CChessStats

Aruba Chess Challenge 2025 U-18

Open SwissStandard

29 players participated in this 7-round tournament, held from 09 Oct 2025 to 12 Oct 2025 in Oranjestad, Aruba. 3 federations represented. Top 10 Elo average was 1581, and top seed was Juan Sebastiaan Vergara Rivera (🇦🇼 ARU, 1757).

Vashist Gajadien (🇸🇷 SUR, 1515) won with 6.0/7, ahead of Sylvi Cabral (5.5) and Mohit Sharma (5.0). Gajadien broke clear in the final round.

The biggest upset came in round 5: Vashist Gajadien (1515) beat Juan Sebastiaan Vergara Rivera (1757), a +242-point gap.

Location
🇦🇼Oranjestad, Aruba
Dates
09 Oct 2025 → 12 Oct 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Swiss · 7 rounds
Top seed
Avg top 10
1,581
Participants
29
Federations · 3 represented
🇦🇼Aruba×15
Netherlands Antilles×4
🇸🇷Suriname×2
Top 3

How it unfolded

Top 6 · 7 rounds

Vashist Gajadien led from R7; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R7.

Co-leaders
14
3
2
2
2
2
1
23.55.57R1R2R3R4R5R6R7
R7–R7 · LEAD HELD

Vashist Gajadien held the sole lead from R7 through R7 without losing it.

R6 · HEAD-TO-HEAD · WINNER VS 2ND

Vashist Gajadien drew with Sylvi Cabral (Black).

WIN STREAKS · 2 top finishers

Vashist Gajadien 3 wins (R1–R3)Sylvi Cabral 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Vashist Gajadien*
½
2Sylvi Cabral
½
*
3Amir Ayubi*
4Mohit Sharma*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Gajadien, Vashist1515SUR+26N+16B+8B=22N+10B=2N+9B6.023.525.521.501854+84.8
2Cabral, Sylvi1490ARU+18B+17N+9B=10N+22B=1B=8N5.524.026.519.501769+73.2
3Sharma, Mohit1571ARU+27N=6B12N+19B+13N+5B=10B5.024.026.017.751427-15.2
4Ayubi, Amir1621AHO+7N+20B22B+25N+11B9N+17B5.021.023.016.501412-33.6
5Ridderstaat, Janoah L J0ARU+?B=11N+14B=8N=23B3N+19B4.522.522.512.2515520.0
6Paez Marin, Miguel E.0ARU+?B=3N11B+?N8B+?N+23B4.515.515.55.0015520.0
7Gopal Jaden0SUR4B+?N=?B17N+29N+24B+22N4.514.014.06.0015240.0
8Wu, Jie-Peng1713AHOF+13B1N=5B+6N+12B=2B4.028.528.517.501496-32.8
9Burgers, Cle Antonius1612ARUF+19B2N+24B+15N+4B1N4.026.026.014.501418-31.6
10Vergara Rivera, Juan Sebastiaan1757ARUF+14B+23N=2B1N+22B=3N4.025.525.514.251635-32.8
11de Roo, Patrick J.1498ARUF=5B+6N=12B4N+23N+25B4.022.522.513.251544+7.6
12Karamchandani, Piyush1482ARU+24NF+3B=11N=17B8N+16B4.022.022.014.501594+17.2
13Cen, Rui Zhen Winson0ARU+?B8N=17B+?N3B=16N+18B4.018.518.56.2514530.0
14Lockhart, Brooke1453ARU+28B10N5N+29B+18B25N+26B4.017.018.07.50957-5.6
15Rafini, Sophie-Belle0ARU+21B22N+27B+?N9B17N+24B4.017.017.07.507570.0
16Purushotamdas, Aryan0ARU+?B1N+20N23B+19N=13B12N3.522.522.58.007090.0
17Fernandez Ojeda, Adrian Gabriel0ARUF2B=13N+7B=12N+15B4N3.027.027.012.5012580.0
18FIDE 2856789702N?N+21B+?B14N+20B13N3.019.519.56.006720.0
19FIDE 159020720+?B9N+29B3N16B+?N5N3.018.018.01.007920.0
20FIDE 159021020+29B4N16B28N+?B18N+?B3.014.014.01.0015360.0
21FIDE 15902110015N24B18N=26B+27N=?N+?B3.013.513.53.0014500.0
22Pourier, Dianthely1502AHOF+15B+4N=1B2N10N7B2.529.029.012.001509-1.2
23Koolman, Colin Kyle Deniel1528ARU+25BF10B+16N=5N11B6N2.522.522.57.75828-30.0
24Motwani, Grayce0ARU12B+21N+?B9N=?B7N15N2.519.519.53.007470.0
25FIDE 15901998023NFF4B+28N+14B11N2.017.017.05.5013320.0
26FIDE 1590160201B?N=?B=21NF+28B14N2.014.514.53.006730.0
27FIDE 1590190403B29N15N=?B21B+?N=28N2.014.514.50.757710.0
28FIDE 15902080014N?NF+20B25B26N=27B1.513.013.04.006530.0
29Rico, Zayra0AHO20N+27B19N14N7BF?B1.016.516.52.006520.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets