Player Profile: Zeljko678
Since starting to compete on Chess.com in 2020, Zeljko678 has shown a remarkable passion for blitz, logging tens of thousands of matchups. His Blitz rating history is impressive, peaking at 2538 in 2025, and rarely dipping below 1352 since he began. Over the years, he has played in excess of 22,000 total blitz games, accumulating 10,798 wins, 9,147 losses, and 2,782 draws.
Although he has dabbled in Rapid on rare occasions—just two games, both won—blitz has been his true focus. Across these seasons, he has posted steady improvements in his rating, often averaging around the 2300–2400 threshold. He reached his personal best in Blitz (2538) in 2025, demonstrating continuous growth and dedication.
Known for his strong preference for solid defenses and ambitious openings, Zeljko678 favors the Caro-Kann, Slav, and Kings Indian Defense setups in blitz. He has, for example, battled through more than 500 Caro-Kann games, over 700 Slav, and nearly 1,500 Kings Indian Samisch Steiner Attack showdowns, often embracing dynamic pawn pushes and intricate strategical lines. Notably, his performance in lines such as the Caro-Kann or the Kings Indian Samisch has hovered around or above the 50% win mark, reflecting both his fighting spirit and willingness to navigate complex middlegames.
Statistically, Zeljko678 displays a high endgame frequency (over 84%), coupled with a strong “comeback rate,” indicating he is rarely out of a game even when down material. He has also established a longest winning streak of 14 consecutive victories, revealing that when on form, he can be formidable for any opponent. His tilt factor remains modest, suggesting resilience even after challenging losses.
While his winning percentages vary slightly depending on the day—and his results suggest different playing strengths at different hours—he remains a determined attacker throughout the week, constantly scanning the board for tactical shots and endgame conversions. If you encounter Zeljko678 in a blitz arena, expect a battle of wits marked by perseverance and a keen sense of momentum.
Strong points in your rapid games
You show clear willingness to fight for active play, especially in the Caro-Kann structures you favor. You think in terms of piece activity and are comfortable converting advantages when you gain space or seize initiative in the middlegame. Your openings indicate a solid, resilient approach and a readiness to simplify into favorable endgames when ahead.
- Initiative and pressure in the middlegame when you find active piece coordination.
- Consistency with a solid opening choice (Caro-Kann) that leads to clean, reachable middlegames.
- Ability to convert advantages from balanced or slightly worse positions into a win in some games.
Areas to improve
- Time management in fast time controls: allocate a bit more time to critical middlegame decisions to avoid rushing into risky captures or unclear plans.
- Depth of calculation in tactical moments: double-check for counterplay before committing to forcing lines, especially when material is equal or you are pursuing an initiative.
- Structural awareness after exchanges: watch for pawn structure changes that leave weak squares or target pawns; aim to keep your king relatively safe and your pawn skeleton sound.
- Endgame technique: practice common rook endgames and simple king-and-pawn endings so you can convert or hold wins more reliably.
- Opening diversification: continue refining the Caro-Kann repertoire but also prepare a flexible plan against a few common White responses to avoid getting surprised after early deviations.
Targeted training plan
To build on your current level, try this focused two-week plan. It emphasizes the openings you use, as well as practical endgames and calculation discipline.
- Daily tactics: 15–20 minutes of focused puzzle work, emphasizing pattern recognition for forks, pins, and discovered attacks that occur in the Caro-Kann structures you often reach.
- Opening study: 2–3 short sessions per week to deepen your understanding of the Caro-Kann Defense and the Exchange Variation, plus a light review of the QGD ideas you’ve encountered.
- Game analysis: review at least 2 of your recent rapid games per week (one win and one loss), noting the turning points and what you would do differently next time.
- Endgame practice: 2 short sessions (10–15 minutes) focusing on rook endings and king-pawn endings to improve conversion and defense in real games.
- Time-management drills: in practice games, set a target time per move (e.g., 1 minute for the first 20 moves) and stick to it to build consistent pace in real games.
Opening guidance and adjustments
Your Caro-Kann results show it is a strong and reliable weapon for you. Keep using it as your main toolkit, but also prepare a plan for the Exchange Variation against certain White setups to handle dynamic and imbalanced positions. The QGD-related line you used indicates you can handle solid, strategic games too, which is a good complementary option if you want to diversify.
- Practice typical pawn structures from Caro-Kann games (especially the central pawn chain and how Black supports it) so you can anticipate common plans for both sides.
- Study the Exchange Variation concepts where Black trades into an open game with chances on the queenside, to avoid feeling squeezed in these lines.
- When using the QGD approach, reinforce patience in the buildup and look for timely breaks rather than rushing to activate pieces.
Quick practical drills
- Do 3–4 tactical puzzles a few times per week that reflect typical motifs in your openings (forks, overloading, and piece coordination in Caro-Kann structures).
- Analyze one winning and one losing game each week with emphasis on critical moments and alternative safe continuations.
- Practice at least one rook endgame per week to strengthen endgame conversion and defensive technique.
- Keep a simple move-checklist during games: king safety, development, central control, and a concrete plan before trading pieces.
Personalized note
If you’d like, I can tailor this plan to your playing style and opponents. See your profile for a quick overview and to share any specific goals you have for the next couple of months. Zeljko678
🆚 Opponent Insights
| Recent Opponents | ||
|---|---|---|
| rafailovv | 1W / 0L / 0D | View |
| chess_needs_an_uupdate | 3W / 4L / 3D | View |
| henry940622 | 2W / 2L / 0D | View |
| hayrettin | 1W / 0L / 0D | View |
| savoryclass | 0W / 1L / 0D | View |
| Milan Franic | 8W / 17L / 5D | View |
| george13pi | 1W / 0L / 1D | View |
| vinnythegreat5555 | 1W / 0L / 0D | View |
| raul31085 | 9W / 19L / 9D | View |
| kralevsk | 1W / 0L / 0D | View |
| Most Played Opponents | ||
|---|---|---|
| Tom Borvander | 79W / 48L / 15D | View Games |
| aflatunmamedov | 54W / 52L / 25D | View Games |
| romanakopov | 38W / 49L / 22D | View Games |
| Zvonko Stanojoski | 21W / 49L / 8D | View Games |
| epolkovnikov | 36W / 33L / 9D | View Games |
Rating
| Year | Bullet | Blitz | Rapid | Daily |
|---|---|---|---|---|
| 2025 | 2457 | 1431 | ||
| 2024 | 2339 | |||
| 2023 | 2334 | |||
| 2022 | 2223 | |||
| 2021 | 2267 | 1487 | ||
| 2020 | 2295 | 1357 |
Stats by Year
| Year | White | Black | Moves |
|---|---|---|---|
| 2025 | 615W / 471L / 180D | 537W / 581L / 165D | 80.5 |
| 2024 | 768W / 660L / 211D | 696W / 728L / 208D | 79.8 |
| 2023 | 1034W / 819L / 264D | 889W / 961L / 267D | 80.1 |
| 2022 | 812W / 677L / 217D | 711W / 757L / 222D | 79.2 |
| 2021 | 1663W / 893L / 322D | 1511W / 1032L / 342D | 78.8 |
| 2020 | 1331W / 1123L / 297D | 1129W / 1257L / 360D | 79.9 |
Openings: Most Played
| Blitz Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Caro-Kann Defense | 2373 | 1127 | 1013 | 233 | 47.5% |
| King's Indian Defense: Sämisch Variation, Bobotsov-Korchnoi-Petrosian Variation | 1709 | 962 | 616 | 131 | 56.3% |
| Caro-Kann Defense: Classical Variation | 1392 | 591 | 598 | 203 | 42.5% |
| Slav Defense | 963 | 510 | 316 | 137 | 53.0% |
| Nimzo-Indian Defense: Classical Variation | 940 | 421 | 381 | 138 | 44.8% |
| Caro-Kann Defense: Exchange Variation | 749 | 358 | 300 | 91 | 47.8% |
| Döry Defense | 700 | 283 | 305 | 112 | 40.4% |
| Benko Gambit | 666 | 317 | 278 | 71 | 47.6% |
| QGD: Exchange, 5.Bg5 c6 6.Qc2 g6 | 606 | 290 | 224 | 92 | 47.9% |
| Australian Defense | 587 | 276 | 244 | 67 | 47.0% |
| Rapid Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Caro-Kann Defense | 2 | 2 | 0 | 0 | 100.0% |
| Caro-Kann Defense: Exchange Variation | 1 | 0 | 1 | 0 | 0.0% |
| QGD: 3.Nc3 Nf6 4.e3 | 1 | 1 | 0 | 0 | 100.0% |
🔥 Streaks
| Streak | Longest | Current |
|---|---|---|
| Winning | 14 | 4 |
| Losing | 9 | 0 |