CChessStats

IRT sub 1800 primavera en Valdivia 2025

Open SwissStandard

23 players participated in this 5-round tournament, held on 22 Nov 2025 in Valdivia, Chile. Top 10 Elo average was 1669, and top seed was Alex Flores Castro (🇨🇱 CHI, 1731).

Angelo Hernandez Olave (🇨🇱 CHI, 1707) won with 4.0/5, ahead of Arturo Nicolas Araneda Alcaino (4.0) and Dario Andre Maldonado Lopez (4.0). Hernandez Olave shared the lead from round 4, winning on tie-break.

The biggest upset came in round 1: David Alonso Diaz Rosas (1495) beat Sebastian Andres Contreras Herrera (1714), a +219-point gap.

Location
🇨🇱Valdivia, Chile
Dates
22 Nov 2025
Time control
Standard: 30 minutes for game with 30 seconds increment from move 1
System
Swiss · 5 rounds
Top seed
🇨🇱Alex Flores Castro1731
Avg top 10
1,669
Participants
23
Federations · 1 represented
🇨🇱Chile×23
Top 3

How it unfolded

Top 6 · 5 rounds

Tight race until R5; 3 players tied at 4.0/5, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 3 at the finish.

Co-leaders
10
5
1
2
3
1.52.545R1R2R3R4R5
Hernandez Olave4Araneda Alcaino4Maldonado Lopez4Moreira Roldan3.5Quezada Castillo3.5Toro Medina3.5
R5 · TIEBREAK CLUSTER

3 players finish on 4.0/5. Hernandez Olave takes the title on Buchholz Cut1 (14.5).

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Angelo Hernandez Olave beat Arturo Nicolas Araneda Alcaino (Black).

WIN STREAKS · 2 top finishers

Arturo Nicolas Araneda Alcaino 3 wins (R1–R3)Dario Andre Maldonado Lopez 4 wins (R2–R5)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Angelo Hernandez Olave*
1
—
½
2Arturo Nicolas Araneda Alcaino
0
*—
1
3Dario Andre Maldonado Lopez——*
0
4Leonardo Moreira Roldan
½
0
1
*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Hernandez Olave, Angelo1707CHI+9B+6N=4B+2N=5B4.014.517.514.001870+39.6
2Araneda Alcaino, Arturo Nicolas1706CHI+21N+17B+5N−1B+4B4.013.013.59.501852+35.2
3Maldonado Lopez, Dario Andre0CHI−4B+15N+19B+13N+9B4.011.512.59.0015940.0
4Moreira Roldan, Leonardo1669CHI+3N+7B=1N+12B−2N3.515.017.511.501699+6.4
5Quezada Castillo, Joaquin1689CHI+18B+13N−2B+7N=1N3.513.514.58.501675-1.2
6Toro Medina, Mathias Alexander1632CHI+22N−1B=8N+17B+12N3.511.511.56.001717+8.6
7Diaz Rosas, David Alonso1495CHI+10B−4N+20B−5B+16N3.012.013.06.001680+38.4
8Flores Castro, Alex1731CHI=12B+10N=6B=14N=15B3.011.514.08.501683-5.6
9Tobar Sala, Juan Carlos1451CHI−1N+22B+23N+16B−3N3.010.010.02.001676+11.4
10Contreras Herrera, Sebastian Andres1714CHI−7N−8B+21N+23B+14B3.09.09.03.001569-30.0
11Colther Montecinos, Eva0CHI−16N+21B−14N+22B+18N3.06.06.01.5015250.0
12Iturra Gutierrez, Maria Ignacia1501CHI=8N+20B+16N−4N−6B2.512.013.04.501582+15.2
13Gajardo Hermosilla,Mathias Benjamin0CHI+14N−5B=17N−3B+23N2.512.012.03.5016120.0
14Araneda Wolnitzky, Andres Nestor1602CHI−13B+18N+11B=8B−10N2.511.512.55.501618+3.2
15Pizarro Rozas, Aaron1601CHI−20N−3B+22N+19B=8N2.59.09.02.501730+6.8
16Paredes Santana, Jeremias Andres1641CHI+11B+19N−12B−9N−7B2.011.512.54.00683-85.6
17Saldivar Troncoso, Juan Daniel1545CHI+23B−2N=13B−6N=21B2.010.510.51.501324-31.6
18Caceres Monroy, Josefa Hanan1409CHI−5N−14BF+20N−11B1.010.010.01.00846-16.4
19Vera Quijon, Pedro Anibal0CHIF−16B−3N−15N+20B1.09.59.51.008230.0
20Rademacher Alvarez, Celeste Belen0CHI+15B−12N−7N−18B−19N1.09.010.02.5013090.0
21Torres Lagos, Matias Alberto1447CHI−2B−11N−10BF=17N0.512.012.01.001384-8.8
22Chodiman Nahuelpan, Benjamin Cristobal0CHI−6B−9N−15B−11NF0.012.012.00.007620.0
23Rademacher Otero, Annelizze0CHI−17NF−9B−10N−13B0.010.510.50.007710.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets