Format
ZF
Zhou Fernandez, Isabella
🇨🇷FIDE 6565395· Female· Costa Rica· Born in 2012
Follow Isabella Zhou FernandezTrack her monthly FIDE ratings, games, tournaments and more.
Isabella Zhou Fernandez, a 14-year-old player. She has fluctuated between 1402 and 1523 over the past 2 years. 29 rated games in the past year (≈31/year long-term). Recent standard appearances include Clasificatorio de Divisiones ADEA cuarta division 2026, Campeonato Centroamericano y del Caribe U20 Femenino 2026, and Campeonato Nacional Categoria U20 femenino 2026. Also played 5 rapid (including III Torneo por la Plata 2025) and 6 blitz events (including XLVI Metropolitano Torneo Internacional 2025 Blitz) recently. Her peak of 1523 was reached at age 14 (Mar 2026).
At junior level, she reached #38 nationally in U14.
Current rating
—
unranked
Rpd1452·Blz—
All-time high
1523
−1523 pts below
Mar 2026 · age 14
Mar 2026 · age 14
Activity
37
games / yr avg. · ≈3/mo
29 past 12 mo · ≈2/mo
classical only
Active
classical only
Active
Signature stat
—
Career timeline
7 entries2026
38th U14 player nationally
at age 14 · rated 1523
Mar 2026
Best 12-month gain (+94 Elo)
1429 → 1523
Mar 2026
Crossed 1500
at age 14
Mar 2026
All-time peak 1523
at age 14 · −121 from today
Mar 2026
2025
Crossed 1400
at age 13
May 2025
Crossed 1200
at age 13
May 2025
Standard rating history
Peak
FIDE title
Threshold
First rated
Activity & highlights
Top opponent
Evolution
—
Tournaments
10
74 games
Score
27/ 7436.5%
25W7D42L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
9 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | May 2026 | 4.5/2 | #30 | 2323 | -9.2 |
Open Swiss | Mar 2026 | 2/8 | #20 | 1537 | -54.4 |
Open Swiss | Mar 2026 | 1/5 | #10 | 1306 | -51.2 |
Open Swiss | Feb 2026 | 2/3 | #25 | 684 | 0.0 |
Round-Robin | Jan 2026 | 4.5/4 | #2 | 1579 | 0.0 |
Open Swiss | Dec 2025 | 1.5/8 | #124 | 1238 | 0.0 |
Open Swiss | Dec 2025 | 0.5/4 | #42 | 715 | 0.0 |
Swiss | Oct 2025 | 2/3 | #81 | 1603 | -57.2 |
Open Swiss | Aug 2025 | 5/2 | #13 | 2318 | -38.0 |
Rankings
/
Costa Rica
—
out of 682 players
Americas
—
in continent
World
—
out of 400,000+
National ranking
Europe & World
Europe
World
Costa Rica
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| 10 | 🇨🇷Follow Sebastian Angulo PerezTrack their monthly FIDE ratings, games, tournaments and more. | 2,182 |
Americas
| 1 | 🇺🇸Follow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
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| 5 | 🇺🇸Follow Leinier Dominguez PerezTrack their monthly FIDE ratings, games, tournaments and more. | 2,732 |
| 6 | 🇺🇸Follow Levon AronianTrack their monthly FIDE ratings, games, tournaments and more. | 2,724 |
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World
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| 2 | 🇺🇸Follow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
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| 9 | 🇺🇸Follow Wesley SoTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |
| 9 | 🇨🇳Follow Yi WeiTrack their monthly FIDE ratings, games, tournaments and more. | 2,753 |