Avatar of Sebastian Kostolansky

Sebastian Kostolansky IM

Username: selvas123

Location: Lubbock

Playing Since: 2017-09-03 (Active)

Wow Factor: ♟♟♟♟♟

Chess.com

Daily: 1287
6W / 2L / 0D
Rapid: 2600
93W / 32L / 6D
Blitz: 2911
1340W / 1187L / 221D
Bullet: 2864
927W / 687L / 112D

Sebastian Kostolansky - International Master Extraordinaire

Meet Sebastian Kostolansky, the chess maestro known online as selvas123. An International Master certified by the grand overlords of chess at FIDE, Sebastian is no stranger to the battlefield of 64 squares. His journey through pawns and knights has been as thrilling as a roller coaster with more twists than a Sicilian Defense.

Rise of a Tactical Titan

From humble beginnings with a blitz rating below 1500 in 2017, Sebastian charged through the ranks like a knight on a mission. By 2025, he had skyrocketed to a scorching peak blitz rating of 2882 and a bullet rating cresting at 2857. If speed chess were an Olympic sport, he'd be the Usain Bolt of the board – faster and sharper than most can blink.

Style and Strategy

Sebastian’s playstyle is a blend of deep strategic understanding and fiendish tactical awareness. With an 82.67% frequency of bringing endgames to the table and an impressive 83.77% comeback rate when trailing, he is both patient and relentless. His average winning game lasts a robust 74 moves, proving he doesn’t shy away from a marathon when victory demands it. Fun fact: he’s best known for grinding out wins in openings kept so secret even his chess friends are left guessing.

Favorite Openings

  • Blitz Favorite: "Top Secret" — a mysterious favorite that’s rattled opponents over 2600 times!
  • Sicilian Defense Nyezhmetdinov Rossolimo Attack: With a 75% win rate, it’s his spicy weapon of choice.
  • Queens Gambit Declined Charousek Variation: Developed to perfection with a 75% success rate.

Psychology & Quirks

Sebastian’s psychological resilience is legendary. With a tilt factor of just 14, he keeps his cool even when the chess gods throw curveballs. His secret weapon? Playing best in the wee hours – around 3 AM – when the rest of us are just dreaming of chess victories. He also has an odd habit of embracing the unknown termination methods (think draws due to mysterious forces), with nearly 225 games ending in such enigmatic ways.

Recent Exploits

In a dazzling recent game against kashishmjain, Sebastian executed a masterful Kings Indian Defense, forcing an opponent time-out after complex positional play starting with 1.Nf3 and culminating in a queen check – showing he’s as formidable on the clock as he is on the board. His ability to convert pressure into wins is second to none.

Fun Facts

  • Can win on time just as well as on checkmate – proving sometimes the clock is mightier than the sword.
  • Maintains a delightful 54% win rate in bullet chess — chaos is his playground.
  • Has systematically demolished opponents with usernames like "fransenflug" and "tiger_claudio", boasting a perfect 100% win rate.

Whether lightning-fast bullet duels or marathon blitz marathons, Sebastian Kostolansky's chess saga continues to thrill. Brace yourself when encountering selvas123 online – he might just outclass you while sipping coffee and grinning mysteriously.


Coach Chesswick's Profile Photo
Coach Chesswick

Recent Performance Overview

Sebastian, congratulations on your recent progress! Your strength adjusted win rate of about 54.4% is a solid foundation to build upon, especially considering the consistent gains reflected by your positive rating trend of +115 over the last month and steady improvement over 3, 6, and 12 months.

This steady upward trajectory demonstrates your growing understanding of game dynamics and ability to convert that into practical results. Keep focusing on learning from each game to maintain this momentum.

Analysis of Your Recent Games

Looking at your latest wins and losses, some key points stand out:

  • Opening choices: You have been experimenting with openings like the Indian Game and the Alekhine's Defense, which shows a versatile approach. Continue exploring these while also deepening your knowledge to gain an edge in the early stages.
  • Attack and defense: You often engage actively, for example, pursuing aggressive moves involving bishops and knights early on. This has helped you achieve tactical victories and checkmates as in one of your games won by checkmate quickly. However, occasionally your opponent exploited gaps in defense, leading to losses on time or positional difficulties.
  • Time management: Some games ended due to opponents losing on time. This indicates you maintain pressure and create complex positions that challenge their clock management. Try to also ensure your own time management stays sharp to avoid reciprocal time trouble.

Your games show a good balance between tactical awareness and strategic planning, but refining these aspects further will continue to improve your performance.

Areas to Focus On

  • Opening study: Since you experiment with different openings, solidify understanding of plans and key tactics linked to your favorite openings. This will give you confidence and allow you to capitalize on early advantages.
  • Positional play: Look for ways to improve your defensive structure to minimize vulnerabilities, especially around your king. In some games defensive coordination was tested early.
  • Endgame technique: Keep practicing common endgame patterns as several of your wins were concluded by checkmate or resignation after pressure. Strong endgame skills help convert advantages consistently.
  • Time control skills: Work on pacing your moves in daily games to avoid time pressure, ensuring you maintain strong play through to the finish.

Next Steps

  • Review your recent winning games, noting patterns that led to success and aim to replicate those in similar positions.
  • Analyze losses with a focus on how the opponent exploited weaknesses to prevent repeating mistakes.
  • Use puzzles and tactical exercises related to your openings and typical middlegame themes you encounter.
  • Consider setting small goals like improving rating by 50 points over two months while tracking progress.

Keep enjoying the game and maintaining a growth mindset. Chess improvement is a marathon, and your steady rating increase shows you are on the right path.



🆚 Opponent Insights

Recent Opponents
Srihari L R 2W / 0L / 0D View
Suresh Harsh 4W / 4L / 1D View
Srihari L 1W / 1L / 0D View
Manish Anto Cristiano F 0W / 1L / 1D View
Koustav Chatterjee 1W / 0L / 0D View
Balaji Daggupati 0W / 1L / 0D View
Rahul Srivatshav P 1W / 0L / 0D View
karoliukasj 1W / 0L / 0D View
Most Played Opponents
blk2006 36W / 15L / 2D View Games
bluebird_express 25W / 15L / 5D View Games
Alexander Rustemov 5W / 25L / 5D View Games
uultimaoportunidad 16W / 16L / 2D View Games
Alexander Kopylov 4W / 19L / 5D View Games

Rating

Year Bullet Blitz Rapid Daily
2025 2864 2911 2600
2024 2800 2750 2520
2023 2803 2803 2513
2022 2662
2021 2741 2727 2244
2020 2461 2639 2253 1287
2019 2443 2600 2014
2018 2302 2295 1905 1172
2017 1324 1759 1680
Rating by Year20172018201920202021202220232024202529111172YearRatingBulletBlitzRapidDaily

Stats by Year

Year White Black Moves
2025 249W / 124L / 28D 223W / 155L / 31D 87.0
2024 88W / 34L / 4D 75W / 36L / 12D 85.6
2023 219W / 148L / 37D 210W / 166L / 24D 88.4
2022 102W / 137L / 20D 98W / 130L / 39D 85.5
2021 139W / 157L / 26D 130W / 157L / 29D 84.1
2020 60W / 63L / 14D 68W / 78L / 8D 80.6
2019 146W / 107L / 23D 148W / 114L / 17D 79.0
2018 206W / 162L / 19D 205W / 154L / 17D 75.8
2017 66W / 29L / 1D 74W / 18L / 1D 49.5

Openings: Most Played

Blitz Opening Games Wins Losses Draws Win Rate
Sicilian Defense: Alapin Variation, Sherzer Variation 141 59 68 14 41.8%
Caro-Kann Defense 136 66 57 13 48.5%
Sicilian Defense 95 50 34 11 52.6%
Unknown 82 51 28 3 62.2%
Sicilian Defense: Moscow Variation 81 42 35 4 51.9%
Modern 76 38 34 4 50.0%
Czech Defense 71 27 41 3 38.0%
Sicilian Defense: Taimanov Variation, Bastrikov Variation, English Attack 69 28 39 2 40.6%
Scandinavian Defense 64 31 29 4 48.4%
Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line 63 29 32 2 46.0%
Rapid Opening Games Wins Losses Draws Win Rate
Sicilian Defense: Alapin Variation 6 4 2 0 66.7%
English Opening: Anglo-Indian Defense 5 3 2 0 60.0%
Sicilian Defense 4 0 4 0 0.0%
Sicilian Defense: Taimanov Variation 4 4 0 0 100.0%
Czech Defense 4 4 0 0 100.0%
Sicilian Defense: Kan Variation, Gipslis Variation 3 1 1 1 33.3%
Modern 3 2 1 0 66.7%
Hungarian Opening: Wiedenhagen-Beta Gambit 3 3 0 0 100.0%
QGD: 3.Nc3 Nf6 4.e3 3 3 0 0 100.0%
Sicilian Defense: Closed 3 2 1 0 66.7%
Bullet Opening Games Wins Losses Draws Win Rate
Amar Gambit 74 39 32 3 52.7%
Caro-Kann Defense 74 48 21 5 64.9%
Modern 65 29 29 7 44.6%
Czech Defense 62 26 32 4 41.9%
French Defense 57 35 22 0 61.4%
Sicilian Defense: Alapin Variation, Sherzer Variation 50 24 24 2 48.0%
Colle System: Rhamphorhynchus Variation 47 25 17 5 53.2%
Hungarian Opening: Wiedenhagen-Beta Gambit 47 26 18 3 55.3%
Nimzo-Larsen Attack 35 18 16 1 51.4%
Scandinavian Defense 35 14 18 3 40.0%

🔥 Streaks

Streak Longest Current
Winning 26 1
Losing 14 0
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