Avatar of Deyan Kostov

Deyan Kostov FM

Username: DeyanKostov

Location: Rotterdam

Playing Since: 2022-09-19 (Active)

Wow Factor: ♟♟♟♟♟

Chess.com

Rapid: 2465
234W / 76L / 48D
Blitz: 2685
1094W / 711L / 307D
Bullet: 2571
1037W / 483L / 135D

Deyan Kostov - FIDE Master Extraordinaire

Meet Deyan Kostov, a chess virtuoso who proudly carries the title of FIDE Master. With a flair for the game that blends deep tactical awareness and a pinch of cunning, Deyan has become a force to reckon with on the 64 squares.

Rating Rollercoaster and Peak Performance

From a blitz rating climbing steadily from the 2300s to an eye-popping peak of 2759 in January 2025, Deyan's meteoric rise proves that persistence and skill pay off. Bullet and rapid formats are no strangers either, with peaks of 2571 and 2481 respectively.

Style of Play - The Art of Tenacity

Known for an 80.43% comeback rate and an impressive 56.57% win rate even after losing a piece, Deyan’s resilience is legendary. With an average of nearly 74 moves per win, games tend to be thrilling marathons rather than quick draws. After all, who likes giving up early? Definitely not Deyan, boasting a low early resignation rate of 2.01%!

Opening Repertoire - Secrets and Surprises

Deyan embraces the unexpected, with the mysterious "Top Secret" opening boasting a solid win rate above 54%. The Trompowsky Attack is a knockout with a brilliant 77.78% success rate, making opponents squirm early on. The classic and aggressive Indian Game? Well, it’s a tricky love-hate relationship with less success, but who doesn’t enjoy a challenge?

Chess Battle Stats

  • Blitz: 1035 wins against 620 losses, peppered with 267 draws. That's a lot of quickfire drama!
  • Bullet: 873 wins showing lightning speed and reflexes.
  • Rapid: 259 wins proving adaptability across time controls.

Recent Triumph

On June 3, 2025, Deyan dazzled with the Trompowsky Attack – slicing through defenses as White and clinching victory by resignation in just 11 moves. Precision, nerves of steel, and a bishop sacrificing for glory!

Psychological Quirks and Fun Facts

Deyan's tilt factor of 6 suggests occasional emotional wobbling — who doesn’t get a bit frustrated when a brilliant plan falls apart? But with a best playing time around 5 AM, maybe coffee (or sheer stubbornness) fuels those early-morning wins. Also, surprisingly, Deyan wins more (71.43%) at the stroke of midnight — a true night owl!

Opponent Chronicles

Some adversaries stand as favorites or rivals, with nearly perfect win rates against many (100% against quite a few usernames). Among frequent foes are players like martinprolol10 and matinisdoodoo with over 50 encounters each — chess friendships or frenemies? Only the board knows.

The Legend Continues

Whether it's a bullet blizzard or a blitz storm, Deyan Kostov consistently proves that dedication, tactical brilliance, and a dash of playfulness are the recipe for chess mastery. Here's to many more victories, surprising openings, and heart-stopping games. Watch out, chess world — this FM’s next move might just be a checkmate to remember!


Coach Chesswick's Profile Photo
Coach Chesswick

Feedback on your recent bullet games

You demonstrated a willingness to fight for initiative in fast time controls and to press during middlegames. In the win, you kept the pressure on your opponent and looked for active, aggressive actions that created practical winning chances even when time was tight. In the loss, you showed resilience and found sharp tactical ideas, but some lines became risky under time pressure. In the draw, you stayed resourceful and kept chances alive, though there were moments where simpler, safer moves would have reduced risk in a time scramble.

What you’re doing well

  • Keeping the opponent under pressure by playing actively and using open files when you have them.
  • Finding tactical resources and staying in the fight even when the position becomes complicated.
  • Maintaining a fighting mindset and not shying away from sharp, unclear positions in bullet time controls.

Key areas to improve for bullet games

  • Time management: allocate your clock more predictably. Avoid long, risky calculations on non-critical moves. Try to settle on a quick candidate plan within the first few seconds of each move and only deepen when there is a concrete tactic or threat.
  • Prefer safe simplifications when you’re ahead or the position is unclear. In many bullet games, transforming to a simpler ending or exchanging into a clearly favorable structure preserves your advantage and reduces the chance of a blunder.
  • Pattern recognition: strengthen your instinct for common tactical motifs and typical endgames in the openings you use. This helps you spot forcing moves quickly and reduce decision time.
  • Endgame technique: practice basic rook endings and king+pawns endings, which frequently arise in bullet. Clear plans (e.g., using the opposition, creating passed pawns, or using the king actively) help convert small advantages.
  • Safety checks under pressure: before making a move, scan for immediate checks, captures, and threats from your opponent. This reduces the chance of surprise checks or forced trades that swing the evaluation.

Practical drills you can start today

  • Time-boxed decision drill: in every bullet session, cap your initial candidate move thought to 2-3 seconds. If nothing concrete emerges, pick a solid developing move and move on.
  • Two-move forecast drill: for each move, name two plausible responses from your opponent and plan a simple reply to each. This reduces time spent in deep calculations on each turn.
  • Daily tactics bonus: 10 quick puzzles focusing on checks, captures, and forcing moves to sharpen fast pattern recognition.
  • Endgame practice: 15 minutes per week on rook endings and king+pawn endings to build confidence in converting advantages in late stages.
  • Post-game quick review: after each bullet session, spend 5 minutes noting one or two turn-by-turn moments where a quicker, safer choice would have improved the result.

Two-week mini plan to level up bullet play

  • Week 1: Time discipline focus
  • Week 2: Endgame and simplification focus

Daily routine example: 15 minutes of quick puzzles, 15 minutes of rapid game practice (with a 1+0 or 0+1 time control), followed by 5 minutes of a post-game reflection. Aim to reduce time trouble incidents and increase accuracy in critical moments.



🆚 Opponent Insights

Recent Opponents
capitanlentejuelilla 0W / 1L / 0D View
Patrik-Robert Maruntis 0W / 0L / 2D View
Aryan Achuthan 1W / 0L / 0D View
mathnerd55 1W / 0L / 0D View
zbrodniarz1889 0W / 1L / 0D View
TrashyDude 2W / 0L / 0D View
Batbold Nyamsuren 0W / 1L / 0D View
aminazinas 0W / 2L / 0D View
ginseng0904 1W / 0L / 0D View
athenalegacy 1W / 0L / 1D View
Most Played Opponents
freestylesmoothie 35W / 6L / 10D View Games
martinprolol10 50W / 0L / 1D View Games
matinisdoodoo 50W / 1L / 0D View Games
didacalarcon 12W / 0L / 0D View Games
chesscoachdiego 4W / 3L / 2D View Games

Rating

Year Bullet Blitz Rapid Daily
2025 2571 2685 2465
2024 2463 2702 2345
2023 2409 2477 2327
2022 2177 2340 2197
Rating by Year202220232024202527022177YearRatingBulletBlitzRapid

Stats by Year

Year White Black Moves
2025 402W / 250L / 104D 361W / 281L / 108D 83.7
2024 203W / 126L / 63D 222W / 114L / 59D 84.4
2023 514W / 202L / 75D 461W / 236L / 71D 74.4
2022 199W / 51L / 12D 185W / 60L / 16D 70.1

Openings: Most Played

Bullet Opening Games Wins Losses Draws Win Rate
Amazon Attack 176 126 38 12 71.6%
Amazon Attack: Siberian Attack 133 84 41 8 63.2%
Australian Defense 115 83 22 10 72.2%
Sicilian Defense 97 63 20 14 65.0%
London System: Poisoned Pawn Variation 69 38 28 3 55.1%
King's Indian Defense: Larsen Variation 58 46 9 3 79.3%
QGA: 3.e3 c5 51 36 12 3 70.6%
Sicilian Defense: Closed 47 30 13 4 63.8%
Sicilian Defense: Classical Variation 44 28 9 7 63.6%
Sicilian Defense: Alapin Variation 37 18 17 2 48.6%
Blitz Opening Games Wins Losses Draws Win Rate
Amazon Attack: Siberian Attack 232 107 92 33 46.1%
Amazon Attack 224 131 64 29 58.5%
Sicilian Defense 113 53 42 18 46.9%
King's Indian Defense: Larsen Variation 91 56 24 11 61.5%
London System: Poisoned Pawn Variation 86 45 28 13 52.3%
QGA: 4.e3 a6 67 29 29 9 43.3%
Sicilian Defense: Richter-Rauzer Variation, Modern Variation 63 32 22 9 50.8%
Sicilian Defense: Alapin Variation 59 34 13 12 57.6%
Unknown 58 41 16 1 70.7%
Sicilian Defense: Closed 53 25 23 5 47.2%
Rapid Opening Games Wins Losses Draws Win Rate
Amazon Attack 42 30 6 6 71.4%
Amazon Attack: Siberian Attack 30 22 5 3 73.3%
Sicilian Defense 24 18 4 2 75.0%
Sicilian Defense: Closed 13 8 3 2 61.5%
London System: Poisoned Pawn Variation 12 8 1 3 66.7%
QGA: 4.e3 a6 11 5 3 3 45.5%
QGA: 3.e3 c5 11 6 4 1 54.5%
King's Indian Defense: Larsen Variation 10 6 4 0 60.0%
Sicilian Defense: Alapin Variation 9 4 2 3 44.4%
Australian Defense 9 7 1 1 77.8%

🔥 Streaks

Streak Longest Current
Winning 21 0
Losing 7 1
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