Format
KI
Konstantellos, Ioannis Iason
🇬🇷FIDE 42143810· Male· Greece· Born in 2012
Follow Ioannis Iason KonstantellosTrack his monthly FIDE ratings, games, tournaments and more.
Ioannis Iason Konstantellos, a 14-year-old Greek player, is rated 1658 — just 16 short of his peak of 1674 (Sep 2025, age 13). He has fluctuated between 1576 and 1674 over the past 2 years. 16 rated games in the past year (≈10/year long-term). Recent standard appearances include Spring U1800 tournament EAP May 2026, Spring tournament EAP May 2026, and Standard Youth U18 EAP Jan 2026 A. Also played 2 rapid (including 2nd spring rapid EAP 2026) and 1 blitz events (including 2026 New Year Blitz EAP) recently. He took a 14-month break between Jan 2023 and Apr 2024.
At junior level, he reached #37, #86 and #43 nationally in U14, U12 and U10.
Current rating
1658
Standard
Rpd1640·Blz1551
All-time high
1674
−16 pts below
Sep 2025 · age 13
Sep 2025 · age 13
Activity
10
games / yr avg. · ≈1/mo
16 past 12 mo · ≈1/mo
classical only
Moderately active
classical only
Moderately active
Signature stat
#125,253
#125,253 · players worldwide · of 218,279
Career timeline
12 entries2026
Re-crossed 1600
at age 14
Feb 2026
2025
All-time peak 1674
at age 13 · −16 from today
Sep 2025
37th Greek U14 player
at age 13 · rated 1671
Feb 2025
Best 12-month gain (+669 Elo)
1002 → 1671
Feb 2025
Crossed 1600
at age 13
Feb 2025
Crossed 1500
at age 13
Feb 2025
Standard rating history
Peak
FIDE title
Threshold
First rated
Inactive period
FIDE recal.
Activity & highlights
Evolution
-13
1671 → 1658
Tournaments
5
23 games
Score
15/ 2365.2%
14W2D7L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
5 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Swiss | May 2026 | 4/4 | #2 | 2324 | +21.6 |
Swiss | May 2026 | 3/4 | #10 | 1735 | +26.0 |
Swiss | Jan 2026 | 4/4 | #2 | 2358 | +35.6 |
Round-Robin | Dec 2025 | 3.5/2 | #3 | 2270 | -33.6 |
Swiss | Aug 2025 | 0.5/2 | #26 | 1265 | -61.6 |
Most-Played Opponents
vsSotirios Tatsiopoulos
🇬🇷GRE·1481
+4 −6 =0
10 games·last met May 2026
View head-to-head →
vsGeorgios Kolliopoulos
🇬🇷GRE·1703
+5 −2 =1
8 games·last met Mar 2026
View head-to-head →
vsOdysseas Panos Papadopoulos
🇬🇷GRE·1506
+3 −1 =1
5 games·last met Mar 2026
View head-to-head →
vsNikolaos Galionis
🇬🇷GRE·1459
+3 −2 =0
5 games·last met Mar 2026
View head-to-head →
vsAndreas I Spyropoulos
🇬🇷GRE
+1 −3 =1
5 games·last met Jan 2026
View head-to-head →
Rankings
/
Greece
#1,555
out of 3,681 players
Europe
#86,302
in continent
World
#125,247
out of 400,000+
National ranking
Europe & World
Europe
World
Greece
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| 5 | 🇬🇷Follow Hristos BanikasTrack their monthly FIDE ratings, games, tournaments and more. | 2,545 |
| 6 | 🇬🇷Follow Dimitrios MastrovasilisTrack their monthly FIDE ratings, games, tournaments and more. | 2,525 |
| 7 | 🇬🇷Follow Dimitris AlexakisTrack their monthly FIDE ratings, games, tournaments and more. | 2,524 |
| 8 | 🇬🇷Follow Stelios HalkiasTrack their monthly FIDE ratings, games, tournaments and more. | 2,505 |
| 9 | 🇬🇷Follow Evaggelos PatrelakisTrack their monthly FIDE ratings, games, tournaments and more. | 2,483 |
| 9 | 🇬🇷Follow Anatole VlachosTrack their monthly FIDE ratings, games, tournaments and more. | 2,483 |
| ... | ||
| 1555 | 1,658 | |
Europe
| 1 | 🇳🇴Follow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more. | 2,841 |
| 2 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
| 3 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,764 |
| 4 | 🇫🇷Follow Alireza FirouzjaTrack their monthly FIDE ratings, games, tournaments and more. | 2,744 |
| 5 | 🇵🇱Follow Jan-Krzysztof DudaTrack their monthly FIDE ratings, games, tournaments and more. | 2,739 |
| 6 | 🇭🇺Follow Richard RapportTrack their monthly FIDE ratings, games, tournaments and more. | 2,729 |
| 7 | 🇳🇱Follow Jorden Van ForeestTrack their monthly FIDE ratings, games, tournaments and more. | 2,728 |
| 8 | 🇫🇷Follow Maxime Vachier-LagraveTrack their monthly FIDE ratings, games, tournaments and more. | 2,721 |
| 9 | 🇦🇿Follow Shakhriyar MamedyarovTrack their monthly FIDE ratings, games, tournaments and more. | 2,717 |
| 10 | 🇹🇷Follow Yagiz Kaan ErdogmusTrack their monthly FIDE ratings, games, tournaments and more. | 2,713 |
| ... | ||
| 86302 | 1,658 | |
World
| 1 | 🇳🇴Follow Magnus CarlsenTrack their monthly FIDE ratings, games, tournaments and more. | 2,841 |
| 2 | 🇺🇸Follow Hikaru NakamuraTrack their monthly FIDE ratings, games, tournaments and more. | 2,792 |
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| 6 | 🇩🇪Follow Vincent KeymerTrack their monthly FIDE ratings, games, tournaments and more. | 2,767 |
| 7 | 🇳🇱Follow Anish GiriTrack their monthly FIDE ratings, games, tournaments and more. | 2,764 |
| 8 | 🇮🇳Follow Erigaisi ArjunTrack their monthly FIDE ratings, games, tournaments and more. | 2,761 |
| 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 |
| ... | ||
| 125247 | 1,658 | |