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Izidoro, Klaus

🇵🇹

FIDEFIDE 1978675· Male· Portugal· Born in 2014

Follow Klaus IzidoroTrack his monthly FIDE ratings, games, tournaments and more.

Klaus Izidoro, a 12-year-old Portuguese player, is rated 1664 — his current career high. He is progressing steadily with +72 Elo over the past 12 months. 28 rated games in the past year (≈13/year long-term). Recent standard appearances include CN 2. divisao 2025-26 r. 7-8, CN Jovens 2025-26 - U12, and CD Leiria Jovens 2025-26 - U12. Also played 6 rapid (including CN Semirrapidas Equipas 2025-26) and 2 blitz events (including CN Jovens Rapidas 2025-26 - U12) recently.

At junior level, he reached #3 and #2 nationally in U12 and U10.

Current rating

1664

Standard

Rpd1673·Blz1711

All-time high

1664

at best
Jun 2026 · age 12

Activity

14

games / yr avg. · ≈1/mo

27 past 12 mo · ≈2/mo
classical only
Moderately active

Signature stat

#122,926

#122,926 · players worldwide · of 218,279

Career timeline

11 entries
2026
Best 12-month gain (+72 Elo)
1592 → 1664
Jun 2026
All-time peak 1664
at age 12
Jun 2026
Re-crossed 1600
at age 12
Jan 2026
2025
Re-crossed 1600
at age 11
Aug 2025
Re-crossed 1600
at age 11
May 2025
3rd Portuguese U12 player
at age 11 · rated 1621
Jan 2025

Standard rating history

Peak
FIDE title
Threshold
First rated

Activity & highlights

Best result
XVI Open Marques de Pombal
perf 1896 (+276) · 3.5/5 · #39
Top opponent
vs Francisco Salgueiro 1,879
CN 2. divisao 2025-26 r. 7-8 · Apr 2026 · +11.3 Elo
Evolution
+72
1592 → 1664
Tournaments
10
38 games
Score
21/ 3855.3%
19W4D15L
Top 3 wins
1.[W]vsDiogo Cirino Medeiros1,758·Taca de Portugal r. 1·R1·+27.6
2.[W]vsBernardo Vidigal1,724·XVI Open Marques de Pombal·R7·+25.8
3.[W]vsDiana Kotova1,613·XVI Open Marques de Pombal·R6·+19.6

Last 12 months — tournaments

10 events
EventDateScoreRankPerfΔ Elo
CN 2. divisao 2025-26 r. 9
Team
May 20261/1#322282+10.8
Open Internacional Queima das Fitas 2026
Open Swiss
Apr 20261.5/5#1391628-2.8
CN 2. divisao 2025-26 r. 7-8
Team
Apr 20260.5/2#1061661+2.8
CN Jovens 2025-26 - U12
Swiss
Mar 20265/4#72366+30.0
CD Leiria Jovens 2025-26 - U12
Swiss
Mar 20263.5/1#32517+5.6
CN 2. divisao 2025-26 r. 1-2
Team
Jan 20260/1#1611313-3.2
XVI Open Marques de Pombal
Open Swiss
Dec 20253.5/5#391896+26.0
Taca de Portugal r. 1
Knockout
Dec 20251/1R322558+29.6
VI Torneio Int Caldas da Rainha
Open Swiss
Oct 20252/3#521856-42.0
I Torneio Foz do Arelho
Swiss
Jul 20253/4#91881+14.4
Worst Elo result: VI Torneio Int Caldas da Rainha (-42.0 Elo, finished #52).

Most-Played Opponents

vsAfonso Bernardes
🇵🇹POR·1720
+3 −0 =2
5 games·last met May 2026
View head-to-head →
vsBernardo Beijoco
🇵🇹POR·1898
+1 −4 =0
5 games·last met May 2026
View head-to-head →
vsAdam Cichecki
🇵🇱POL·1968
+1 −4 =0
5 games·last met May 2026
View head-to-head →
vsAndrii Voronkov
🇵🇹POR·1661
+3 −0 =2
5 games·last met May 2026
View head-to-head →
vsTiago Frutuoso
🇵🇹POR·1975
+0 −5 =0
5 games·last met May 2025
View head-to-head →

Rankings

/
Portugal
#693
out of 1,733 players
Europe
#84,933
in continent
World
#122,920
out of 400,000+

National ranking

Europe & World

Europe
World
Portugal
1
🇵🇹Ferreira, Jorge ViterboFollow Jorge Viterbo FerreiraTrack their monthly FIDE ratings, games, tournaments and more.
2,525
2
🇵🇹Sousa, Andre VenturaFollow Andre Ventura SousaTrack their monthly FIDE ratings, games, tournaments and more.
2,448
3
🇵🇹Pereira, RubenFollow Ruben PereiraTrack their monthly FIDE ratings, games, tournaments and more.
2,447
4
🇵🇹Martins, David Pires TavaresFollow David Pires Tavares MartinsTrack their monthly FIDE ratings, games, tournaments and more.
2,436
5
🇵🇹Veiga, Jose Francisco R P NevesFollow Jose Francisco R P Neves VeigaTrack their monthly FIDE ratings, games, tournaments and more.
2,417
6
🇵🇹Damaso, RuiFollow Rui DamasoTrack their monthly FIDE ratings, games, tournaments and more.
2,415
7
🇵🇹Martins, Bruno Andre LeiteFollow Bruno Andre Leite MartinsTrack their monthly FIDE ratings, games, tournaments and more.
2,408
8
🇵🇹Galego, LuisFollow Luis GalegoTrack their monthly FIDE ratings, games, tournaments and more.
2,400
9
🇵🇹Barria, JoseFollow Jose BarriaTrack their monthly FIDE ratings, games, tournaments and more.
2,374
10
🇵🇹Silva, Pedro Gil Ferreira DaFollow Pedro Gil Ferreira Da SilvaTrack their monthly FIDE ratings, games, tournaments and more.
2,364
...
693🇵🇹Izidoro, Klaus1,664
Europe
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,841
2
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,767
3
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,764
4
🇫🇷Firouzja, AlirezaFollow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more.
2,744
5
🇵🇱Duda, Jan-KrzysztofFollow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more.
2,739
6
🇭🇺Rapport, RichardFollow Richard RapportTrack their monthly FIDE ratings, games, tournaments and more.
2,729
7
🇳🇱Van Foreest, JordenFollow Jorden Van ForeestTrack their monthly FIDE ratings, games, tournaments and more.
2,728
8
🇫🇷Vachier-Lagrave, MaximeFollow Maxime Vachier-LagraveTrack their monthly FIDE ratings, games, tournaments and more.
2,721
9
🇦🇿Mamedyarov, ShakhriyarFollow Shakhriyar MamedyarovTrack their monthly FIDE ratings, games, tournaments and more.
2,717
10
🇹🇷Erdogmus, Yagiz KaanFollow Yagiz Kaan ErdogmusTrack their monthly FIDE ratings, games, tournaments and more.
2,713
...
84933🇵🇹Izidoro, Klaus1,664
World
1
🇳🇴Carlsen, MagnusFollow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more.
2,841
2
🇺🇸Nakamura, HikaruFollow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more.
2,792
2
🇺🇸Caruana, FabianoFollow Fabiano CaruanaTrack their monthly FIDE ratings, games, tournaments and more.
2,792
4
🇺🇿Abdusattorov, NodirbekFollow Nodirbek AbdusattorovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
4
🇺🇿Sindarov, JavokhirFollow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more.
2,777
6
🇩🇪Keymer, VincentFollow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more.
2,767
7
🇳🇱Giri, AnishFollow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more.
2,764
8
🇮🇳Erigaisi ArjunFollow Erigaisi ArjunTrack their monthly FIDE ratings, games, tournaments and more.
2,761
9
🇺🇸So, WesleyFollow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more.
2,753
9
🇨🇳Wei, YiFollow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more.
2,753
...
122920🇵🇹Izidoro, Klaus1,664