Format
OS
Ostajmer, Sonja
🇭🇷FIDE 79343465· Female· Croatia· Born in 2016
Follow Sonja OstajmerTrack her monthly FIDE ratings, games, tournaments and more.
Sonja Ostajmer, a 10-year-old Croatian player. She plays occasionally (5 games in the last 12 months). Recent standard appearances include S: Prvomajski sahovski turnir- Open U1800, S: Pojedinacno kadetsko prvenstvo Hrvatske za 2026. - kadetkinje do 11 godina, and S: 1. Kadetska liga SZZ Centar 2026 - kadetkinje 3-6. Also played 1 rapid (including R: POJEDINACNO PRVENSTVO GRADA ZAGREBA ZA KADETKINJE U11) and 2 blitz events (including B: Brzopotezni sahovski turnir Dama i Kralj - Dogma Nekretnine) recently. Her peak of 1430 was reached at age 10 (May 2026).
At junior level, she reached #24 nationally in U10.
Current rating
—
unranked
Rpd1406·Blz1400
All-time high
1430
−1430 pts below
May 2026 · age 10
May 2026 · age 10
Activity
30
games / yr avg. · ≈3/mo
5 past 12 mo
classical only
Active
classical only
Active
Signature stat
—
Career timeline
5 entries2026
24th Croatian U10 player
at age 10 · rated 1430
May 2026
Crossed 1400
at age 10
May 2026
Crossed 1200
at age 10
May 2026
All-time peak 1430
at age 10
May 2026
First FIDE rating
1430 · at age 10
May 2026
Standard rating history
Peak
FIDE title
Threshold
First rated
Activity & highlights
Top opponent
S: Pojedinacno kadetsko prvenstvo Hrvatske za 2026. - kadetkinje do 11 godina · Mar 2026 · +26.8 Elo
Evolution
—
Tournaments
3
19 games
Score
1.5/ 197.9%
1W1D17L
Top 1 win
Top 3 losses
Last 12 months — tournaments
3 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | May 2026 | 0/5 | #43 | 805 | -55.6 |
Swiss | Mar 2026 | 1/5 | #9 | 1263 | 0.0 |
Team | Mar 2026 | 0.5/1 | #22 | 688 | 0.0 |
Rankings
/
Croatia
—
out of 2,918 players
Europe
—
in continent
World
—
out of 400,000+
National ranking
Europe & World
Europe
World
Croatia
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Europe
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World
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