69B	−70N	+57B	=61N	−44B	3.0	21.0	22.5	8.75	1762	+67.2
63	Cabrera , Melian	1795	ARG	−26N	+89B	−19N	+83B	−37N	+98B	−38B	3.0	21.0	22.5	6.00	1759	-14.4
64	Roa Abraham, Martin	0	ARG	+70N	−13B	−76N	+82B	+102N	−37B	−72N	3.0	20.0	21.0	6.50	1809	0.0
65	Ahumada, Agustin	1814	ARG	F	+100B	−24N	+98B	−13N	−18N	+88B	3.0	19.0	19.0	5.00	1841	+3.0
66	Voto, Emmanuel	1581	ARG	−38B	+112N	−49B	−34N	+83B	−55N	+98N	3.0	19.0	19.0	4.00	1645	+7.6
67	Vera Melian, Lucas Mateo	1659	ARG	−6N	−71B	+93N	+103B	−36N	−72B	+107N	3.0	18.5	19.5	4.00	1614	-13.6
68	Grosso, Fabricio	1716	ARG	−5B	−90N	+110B	+106N	−39B	+87N	−42B	3.0	18.5	18.5	3.00	1526	-25.0
69	Stagnaro, Aime	1687	ARG	F	−25B	−62N	+75B	=98N	+91N	=55B	3.0	17.5	17.5	7.50	1666	-5.4
70	Vecchio, Raul Antonio	1851	ARG	−64B	+96N	F	+62B	−24N	+107B	−43N	3.0	17.5	17.5	6.00	1819	-2.8
71	Cadiz, Tiziano	0	ARG	−59B	+67N	−42B	−79N	−92B	+94N	+87B	3.0	16.5	18.5	7.00	1674	0.0
72	Perez Javaloyes, Andres Carlos	1825	ARG	−28N	F	F	+78B	−34B	+67N	+64B	3.0	16.5	16.5	8.50	1854	+3.6
73	March, Ignacio	1685	ARG	−16B	F	+100N	−53B	−107N	+103B	+78N	3.0	14.0	14.0	5.00	1750	+8.8
74	Reinoso, Jeremias	1407	ARG	−49N	−88B	−82N	+104B	−81N	+112B	+89N	3.0	13.5	13.5	3.00	1411	-1.4
75	Bernard, Michel	1542	ARG	−21N	F	−80B	−69N	+110B	+111B	+82N	3.0	12.5	12.5	2.50	1601	+7.2
76	Valenzuela, Joao	1872	ARG	+103B	−23N	+64B	=38N	−15B	F	−21N	2.5	23.0	24.0	6.00	1835	-3.4
77	Zambianchi, Santino	1905	ARG	+108N	=33B	−6N	−48B	+86N	F	−25B	2.5	21.0	22.0	5.50	1840	-20.8
78	Fornes, Daniel Adrian	1509	ARG	−32B	+44N	−39B	−72N	=85B	+90N	−73B	2.5	20.5	22.5	7.25	1633	+28.0
79	Gutierrez, Kevin	1653	ARG	−17B	+110N	−37N	+71B	−52B	F	=54N	2.5	20.5	20.5	4.75	1605	-4.4
80	Elhom, Matias	1809	ARG	−8B	F	+75N	+107B	−21N	−47B	=86N	2.5	19.5	19.5	5.25	1722	-26.8
81	Zalaya, Ivo	1555	ARG	−58B	−92N	+85B	−35N	+74B	−44N	=83B	2.5	19.0	21.0	6.75	1557	-11.6
82	Mercau, Miguel Angel	1737	ARG	−4B	−98N	+74B	−64N	=90B	+105N	−75B	2.5	18.0	19.0	5.00	1523	-34.0
83	Marquina, Osmar	1448	ARG	+92B	−38N	−52B	−63N	−66N	+104B	=81N	2.5	18.0	19.0	4.25	1553	+19.2
84	Amarilla, Juan	1499	ARG	−19N	−50B	+113B	−44N	=103N	+102B	−48N	2.5	17.5	17.5	1.50	1545	+3.4
85	Castillo, Ticiano Gabriel	0	ARG	−36N	−46B	−81N	+93B	=78N	−96B	+102N	2.5	16.5	17.5	4.25	1510	0.0
86	Olivero Pazos, Diego	1606	ARG	−12N	F	−97B	+114N	−77B	+101N	=80B	2.5	13.5	13.5	2.75	1748	+15.4
87	Tobares, Augusto	1551	ARG	−13N	−55B	+108N	+92N	−42B	−68B	−71N	2.0	20.5	21.5	3.00	1615	+9.2
88	Machaca, Facundo	1662	ARG	−11B	+74N	F	−22B	+100N	−56B	−65N	2.0	20.5	20.5	4.50	1629	-7.8
89	Lopez Navarro, Rodolfo	1495	ARG	−43B	−63N	−44B	+110N	+106B	−60N	−74B	2.0	18.0	18.0	1.00	924	-24.2
90	Lecea, Martin Ignacio	1456	ARG	−47N	+68B	−36N	−99B	=82N	−78B	=103N	2.0	17.0	18.0	4.75	1545	+16.8
91	Alvarez, Santiago	1520	ARG	−29N	−54B	+104N	−55N	+108B	−69B	−106N	2.0	16.0	17.0	2.00	1020	-24.8
92	Valenzuela, Luis	1924	ARG	−83N	+81B	−51N	−87B	+71N	F	F	2.0	16.0	16.0	5.50	1371	-102.8
93	Sanchez, Rafael Sandro	1461	ARG	−35B	−60N	−67B	−85N	−94B	+110N	+104B	2.0	15.5	15.5	1.00	894	-35.6
94	Jara, Didier	1547	ARG	−31B	−56N	F	−100B	+93N	−71B	+111N	2.0	15.0	15.0	2.00	1477	-20.4
95	Aranea, Leonel	1651	ARG	−24N	+104B	−47N	+112B	−54N	F	F	2.0	15.0	15.0	1.00	1145	-19.6
96	Munoz, Kidora	1572	ARG	−30N	−70B	F	−101N	+114B	+85N	−57B	2.0	14.5	14.5	2.50	1480	-26.4
97	Gomez, Gustavo Javier	1800	ARG	−39B	F	+86N	+111B	−53N	F	F	2.0	12.5	12.5	2.50	1687	0.0
98	Medero, Hildo Rodrigo	1461	ARG	−37N	+82B	F	−65N	=69B	−63N	−66B	1.5	18.5	18.5	4.00	1553	+9.4
99	Munizaga, Miguel	1752	ARG	−27N	=62B	F	+90N	−49B	F	−39B	1.5	18.5	18.5	3.50	1636	-33.2
100	Carrizo, Lus Leopoldo	1435	ARG	F	−65N	−73B	+94N	−88B	−57N	=101B	1.5	15.0	15.0	2.75	1468	+4.4
101	Penaquio Caruso, Maximo Caetano	1495	ARG	−53N	−57B	F	+96B	−109N	−86B	=100N	1.5	14.0	14.0	2.75	1458	-16.0
102	Arganaraz, Silvio	1671	ARG	−33N	+108B	F	−25N	−64B	−84N	−85B	1.0	17.5	17.5	1.00	1080	-35.6
103	Garcia, Federico Francisco	0	ARG	−76N	−45B	F	−67N	=84B	−73N	=90B	1.0	17.0	19.0	2.25	1359	0.0
104	FIDE 20075510	0	—	−61B	−95N	−91B	−74N	+113B	−83N	−93N	1.0	14.5	14.5	0.00	760	0.0
105	Siebenlist, Daiana	1475	ARG	F	F	−20N	−50B	+112N	−82B	F	1.0	12.5	12.5	0.00	1009	-15.2
106	Tobares, Iktan Eliseo	0	ARG	F	F	−40N	−68B	−89N	F	+91B	1.0	12.0	12.0	2.00	1453	0.0
107	Allain, Thibaut	0	FRA	F	F	F	−80N	+73B	−70N	−67B	1.0	11.5	11.5	3.00	1558	0.0
108	FIDE 20075499	0	—	−77B	−102N	−87B	F	−91N	F	+113N	1.0	8.5	8.5	0.00	862	0.0
109	Bizzotto, Nicolas	1637	ARG	F	F	F	−61N	+101B	F	F	1.0	7.0	7.0	1.50	1684	+4.4
110	FIDE 20075502	0	—	−20N	−79B	−68N	−89B	−75N	−93B	F	0.0	17.0	17.0	0.00	827	0.0
111	FIDE 20075545	0	—	−42B	F	F	−97N	−45B	−75N	−94B	0.0	15.0	15.0	0.00	840	0.0
112	FIDE 20069936	0	—	−40N	−66B	F	−95N	−105B	−74N	F	0.0	13.0	13.0	0.00	794	0.0
113	FIDE 20075529	0	—	−52B	F	−84N	F	−104N	F	−108B	0.0	12.5	12.5	0.00	875	0.0
114	Massi, Ramiro	1524	ARG	−34B	F	−48N	−86B	−96N	F	F	0.0	12.0	12.0	0.00	907	-45.6

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Cabrera, Juan CruzARG
+67.2
3.0 pts · #58
2Herrera, Bautista SantinoARG
+66.0
3.5 pts · #61
3Acuna, AlvaroARG
+60.0
5.0 pts · #11

Top rating losers

1Valenzuela, LuisARG
-102.8
2.0 pts · #90
2Massi, RamiroARG
-45.6
0.0 pts · #110
3Arganaraz, SilvioARG
-35.6
1.0 pts · #102

Biggest upsets

R1+476 Elo gap
Marquina, Osmar1448 beat Valenzuela, Luis1924
R4+373 Elo gap
Tobares, Augusto1551 beat Valenzuela, Luis1924
R7+348 Elo gap
Escobar, Matias1624 beat Dominguez, Diego1972