Format
AK
Amarathunge, Kosala Sandeepa Chamikara
CM🇱🇰FIDE 29970954· Male· Sri Lanka· Born in 2007
Follow Kosala Sandeepa Chamikara AmarathungeTrack his monthly FIDE ratings, games, tournaments and more.
Kosala Sandeepa Chamikara Amarathunge, a 19-year-old Sri Lankan Candidate Master, is rated 1942 and sitting in the top 2% of Sri Lankan players. He has slipped back 48 Elo over the past 12 months. 73 rated games in the past year (≈71/year long-term). Recent standard appearances include Sri Lanka National Chess Championships 2026 - Premier Division, 2nd Chronicles of Checkmate International Event 2026, and Sri Lanka Major Division Chess Championships 2026 - Western. Also played 1 rapid (including Sri Lanka National Rapid Chess Championship 2025) and 4 blitz events (including 2nd Chronicles of Checkmate International Event 2026 - Blitz) recently. His peak of 2024 was reached at age 17 (Oct 2024, Sri Lankan #10 at the time).
Awarded CM in 2025 (age 18). At junior level, he reached #3, #4, #5 and #23 nationally in U20, U18, U16 and U14.
Current rating
1942
Standard
Rpd1775·Blz1899
All-time high
2024
−82 pts below
Oct 2024 · age 17
Oct 2024 · age 17
Activity
70
games / yr avg. · ≈6/mo
73 past 12 mo · ≈6/mo
classical only
Active
classical only
Active
Signature stat
Top 2%
#62 · Sri Lankan players · of 3,148
Career timeline
13 entries2026
3rd Sri Lankan U20 player
at age 19 · rated 1989
Jan 2026
K-factor lowered to 20
at age 19
Jan 2026
2025
CM title awardedCM
at age 18
Jun 2025
2024
Peak Sri Lankan rank: #10
at age 17 · rated 2024
Oct 2024
4th Sri Lankan U18 player
at age 17 · rated 2024
Oct 2024
Best 12-month gain (+531 Elo)
1493 → 2024
Oct 2024
Standard rating history
Peak
FIDE title
Threshold
First rated
COVID-19
FIDE recal.
Activity & highlights
Top opponent
Evolution
+34
1908 → 1942
Tournaments
7
60 games
Score
46/ 6076.7%
39W14D7L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
7 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Open Swiss | Mar 2026 | 5/9 | #65 | 1890 | -19.8 |
Open Swiss | Feb 2026 | 6.5/6 | #106 | 2415 | -13.4 |
Open Swiss | Feb 2026 | 6.5/9 | #8 | 1875 | -13.0 |
Open Swiss | Nov 2025 | 7/7 | #30 | 2530 | +26.8 |
Open Swiss | Oct 2025 | 5/7 | #28 | 1904 | -6.4 |
Open Swiss | Aug 2025 | 7.5/7 | #10 | 2579 | +41.2 |
Open Swiss | Jul 2025 | 8.5/9 | #2 | 2159 | +18.8 |
Worst Elo result: Sri Lanka National Chess Championships 2026 - Premier Division (-19.8 Elo, finished #65).
Most-Played Opponents
vsA A C B AmarasingheCM
🇱🇰SRI·1986
+5 −3 =2
10 games·last met Oct 2025
View head-to-head →
vsPesandu Rashmitha LiyanageFM
🇱🇰SRI·2126
+0 −8 =1
9 games·last met Oct 2025
View head-to-head →
vsS D B K Senevirathne
🇱🇰SRI·1957
+1 −6 =2
9 games·last met Jul 2024
View head-to-head →
vsS SivathanujanCM
🇱🇰SRI·2148
+0 −5 =3
8 games·last met Aug 2025
View head-to-head →
vsR A Thaweesha Nawanjana
🇱🇰SRI·1689
+6 −1 =0
7 games·last met Feb 2026
View head-to-head →
Rankings
/
Sri Lanka
#62
out of 3,598 players
Asia-Pacific
#4,564
in continent
World
#38,327
out of 400,000+
National ranking
Europe & World
Europe
World
Sri Lanka
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| 62 | 1,942 | |
Asia-Pacific
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World
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| 38327 | 1,942 | |