Format
TZ
Tjong, Zach Alexander
🇮🇩FIDE 365105319· Male· Indonesia· Born in 2017
Follow Zach Alexander TjongTrack his monthly FIDE ratings, games, tournaments and more.
Zach Alexander Tjong, a 9-year-old Indonesian player, is rated 1667 — just 9 short of his peak of 1676 (Feb 2026, age 9). He is on a steady climb with +37 Elo over the past 12 months. 29 rated games in the past year (≈21/year long-term). Recent standard appearances include JAPFA FIDE RATED 2026 - CHALLENGER, PERCASI SCUA FIDE RATED 3 2026, and FIDE WORLD CADET CHESS CHAMPIONSHIP 2025 U8 group. Also played 1 rapid (including 9th Eastern Asia Youth Chess Championships 2025 Rapid-U8) and 1 blitz events (including 9th Eastern Asia Youth Chess Championships 2025 Blitz-U8) recently.
At junior level, he reached World #47 in U8 and #1 nationally in U10.
Current rating
1667
Standard
Rpd1580·Blz1687
All-time high
1676
−9 pts below
Feb 2026 · age 9
Feb 2026 · age 9
Activity
21
games / yr avg. · ≈2/mo
25 past 12 mo · ≈2/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#121,806
#121,806 · players worldwide · of 218,279
Career timeline
8 entries2026
1st Indonesian U10 player
at age 9 · rated 1676
Feb 2026
All-time peak 1676
at age 9 · −9 from today
Feb 2026
2025
47th U8 player worldwide
at age 8 · rated 1615
Feb 2025
Best 12-month gain (+547 Elo)
1068 → 1615
Feb 2025
Crossed 1600
at age 8
Feb 2025
2024
Crossed 1500
at age 7
Nov 2024
Standard rating history
Peak
FIDE title
Threshold
First rated
FIDE recal.
Activity & highlights
Evolution
+37
1630 → 1667
Tournaments
5
40 games
Score
23/ 4057.5%
20W6D14L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
5 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | May 2026 | 2/1 | #223 | 2696 | -8.8 |
Open Swiss | Jan 2026 | 4/7 | #47 | 1967 | +23.6 |
Open Swiss | Sep 2025 | 7.5/9 | #18 | 1792 | +23.6 |
Open Swiss | Aug 2025 | 2/6 | #42 | 1656 | +5.2 |
Open Swiss | Jul 2025 | 7.5/2 | #19 | 2357 | -8.4 |
Rankings
/
Indonesia
#316
out of 477 players
Asia-Pacific
#17,437
in continent
World
#121,800
out of 400,000+
National ranking
Europe & World
Europe
World
Indonesia
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World
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