Avatar of Anna Jakubowska

Anna Jakubowska WIM

Username: AniJak

Playing Since: 2014-02-01 (Active)

Wow Factor: ♟♟♟♟♟♟

Chess.com

Rapid: 2281
16W / 7L / 3D
Blitz: 2506
1412W / 1265L / 299D
Bullet: 2417
666W / 479L / 110D

Anna Jakubowska (AniJak)

Woman International Master (WIM)

Anna Jakubowska, known in the online chess world as AniJak, is a formidable Woman International Master with a talent for making pawns dance and kings tremble. Her journey through the ranks has been marked by blazing bullet games, tactical brilliance in blitz, and steady performances in rapid chess.

Rating Highlights

  • Bullet peak rating of 2446 in 2023, showing lightning-fast decision-making skills.
  • Blitz peak rating of 2476 in 2025, proving her mettle in intense, rapid-fire battles.
  • Rapid max rating of 2285, a testament to her versatile style and adaptability.

Gaming Style & Stats

With an impressive longest winning streak of 12 games and a current streak of 2 wins, Anna combines patience with opportunistic strikes. She tends to love endgames—as evidenced by an endgame frequency of 78%, turning sometimes seemingly drawn positions into exciting victories.

Her average moves per win flirt around 71, which means her wins often come after great strategical battles. But, don't think she’s just a slow burner; her comeback rate of over 84% and a staggering win rate after losing a piece of nearly 92% show she's a master of resilience and calculating chaos.

Records & Rivalries

Anna has faced quite a few opponents multiple times, notably shymek (49 games) and zabacharlli and perunbarglowski (17 games each). Her chess diary is filled with tales of stunning comebacks, narrow losses, and friendly rivalries. Interestingly, her win rate varies wildly against different usernames, ranging from perfect scores against some to challenging battles against others, reflecting the unpredictable nature of chess and her readiness to face anyone at the board.

When Does She Play?

Preferred game time? Evening hours, especially 11 PM where her winning rate peaks at 62.5%, suggesting perhaps a night owl who thrives when others are winding down.

Fun Facts

  • Anna’s early resignation rate is modest at 9.74%, so she’s not one to quit just because of a sneaky fork.
  • White pieces give her a slight edge with a 52.37% win rate, but black pieces are no obstacle either (46.27%).
  • If you capture a piece, beware — she wins almost 92% of the time even after losing material.
  • Her psychological tilt factor is low (9), meaning she keeps a cool head even after tough games—unlike some of us who just want to flip a board.

In short, Anna Jakubowska is a chess warrior who knows how to blend speed, skill, and grit to master the 64 squares, making her a fierce competitor and an inspiration to up-and-coming chess enthusiasts everywhere. Play against her — but don’t say you weren’t warned!


Coach's Avatar

What Anna does well in blitz

Anna shows a readiness to fight for dynamic, tactical positions. In openings that lead to sharp, active play, you maintain pressure and keep options open for creating threats. You also demonstrate resilience in complicated middlegames and the ability to convert opportunities when your opponent overreaches. In blitz, having a willingness to take the initiative and seek tactical chances is a strong asset.

Key areas to improve

  • Endgame technique: work on converting advantages and finishing off games cleanly. Focus on rook endings and simple king-and-pawn endings to improve consistency when material is balanced or you’re ahead.
  • Time management: in blitz, early time pressure can lead to mistakes. Practice keeping a modest pace in the first 15 moves and reserve time for critical decisions later in the game. Develop a routine to quickly scan for threats after each move.
  • Tactical vigilance: ensure you pause to verify tactics before making forcing moves. A quick two-step check after a complex tactic (threats on your king, material dynamics, and counterplay) can prevent costly blunders.
  • Opening repertoire consolidation: you perform well in several sharp lines, but occasional uncertainty from unfamiliar continuations can lead to uncomfortable middlegames. Narrow your opening choices to 2–3 solid lines and study the typical middlegame plans and pawn structures that arise in them.
  • Post-game review habit: after each blitz session, review 1–2 critical moments from each game. Note the turning points and consider alternatives you could have played more accurately under time pressure.

Opening performance highlights

Based on your openings data, some patterns stand out. Here are a few takeaways you can use to guide practice in blitz:

  • Sicilian Defense: Closed (White or Black) shows a healthy activity level and a win rate around 52%. This suggests you’re comfortable navigating sharp, dynamic positions; continue refining the typical middlegame plans from this line.
  • Alekhine Defense: about 119 games with a win rate around 54.6%. This indicates you perform well in unbalancing, tactical structures—keep building a crisp in-hand sense for these positions.
  • Unknown openings: a broad category with roughly 50.7% win rate. This often corresponds to unfamiliar lines or less defined repertoires. Consider standardizing 2–3 reliable lines to reduce uncertainty in blitz.
  • Caro-Kann Defense and other solid lines generally show lower win rates in this sample. If you want steadier results, you might pair 1) a sharp, tactical option (like Sicilian Closed or Alekhine) and 2) a solid, solid-sounding alternative to switch gears when the position asks for quieter play.
  • Other named lines (Vienna Gambit, Dutch, Colle variations, etc.) show mixed results. Use these as occasional bets rather than your primary blitz weapons until you’re confident with their main tactical motifs and typical endgames.

Practice plan for the coming weeks

  • Deepen 2–3 core openings: pick Sicilian Defense: Closed and Alekhine Defense as Black, plus one reliable White system (such as English or Colle) and study their typical middlegame plans for 15–25 moves.
  • Daily tactics: complete 15–20 minutes of tactical puzzles to sharpen calculation under time pressure, focusing on motifs that frequently appear in your chosen openings.
  • Endgame drills: dedicate 2 sessions per week to rook endings and king-and-pawn endings to improve conversion in the blitz finish.
  • Post-game review: after each practice block, review at least 1–2 blitz games to identify the main blunders or missed opportunities and write down 1-2 improvements to apply next time.
  • Blitz simulation: schedule 1 focused blitz session per week where you practice 5–10 games with a fixed time control and a specific plan for early middlegame transitions (e.g., aim for a sharp middlegame in 15 moves, then test endgame technique).

Tips to apply in your next games

  • At the start of a game, commit to a pace that allows you to decide on the first 12–15 moves with enough clarity before time pressure mounts.
  • When you sense you’re entering a tactical melee, pause for a moment to check for immediate threats to your own king and material balance before committing to a sequence.
  • Use a concise “threat-check” rule after every capture: what can my opponent do next, and is there a forcing line I should be aware of?
  • Keep a short repertoire cheat sheet for your 2–3 main openings so you can recognize standard ideas quickly and avoid getting bogged down in unfamiliar lines.

Next steps

If you’d like, I can tailor a personalized, two-week or four-week study plan based on your current openings performance and your rating trend. I can also create a simple, printable one-page opening and endgame checklist to use during blitz sessions.



🆚 Opponent Insights

Recent Opponents
Chike Aniunoh 0W / 1L / 0D
Pavel Sevostianov 1W / 0L / 0D
Petar Djuric 1W / 2L / 2D
Mykhailo Shinkarev 0W / 2L / 0D
Michael Mahoney 1W / 0L / 0D
ugetting 2W / 1L / 0D
sinpodersalir 0W / 0L / 1D
dr_chessko 1W / 0L / 0D
qqmar 3W / 0L / 0D
hallohejhei 1W / 0L / 0D
Most Played Opponents
shymek 18W / 29L / 2D
perunbarglowski 8W / 9L / 0D
zabacharlli 11W / 6L / 0D
violin7 7W / 7L / 1D
polandhussars 5W / 7L / 1D

Rating

Year Bullet Blitz Rapid Daily
2025 2417 2506 2281 400
2024 2317 2377 2281
2023 2446 2356 2285
2022 2373 2358 2208
2021 2243 2273
2020 2294 2354 2026
2019 2173 2198 1314
Rating by Year201920202021202220232024202525061314YearRatingBulletBlitzRapid

Stats by Year

Year White Black Moves
2025 38W / 34L / 7D 45W / 27L / 6D 80.0
2024 65W / 76L / 19D 68W / 77L / 14D 79.9
2023 172W / 127L / 24D 154W / 148L / 32D 83.6
2022 109W / 97L / 21D 99W / 117L / 20D 81.9
2021 167W / 150L / 31D 148W / 170L / 39D 81.9
2020 661W / 420L / 101D 567W / 497L / 102D 68.8
2019 12W / 8L / 2D 13W / 8L / 2D 76.9

Openings: Most Played

Bullet Opening Games Wins Losses Draws Win Rate
Sicilian Defense: Closed 149 78 59 12 52.4%
Caro-Kann Defense 141 72 61 8 51.1%
Alekhine Defense 122 67 45 10 54.9%
Vienna Gambit, with Max Lange Defense 69 31 24 14 44.9%
Dutch Defense 59 29 28 2 49.1%
Scandinavian Defense 51 22 20 9 43.1%
Colle System: Rhamphorhynchus Variation 50 26 17 7 52.0%
Czech Defense 48 23 21 4 47.9%
Amar Gambit 46 26 19 1 56.5%
English Opening 28 12 14 2 42.9%
Blitz Opening Games Wins Losses Draws Win Rate
Sicilian Defense: Closed 383 200 145 38 52.2%
Caro-Kann Defense 375 167 174 34 44.5%
Unknown 373 189 179 5 50.7%
Alekhine Defense 119 65 44 10 54.6%
Vienna Gambit, with Max Lange Defense 104 50 44 10 48.1%
Dutch Defense 101 44 43 14 43.6%
Colle System: Rhamphorhynchus Variation 94 35 49 10 37.2%
Czech Defense 81 37 37 7 45.7%
Caro-Kann Defense: Exchange Variation 80 35 38 7 43.8%
Bishop's Opening: Horwitz Gambit 77 37 32 8 48.0%
Daily Opening Games Wins Losses Draws Win Rate
Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line 1 1 0 0 100.0%

🔥 Streaks

Streak Longest Current
Winning 12 0
Losing 9 0