IRT de otono 2025

Open SwissStandard

39 players participated in this 5-round tournament, held from 22 May 2025 to 19 Jun 2025 in Concepcion, Chile. Top 10 Elo average was 1770, and top seed was Oscar Cartes Esquivel (🇨🇱 CHI, 1912).

Uriel Zapata Sierra (🇨🇱 CHI, 1789) won with 5.0/5, ahead of Agustin Saez Fernandez (5.0) and Francisco Rivas Araneda (4.0). Zapata Sierra shared the lead from round 2, winning on tie-break.

The biggest upset came in round 1: Arturo Morales Valderrama (1436) beat Francisco Rivas Araneda (1767), a +331-point gap.

Location

🇨🇱Concepcion, Chile

Dates

22 May 2025 → 19 Jun 2025

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 5 rounds

Top seed

🇨🇱Oscar Cartes Esquivel1912

Avg top 10

1,770

Participants

Federations · 1 represented

🇨🇱Chile×32

Top 3

🥇
Uriel Zapata Sierra
🇨🇱CHI·1789
5.0pts·2474perf+35.6
🥈
Agustin Saez Fernandez
🇨🇱CHI·1749
5.0pts·2534perf+76.4
🥉
Francisco Rivas Araneda
🇨🇱CHI·1767
4.0pts·1743perf-2.8

How it unfolded

Top 6 · 5 rounds

Tight race until R5; 2 players tied at 5.0/5, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.

Co-leaders

Zapata Sierra5Saez Fernandez5Rivas Araneda4Alarcon Diaz3.5Allende Munoz3Cartes Esquivel3

R5 · TIEBREAK CLUSTER

2 players finish on 5.0/5. Zapata Sierra takes the title on Buchholz Cut1 (11.5).

WIN STREAKS · 3 top finishers

Uriel Zapata Sierra 5 wins (R1–R5)Agustin Saez Fernandez 5 wins (R1–R5)Francisco Rivas Araneda 4 wins (R2–R5)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Uriel Zapata Sierra	*	—	—	—
2Agustin Saez Fernandez	—	*	—	1
3Francisco Rivas Araneda	—	—	*	—
4Emilia Esperanza Alarcon Diaz	—	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	Pts	Bu C1	Bu	SB	Perf	Δ
1	Zapata Sierra, Uriel	1789	CHI	+31B	+9N	+12B	+6N	+7B	5.0	11.5	12.5	12.50	2474	+35.6
2	Saez Fernandez, Agustin	1749	CHI	+39B	+4N	+16B	+17N	+5B	5.0	10.5	10.5	10.50	2534	+76.4
3	Rivas Araneda, Francisco	1767	CHI	−11N	+22B	+21N	+27B	+20B	4.0	8.5	9.5	7.00	1743	-2.8
4	Alarcon Diaz, Emilia Esperanza	1612	CHI	+36N	−2B	+18N	=13B	+11N	3.5	12.0	12.0	5.75	1643	+5.6
5	Allende Munoz, Daniel Alonso	1823	CHI	+23B	+27N	+8B	F	−2N	3.0	13.0	14.0	6.00	1854	+6.3
6	Cartes Esquivel, Oscar	1912	CHI	+26B	+19N	F	−1B	+8N	3.0	12.5	13.5	6.00	1871	-2.6
7	Diaz Sepulveda, Jorge	1662	CHI	+24B	+17N	+25B	F	−1N	3.0	11.5	13.0	5.00	1802	+14.8
8	Pereira Pincheira, Cristian	1713	CHI	+34B	+14N	−5N	+9B	−6B	3.0	11.5	12.5	6.50	1736	+4.4
9	Orrego Astudillo, Angelo	1626	CHI	+33B	−1B	+24N	−8N	+18B	3.0	11.5	12.5	4.50	952	-26.4
10	Carrasco Esparza, Matias Julian	1590	CHI	=15B	=28N	+30B	−16N	+26N	3.0	6.5	7.5	3.75	1627	+6.0
11	Morales Valderrama, Arturo	1436	CHI	+3B	−16N	+28B	=12N	−4B	2.5	12.0	13.0	6.25	1685	+61.2
12	Gallardo Quinones, Pablo	1706	CHI	+22N	+21B	−1N	=11B	F	2.5	11.5	13.5	5.25	1585	-17.6
13	Miranda Iubini, Noa	1740	CHI	+29N	+20B	F	=4N	F	2.5	10.5	11.5	4.75	1786	+4.0
14	Saa Manriquez, Gaspar Facundo	1584	CHI	+18N	−8B	+32N	F	=24B	2.5	9.0	10.0	3.75	914	-12.8
15	FIDE 3453448	0	—	=10N	−25B	+37N	F	+29B	2.5	8.0	8.0	2.50	1564	0.0
16	Bahamonde Zamorano, Arturo Capablanca	1686	CHI	F	+11B	−2N	+10B	F	2.0	13.0	13.0	5.50	1718	+6.0
17	Rodriguez Alarcon, Vicente Benjamin	1814	CHI	+37N	−7B	+26N	−2B	F	2.0	11.0	11.0	1.00	1614	-39.6
18	Riquelme Chavarria, Rafael	0	CHI	−14B	+34N	−4B	+29N	−9N	2.0	10.0	11.0	2.00	807	0.0
19	Claret Pinto, Maximiliano Agustin	1667	CHI	+35B	−6B	+23N	−20N	F	2.0	9.5	10.5	3.00	1542	-21.2
20	Fontanilla Melendez, Pedro Ignacio	1571	CHI	+30B	−13N	F	+19B	−3N	2.0	9.5	9.5	3.00	1600	+4.0
21	Soto Riveros, Juan	1527	CHI	+32B	−12N	−3B	+22N	F	2.0	9.5	9.5	3.00	937	-18.8
22	FIDE 3486672	0	—	−12B	−3N	+33N	−21B	+36N	2.0	9.5	9.5	1.00	867	0.0
23	Saa Manriquez, Antonia Valentina	1514	CHI	−5N	+38B	−19B	+30N	F	2.0	8.0	8.0	1.00	945	-17.6
24	Munoz Solar, Joaquin Alfonso	0	CHI	−7N	+37B	−9B	F	=14N	1.5	9.5	9.5	1.25	1506	0.0
25	Oyarzun Cayo, Patricio Alejandro	0	CHI	=28B	+15N	−7N	−26B	F	1.5	7.5	8.5	3.00	1347	0.0
26	Saa Manriquez, Federico Tomas	1542	CHI	−6N	F	−17B	+25N	−10B	1.0	9.5	10.5	1.50	972	-28.0
27	Ramos Valdes, Miguel Leonardo	1663	CHI	+38N	−5B	F	−3N	F	1.0	9.0	9.0	0.00	995	-13.0
28	Cid Zambrano, Elias	1654	CHI	=25N	=10B	−11N	F	F	1.0	8.5	9.5	2.25	1321	-34.8
29	Araneda Orellana, Francisco Ignacio	0	CHI	−13B	−30N	+35N	−18B	−15N	1.0	8.0	9.0	1.00	942	0.0
30	FIDE 3451720	0	—	−20N	+29B	−10N	−23B	F	1.0	8.0	8.0	1.00	759	0.0
31	Cerda Rifo, Cesar	1461	CHI	−1N	F	F	+36B	F	1.0	8.0	8.0	0.00	990	-4.8
32	FIDE 3462455	0	—	−21N	F	−14B	+34N	F	1.0	7.0	7.0	1.00	755	0.0
33	Oyarzun Nunez, Gabriel Alejandro	0	CHI	−9N	F	−22B	+37B	F	1.0	7.0	7.0	0.00	1562	0.0
34	Esveile Cuevas, Agustina Almendra	0	CHI	−8N	−18B	+38N	−32B	F	1.0	7.0	7.0	0.00	914	0.0
35	FIDE 3486680	0	—	−19N	F	−29B	+38B	F	1.0	5.0	5.0	0.00	867	0.0
36	FIDE 3477797	0	—	−4B	F	F	−31N	−22B	0.0	8.5	8.5	0.00	737	0.0
37	Baeza Avello, Pedro Efrain	1497	CHI	−17B	−24N	−15B	−33N	F	0.0	7.0	7.0	0.00	1013	-5.2
38	Marin Poveda, Jose Carlos	0	CHI	−27B	−23N	−34B	−35N	F	0.0	5.0	6.0	0.00	789	0.0
39	FIDE 3428826	0	—	−2N	F	F	F	F	0.0	5.0	5.0	0.00	951	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Saez Fernandez, AgustinCHI
+76.4
5.0 pts · #2
2Morales Valderrama, ArturoCHI
+61.2
2.5 pts · #6
3Zapata Sierra, UrielCHI
+35.6
5.0 pts · #1

Top rating losers

1Rodriguez Alarcon, Vicente BenjaminCHI
-39.6
2.0 pts · #8
2Cid Zambrano, EliasCHI
-34.8
1.0 pts · #21
3Saa Manriquez, Federico TomasCHI
-28.0
1.0 pts · #38

Biggest upsets

R1+331 Elo gap
Morales Valderrama, Arturo1436 beat Rivas Araneda, Francisco1767
R3+218 Elo gap
Morales Valderrama, Arturo1436 beat Cid Zambrano, Elias1654
R2+152 Elo gap
Diaz Sepulveda, Jorge1662 beat Rodriguez Alarcon, Vicente Benjamin1814