CChessStats

Abierto de Invierno 2025

Open SwissStandard

25 players participated in this 6-round tournament, held from 14 Aug 2025 to 16 Aug 2025 in San Miguel, Bs As, Argentina. Top 10 Elo average was 1814, and top seed was Cristian Zarate (πŸ‡¦πŸ‡· ARG, 2067).

Guadalupe Milagros Mayeregger (πŸ‡¦πŸ‡· ARG, 1875) won with 4.5/6, ahead of Cristian Zarate (4.5) and Juan Ignacio Peredo (4.0). Mayeregger won on tie-break after catching the field in the final round.

The biggest upset came in round 1: Martin Altinier (1441) beat Julio Leonel Lizardo (1734), a +293-point gap.

Location
πŸ‡¦πŸ‡·San Miguel, Bs As, Argentina
Dates
14 Aug 2025 β†’ 16 Aug 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss Β· 6 rounds
Top seed
πŸ‡¦πŸ‡·Cristian Zarate2067
Avg top 10
1,814
Participants
25
Federations Β· 1 represented
πŸ‡¦πŸ‡·ArgentinaΓ—25
Top 3

How it unfolded

Top 6 Β· 6 rounds

Tight race until R4; 2 players tied at 4.5/6, decided on Buchholz.

Co-leaders
8
4
2
1
1
2
1.534.56R1R2R3R4R5R6Peredo takes lead
Zarate4.5Mayeregger4.5Arce4Zarate4Garcia4Peredo4
R5 Β· LEADER CHANGE17 Aug

Juan Ignacio Peredo takes the sole lead (4.0/5).

R6 Β· TIEBREAK CLUSTER

2 players finish on 4.5/6. Mayeregger takes the title on Buchholz Cut1 (16.5).

R3 Β· HEAD-TO-HEAD Β· WINNER VS 2ND

Cristian Zarate drew with Guadalupe Milagros Mayeregger (White).

Key matchups Β· top 4

Head-to-head between the four finishers
Player1234
1Cristian Zarate*
Β½
β€”
β€”
2Guadalupe Milagros Mayeregger
Β½
*β€”
0
3Tomas Arceβ€”β€”*β€”
4Lucas Ariel Zarate
β€”
1
β€”*

Grille amΓ©ricaine

#PlayerEloFedR1R2R3R4R5R6PtsBu C1BuSBPerfΞ”
1Mayeregger, Guadalupe Milagros1875ARG+23B+16N=2Nβˆ’5B+15B+3N4.516.517.511.251891+3.0
2Zarate, Cristian2067ARG+25B+18N=1B+10NF+8B4.516.016.510.252103+3.0
3Peredo, Juan Ignacio0ARG=4B+11N=8B+7N+6Nβˆ’1B4.019.022.014.0017690.0
4Garcia, Manuel Nicolas1641ARG=3N+13B=7Nβˆ’6B+9N+17B4.017.519.511.751999+64.0
5Zarate, Lucas Ariel1907ARG+15N+9BF+1NF+10B4.017.017.012.502501+40.0
6Arce, Tomas0ARG+19B=8N=14B+4Nβˆ’3B+15N4.015.517.010.2517460.0
7Taborda, Martin Alejandro1724ARGF+22N=4Bβˆ’3B+23N+12B3.513.513.57.501933+32.8
8Alvarez, Mia Morena1738ARGF=6B=3N+12B+17Nβˆ’2N3.018.520.59.001831+13.6
9Lugo, Lisandro1562ARG+11Bβˆ’5N+20Bβˆ’17Nβˆ’4B+23N3.014.515.55.501608+8.0
10Gambini, Juan Carlos1737ARG+17N+21BFβˆ’2B+14Nβˆ’5N3.014.514.56.001792+5.0
11Lope de Vergara, Gustavo1767ARGβˆ’9Nβˆ’3B=25N=22B+16N+14B3.013.013.55.501627-14.8
12Blanco, Alejandro Javier1544ARGF+25N+16Bβˆ’8N+24Bβˆ’7N3.012.513.03.501708+17.4
13Villar Gauto, Silvio Mariano1863ARGFβˆ’4N+24Bβˆ’14N+18B+20N3.010.510.54.001631-44.0
14Frias Perez, Mateo1687ARGβˆ’16B+23N=6N+13Bβˆ’10Bβˆ’11N2.515.016.06.001736+10.4
15Amerio, Pablo1630ARGβˆ’5B+19N+18BFβˆ’1Nβˆ’6B2.015.515.53.001739+20.8
16Lopez, Esteban Nicolas0ARG+14Nβˆ’1Bβˆ’12Nβˆ’23Bβˆ’11B+18N2.014.515.54.0015240.0
17Perez Mosqueda, Valeria Ritzabeth1506ARGβˆ’10BF+21N+9Bβˆ’8Bβˆ’4N2.014.514.54.501476-6.4
18Altinier, Martin1441ARG+24Nβˆ’2Bβˆ’15N=21Bβˆ’13Nβˆ’16B1.513.014.01.751568+17.6
19Nievas, Daniel Mario1732ARGβˆ’6Nβˆ’15B+22B=20NFF1.59.09.02.251627-5.8
20Gigena, Federico0ARGFFβˆ’9N=19B+21Nβˆ’13B1.59.09.02.2514450.0
21Ramos Otero, Tobias0ARGFβˆ’10Nβˆ’17B=18Nβˆ’20B+24N1.59.09.01.7515170.0
22Ayub Soto, Mateo1623ARGFβˆ’7Bβˆ’19N=11N+25BF1.58.58.52.0016280.0
23Villar, Silvio Eduardo1581ARGβˆ’1Nβˆ’14BF+16Nβˆ’7Bβˆ’9B1.015.515.52.00912-53.2
24Lizardo, Julio Leonel1734ARGβˆ’18BFβˆ’13N+25Bβˆ’12Nβˆ’21B1.09.59.50.501427-62.4
25Ouvrard Pauer, Roman1637ARGβˆ’2Nβˆ’12B=11Bβˆ’24Nβˆ’22NF0.513.013.01.501375-56.8

Key insights

Biggest movers and upsets β€” the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets
Abierto de Invierno 2025 β€” San Miguel, Bs As, Argentina | Chess Tournament Results | ChessStats