Format
MG
Mostert, Gideon
🇿🇦FIDE 14366002· Male· South Africa· Born in 2008
Follow Gideon MostertTrack his monthly FIDE ratings, games, tournaments and more.
Gideon Mostert, a 18-year-old South African player, is rated 1490. He plays occasionally (7 games in the last 12 months) and took a 16-month break between Sep 2024 and Feb 2026. Recent appearances: Bojanala Closed Chess Championships 2026 (U18) and 2025 Mzansi Inter Provincial Team Championships (U18 Open Championship). His peak of 1544 was reached at age 16 (Jun 2024).
At junior level, he reached #70 nationally in U16.
Current rating
1490
Standard
Rpd—·Blz—
All-time high
1544
−54 pts below
Jun 2024 · age 16
Jun 2024 · age 16
Activity
11
games / yr avg. · ≈1/mo
7 past 12 mo · ≈1/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#189,559
#189,559 · players worldwide · of 218,279
Career timeline
7 entries2024
Inactive for 16 months
paused at 1535 → returned at 1527
Sep 2024
70th South African U16 player
at age 16 · rated 1544
Jun 2024
Crossed 1500
at age 16
Jun 2024
Crossed 1400
at age 16
Jun 2024
Crossed 1200
at age 16
Jun 2024
All-time peak 1544
at age 16 · −54 from today
Jun 2024
Standard rating history
Peak
FIDE title
Threshold
First rated
Inactive period
Activity & highlights
Top opponent
Evolution
-45
1535 → 1490
Tournaments
2
11 games
Score
4.5/ 1140.9%
3W3D5L
Top 2 wins
Top 3 losses
Last 12 months — tournaments
2 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | Feb 2026 | 1.5/4 | #8 | 1549 | -36.8 |
Team | Dec 2025 | 3/3 | #71 | 2421 | -7.6 |
Rankings
/
South Africa
#1,455
out of 1,876 players
Africa
#8,076
in continent
World
#189,487
out of 400,000+
National ranking
Europe & World
Europe
World
South Africa
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| 1455 | 1,490 | |
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| 8076 | 1,490 | |
World
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| ... | ||
| 189487 | 1,490 | |