ANIVERSARIO 20 ANOS MUNDIAL DE AJEDREZ

Open SwissStandard

74 players participated in this 7-round tournament, held from 14 Nov 2025 to 16 Nov 2025 in Villa de Merlo - San Luis, Argentina. 12 titled players from 5 federations. Top 10 Elo average was 2197, and top seed was Octavio Aaron Bazan Romero (🇦🇷 ARG, FM, 2312).

Claudio Olivares Olivares (🇨🇱 CHI, FM, 2250) won with 6.0/7, ahead of Daniel Perez (5.5) and Juan Andres Guerrero Cataldo (5.5). Olivares Olivares won solo starting round 5.

The biggest upset came in round 6: Lisandro Arias (1537) beat Abraham Chilaca (1819), a +282-point gap.

Location

🇦🇷Villa de Merlo - San Luis, Argentina

Dates

14 Nov 2025 → 16 Nov 2025

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 7 rounds

Top seed

🇦🇷FMOctavio Aaron Bazan Romero2312

Avg top 10

2,197

Participants

Titled players · 12

FM×7

CM×2

WIM×1

WFM×2

Federations · 5 represented

🇦🇷Argentina×66

🇨🇱Chile×3

🇺🇾Uruguay×1

🇻🇪Venezuela×1

Netherlands Antilles×1

Top 3

🥇
FMClaudio Olivares Olivares
🇨🇱CHI·2250
6.0pts·2374perf+10.3
🥈
FMDaniel Perez
🇦🇷ARG·2254
5.5pts·2259perf+4.4
🥉
CMJuan Andres Guerrero Cataldo
🇨🇱CHI·2133
5.5pts·2226perf+19.0

How it unfolded

Top 6 · 7 rounds

FM Claudio Olivares Olivares 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

Olivares Olivares6Herrera5.5Perez5.5Mussanti5.5Guerrero Cataldo5.5Perez Candelas5.5

R5–R7 · LEAD HELD

FM Claudio Olivares Olivares held the sole lead from R5 through R7 without losing it.

WIN STREAKS · 2 top finishers

FM Claudio Olivares Olivares 5 wins (R1–R5)FM Martin Herrera 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1FMClaudio Olivares Olivares	*	—	½	—
2FMMartin Herrera	—	*	—	—
3FMDaniel Perez	½	—	*	—
4FMDiego Mussanti	—	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	Pts	Bu C1	Bu	SB	Perf	Δ
1	Olivares Olivares, ClaudioFM	2250	CHI	+24N	+10B	+18N	+16B	+17N	=2B	=4N	6.0	28.0	32.0	26.50	2374	+10.3
2	Perez, DanielFM	2254	ARG	+25B	+21N	−16B	+38N	+9B	=1N	+17B	5.5	27.0	30.5	23.50	2259	+4.4
3	Guerrero Cataldo, Juan AndresCM	2133	CHI	+43B	+22N	−15B	+33N	+8B	+7N	=5B	5.5	27.0	30.0	23.25	2226	+19.0
4	Perez Candelas, Andres EloyFM	2219	VEN	=53B	+33N	+14B	=8N	+18B	+15N	=1B	5.5	27.0	29.5	22.75	2209	+1.8
5	Mussanti, DiegoFM	2208	ARG	=29N	+36B	+19B	+11N	=15B	+16N	=3N	5.5	25.5	29.0	22.50	2210	+3.0
6	Herrera, MartinFM	2190	ARG	+26B	+37N	+12B	=15N	−7B	+40N	+11B	5.5	25.5	29.0	22.00	2213	+7.8
7	Bazan Romero, Octavio AaronFM	2312	ARG	+30N	+13B	+20N	−17B	+6N	−3B	+19N	5.0	27.5	31.0	21.50	2205	-12.8
8	Besso, GuadalupeWIM	2016	ARG	=36N	+29B	+34N	=4B	−3N	+47B	+25N	5.0	25.5	28.5	18.50	2022	+5.8
9	Tobares Dilascio, Oriana HelenaWFM	2099	ARG	+48B	=34N	+32B	=28N	−2N	+37B	+21B	5.0	24.0	27.0	17.75	2035	-12.0
10	Valenzuela, Joao	1854	ARG	+51B	−1N	+43B	=31N	=32B	+29N	+15B	5.0	23.5	26.5	17.00	1947	+18.4
11	Di Cola, Valentino Jose	1899	ARG	=41N	+63B	+53N	−5B	+22N	+24B	−6N	4.5	25.0	26.5	13.75	1918	+14.0
12	Tobares, LeandroFM	2115	ARG	F	+40B	−6N	+30B	+23N	+17N	=20B	4.5	24.5	26.5	17.00	2186	+13.0
13	Izaza, Agustin David	1862	ARG	+68B	−7N	+66B	+35N	=19B	−20N	+31B	4.5	21.5	22.5	11.50	1903	+19.2
14	Mena, Ailen OrianaWFM	1855	AHO	=63N	+41B	−4N	F	+31B	+32N	+16B	4.5	21.5	21.5	15.25	1973	+20.0
15	Cuberli, Emiliano	2107	ARG	+52N	+46B	+3N	=6B	=5N	−4B	−10N	4.0	30.0	32.5	16.50	2069	-2.6
16	Tomeo, Nicolas	2130	ARG	+44N	+27B	+2N	−1N	+28B	−5B	−14N	4.0	29.5	32.5	16.50	2053	-9.2
17	Lopez Miller, Indalecio	2161	ARG	+35N	+38B	+23N	+7N	−1B	−12B	−2N	4.0	28.5	32.0	16.00	2123	-3.0
18	Lima, Damian	1984	ARG	+49B	+58N	−1B	+25N	−4N	=34B	=22N	4.0	26.0	28.0	12.75	1912	-8.8
19	Palma Neira, Eliseo MaximilianoCM	1972	CHI	+31N	+67B	−5N	=24B	=13N	+33B	−7B	4.0	26.0	27.0	12.25	1912	-8.8
20	Barloa, Enzo	2050	ARG	+39B	+47N	−7B	=22N	F	+13B	=12N	4.0	24.5	27.5	15.25	2049	+2.6
21	Besso, Javier Alejandro	1848	ARG	+55N	−2B	−35N	+60B	+26N	+23B	−9N	4.0	24.5	26.5	12.50	1850	+2.6
22	Illanes, Gabriel	1823	ARG	+45N	−3B	+72N	=20B	−11B	+52N	=18B	4.0	23.5	24.5	10.50	1875	+15.6
23	Farhat, Francisco	1972	ARG	+42B	+60N	−17B	+26N	−12B	−21N	+43B	4.0	23.0	25.0	12.50	1846	-16.2
24	Sanchez, Tiago	1742	ARG	−1B	+68N	+70B	=19N	+27B	−11N	=40B	4.0	23.0	24.0	9.75	1850	+19.8
25	Ruiz, Pablo Horacio	1756	ARG	−2N	+59B	+45N	−18B	+73N	+38B	−8B	4.0	23.0	23.0	8.50	1819	+9.0
26	Herrera, Raquel	1679	ARG	−6N	+55B	+67N	−23B	−21B	+51N	+49B	4.0	22.0	23.0	9.50	1728	+5.2
27	Vecchio, Raul Antonio	1830	ARG	+54B	−16N	+39B	F	−24N	+44B	+30N	4.0	20.5	20.5	12.50	1837	+3.0
28	Garibaldi, Lucio	1893	ARG	+59B	+70N	F	=9B	−16N	=30B	+34N	4.0	19.0	19.0	10.75	1924	+8.6
29	Lopez, Hector	1725	ARG	=5B	−8N	+49B	F	+50N	−10B	+45N	3.5	24.5	24.5	11.75	1797	+3.8
30	Cabrera , Melian	1759	ARG	−7B	+42N	+60B	−12N	+49B	=28N	−27B	3.5	24.0	26.0	10.50	1787	+6.0
31	Arias, Lisandro	1537	ARG	−19B	+61N	+47B	=10B	−14N	+46B	−13N	3.5	24.0	26.0	10.50	1795	+65.6
32	San Martin, Daniel	1799	ARG	=64N	+62B	−9N	+41B	=10N	−14B	=36N	3.5	23.5	25.0	10.50	1702	-12.8
33	Navarro, Alberto	1774	ARG	+50N	−4B	+69N	−3B	+58B	−19N	=39B	3.5	23.5	24.5	7.75	1762	-5.4
34	Ahumada, Agustin	1816	ARG	+74N	=9B	−8B	=57N	+48B	=18N	−28B	3.5	23.0	23.0	8.50	1811	-2.0
35	Vera Melian, Lucas Mateo	1651	ARG	−17B	+51N	+21B	−13B	−37N	+60N	=42B	3.5	22.5	24.5	10.75	1719	+20.0
36	Olivero Pazos, Ivan	1551	ARG	=8B	−5N	+54B	−46N	+56B	=57N	=32B	3.5	22.0	24.0	10.25	1706	+18.4
37	Dotti, Fernando	1829	ARG	+65N	−6B	=44N	F	+35B	−9N	+48B	3.5	21.5	21.5	9.50	1822	+0.4
38	Barrotto, Jose Ignacio	1845	ARG	+71B	−17N	+58B	−2B	=43N	−25N	+57B	3.5	20.5	21.5	6.50	1778	-12.6
39	Argento, Ramon Francisco	1585	ARG	−20N	+74B	−27N	+45B	−44N	+50B	=33N	3.5	20.5	20.5	7.75	1479	-9.8
40	Lopez, Jose Luis	1826	ARG	+73B	−12N	F	+44B	+53N	−6B	=24N	3.5	19.5	19.5	7.50	1861	+6.2
41	Garduno, Paolo	1513	ARG	=11B	−14N	+56B	−32N	−52B	+64N	+72B	3.5	19.0	20.0	7.25	1599	+14.0
42	Giraudo, Jose Antonio	1526	ARG	−23N	−30B	=65N	+62B	+54N	=43B	=35N	3.5	18.5	20.0	8.50	1574	+22.8
43	Bertello, Rogelio	1626	ARG	−3N	+65B	−10N	+69B	=38B	=42N	−23N	3.0	23.0	24.0	6.00	1674	+8.8
44	Herrera, Bautista Santino	1615	ARG	−16B	+71N	=37B	−40N	+39B	−27N	=56B	3.0	21.0	22.0	7.50	1700	+19.2
45	Cortez Estorne, Alexander	0	ARG	−22B	+48N	−25B	−39N	+68B	+59N	−29B	3.0	20.0	21.0	6.00	1589	0.0
46	Chilaca, Abraham	1819	ARG	+61B	−15N	F	+36B	F	−31N	+52B	3.0	19.5	19.5	8.00	1702	-23.6
47	Arias, Lautaro	1781	ARG	F	−20B	−31N	+68N	+57B	−8N	+58B	3.0	19.0	20.0	5.00	1715	-20.0
48	Olivero Pazos, Diego	1604	ARG	−9N	−45B	+64N	+55B	−34N	+69B	−37N	3.0	19.0	20.0	5.00	1642	+1.8
49	Benitez, Geronimo	1539	ARG	−18N	+50B	−29N	+67B	−30N	+73B	−26N	3.0	19.0	19.0	4.00	1465	-21.2
50	Soloa, Ismael	0	ARG	−33B	−49N	+51B	+59N	−29B	−39N	+69N	3.0	18.5	19.5	6.00	1530	0.0
51	Espinoza, Faustino	1473	ARG	−10N	−35B	−50N	+61B	+67N	−26B	+73N	3.0	18.5	18.5	3.00	1458	-7.2
52	Rojas, Agostina	1608	ARG	−15B	=54N	+62N	−53B	+41N	−22B	−46N	2.5	19.5	21.5	6.75	1530	-28.8
53	Santos, Martin Ezequiel	1735	ARG	=4N	+64B	−11B	+52N	−40B	F	F	2.5	17.5	17.5	6.75	1780	+3.6
54	Galendes, Joaquin	1442	ARG	−27N	=52B	−36N	+64B	−42B	−66N	+63N	2.5	16.5	18.0	4.25	1406	-14.4
55	Hernandez, Ruben	1457	ARG	−21B	−26N	+61B	−48N	+72B	−58N	=66B	2.5	16.5	17.5	3.75	1464	-0.6
56	Santarsola, Marcos	0	ARG	F	F	−41N	+63B	−36N	+62B	=44N	2.5	16.5	16.5	5.00	1452	0.0
57	Escobar, Matias	1610	ARG	F	F	+63N	=34B	−47N	=36B	−38N	2.0	19.5	19.5	5.00	1622	0.0
58	Voto, Emmanuel	1586	ARG	F	−18B	−38N	+70B	−33N	+55B	−47N	2.0	17.5	17.5	3.50	1590	-5.2
59	Vesco, Armando	1496	ARG	−28N	−25N	+71B	−50B	+70N	−45B	−61N	2.0	17.0	18.0	2.00	1638	+24.4
60	Sosa Mattioli, Santino Nicolas	1492	ARG	F	−23B	−30N	−21N	+71B	−35B	+67N	2.0	17.0	17.0	2.00	1481	-8.4
61	Dali Nievas, Thiago	0	ARG	−46N	−31B	−55N	−51N	F	+70B	+59B	2.0	15.0	15.0	3.00	1414	0.0
62	FIDE 20073380	0	—	F	−32N	−52B	−42N	+74B	−56N	+64B	2.0	13.5	13.5	1.50	829	0.0
63	Lopez Navarro, Rodolfo	1478	ARG	=14B	−11N	−57B	−56N	−64B	+71N	−54B	1.5	17.5	18.5	3.25	1500	-1.4
64	Luberiaga, Leonor	0	URU	=32B	−53N	−48B	−54N	+63N	−41B	−62N	1.5	17.0	18.5	3.25	1402	0.0
65	Arias, Benicio	1430	ARG	−37B	−43N	=42B	F	−69N	−72N	+71B	1.5	13.0	13.0	2.75	1379	-18.8
66	Bizzotto, Nicolas	1646	ARG	F	F	−13N	F	F	+54B	=55N	1.5	9.5	9.5	3.75	1587	-9.2
67	Gagliardi, Nahuel	0	ARG	F	−19N	−26B	−49N	−51B	+68N	−60B	1.0	17.0	17.0	1.00	1333	0.0
68	Martin, Maria De Los Angeles	1482	ARG	−13N	−24B	+74N	−47B	−45N	−67B	F	1.0	15.5	15.5	0.00	995	-16.8
69	Guzman, Roberto Luis	1465	ARG	F	F	−33B	−43N	+65B	−48N	−50B	1.0	14.0	14.0	1.50	1416	-11.6
70	Sanchez, Roberto	1447	ARG	F	−28B	−24N	−58N	−59B	−61N	+74N	1.0	14.0	14.0	0.00	868	-19.4
71	Cavilla, Julio Cesar	1456	ARG	−38N	−44B	−59N	+74B	−60N	−63B	−65N	1.0	13.5	13.5	0.00	759	-45.6
72	Monti, Agustin	1578	ARG	F	F	−22B	F	−55N	+65B	−41N	1.0	11.5	11.5	1.50	1363	-46.0
73	Lobo Villamil, Juana	1419	ARG	−40N	F	F	F	−25B	−49N	−51B	0.0	14.5	14.5	0.00	847	-38.4
74	FIDE 20039824	0	—	−34B	−39N	−68B	−71N	−62N	F	−70B	0.0	12.0	12.0	0.00	757	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Arias, LisandroARG
+65.6
3.5 pts · #40
2Vesco, ArmandoARG
+24.4
2.0 pts · #46
3Giraudo, Jose AntonioARG
+22.8
3.5 pts · #39

Top rating losers

1Monti, AgustinARG
-46.0
1.0 pts · #64
2Cavilla, Julio CesarARG
-45.6
1.0 pts · #74
3Lobo Villamil, JuanaARG
-38.4
0.0 pts · #73

Biggest upsets

R6+282 Elo gap
Arias, Lisandro1537 beat Chilaca, Abraham1819
R7+275 Elo gap
WFMMena, Ailen Oriana1855 beat Tomeo, Nicolas2130
R7+253 Elo gap
Valenzuela, Joao1854 beat Cuberli, Emiliano2107