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Oscar Mario Rojas Alvarez

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CRC · 19 yrs · K=40 · Peak 1691 (Dec 2025)

Best performance: 1656 at ➡️ Torneo IV División AGUA 2026 ⏰ | 17 y 18 de Oct 2026(Best of 2026)

World #=119355 live, down 1777#117,578 publishedCosta Rica #=170Americas #=14518among active players

Classical rating

1683

FIDE’s November 2026 list. No rated games since, so the live rating is the same.

On FIDE’s list since Nov 2025

How live ratings are calculated

Rating History · Classical

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Classical rating 1689 to 1683 over the last 12 months; peak 1691 in December 2025.

Official rating by month

Each month: the rating, its change from the list before, and the rated games FIDE counted.

ListClassicalRapid
Nov 20261683, -8, 5 games1462, 0, 0 games
Oct 20261691, 0, 0 games1462, 0, 0 games
Sep 20261691, 0, 0 games1462, 0, 0 games
Aug 20261691, 0, 0 games1462, 0, 0 games
Jul 20261691, 0, 0 games1462, 0, 0 games
Jun 20261691, 0, 0 games1462, 0, 0 games
May 20261691, 0, 0 games1462, 0, 0 games
Apr 20261691, +4, 0 games1462, 0, 0 games
Mar 20261687, -1, 0 games1462, 0, 0 games
Feb 20261688, -3, 0 games1462, 0, 0 games
Jan 20261691, 0, 0 games1462, 0, 0 games
Dec 20251691, +2, 0 games1462, 0, 0 games

Form · Classical

oldest → latest

Longest unbeaten run in 2026: 5 games, Oct 17 – Oct 18.

From 17 classical games on record, the latest on Oct 18.

Classical games since the November list

No rated classical games this rating periodsince the NOV26 list (Nov 1, 2026)

Last playedScore
Torneo IV División AGUA 2026 | 17 y 18 de Oct 2026Oct 17 – Oct 18TPR 16565½/7

The live rating moves only when new rated games are played. Until then it matches the published rating.

Best wins · Classical

From 12 rated classical games against rated opponents, 2024–2026

#OpponentRating
1, Carlo Cesar Ugalde Chaves, Sep 2025 · Juegos Deportivos Nacionales Eliminatorias 2025 U20 Individual Absoluto, 1684
2, Derec Roberto Herrera Granados, Sep 2025 · Juegos Deportivos Nacionales Eliminatorias 2025 U20 Individual Absoluto, 1582
3, Christopher Conejo Mesen, Oct 2026 · Torneo IV División AGUA 2026 | 17 y 18 de Oct 2026, 1561

Event timeline · Classical

4 events

Events before the current rating period show the performance, not a rating change.

Live events show the rating change; earlier events show the performance rating.

Performance rating by year

YearGamesScoreAvg oppTPR
202653½15071656
202563½15931650
2024101534—

Games count in the month they were played. Each month and year is one performance rating over all of its rated games.

Rated near Oscar Mario Rojas Alvarez · Classical

World

  1. #=119355Louis Lagniez1683.0
  2. #=119355Jerome Claverie1683.0
  3. #=119355Oscar Mario Rojas Alvarez1683.0
  4. #=119355Niccolo Gentili1683.0
  5. #=119355Alvaro Jose Leon Aguilar1683.0

Costa Rica

  1. #169Jhoel Herrera Carmona1684.0
  2. #=170Victoria Sandi Barrantes1683.0
  3. #=170Oscar Mario Rojas Alvarez1683.0
  4. #172Mathias Fernandez Jimenez1680.2
  5. #=173Johan Josue Soza Aleman1680.0

Live rating: FIDE’s November list plus every rated game played since. Not affiliated with FIDE.