Jonathan Westerberg: The Grandmaster of Blitz and Bullet
Meet Jonathan Westerberg, a chess Grandmaster who doesn't just move pieces — they make them dance. With a FIDE title gleaming proudly next to their name, Jonathan has stormed the chess battleground with a style that's part tactical wizardry, part speed demon.
Starting from humble beginnings in 2013 with blitz ratings flirting with the 1300s, Jonathan catapulted to over 2800 in blitz by late 2023 — a meteoric rise fueled by sheer grit and probably a secret stash of caffeine. Bullet and rapid formats see similar fireworks, with peak ratings soaring into the 2700s and 2600s, respectively. If you've blinked, chances are Jonathan has already pulled a stunning queen sacrifice or checkmate on you.
Their game is a rollercoaster: an incredible comeback rate of almost 88%, showing that losing a piece is just a minor inconvenience before a glorious turnaround. Early resignations are rare (less than 1%), proving Jonathan battles down to the wire, squeezing every drop of drama out of each game.
Known for a heavy dose of endgames—over 82% frequency—Jonathan apparently loves the slow burn, slowly strangling opponents with a mix of patience and killer precision. White pieces bring about a nearly 66% win rate, but don't underestimate the black side; even there, Jonathan wrings out victories close to 60%.
If you want to catch them at their best, set your alarm for 8 AM; that’s when their brain’s firing on all cylinders. Also, a curious fact: the 8 AM hour boasts an 85% win rate, so maybe mornings are secretly Jonathan's army of pawns.
Speaking of openings, Jonathan keeps things intriguingly mysterious. The "Top Secret" opening category dominates blitz and bullet with over 60% wins, proving that sometimes the best defense is not letting anyone know what’s coming. But a special shout-out to the Queen's Pawn Opening - Chigorin Variation, a playground where Jonathan’s tactical artistry shines brightest, culminating in dazzling victories, including a recent checkmate extravaganza in 2025.
With thousands of games under the belt and a record that mixes epic wins (145 blitz wins in a recent 254-game span) and the occasional humbling loss (tilt factor 7—because even Grandmasters have off days), Jonathan Westerberg is a thrilling player to watch, play against, or just root for.
Fun fact: Despite being a Grandmaster, Jonathan seems to have mastered the art of winning by timeout just as often as by checkmate. Beat the clock, beat the opponent!
Keep an eye on this legend; the chessboard is their stage, and every move is a performance.
Recent Games Review
Jonathan, looking over your recent bullet games, there are positive aspects and areas to focus on for improvement.
- Opening Choices: You consistently utilize a variety of openings including the Scandinavian Defense, Caro-Kann, and Closed Sicilian, with strong win rates, especially in gambit and Czech Defense lines. This shows a good repertoire breadth that suits your aggressive style.
- Middle Game Play: Some losses, particularly in complex positions, suggest opportunities to enhance calculation under time pressure. There were moments where better defensive moves or consolidations might have prevented material loss or quick declines.
- Endgame Technique: The recent losses on time and positioning indicate improving endgame knowledge and time management remains key, especially in rapid scenarios like bullet where every second counts.
Strengths to Build On
Your play is marked by:
- Effective use of aggressive openings with strong win percentages, indicating good preparation and understanding of these lines.
- Ability to capitalize on opponent weaknesses quickly, which is vital in bullet games where initiative often decides outcomes.
- Maintaining an upward rating trend with steady improvement over the months, reflecting learning and adaptation.
Key Improvement Areas
To continue your climb, consider focusing on:
- Time Management: Practice managing your time better, especially in critical moments to avoid losses on time and rushed mistakes.
- Calculation and Tactical Awareness: Drill tactical motifs and improve calculation depth to reduce blunders in complex positions.
- Endgame Fundamentals: Strengthen basic endgame knowledge to confidently convert advantages and hold difficult draws.
- Opening Flexibility: While your favored openings are solid, working on adapting when facing unexpected responses can provide a strategic edge.
Next Steps for Training
Based on your recent games and performance data, try integrating the following into your practice:
- Regular tactics sessions focusing on bullet-style rapid calculation.
- Timed endgame drills to build speed and precision under pressure.
- Review your bullet games focusing on moments of tactical oversight and missed defensive resources.
- Experiment with mix-and-match openings occasionally to improve adaptability and surprise factor against opponents.
Overall Progress
Your rating trend is very positive, with quick gains in recent months and a strength adjusted win rate above 50%. This reflects excellent potential and consistent improvement. Keep building on your strengths while addressing key tactical and time management aspects to push your bullet performance even higher.
🆚 Opponent Insights
| Recent Opponents | ||
|---|---|---|
| donottouchmyking79 | 1W / 0L / 0D | |
| Mikey Groves | 0W / 1L / 0D | |
| Carlos Alberto Martinez Molina | 1W / 0L / 0D | |
| pyrics | 1W / 0L / 0D | |
| loopliyixin | 0W / 1L / 0D | |
| bejobledi | 1W / 1L / 0D | |
| tule5ai5 | 1W / 0L / 0D | |
| ronin_kagami | 1W / 0L / 0D | |
| albabcreators | 2W / 0L / 0D | |
| panter91 | 0W / 1L / 0D | |
| Most Played Opponents | ||
|---|---|---|
| Emil Jonsson | 253W / 32L / 11D | |
| KingMarriland | 25W / 5L / 4D | |
| PracticeMakesOK | 15W / 15L / 3D | |
| Carlos Alarcia | 23W / 7L / 0D | |
| stellarchess | 15W / 12L / 3D | |
Rating
| Year | Bullet | Blitz | Rapid | Daily |
|---|---|---|---|---|
| 2025 | 2665 | 2773 | 2625 | 1448 |
| 2024 | 2522 | 2716 | 2245 | |
| 2023 | 2509 | 2722 | 2247 | |
| 2021 | 2503 | |||
| 2020 | 2526 | |||
| 2019 | 2275 | 2645 | 2136 | |
| 2018 | 2296 | 2596 | ||
| 2017 | 2395 | |||
| 2016 | 2342 | 1283 | ||
| 2015 | 2282 | 2418 | ||
| 2014 | 2019 | 2256 | 1391 | |
| 2013 | 2019 | 2269 | 1459 | |
| 2009 | 1569 | |||
| 2008 | 1558 |
Stats by Year
| Year | White | Black | Moves |
|---|---|---|---|
| 2025 | 1210W / 535L / 138D | 1143W / 617L / 152D | 87.4 |
| 2024 | 115W / 52L / 22D | 101W / 64L / 27D | 90.0 |
| 2023 | 126W / 45L / 21D | 101W / 67L / 27D | 85.0 |
| 2021 | 1W / 0L / 0D | 0W / 1L / 0D | 101.0 |
| 2020 | 6W / 7L / 0D | 5W / 7L / 1D | 84.0 |
| 2019 | 191W / 100L / 26D | 163W / 136L / 19D | 88.8 |
| 2018 | 113W / 53L / 9D | 101W / 64L / 12D | 89.4 |
| 2017 | 6W / 0L / 0D | 6W / 2L / 0D | 74.6 |
| 2016 | 49W / 6L / 0D | 43W / 8L / 6D | 69.6 |
| 2015 | 72W / 26L / 4D | 69W / 27L / 8D | 83.1 |
| 2014 | 80W / 45L / 5D | 81W / 38L / 7D | 76.6 |
| 2013 | 69W / 22L / 5D | 72W / 24L / 2D | 76.5 |
| 2009 | 2W / 0L / 0D | 0W / 3L / 0D | 43.8 |
| 2008 | 5W / 2L / 0D | 7W / 2L / 0D | 47.2 |
Openings: Most Played
| Bullet Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Caro-Kann Defense | 184 | 114 | 56 | 14 | 62.0% |
| Sicilian Defense: Closed | 180 | 120 | 51 | 9 | 66.7% |
| Scandinavian Defense | 159 | 105 | 41 | 13 | 66.0% |
| Amar Gambit | 103 | 70 | 24 | 9 | 68.0% |
| Modern | 103 | 51 | 43 | 9 | 49.5% |
| Alekhine Defense | 89 | 53 | 25 | 11 | 59.5% |
| Colle System: Rhamphorhynchus Variation | 82 | 51 | 27 | 4 | 62.2% |
| Czech Defense | 76 | 52 | 15 | 9 | 68.4% |
| Australian Defense | 73 | 41 | 26 | 6 | 56.2% |
| Nimzo-Larsen Attack | 71 | 37 | 31 | 3 | 52.1% |
| Blitz Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Sicilian Defense: Closed | 156 | 98 | 45 | 13 | 62.8% |
| Sicilian Defense: Alapin Variation | 114 | 57 | 47 | 10 | 50.0% |
| Caro-Kann Defense | 102 | 64 | 33 | 5 | 62.8% |
| Four Knights Game | 88 | 51 | 24 | 13 | 58.0% |
| Sicilian Defense: Taimanov Variation, American Attack | 84 | 45 | 26 | 13 | 53.6% |
| Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | 81 | 52 | 19 | 10 | 64.2% |
| English Opening: Agincourt Defense | 71 | 37 | 28 | 6 | 52.1% |
| Modern | 58 | 38 | 17 | 3 | 65.5% |
| Sicilian Defense | 52 | 30 | 20 | 2 | 57.7% |
| QGA: 3.e3 c5 | 50 | 28 | 16 | 6 | 56.0% |
| Rapid Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Four Knights Game | 40 | 29 | 6 | 5 | 72.5% |
| Caro-Kann Defense | 39 | 29 | 6 | 4 | 74.4% |
| Sicilian Defense: Closed | 35 | 29 | 3 | 3 | 82.9% |
| Sicilian Defense: Alapin Variation | 28 | 20 | 3 | 5 | 71.4% |
| Sicilian Defense: Taimanov Variation, American Attack | 27 | 18 | 7 | 2 | 66.7% |
| QGA: 3.e3 c5 | 24 | 22 | 1 | 1 | 91.7% |
| Scandinavian Defense | 20 | 19 | 1 | 0 | 95.0% |
| Sicilian Defense: Nyezhmetdinov-Rossolimo Attack, Fianchetto Variation | 19 | 10 | 7 | 2 | 52.6% |
| Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line | 17 | 11 | 2 | 4 | 64.7% |
| Amazon Attack | 17 | 14 | 1 | 2 | 82.3% |
| Daily Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Scotch Game | 3 | 2 | 1 | 0 | 66.7% |
| Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line | 2 | 1 | 1 | 0 | 50.0% |
| French Defense: Advance Variation | 2 | 2 | 0 | 0 | 100.0% |
| Barnes Defense | 1 | 1 | 0 | 0 | 100.0% |
| French Defense | 1 | 1 | 0 | 0 | 100.0% |
| Alekhine Defense | 1 | 1 | 0 | 0 | 100.0% |
| Bird Opening: Dutch Variation, Batavo Gambit | 1 | 1 | 0 | 0 | 100.0% |
| English Opening | 1 | 0 | 0 | 1 | 0.0% |
| Australian Defense | 1 | 0 | 1 | 0 | 0.0% |
| Nimzo-Indian Defense: Three Knights Variation, Duchamp Variation | 1 | 0 | 1 | 0 | 0.0% |
🔥 Streaks
| Streak | Longest | Current |
|---|---|---|
| Winning | 22 | 0 |
| Losing | 7 | 2 |