Kaustuv Kundu - The International Master with a Killer Instinct
Known online as shadow_master99, Kaustuv Kundu proudly wears the title of International Master, earned through sheer tactical brilliance and unwavering dedication. A formidable force on the chessboard, Kaustuv combines strategic depth with a dash of unpredictability, making opponents constantly second-guess their next move.
Career Highlights & Style
Kaustuv reached a peak blitz rating of 2743 back in July 2020 — a level where even grandmasters start to sweat. His bullet rating climbed up to a striking 2647 in April 2025, proving that speed and precision are among his greatest weapons. And let’s not forget his rapid peak of 2512, showcasing his versatility across all time controls.
Playing style? Expect both patience and fire. With an average of over 77 moves per win in his games, he thrives in long, grueling battles, but those who watch closely know he’s got a nearly unstoppable comeback rate of 83% when the chips are down. If a piece is lost, don’t count him out—Kaustuv's win rate after losing a piece is a solid 55%. Resigning early is rare for him, only about 2% of the time; he fights to the bitter end.
The Openings Mystery
His preferred opening in blitz? The enigmatic and humorously named "Top Secret" which yields him a solid 65% win rate over more than 400 games. When he isn't revealing trade secrets, he dabbles in the Reti Opening and the English Opening, showing he’s not just a one-trick magician but a grandmaster of disguise.
Opponent Dynamics
Kaustuv’s rivalry record reads like an epic saga. Some opponents like manmish2, kevingeorgemicheal, and albayo have never tasted victory against him. But like any great chess story, there are nemeses too—players such as manitodeplomo and yurovskykh_oleksandr currently have his number with zero wins against them.
Psychological Edge & Timing
Morning bird? Night owl? Kaustuv shines brightest early in the day, with his best time to play being exactly 6:00 AM — when most of us can barely find our car keys! His tilt factor is modest at 8, meaning he can handle pressure like a champ without throwing pieces around in frustration... most of the time.
Recent Memorable Clash
One of his latest victories was a beautiful blitz game showcasing surgical precision against carokannlover213. In this Reti Opening with Pirc Invitation variation, Kaustuv orchestrated a masterful queen and rook attack leading to a winning position before opponent ran out of time. You can admire the final position here.
In Summary
Kaustuv Kundu's chess journey is that of a relentless fighter armed with a calm mind, deep knowledge, and a flair for dramatic comebacks. Whether blitz, bullet, or rapid, opponents beware: shadow_master99 lurks quietly, ready to pounce with his “Top Secret” moves and tactical surprises.
In the world of 64 squares, Kaustuv is no mere player—he's a dazzling strategist who plays with both heart and humor!
Positives and Strengths
Kaustuv, your recent blitz games demonstrate several strong points that provide a solid foundation for further improvement:
- Opening Preparation: You have a very solid and effective opening repertoire, especially with your English Opening systems where your win rates are excellent. Notably, your performance with the Caro-Kann Defensive System and various Sicilian Defense lines are remarkable with win rates around 88-90%.
- Aggressive Play and Initiative: Your games show a good tendency to seize the initiative early, especially evident in sharp lines like the Sicilian Dragon Yugoslav Attack and related Sicilian variations.
- Endgame Technique: You exhibit good resourcefulness in complex endgame situations, converting your advantages efficiently as seen in your longer games.
- Overall Record: Your extensive winning record (271 wins against 101 losses) shows consistency and resilience in blitz format.
- Recent Progress: Your recent 3- and 6-month rating increases of over 100 points reflect substantial improvement and learning.
Areas for Improvement
To further enhance your play and rating progression, focus on the following areas:
- Time Management: Some wins were secured when opponents ran out of time. Try to balance quick decision-making with accurate calculation to avoid losing on time yourself, as seen in a recent loss on time despite an equal or better position.
- Handling Pressure in Complex Middlegames: Several losses involved sharp, tactical middlegame scenarios where the opponent capitalized on minor inaccuracies or weaknesses. Improving calculation depth and board vision here can help reduce losses.
- Closing Out Drawn or Slightly Losing Positions: Your draws and losses sometimes come from missed opportunities to simplify into a winning endgame or hold a balanced position. Practicing defensive techniques and endgame theory can help.
- Opening Variety and Flexibility: While your core openings are strong, diversifying to handle unusual responses or varying your move order can increase your chances against well-prepared opponents.
- Focus on Mid to Long Blitz Games: Your results indicate strong performance especially in shorter blits; working on stamina and focus for longer blitz games can help maintain your opening advantage through the endgame.
Suggestions for Next Steps
- Review your losses to understand tactical slips in critical moments. Consistent tactical training will sharpen your ability to calculate quickly and accurately under time pressure.
- Use training tools to improve your time management skills, practicing making quality moves within limited time.
- Study endgame patterns relevant to your openings, so you can confidently transition to winning endgames.
- Consider experimenting occasionally with different but related opening lines to keep opponents guessing and deepen your understanding.
- Keep tracking your rating trends and focus on maintaining steady improvement; your recent slope gains indicate an upward trajectory over the past 12 months.
Additional Resources
Continue to analyze your games with a coach or using chess software, concentrating on:
- Understanding key moments in your games where a different plan or move could have helped;
- Learning from strong players who use your main openings;
- Practicing tactics daily even at a blitz pace to boost precision under time constraints.
🆚 Opponent Insights
| Recent Opponents | ||
|---|---|---|
| allexo | 3W / 1L / 0D | |
| Volodymyr Yaniuk | 1W / 0L / 0D | |
| BabyyGroot | 1W / 1L / 0D | |
| Caio Victor Brandts Buys | 1W / 0L / 0D | |
| Daan Brandenburg | 1W / 0L / 0D | |
| ivano12 | 1W / 0L / 0D | |
| Tushar Anand | 1W / 0L / 0D | |
| ghulyan777 | 1W / 1L / 0D | |
| laminaaprod | 0W / 1L / 0D | |
| il89stg-qrs | 1W / 0L / 0D | |
| Most Played Opponents | ||
|---|---|---|
| Never_walk_alone | 10W / 13L / 2D | |
| renzogm | 12W / 10L / 1D | |
| roaring_lion23 | 12W / 5L / 3D | |
| ali shahibzadegan | 10W / 7L / 0D | |
| Daniel Dominguez | 4W / 13L / 0D | |
Rating
| Year | Bullet | Blitz | Rapid | Daily |
|---|---|---|---|---|
| 2025 | 2625 | 2587 | 2059 | |
| 2024 | 2602 | 2485 | 2059 | |
| 2023 | 2613 | 2432 | 2059 | |
| 2022 | 2594 | 2466 | 2059 | |
| 2021 | 2513 | 2557 | 2512 | |
| 2020 | 2225 | 2529 | 1377 |
Stats by Year
| Year | White | Black | Moves |
|---|---|---|---|
| 2025 | 41W / 36L / 2D | 41W / 33L / 7D | 77.1 |
| 2024 | 23W / 8L / 1D | 17W / 11L / 5D | 75.9 |
| 2023 | 3W / 2L / 2D | 7W / 0L / 1D | 72.8 |
| 2022 | 172W / 119L / 20D | 157W / 146L / 22D | 78.2 |
| 2021 | 50W / 16L / 10D | 51W / 20L / 7D | 75.6 |
| 2020 | 60W / 20L / 6D | 60W / 30L / 6D | 68.5 |
Openings: Most Played
| Bullet Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Colle System: Rhamphorhynchus Variation | 82 | 50 | 29 | 3 | 61.0% |
| English Opening: Caro-Kann Defensive System | 24 | 11 | 12 | 1 | 45.8% |
| English Opening: Agincourt Defense | 23 | 9 | 12 | 2 | 39.1% |
| Nimzo-Larsen Attack: Classical Variation | 22 | 14 | 8 | 0 | 63.6% |
| Amazon Attack: Siberian Attack | 21 | 11 | 9 | 1 | 52.4% |
| Hungarian Opening: Wiedenhagen-Beta Gambit | 21 | 13 | 7 | 1 | 61.9% |
| Amar Gambit | 21 | 16 | 4 | 1 | 76.2% |
| Nimzo-Larsen Attack | 19 | 9 | 9 | 1 | 47.4% |
| English Opening: Anglo-Indian Defense | 16 | 8 | 7 | 1 | 50.0% |
| London System: Poisoned Pawn Variation | 15 | 4 | 10 | 1 | 26.7% |
| Blitz Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| English Opening: Agincourt Defense | 22 | 14 | 6 | 2 | 63.6% |
| Sicilian Defense: Closed | 17 | 13 | 1 | 3 | 76.5% |
| English Opening: Caro-Kann Defensive System | 17 | 15 | 0 | 2 | 88.2% |
| English Opening: Anglo-Indian Defense | 15 | 10 | 2 | 3 | 66.7% |
| Unknown | 15 | 8 | 6 | 1 | 53.3% |
| Colle System: Rhamphorhynchus Variation | 10 | 5 | 3 | 2 | 50.0% |
| Sicilian Defense | 10 | 9 | 1 | 0 | 90.0% |
| English Opening: Four Knights System, Nimzowitsch Variation | 10 | 7 | 1 | 2 | 70.0% |
| Sicilian Defense: Alapin Variation, Sherzer Variation | 10 | 9 | 1 | 0 | 90.0% |
| Sicilian Defense: Dragon Variation, Yugoslav Attack | 10 | 8 | 2 | 0 | 80.0% |
| Rapid Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Sicilian Defense: Closed | 3 | 1 | 2 | 0 | 33.3% |
| QGA: 3.e3 c5 | 3 | 1 | 2 | 0 | 33.3% |
| Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line | 3 | 2 | 1 | 0 | 66.7% |
| Amazon Attack: Siberian Attack | 3 | 1 | 1 | 1 | 33.3% |
| Nimzo-Indian Defense | 3 | 1 | 1 | 1 | 33.3% |
| Caro-Kann Defense: Classical Variation | 2 | 2 | 0 | 0 | 100.0% |
| Ruy Lopez: Berlin Defense | 2 | 2 | 0 | 0 | 100.0% |
| Caro-Kann Defense: Exchange Variation | 2 | 2 | 0 | 0 | 100.0% |
| Diemer-Duhm Gambit (DDG): 4...f5 | 2 | 0 | 1 | 1 | 0.0% |
| Amazon Attack | 2 | 1 | 0 | 1 | 50.0% |
🔥 Streaks
| Streak | Longest | Current |
|---|---|---|
| Winning | 10 | 1 |
| Losing | 8 | 0 |