Avatar of Sergey And. Korshunov

Sergey And. Korshunov FM

Username: Chessmatenokk17

Playing Since: 2019-01-14 (Active)

Wow Factor: ♟♟♟♟♟♟

Chess.com

Daily: 1783
17W / 3L / 0D
Rapid: 2657
183W / 93L / 29D
Blitz: 2973
4816W / 4464L / 906D
Bullet: 2809
772W / 637L / 88D

Sergey And. Korshunov - FIDE Master

Also known in the chess world as Chessmatenokk17, Sergey And. Korshunov is a FIDE Master whose chess journey reads like a thrilling marathon of checkmates, tactical wizardry, and relentless pursuit of the 64 squares' glory.

Since bursting onto the scene, Sergey has showcased prodigious talent across all time controls: blitz, bullet, rapid, and daily chess. With peak ratings of 2894 in blitz, 2807 in bullet, and a sharp 2580 in rapid, this player dances expertly through the chaos of quick games while maintaining formidable strength in longer battles.

Sergey’s style is a mix of deep strategic insight and unexpectedly brash tactical strikes — a concoction that often leaves opponents scratching their heads and their kings on thin ice. On average, his wins last around 81 moves, proving that patience is indeed a virtue, but don’t be fooled; with a comeback rate exceeding 88%, he’s also a master of shaking off setbacks and turning tables with an almost cinematic flair.

Career Highlights & Style

  • A tenure marked by highs and lows, including a monster 22-game winning streak and some lessons learned in tough moments.
  • Preferred opening mysteries: Sergey keeps opponents guessing with his "Top Secret" repertoire, racking up thousands of games played and a win rate above 50% in bullet and nearly 60% in rapid.
  • Psychologically, Sergey is a resilient competitor with a balanced tilt factor and a surprisingly sharp eye for late-night tactics — his best time to play is around 1 AM. Night owls, rejoice!

Most Memorable Recent Battles

One of Sergey’s finest recent performances was a white-piece masterpiece in the Caro-Kann Advanced Variation where he forced a resignation after relentless pressure and precise calculation, proving that no defense can withstand the might of a well-prepared FIDE Master.

Not every game is a fairy tale though — like every great artist, Sergey has faced defeats against strong opponents, such as a recent tough game where he valiantly fought but fell to an opponent’s strategic edge. Even the best occasionally stumble, adding fuel to the fire for the next epic showdown.

Fun Fact

While Sergey’s username Chessmatenokk17 may sound like a secret code, it perfectly matches his gameplay: unpredictable, sharp, and always ready to “checkmate” your expectations.

With thousands of online battles fought, Sergey is truly a gladiator of the chessboard, combining obsession, skill, and a pinch of humor to show that chess is as much about resilience as it is about raw talent.

Whether it's battling it out in seconds or strategizing over days, Sergey And. Korshunov is a name that chess fans will continue to watch closely — for those moments when strategy meets brilliance on the battlefield of kings and pawns.


Coach's Avatar

Overall Performance Review

Sergey, you've shown very solid progress recently with a good winning ratio and consistent improvement in your rating. Your current strength adjusted win rate is approximately 58.5%, which reflects your ability to capitalize on opportunities against opponents of varying levels. Notably, your rating has increased by 18 points in the last month and an impressive 137 points over the last six months. Your upward trend, indicated by a positive slope of 26.6 for the 1 and 12 month periods, shows you have been steadily improving. Maintaining this growth mindset will serve you well.

Strengths in Your Games

  • Opening Choices: You have a 100% win rate in diverse openings such as the Scotch Game, Sicilian Defense variants, Nimzo-Larsen Attack, Ruy Lopez, and others. This suggests good preparation and understanding of your opening repertoire.
  • Consistent Tactical Play: In your reviewed wins, you demonstrated effective piece coordination and strong tactical awareness, particularly when you launched attacks or defended precisely under pressure.
  • Endgame Handling: Your games often reach complex endgames where you show resilience and strategic decision-making that converts slight advantages into wins.
  • Adaptability: Whether playing as White or Black, you adapt your plans dynamically, which allows you to respond effectively to different styles and unforeseen situations in your matches.

Areas for Improvement

  • Conversion in Complex Positions: Some losses and draws indicate moments where maintaining initiative or simplifying the position earlier could have turned the tables. Focusing on recognizing critical moments will help increase your edge.
  • Endgame Precision: While your endgame is solid, working on deeper knowledge around key endgame concepts and calculation under pressure can help avoid missed opportunities, especially in rook and minor piece endings.
  • Managing Counterplay: In a few games, such as the Scandinavian Defense match, your opponent generated effective counterplay. Developing a stronger sense for neutralizing opponent threats early will be beneficial.
  • Time Management: Although your games are daily and allow ample reflection, practicing decision-making speed with puzzles or blitz games could help sharpen intuition and improve in-the-moment calculations.

Suggested Focus Areas and Resources

  • Opening Study: Continue deepening your current opening knowledge and try exploring variations within your favored systems like the Scotch Game and the Sicilian Defense, improving both theory and practical understanding.
  • Endgame Training: Dedicate regular practice to rook and minor piece endgames, especially focusing on common themes such as opposition, triangulation, and basic mating patterns.
  • Tactical Exercises: Incorporate puzzles and pattern recognition drills into your daily routine to enhance your calculation speed and accuracy.
  • Game Analysis: Review your lost and drawn games to identify critical turning points. Analyze with engines and annotate to fully understand mistakes and alternative moves.

Keep up your strong work ethic and continue this steady improvement. Each game is a valuable opportunity to learn and grow.



🆚 Opponent Insights

Recent Opponents
viktorskliarov 1W / 0L / 0D
Anthony Wirig 6W / 8L / 1D
dixit_nikhil 1W / 0L / 0D
Fabiano Caruana 1W / 2L / 0D
Kushagra Mohan 6W / 2L / 0D
Kamil Plichta 1W / 2L / 0D
Peter Roberson 1W / 0L / 0D
Caleb Levi 0W / 1L / 0D
vfvgbhn 1W / 3L / 1D
Vugar Rasulov 0W / 1L / 0D
Most Played Opponents
gubajdullin 17W / 105L / 3D
Roman Zhenetl 25W / 19L / 8D
PracticeMakesOK 22W / 18L / 6D
Vlad Lymar 18W / 17L / 3D
Dmitry Tatarinov 12W / 17L / 4D

Rating

Year Bullet Blitz Rapid Daily
2025 2809 2914 2651
2024 2734 2861 2349
2023 2607 2668
2022 2332 2403 2175
2021 2221 2392 2281 1783
2020 2119 2327 2233 1646
2019 1818 2019 1767
Rating by Year201920202021202220232024202529141646YearRatingBulletBlitzRapidDaily

Stats by Year

Year White Black Moves
2025 723W / 638L / 156D 687W / 675L / 156D 94.3
2024 1076W / 978L / 192D 1029W / 985L / 230D 91.3
2023 140W / 108L / 19D 147W / 99L / 23D 89.4
2022 61W / 54L / 13D 65W / 53L / 11D 82.1
2021 280W / 197L / 48D 234W / 235L / 40D 80.7
2020 253W / 251L / 42D 281W / 246L / 32D 73.8
2019 446W / 406L / 40D 467W / 400L / 41D 66.3

Openings: Most Played

Bullet Opening Games Wins Losses Draws Win Rate
Colle System: Rhamphorhynchus Variation 111 58 47 6 52.2%
Modern 100 51 44 5 51.0%
Amar Gambit 67 40 23 4 59.7%
Australian Defense 65 38 23 4 58.5%
Nimzo-Larsen Attack 54 30 23 1 55.6%
King's Indian Attack 46 22 22 2 47.8%
Scandinavian Defense 40 18 20 2 45.0%
Döry Defense 39 20 16 3 51.3%
Hungarian Opening: Wiedenhagen-Beta Gambit 38 20 15 3 52.6%
Ruy Lopez 37 21 16 0 56.8%
Rapid Opening Games Wins Losses Draws Win Rate
Scotch Game 23 16 7 0 69.6%
Ruy Lopez 16 8 5 3 50.0%
Modern 14 8 6 0 57.1%
Amazon Attack: Siberian Attack 10 8 1 1 80.0%
English Opening: Agincourt Defense 10 8 1 1 80.0%
Blackburne Shilling Gambit 9 1 8 0 11.1%
London System: Poisoned Pawn Variation 9 7 0 2 77.8%
Amar Gambit 8 5 2 1 62.5%
Barnes Defense 7 3 3 1 42.9%
Italian Game: Two Knights Defense 7 5 2 0 71.4%
Blitz Opening Games Wins Losses Draws Win Rate
Caro-Kann Defense 384 192 164 28 50.0%
Ruy Lopez 356 169 154 33 47.5%
Döry Defense 338 146 158 34 43.2%
Sicilian Defense: O'Kelly Variation 294 132 127 35 44.9%
French Defense: Advance Variation 273 137 124 12 50.2%
Scotch Game 243 120 108 15 49.4%
Amazon Attack: Siberian Attack 242 126 98 18 52.1%
Sicilian Defense: Najdorf Variation 217 98 102 17 45.2%
Modern 216 98 100 18 45.4%
Blackburne Shilling Gambit 196 84 102 10 42.9%
Daily Opening Games Wins Losses Draws Win Rate
Scotch Game 2 2 0 0 100.0%
Sicilian Defense: Chekhover Variation 1 1 0 0 100.0%
Colle System: Rhamphorhynchus Variation 1 1 0 0 100.0%
Modern 1 1 0 0 100.0%
Nimzo-Larsen Attack 1 1 0 0 100.0%
Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line 1 1 0 0 100.0%
Caro-Kann Defense: Karpov Variation 1 1 0 0 100.0%
Bishop's Opening 1 1 0 0 100.0%
Sicilian Defense 1 1 0 0 100.0%
Ruy Lopez 1 1 0 0 100.0%

🔥 Streaks

Streak Longest Current
Winning 22 0
Losing 12 3