CChessStats

Clasificatorio al Sudamericano 2025, Sub-18 Absoluto

Open SwissStandard

14 players participated in this 7-round tournament, held from 19 Sept 2025 to 21 Sept 2025 in Tarija, Bolivia. Top 10 Elo average was 1638, and top seed was Rafael Villca Pereira (🇧🇴 BOL, 1852).

Kevin Josue Ala Ortiz (🇧🇴 BOL, 1817) won with 6.5/7, ahead of Rafael Villca Pereira (5.5) and Luis Hamilton Zambrana Espinoza (4.5). Ala Ortiz won solo starting round 4.

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
Avg top 10
1,638
Participants
14
Federations · 1 represented
🇧🇴Bolivia×13
Top 3

How it unfolded

Top 6 · 7 rounds

Kevin Josue Ala Ortiz led from R4; +1.0-point edge over the runner-up.

Co-leaders
6
3
2
1
1
1
1
23.55.57R1R2R3R4R5R6R7
R4–R7 · LEAD HELD

Kevin Josue Ala Ortiz never relinquished the lead after R4; final gap +1.0 over the runner-up.

R3 · HEAD-TO-HEAD · WINNER VS 2ND

Kevin Josue Ala Ortiz beat Rafael Villca Pereira (Black).

WIN STREAKS · 2 top finishers

Kevin Josue Ala Ortiz 5 wins (R1–R5)Rafael Villca Pereira 3 wins (R4–R6)

Key matchups · top 4

Head-to-head between the four finishers

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Ala Ortiz, Kevin Josue1817BOL+14N+13B+2N+4B+5N=3B+6N6.521.021.018.752053+49.6
2Villca Pereira, Rafael1852BOL+10B+6N1B+3N+4B+7N=5B5.525.528.019.751866+5.2
3Zambrana Espinoza, Luis Hamilton1600BOL+9N4B+13N2B+10N=1N+8B4.524.524.511.751682+20.0
4Rueda Aguirre, Sander Jefferson1661BOL+8B+3N+11B1N2N+5B7B4.026.529.013.501696+14.4
5Benitez Ramos, Yhossue Gabriel1627BOL11B+8N+10B+6N1B4N=2N3.525.027.511.751653+8.8
6Arce Arduz, Luis Fernando1639BOL+12N2B+7N5B+9N=8B1B3.525.027.010.001587-19.6
7Rodriguez Ramos, Mateo1567BOLF=11N6B+14N+13B2B+4N3.515.515.55.251643+18.8
8Bracamonte, Leonel1533BOL4N5B+9B=10N+11B=6N3N3.021.023.58.501475-18.4
9Guzman Luna, Shuren Erlin0BOL3B+14B8N+11N6B+13N10B3.016.016.02.5014390.0
10Apaza Romero, Matias Eduviel1546BOL2N+12B5N=8B3BF+9N2.521.521.56.501467-23.2
11Almanza Mamani, Yeshua Gerardo0BOL+5N=7B4N9B8N+12BF2.519.019.07.251570+12.4
12Castro Tejerina, Uziel Jeremias1466BOL6B10NFF+14B11N+13B2.08.58.50.001369-19.2
13FIDE 33712390F1N3BF7N9B12N0.021.521.50.008130.0
14Ortega Benitez, Dominic1536BOL1B9NF7B12NFF0.020.020.00.00817-48.8

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers