CChessStats

IRT Sub 1800 Clasificatorio a la Final de Chile

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18 players participated in this 5-round tournament, held on 19 Dec 2025 in Quillota, Region Valparaiso, Chile, Chile. Top 10 Elo average was 1625, and top seed was Wieland Siegfried Muller Koenig (🇨🇱 CHI, 1778).

Rafael Gonzalez Osorio (🇨🇱 CHI, 1593) won with 4.0/5, ahead of Francisco Tricot Wong (4.0) and Weiner Andrey Pulido Ramirez (4.0). Gonzalez Osorio took the lead from round 3, winning on tie-break.

The biggest upset came in round 2: Rafael Gonzalez Osorio (1593) beat Eduardo Enrique Coaguila Amesquita (1708), a +115-point gap.

Location
🇨🇱Quillota, Region Valparaiso, Chile, Chile
Dates
19 Dec 2025
Time control
Standard: 30 minutes for game with 30 seconds increment from move 1
System
Swiss · 5 rounds
Avg top 10
1,625
Participants
18
Federations · 1 represented
🇨🇱Chile×15
Top 3

How it unfolded

Top 6 · 5 rounds

Tight race until R3; 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
8
4
1
2
3
1.52.545R1R2R3R4R5
R3–R5 · LEAD HELD

Rafael Gonzalez Osorio held the sole lead from R3 through R5 without losing it.

R5 · TIEBREAK CLUSTER

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

R3 · HEAD-TO-HEAD · WINNER VS 2ND

Rafael Gonzalez Osorio beat Francisco Tricot Wong (White).

Key matchups · top 4

Head-to-head between the four finishers

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Gonzalez Osorio, Rafael1593CHI+4N+13B+2B=5N=3N4.014.516.513.001900+78.4
2Tricot Wong, Francisco1692CHI+11N+6B1N+9B+5B4.012.515.011.001821+15.6
3Pulido Ramirez, Weiner Andrey1620CHI+14B+7N=5B+12N=1B4.012.514.511.001802+37.6
4Contreras Vega, Francisco1504CHI1B+17N+8N+11B=6N3.512.512.57.001647+30.0
5Muller Koenig, Wieland Siegfried1778CHI+9N+8B=3N=1B2N3.015.017.59.501675-12.6
6Guerra Navarrete, Ximena Trinidad De Lourdes1563CHI+18B2N=10B+14N=4B3.012.012.05.001534-6.4
7Perez Rojas, Alonso0CHI+15B3B=9N=10N+13B3.011.012.05.5016020.0
8Prado Villalobos, Diego Esteban1594CHI+17B5N4B+16N+12B3.09.59.53.001505-14.4
9Vergara Arenas, Amapola Angely1516CHI5B+14N=7B2N+15B2.512.013.04.501628+22.4
10Llanos Toro, Ian Andres1482CHI13N+16B=6N=7B=11N2.510.511.04.751451-5.6
11Araya Varela, Valentina Amanda Isidora1456CHI2B+18N+16B4N=10B2.510.510.51.751286-23.6
12Zamora Zamora, Cristian1607CHI=16N+15B+13N3B8N2.510.010.53.251626+2.2
13Coaguila Amesquita, Eduardo Enrique1708CHI+10B1N12B+15N7N2.012.013.03.501566-30.4
14Fernandez Tejada, Isabella Paz1447CHI3N9B+18N6B+17N2.09.59.50.00767-42.8
15Canelo Herrera, Carlos1582CHI7N12N+17B13B9N1.010.010.00.00810-55.6
16FIDE 34891750=12B10N11N8BF0.510.510.51.2512130.0
17FIDE 348615008N4B15NF14B0.09.59.50.007350.0
18FIDE 348083606N11B14BFF0.07.57.50.006930.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers