CChessStats

Clasificatorio al Sudamericano 2025, Sub-12 Absoluto

Open SwissStandard

15 players participated in this 7-round tournament, held from 19 Sept 2025 to 21 Sept 2025 in Tarija, Bolivia. Top 10 Elo average was 1553, and top seed was Mauro Alejandro Fernandez Rocha (🇧🇴 BOL, 1719).

Mauro Alejandro Fernandez Rocha (🇧🇴 BOL, 1719) won with 5.5/7, ahead of Derek Neythan Jaldin Soriano (5.5) and Diego Emanuel Murga Paz (5.0). Fernandez Rocha shared the lead from round 5, winning on tie-break.

The biggest upset came in round 4: Derek Neythan Jaldin Soriano (1458) beat Javier Santiago Garcia Soliz (1607), a +149-point gap.

Location
🇧🇴Tarija, Bolivia
Dates
19 Sept 2025 → 21 Sept 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 7 rounds
Top seed
🇧🇴Mauro Alejandro Fernandez Rocha1719
Avg top 10
1,553
Participants
15
Federations · 1 represented
🇧🇴Bolivia×13
Top 3

How it unfolded

Top 6 · 7 rounds

Tight race until R7; 2 players tied at 5.5/7, decided on Buchholz.

Co-leaders
5
2
3
1
3
3
2
23.55.57R1R2R3R4R5R6R7
Fernandez Rocha5.5Jaldin Soriano5.5Murga Paz5Ruiz Achacollo4.5Garcia Soliz4.5Joffre Marino3.5— ex-leaders:Choque Yubanureled R4, #8
R7 · TIEBREAK CLUSTER

2 players finish on 5.5/7. Fernandez Rocha takes the title on Buchholz Cut1 (25.5).

R6 · HEAD-TO-HEAD · WINNER VS 2ND

Mauro Alejandro Fernandez Rocha drew with Derek Neythan Jaldin Soriano (Black).

R3–R5 · WIN STREAK

Derek Neythan Jaldin Soriano won 3 in a row (R3–R5).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Mauro Alejandro Fernandez Rocha*
½
½
1
2Derek Neythan Jaldin Soriano
½
*
0
1
3Diego Emanuel Murga Paz
½
1
*
½
4Jose Damir Ruiz Achacollo
0
0
½
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Fernandez Rocha, Mauro Alejandro1719BOL+8B+13N=7B=3N+4B=2N+6B5.525.527.520.501718+0.8
2Jaldin Soriano, Derek Neythan1458BOL+4B−3N+12B+5N+6B=1B+10N5.525.527.519.751732+70.0
3Murga Paz, Diego Emanuel1476BOL=9N+2B+6N=1B+7N=5B=4N5.027.030.021.251738+98.4
4Ruiz Achacollo, Jose Damir1594BOL−2N+11B+8N+13B−1N+7B=3B4.525.027.013.501594+1.6
5Garcia Soliz, Javier Santiago1607BOL+11N=6B=9N−2B+13N=3N+14B4.521.022.010.751511-21.2
6Joffre Marino, Cristhian Adrian1541BOL+14B=5N−3B+10N−2N+9B−1N3.526.027.08.751417-33.6
7Choque Yubanure, Misael Alejandro1573BOL+10B+12N=1N+9B−3B−4N−8B3.524.026.010.251424-40.0
8Cardozo Palacios, Jose Ezequiel1497BOL−1N=10B−4B+12N+15BF+7N3.518.018.06.751503+0.4
9Limachi, Rodrigo1580BOL=3B+15N=5B−7N+11B−6NF3.018.518.56.751461-32.8
10Acapa Cruz, Carlos Fernando0BOL−7N=8N+15B−6BF+11N−2B2.518.018.03.7513640.0
11Colque Condori, Matias Benjamin1487BOL−5B−4NF+14B−9N−10B+12B2.017.517.53.00788-43.6
12Vidaurre Salazar, Alexis0BOLF−7B−2N−8B+14N+13B−11N2.017.517.53.007070.0
13Flores Vargas, Misael Fabricio0BOLF−1B+14N−4N−5B−12N+15B2.017.517.51.008330.0
14FIDE 33712630—−6NF−13B−11N−12B+15N−5N1.014.014.00.007390.0
15FIDE 33605120—F−9B−10NF−8N−14B−13N0.012.012.00.007390.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets