Avatar of Sebastian Mihajlov

Sebastian Mihajlov IM

Username: CaptainCasanova

Location: Oslo

Playing Since: 2015-06-01 (Active)

Wow Factor: ♟♟♟♟♟

Chess.com

Daily: 1660
34W / 2L / 0D
Rapid: 2670
2W / 0L / 0D
Blitz: 2844
1338W / 1121L / 327D
Bullet: 2848
1829W / 1645L / 231D

Sebastian Mihajlov - International Master Extraordinaire

Known online by the daring alias CaptainCasanova, Sebastian Mihajlov is an International Master recognized by FIDE. With a reputation forged through countless battles on the 64 squares, Sebastian is a chess gladiator who blends strategic mastery with a sprinkle of unconventional flair.

Rating & Achievements

Debuting in serious play around 2015, Sebastian quickly climbed the ranks, peaking at a staggering Bullet rating of 2989 in May 2023, nearly reaching that mythical 3000 mark where only the gods dwell. Not just a bullet stormer, he has shown strength across all time controls, including a blitz peak of 2974 and a rapid peak of 2812.

Playing Style & Strengths

With an average of over 80 moves per game, Sebastian prefers the marathon of deep strategy rather than quick skirmishes—unless it’s bullet where he channels lightning-fast instincts. Known for an 84.8% comeback rate after setbacks, opponents beware: even when pieces go missing, Sebastian's tactical eye and resilience often turn the tide in his favor.

Opening Repertoire Highlights

  • Bullet: While the exact repertoire remains a "Top Secret", he’s shown prowess wielding the Sicilian Defense and Caro Kann Exchange Variation among others.
  • Blitz: A fearless master of the Scandinavian Defense with a perfect 6/6 record, and the Caro Kann Main Line perfectly executed.
  • Daily games: Dominates with an impressive 94.5% win rate, suggesting when Sebastian takes his time, checkmate is nearly guaranteed.

Memorable Battles

Recently, Sebastian delivered a stunning victory as Black in a Modern Defense game against "JackRodgers" by winning on time after a tense 49-move duel demonstrating patience and precision. However, even masters face challenges; his last recorded loss came by resignation against "SinisterSnake" in a Queen's Pawn Anti-Torre Attack—proof that even Casanova can be caught off guard.

Fun Facts & Quirks

  • His best chess hours are early morning—some say he channels the quiet power of dawn.
  • His longest winning streak stands at an impressive 35 games—enough to make anyone consider surrendering in advance.
  • Despite impressive results, he's known to have a modest tilt factor of 19, meaning the computer might have yelled at him a few times.
  • If Sebastian were a superhero, his special power would be bouncing back: almost 85% comeback after losing pieces.

Whether blitzing through rounds or engaging in deep strategic battles, Sebastian Mihajlov’s chess journey continues to captivate fans and opponents alike. From bullet storms to classical endgame finesse, watch this International Master turn pawns into poetry on the chessboard!


Coach's Avatar

What went well in your recent rapid games

You demonstrated good pressure and active piece play in dynamic positions. In your recent wins, you were able to keep the initiative and convert pressure into a decisive outcome. In open, tactical settings you found practical chances to complicate the position and keep the opponent under constant decision pressure. In Chess960 games, you managed to create counterplay and find tactical ideas even when the position became chaotic. Overall, your willingness to fight for initiative and to press when you see forcing moves is a real strength in fast time controls.

  • You look for concrete, forcing ideas when the opponent makes positional concessions, which helps you stay in the game even after rough middlegame transitions.
  • You maintain activity with your pieces, often coordinating rooks and minor pieces to create threats and keep your opponent under pressure.
  • You adapt to varied openings and still look for practical chances, rather than drifting into passive, slow plans.

Key improvement areas to focus on

  • Sharpen tactical defense and threat detection. Some games show your opponent exploiting back-rank and coordination weaknesses. Build a quick checklist for yourself after each opponent’s move: what threats exist, what opponent is targeting, and which of your pieces are unprotected.
  • Time management in sharp positions. In rapid, it’s easy to rush critical decisions. Practice allocating a fixed thinking time to critical moments (e.g., 3–5 minutes for the next 6–8 moves) and use a plan for each stage of the game (opening, middlegame, endgame).
  • Solidify opening plans into a reliable, repeatable structure. From openings you’ve played, some lines lead to imbalanced, tactical middlegames. Pick 1–2 openings as your main repertoire and study the typical middlegame plans, rather than memorizing long move sequences.
  • Endgame technique and simplification decisions. There are several games where exchanges and simplifications could reduce risk or convert small advantages. Practice common rook endings and basic pawn endgames so you can value trades more accurately.
  • Post-game analysis routine. After each rapid game, write down 3 concrete takeaways: one thing you did well, one thing to avoid, and one tactical pattern to watch for in similar positions.

Opening plan and practical guidance

Based on your openings performance, a focused approach can help you stabilize results and sharpen your understanding:

  • King’s Indian Defense: Averbakh Variation stands out with solid results. Consider using this as a main go-to when you want dynamic chances but with clear structural plans. Study typical middlegame themes in this line, such as piece play on the king’s side and central counterplay.
  • French Defense: Burn Variation and Bird-related lines show mixed results in small samples. You can keep these as secondary options, but pair them with targeted study of common break ideas and typical pawn structures to avoid getting into uncharted territory mid-game.
  • Bird Opening family and related Dutch-Bird ideas can be viable if you enjoy flexible setups. When you choose these, focus on building a coherent middlegame plan rather than drifting into independent, uncoordinated piece play.

Practice plan for the next 2 weeks

  • Tactics drills: 15 minutes daily focused on spotting forced sequences, checks, captures, and simple tactical motifs that frequently appear in quick games.
  • Opening study: Pick 1 main opening (e.g., King’s Indian Defense: Averbakh Variation) and 1 secondary opening (e.g., Bird/Openings) and review 3 typical middlegame plans for each week. Aim to recognize key pawn breaks and piece maneuvers.
  • Endgame focus: Do 2 short rook ending drills and 2 basic king-and-pawn endings per week to improve conversion and defense in simplified positions.
  • Post-game analysis ritual: After every rapid game, write a brief 3-point summary and note one tactical pattern you want to watch for in the next sessions.
  • Practice games with a time control of 10+3 or 15+5 to train time management while keeping focus on quality of moves in critical moments.

Next steps and micro-goals

  • By the end of two weeks, have a stable main opening (preferably King’s Indian Defense: Averbakh Variation) with a clear middlegame plan for 70% of typical positions you reach.
  • Improve post-game notes to three concrete takeaways per game, focusing on both strengths and avoidable mistakes.
  • Show measurable progress in tactics and endgames: aim to increase your average tactic score in daily puzzles and to convert a higher percentage of rook endings when they arise in rapid games.


🆚 Opponent Insights

Recent Opponents
jkg 8W / 0L / 0D
Most Played Opponents
Lars Oskar Hauge 52W / 97L / 12D
Jakub Pulpan 40W / 72L / 4D
Jonah Willow 40W / 51L / 5D
Anahita Gholami Orimi 36W / 52L / 5D
anon102030 36W / 37L / 3D

Rating

Year Bullet Blitz Rapid Daily
2025 2848 2844
2024 2804 1660
2023 2822 2801 2670 1654
2022 2573 2719
2021 2713 2657
2020 2748 2593
2019 2691 2716 2382 1010
2018 2600 2743 2399 1010
2017 2415 2425 2356
2016 2138
2015 1970
Rating by Year2015201620172018201920202021202220232024202528481010YearRatingBulletBlitzRapidDaily

Stats by Year

Year White Black Moves
2025 75W / 49L / 10D 75W / 50L / 9D 81.7
2024 23W / 19L / 2D 27W / 13L / 2D 79.6
2023 246W / 90L / 16D 224W / 109L / 30D 73.8
2022 35W / 34L / 6D 32W / 31L / 6D 79.5
2021 183W / 153L / 27D 167W / 169L / 28D 89.5
2020 44W / 54L / 7D 46W / 53L / 8D 88.4
2019 816W / 680L / 145D 727W / 766L / 145D 83.4
2018 238W / 193L / 48D 239W / 186L / 53D 85.2
2017 111W / 89L / 19D 103W / 100L / 16D 83.9
2016 2W / 0L / 0D 2W / 1L / 0D 86.6
2015 5W / 0L / 0D 4W / 0L / 0D 60.8

Openings: Most Played

Blitz Opening Games Wins Losses Draws Win Rate
Caro-Kann Defense 101 53 36 12 52.5%
French Defense 74 38 27 9 51.4%
Sicilian Defense: Najdorf Variation 71 40 25 6 56.3%
Modern 62 31 25 6 50.0%
Amar Gambit 59 36 21 2 61.0%
French Defense: Burn Variation 57 30 23 4 52.6%
Slav Defense 56 25 21 10 44.6%
French Defense: Tarrasch Variation, Chistyakov Defense 56 26 22 8 46.4%
Blackburne Shilling Gambit 54 27 24 3 50.0%
Italian Game: Two Knights Defense 52 35 11 6 67.3%
Bullet Opening Games Wins Losses Draws Win Rate
Amar Gambit 446 214 207 25 48.0%
Colle System: Rhamphorhynchus Variation 199 99 89 11 49.8%
French Defense 173 97 63 13 56.1%
Nimzo-Larsen Attack 157 76 70 11 48.4%
King's Indian Attack 135 47 76 12 34.8%
Modern 118 63 53 2 53.4%
East Indian Defense 102 50 47 5 49.0%
Australian Defense 89 46 38 5 51.7%
Barnes Defense 85 46 37 2 54.1%
Czech Defense 83 53 25 5 63.9%
Daily Opening Games Wins Losses Draws Win Rate
Modern 7 6 1 0 85.7%
Scandinavian Defense 5 5 0 0 100.0%
Caro-Kann Defense 3 3 0 0 100.0%
Sicilian Defense: Scheveningen Variation 2 2 0 0 100.0%
Amazon Attack: Siberian Attack 2 2 0 0 100.0%
Amar Gambit 2 2 0 0 100.0%
Sicilian Defense: Accelerated Dragon, Maróczy Bind 2 1 0 1 50.0%
Blackburne Shilling Gambit 2 2 0 0 100.0%
Elephant Gambit 2 2 0 0 100.0%
Pirc Defense: Classical Variation 2 2 0 0 100.0%
Rapid Opening Games Wins Losses Draws Win Rate
French Defense: Burn Variation 3 1 2 0 33.3%
King's Indian Defense: Averbakh Variation 3 2 1 0 66.7%
QGD: 4.Nf3 3 1 0 2 33.3%
Slav Defense 3 0 1 2 0.0%
Bird Opening 2 1 1 0 50.0%
Blackburne Shilling Gambit 2 1 1 0 50.0%
Dutch Defense 2 0 1 1 0.0%
King's Indian Defense: Orthodox Variation, Aronin-Taimanov Defense 2 0 1 1 0.0%
Döry Defense 2 2 0 0 100.0%
Gruenfeld: Russian, 7.e4 Nfd7 2 1 1 0 50.0%

🔥 Streaks

Streak Longest Current
Winning 35 8
Losing 19 0