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 (≈72/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
76
games / yr avg. · ≈6/mo
73 past 12 mo · ≈6/mo
classical only
Active
classical only
Active
Signature stat
Top 2%
#60 · Sri Lankan players · of 3,250
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
Activity & highlights
Top opponent
Evolution
-48
1990 → 1942
Tournaments
9
80 games
Score
59/ 8073.8%
49W20D11L
Top 3 wins
1.[W]vsD C B K Senevirathne1,908·Sri Lanka National Premier Division Chess Championship 2025·R4·+20.0
3.[W]vsSethun Neththaru Manuwaruna1,831·Sri Lanka National Premier Division Chess Championship 2025·R3·+15.6
Top 3 losses
2.[L]vsA A Kavishka Gimshan Laksiri1,798·MORA Kings International Rating Chess Championship 2025·R5·-26.1
3.[L]vsG K Pasindu Nimsara Dharmakeerthi1,833·Sri Lanka National Premier Division Chess Championship 2025·R10·-24.3
Last 12 months — tournaments
9 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 |
Open Swiss | Jun 2025 | 5.5/10 | #57 | 1883 | -47.2 |
Open Swiss | Jun 2025 | 7.5/9 | #15 | 1977 | -36.0 |
Worst Elo result: Sri Lanka National Premier Division Chess Championship 2025 (-47.2 Elo, finished #57).
Most-Played Opponents
vsA A C B AmarasingheCM
🇱🇰SRI·1962
+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·2162
+0 −5 =3
8 games·last met Aug 2025
View head-to-head →
vsR A Thaweesha Nawanjana
🇱🇰SRI·1702
+6 −1 =0
7 games·last met Feb 2026
View head-to-head →
Rankings
/
Sri Lanka
#60
out of 3,705 players
Asia-Pacific
#4,581
in continent
World
#38,372
out of 400,000+
National ranking
Europe & World
Europe
World
Sri Lanka
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| 60 | 1,942 | |
Asia-Pacific
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| 2 | 🇺🇿Follow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more. | 2,776 |
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| ... | ||
| 4581 | 1,942 | |
World
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| 5 | 🇺🇿Follow Javokhir SindarovTrack their monthly FIDE ratings, games, tournaments and more. | 2,776 |
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| ... | ||
| 38372 | 1,942 | |