GMKoustav Chatterjee
IND · FIDE ID 25073060 · 197 tournament games since 2021
Standard
2469
#65 in IND (active)
Rapid
2396
#55 in IND (active)
Blitz
2431
#44 in IND (active)
Score
65%
89 W · 78 D · 30 L
Opp. avg
2307
Last 50 games
Last game
2026-09-07
2026 Labor Day Norm Invitational | GM B
Prep summary
- As White: 1.d4 in 45% of games (scores 60%), otherwise 1.Nf3 (35%).
- Against 1.e4: 1...e5 in 44 of 52 games (King's Pawn Game), scoring 65%.
- Against 1.d4: 1...Nf6 in 37 of 39 games (Indian Defense), scoring 57%.
- Comfort zone: Nimzo-Indian Defense: Normal Variation, Botvinnik System as White, 92% in 6 games.
- By opponent strength: 41% against higher-rated players, 74% against lower-rated.
- Drawish: 40% of games end in a draw.
Based on 197 over-the-board games (74 classical · 8 rapid). 98 with White (66%), 99 with Black (64%).
Openings as White
First move
| 1.d4 | 44 | 60% |
| 1.Nf3 | 34 | 74% |
| 1.e4 | 15 | 73% |
| 1.c4 | 5 | 40% |
Most played
| Opening | Games | Score |
|---|---|---|
| Zukertort Opening | 6 | 83% |
| Nimzo-Indian Defense: Normal Variation, Botvinnik System | 6 | 92% |
| English Opening: Anglo-Indian Defense, King's Knight Variation | 4 | 88% |
| King's Indian Defense: Normal Variation, King's Knight Variation | 4 | 88% |
| Queen's Gambit Declined: Exchange Variation, Positional Variation | 4 | 63% |
Openings as Black
Against 1.e4 (52 games)
| 1...e5 King's Pawn Game | 44 | 65% |
| 1...e6 French Defense | 3 | 50% |
| 1...c5 Sicilian Defense | 3 | 100% |
Against 1.d4 (39 games)
| 1...Nf6 Indian Defense | 37 | 57% |
| 1...e6 Horwitz Defense | 1 | 100% |
| 1...d5 Queen's Pawn Game | 1 | 100% |
Most played
| Opening | Games | Score |
|---|---|---|
| Italian Game: Classical Variation, Giuoco Pianissimo | 9 | 78% |
| Queen's Gambit Declined: Ragozin Defense | 7 | 64% |
| Ruy Lopez: Closed, Anti-Marshall | 6 | 50% |
| Ruy Lopez: Closed | 4 | 75% |
| Queen's Gambit Declined: Exchange Variation, Positional Variation | 4 | 63% |
Recent games
| Date | Opponent and event | Result |
|---|---|---|
| 2026-09-07 | Ethan Sheehan (2386) 2026 Labor Day Norm Invitational | GM B · classical | L |
| 2026-09-07 | Joshua Altman (2248) 2026 Labor Day Norm Invitational | GM B · classical | W |
| 2026-09-06 | Andrew Jiang (2294) 2026 Labor Day Norm Invitational | GM B · classical | ½ |
| 2026-09-05 | Ryan Amburgy (2288) 2026 Labor Day Norm Invitational | GM B · classical | ½ |
| 2026-09-05 | Ivan Schitco (2498) 2026 Labor Day Norm Invitational | GM B · classical | ½ |
| 2026-09-04 | Sam Luger (2320) 2026 Labor Day Norm Invitational | GM B · classical | L |
| 2026-09-04 | Titas Stremavicius (2554) 2026 Labor Day Norm Invitational | GM B · classical | ½ |
| 2026-09-03 | Tianqi Wang (2363) 2026 Labor Day Norm Invitational | GM B · classical | W |
| 2026-08-09 | Arystan Isanzhulov (2385) FIDE World University Team Chess Championship 2026 (Finals) | Playoffs · classical | L |
| 2026-08-09 | Arystan Isanzhulov (2385) FIDE World University Team Chess Championship 2026 (Finals) | Playoffs · classical | L |
Data: FIDE rating list (October 2026 list; national ranks count active players) and tournament games broadcast on Lichess since 2020 (open data, CC0). Results are matched to FIDE players by name or FIDE ID and may be incomplete. This page shows public chess results only. Is this you and you want the page removed? Email chessmoose1@gmail.com and we remove it.