Format
KC
Koustav Chatterjee
GM🇮🇳FIDE 25073060· Male· India· Born in 2003
Follow Koustav ChatterjeeTrack his monthly FIDE ratings, games, tournaments and more.
Koustav Chatterjee, a 23-year-old Indian Grandmaster, is rated 2484 and sitting in the top 1% of Indian players, and in the top 1% worldwide. He has held steady between 2450 and 2500 for 16 months. 46 rated games in the past year (≈76/year long-term). Recent standard appearances include 2026 NY Marshall Winter Invitational - Six Day GM B, 2026 Pan-American Intercollegiate Championship, and 35th Annual North American Open. Also played 1 blitz event (including TCR: Super Blitz 2025) recently. His peak of 2548 was reached at age 20 (May 2023, World #382 at the time).
Awarded GM in 2023 (age 20) and IM in 2019 (age 16). At junior level, he reached World #13 in U20, World #32 in U18, World #18 in U16, World #24 in U14, World #59 in U12, World #45 in U10 and World #15 in U8.
Current rating
2484
Standard
Rpd2396·Blz2435
All-time high
2548
−64 pts below
May 2023 · age 20
May 2023 · age 20
Activity
55
games / yr avg. · ≈5/mo
46 past 12 mo · ≈4/mo
classical only
Active
classical only
Active
Signature stat
Top 1%
#56 · Indian players · of 19,102
Career timeline
24 entries2023
1,000 career games
at age 20
Oct 2023
GM title awardedGM
at age 20 · 2023 2nd FIDE Council
Aug 2023
13th U20 player worldwide
at age 20 · rated 2546
Jul 2023
Peak World rank: #382
at age 20 · rated 2548
May 2023
Peak Indian rank: #27
at age 20 · rated 2548
May 2023
All-time peak 2548
at age 20 · −64 from today
May 2023
Standard rating history
Activity & highlights
Evolution
-4
2488 → 2484
Tournaments
6
46 games
Score
29/ 4663.0%
17W24D5L
Top 3 wins
Top 3 losses
Last 12 months — tournaments
6 events| Event | Date | Score | Rank | Perf | Δ Elo |
|---|---|---|---|---|---|
Round-Robin | Jan 2026 | 5/9 | #6 | 2413 | -8.6 |
Open Swiss | Jan 2026 | 4.5/6 | #13 | 2343 | -2.4 |
Open Swiss | Dec 2025 | 6.5/9 | #2 | 2531 | +7.5 |
Open Swiss | Nov 2025 | 6/9 | #39 | 2572 | +13.3 |
Team | Oct 2025 | 1.5/4 | #17 | 2314 | -9.3 |
Open Swiss | Oct 2025 | 5.5/9 | #8 | 2448 | -3.5 |
Most-Played Opponents
vsAronyak GhoshIM
🇮🇳IND·2541
+1 −0 =13
14 games·last met Dec 2022
View head-to-head →
vsGuha MitrabhaGM
🇮🇳IND·2516
+2 −5 =6
13 games·last met Dec 2022
View head-to-head →
vsKundu KaustuvIM
🇮🇳IND·2335
+3 −4 =6
13 games·last met Mar 2021
View head-to-head →
vsNeelash SahaIM
🇮🇳IND·2461
+4 −2 =5
11 games·last met Jul 2022
View head-to-head →
vsDas Arpan
🇮🇳IND·2022
+7 −2 =2
11 games·last met Mar 2019
View head-to-head →
Rankings
/
India
#56
out of 26,549 players
Asia-Pacific
#174
in continent
World
#710
out of 400,000+
National ranking
Europe & World
Europe
World
India
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| 56 | 2,484 | |
Asia-Pacific
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| 4 | 🇮🇳Follow Erigaisi ArjunTrack their monthly FIDE ratings, games, tournaments and more. | 2,751 |
| 5 | 🇮🇳Follow Viswanathan AnandTrack their monthly FIDE ratings, games, tournaments and more. | 2,739 |
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| 7 | 🇮🇳Follow Praggnanandhaa RTrack their monthly FIDE ratings, games, tournaments and more. | 2,733 |
| 8 | 🇮🇳Follow Gukesh DTrack their monthly FIDE ratings, games, tournaments and more. | 2,732 |
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| 174 | 2,484 | |
World
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| 710 | 2,484 | |