CChessStats

National Championship Aruba 2025

Round-RobinStandard

10 players participated in this 9-round tournament, held from 07 Nov 2025 to 16 Nov 2025 in Oranjestad, Aruba. 3 titled players. Top 10 Elo average was 1765, and top seed was Ilya Stetsenko (🇦🇼 ARU, CM, 1946).

Jose Pesqueira (🇦🇼 ARU, CM, 1827) won with 7.0/9, ahead of Ilya Stetsenko (6.5) and Patrick J. de Roo (5.0). Pesqueira broke clear in the final round.

The biggest upset came in round 5: Patrick J. de Roo (1507) beat Hubert Randolf Tromp (1747), a +240-point gap.

Location
🇦🇼Oranjestad, Aruba
Dates
07 Nov 2025 → 16 Nov 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Round-robin · 9 rounds
Top seed
🇦🇼CMIlya Stetsenko1946
Avg top 10
1,765
Participants
10
Titled players · 3
CM×3
Federations · 1 represented
🇦🇼Aruba×10
Top 3
  • 🥇
    🇦🇼ARU·1827
    7.0pts·1978perf+34.2
  • 🥈
    🇦🇼ARU·1946
    6.5pts·1915perf-4.4
  • 🥉
    🇦🇼ARU·1507
    5.0pts·1832perf+140.4

How it unfolded

Top 10 · 9 rounds

CM Jose Pesqueira led from R6 onwards, the runner-up race stayed tight. Title race converged from 2 co-leaders at R4 to 1 by R6.

Co-leaders
3
3
2
2
2
1
2
2
1
#1#2#5#10R1R2R3R4R5R6R7R8R9
R6–R9 · LEAD HELD

CM Jose Pesqueira held the sole lead from R6 through R9 without losing it.

R5 · HEAD-TO-HEAD · WINNER VS 2ND

CM Jose Pesqueira drew with CM Ilya Stetsenko (Black).

R2–R4 · WIN STREAK

CM Jose Pesqueira won 3 in a row (R2–R4).

Cross-table

#PlayerElo12345678910PtsSBBhΔ EloPerf
1🇦🇼CMPesqueira, Jose1827*½½11½111½7.026.0034.0+34.21978
2🇦🇼CMStetsenko, Ilya1946½*½½½½11116.522.0034.5-4.41915
3🇦🇼de Roo, Patrick J.1507½½*½00½1115.016.5036.0+140.41832
5🇦🇼Chaudron, Frederik Theodoor17750½½*01½11—4.516.7536.5+8.41808
4🇦🇼Dirks, Ayden17640½11*½00½14.516.2536.5+0.81765
6🇦🇼Franken, Angelo1806½½10½*01½—4.018.0037.0-8.61762
7🇦🇼CMCroes, Octavio184500½½11*10—4.016.2537.0-17.61757
8🇦🇼Vergara Rivera, Juan Sebastiaan17240000100*113.07.0038.0-38.41644
9🇦🇼Viafara, Hernan17050000½½10*—2.08.2539.0-25.01581
10🇦🇼Tromp, Hubert Randolf1747½00—0——0—*0.53.5040.5-38.81387

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets
National Championship Aruba 2025 — Oranjestad, Aruba | Chess Tournament Results | ChessStats