Avatar of Jacek Stopa

Jacek Stopa GM

Username: jstopa4

Location: El Cerrito

Playing Since: 2022-01-26 (Active)

Wow Factor: ♟♟♟♟

Chess.com

Daily: 2125
239W / 70L / 47D
Rapid: 2347
6W / 2L / 1D
Blitz: 2894
1551W / 1704L / 462D

Grandmaster Jacek Stopa (jstopa4)

Born to conquer 64 squares, Jacek Stopa is a chess Grandmaster whose strategic prowess and tactical awareness make him a formidable opponent both online and over the board. Known by the username jstopa4, Jacek has earned his stripes through countless battles on the digital battlefield, boasting a peak blitz rating soaring as high as 2845, a rapid peak of 2351, and a daily chess high of 2126. Not bad for a player who clearly thinks three moves ahead (and sometimes even sneaks in a fourth).

Chess Style & Statistics

Jacek's style is a blend of patience and relentless pressure, with an impressive average of over 80 moves per game — proving that he doesn’t give up early and enjoys the long haul to victory. His endgame frequency clocks in at a staggering 82.56%, showing off his mastery in turning even the tiniest advantages into wins.
Despite the long battles, early resignations are rare — only 0.63% of his games — which means Jacek fights hard and rarely throws in the towel unless checkmate is imminent.
He's a comeback king too, enjoying an 85.61% rate of rallying after a setback, and manages a respectable ~45% win rate even after losing a piece. Clearly, dropping a pawn or knight is only a minor hiccup for this tactician.

Recent Form & Memorable Battles

Recent months have seen Jacek pushing his daily rating above 2000, and his blitz performances keep the adrenaline pumping with fierce competition — including an epic winning streak of 55 games that would intimidate even the calmest opponents. Though he’s experienced some ups and downs (including a challenging losing streak of 27 games), his fighting spirit shines through.
A notable recent victory came against JoopElderhorst, where Jacek's use of the Trompowsky Attack (Raptor Variation) led to a neat resignation win — a game where his patience and tactical sharpness left no room for error. On the flip side, even legends lose sometimes, as seen in a hard-fought loss against the same opponent in a close English Opening battle.
If chess were a TV show, Jacek's games would be the thrilling episode that keeps you on the edge of your seat — with plenty of twists, turns, and jaw-dropping moves.

Opening Repertoire & Opponent Insights

When it comes to openings, Jacek keeps a few surprises up his sleeve — often classified under the mysterious "Top Secret" category where he commands an impressive 73% win rate in daily games. He also enjoys aggressive lines like the Caro-Kann Panov Attack and sharp counters such as the Trompowsky Attack.
His practice against frequent rivals like maitreia, shadowking71, and mops_2004 shows a balanced mix of wins and tough battles, proving that every arena offers a new challenge to test his skills.

Fun Facts

  • Best time to challenge Jacek: Early morning around 7 AM — apparently, that's when his brain kicks into grandmaster mode.
  • Longest winning streak: A whopping 55 consecutive wins. Maybe he drinks a secret chess potion?
  • Tilt factor: Low enough at 27 to say he probably doesn’t flip his board after a loss... much.
  • Win rates by color: White pieces win ~49.4%, Black pieces win ~46.1% — proving he's comfortable no matter which side of the board he’s on.

In summary, whether you're facing him online or analyzing his long and tactical games, Jacek Stopa is a chess force to be reckoned with — a true grandmaster of the 21st century who blends grit, grace, and a little bit of secret sauce on every move.


Coach's Avatar

Recent Performance Overview

Jacek, your recent games show a strong winning streak in various openings such as the Amar Gambit, Caro-Kann Defense, and the Queen's Gambit Accepted variations. Your ability to secure wins with these openings illustrates solid opening preparation and effective execution in rapid games.

Your recent rating progress is impressive, with a significant rating increase over the last months, showing consistent improvement and learning.

Strengths to Keep Developing

  • Opening Preparation: You have a 100% win rate with aggressive and classical openings like the Amar Gambit and Caro-Kann. Continue refining your repertoires in these systems, focusing on understanding typical tactical and strategic ideas.
  • Attacking Play: Many of your wins involved sharp attacking moves and direct threats, showing good calculation skills. Keep practicing calculation and spotting forcing moves early.
  • Consistent Improvement: Your continuous rating gains show dedication. Maintain study habits that focus on reviewing your games and learning from mistakes.

Areas for Improvement

  • Handling Defensive and Positional Play: Your losses came in openings like the Bogo-Indian Defense and Queen's Gambit lines where positional understanding and patience are important. Focus on deepening your understanding of pawn structures and piece coordination in these positions.
  • Endgame Technique: While your attacking is strong, practicing basic and intermediate endgames can improve your ability to convert slight advantages and save difficult positions.
  • Time Management: In rapid games, balancing speed and accuracy is crucial. Review your games for moments where time pressure may have led to inaccuracies and work on managing your clock better.

Next Steps for Continued Growth

  • Review your losses carefully, especially the games with the Bogo-Indian Defense and other openings where you have negative results. Identify recurring tactical or strategic mistakes.
  • Incorporate focused endgame study into your training routine, including common endgame scenarios relevant to your openings.
  • Explore resources and puzzles that emphasize positional play and defensive techniques to build resilience in tense middle games.
  • Analyze your opening choices regularly and consider expanding your repertoire with solid options to increase flexibility against different opponents.
  • Play training games with a focus on applying these improvements and review them to reinforce learning.

Summary

Your recent performance shows excellent progress, especially in dynamic and attacking openings. By adding depth to your positional understanding and endgame knowledge, alongside better time control management, you will continue to elevate your rapid play results.

Keep building on your strengths while addressing these targeted areas for improvement — you are on a great path!



🆚 Opponent Insights

Most Played Opponents
James Chirilov 19W / 20L / 4D
Tamaz Mgeladze 22W / 13L / 8D
mops_2004 18W / 17L / 7D
Alexander Rustemov 6W / 27L / 6D
Vjacheslav Weetik 15W / 19L / 2D

Rating

Year Bullet Blitz Rapid Daily
2025 2894 2100
2024 2793 2347 1982
2023 2719
2022 1358
Rating by Year202220232024202528941358YearRatingBlitzRapidDaily

Stats by Year

Year White Black Moves
2025 215W / 65L / 30D 194W / 86L / 37D 72.0
2024 855W / 755L / 239D 795W / 857L / 210D 86.5
2023 29W / 30L / 5D 33W / 24L / 6D 88.2
2022 3W / 0L / 0D 3W / 0L / 0D 53.8

Openings: Most Played

Daily Opening Games Wins Losses Draws Win Rate
Sicilian Defense 26 19 5 2 73.1%
Amazon Attack: Siberian Attack 15 11 2 2 73.3%
Sicilian Defense: Alapin Variation 12 5 5 2 41.7%
Scotch Game 10 7 2 1 70.0%
Dutch Defense 8 2 6 0 25.0%
Sicilian Defense: Dragon Variation, Yugoslav Attack 8 5 2 1 62.5%
Sicilian Defense: Moscow Variation, Haag Gambit 8 4 1 3 50.0%
London System: Poisoned Pawn Variation 8 5 2 1 62.5%
Slav Defense: Bonet Gambit 8 6 1 1 75.0%
Caro-Kann Defense 7 1 3 3 14.3%
Blitz Opening Games Wins Losses Draws Win Rate
Sicilian Defense: Dragon Variation, Yugoslav Attack 204 78 110 16 38.2%
Amar Gambit 131 98 23 10 74.8%
Amazon Attack: Siberian Attack 128 55 61 12 43.0%
Diemer-Duhm Gambit (DDG): 4...f5 125 54 51 20 43.2%
Amazon Attack 119 68 37 14 57.1%
King's Indian Defense: Sämisch Variation, Bobotsov-Korchnoi-Petrosian Variation 118 57 52 9 48.3%
Sicilian Defense 109 54 45 10 49.5%
Bogo-Indian Defense 103 54 35 14 52.4%
Sicilian Defense: Dragon Variation 96 41 43 12 42.7%
Slav Defense: Bonet Gambit 70 36 23 11 51.4%
Rapid Opening Games Wins Losses Draws Win Rate
Amar Gambit 2 2 0 0 100.0%
Bogo-Indian Defense 1 0 1 0 0.0%
Sicilian Defense: Chekhover Variation 1 0 0 1 0.0%
QGA: 3.Nf3 Bg4 1 0 1 0 0.0%
QGD: 2...Bf5 3.cxd5 1 1 0 0 100.0%
Caro-Kann Defense 1 1 0 0 100.0%
QGA: 3.e3 c5 1 1 0 0 100.0%
English Opening: Anglo-Indian Defense 1 1 0 0 100.0%

🔥 Streaks

Streak Longest Current
Winning 55 6
Losing 27 0