Avatar of Sonia Zepeda

Sonia Zepeda WIM

Username: Sonnyzc

Playing Since: 2009-11-15 (Active)

Wow Factor: ♟♟♟♟♟♟

Chess.com

Daily: 995
6W / 0L / 0D
Rapid: 2102
2W / 0L / 0D
Blitz: 2075
602W / 429L / 52D
Bullet: 1765
437W / 328L / 33D

Sonia Zepeda - Woman International Master (WIM)

Meet Sonia Zepeda, a chess virtuoso with the official title of Woman International Master granted by FIDE. Often known online by the moniker Sonnyzc, Sonia has been dazzling opponents with her strategic genius since at least 2009, climbing Blitz ratings from a modest 1538 to a peak around 2153 in 2020. Not one to limit her talents, Sonia has also shown prowess in Bullet, Rapid, and Daily chess formats, with a particular flair for Blitz games where her win rate stands impressively over 56%.

With a longest winning streak of 11 games and an amazing 100% win rate in Daily and Rapid chess (albeit on fewer games), Sonia proves she can play patiently or lightning-fast, depending on the mood—and the opponent. Her psychological resilience is almost legendary, boasting a comeback rate of nearly 90% and a perfect win record after losing a piece. Clearly, Sonia's motto is "Never give up, or at least never before you've staged a dramatic comeback."

She's a broad daylight gladiator too—her games often average 70+ moves when winning, showing that she’s in it for the long haul, carefully outmaneuvering foes in epic endgames over 83% of the time. Quick to resign only 0.69% of the time (that's less than once per hundred games, thank you very much), Sonia’s endurance matches her brilliance.

Offline or online, you might catch her playing late at night – around 7am and noon, two times of day where her win rate humorously hits 100%. Maybe she’s had her coffee, or maybe she’s just a magical chess ninja who thrives in the odd hours.

Opponents beware: whether it’s Blitz, Bullet, or Rapid, Sonia Zepeda brings a blend of tenacity, tactical sharpness, and a dash of fun to the board. And if you lose to her, it might just be because she’s secretly a chess wizard disguised as a humble player—or because she studied her opponent’s weaknesses to an almost comical degree.

In short: if you see Sonnyzc challenging you, prepare for a fierce battle of wits—Sonia plays like someone who could checkmate you in your sleep.


Coach's Avatar

Performance Feedback for Sonia Zepeda

Hi Sonia! I’ve reviewed some of your most recent games and here are some constructive points to help you improve further:

Strengths:

  • Opening Knowledge: Your understanding of openings like the Queen's Gambit Declined and Italian Game is solid. You develop pieces efficiently and castle on time, ensuring king safety early on.
  • Active Piece Play: You look for active squares and try to create threats, especially with knights and bishops. Moves like Ng5 attacking key squares and timely exchanges show good tactical awareness.
  • Central Control: You consistently strive for control of the center with pawns and pieces, crucial for gaining space and maneuvering options.

Areas for Improvement:

  • Endgame Technique: In some of your games, winning positions slipped away or your opponent managed to hold on longer than ideal. Working on fundamental endgames (king and pawn, rook endgames) can help convert advantages more reliably.
  • Time Management: While you generally maintain a healthy clock, a few games showed a bit of rush in critical moments. Try to balance thinking time so key tactical or strategic decisions are given enough attention.
  • Pawn Structure Considerations: Pay close attention to pawn breaks and when to trade pawns, especially around the center and on the flanks. Slight inaccuracies here sometimes give opponents counterplay that could be minimized.
  • Calculation Under Pressure: Some losses involved letting the opponent seize the initiative with sharp tactics. Consistent tactical training and visualization exercises will help you spot threats earlier and increase your defensive resilience.

Suggestions:

  • Review your recent wins and losses to identify recurring patterns in mistakes or missed opportunities.
  • Focus on practicing endgames, for example with simplified material positions, as this will improve your confidence in closing out games.
  • Work on visualization exercises such as solving tactical puzzles and blindfold calculations to sharpen your foresight during complex scenarios.
  • Consider experimenting with different openings or deeper lines in your main repertoire to gain a strategic edge and familiarity.

Keep up the great work and continue learning from every game. Your passion and effort are evident, and with focused practice, you will see your rating and gameplay climb steadily.

Happy playing and learning!



🆚 Opponent Insights

Recent Opponents
matador2507 1W / 0L / 0D
coldplaybullet 0W / 1L / 0D
ssj2207 1W / 0L / 0D
tryandmateme 1W / 0L / 0D
reclimb 1W / 0L / 0D
darwincantu 0W / 1L / 0D
marlonocho 1W / 0L / 0D
sealtiel4u 0W / 1L / 0D
dengmrefu 1W / 0L / 0D
krabin12 1W / 0L / 0D
Most Played Opponents
artiga931 17W / 0L / 0D
rafaelzepeda 4W / 1L / 0D
Jorge Ernesto Giron 2W / 1L / 1D
reiguitar 3W / 1L / 0D
tritter88 1W / 3L / 0D

Rating

Year Bullet Blitz Rapid Daily
2025 1765 2075
2024 1589 1891
2023 1901 894
2022 1975 768
2021 1866 2004
2020 1962 1994 2102 744
2009 1724
Rating by Year20092020202120222023202420252075744YearRatingBulletBlitzDaily

Stats by Year

Year White Black Moves
2025 236W / 165L / 17D 227W / 179L / 18D 74.0
2024 13W / 14L / 0D 9W / 16L / 1D 74.7
2023 4W / 2L / 0D 4W / 2L / 0D 51.2
2022 5W / 0L / 0D 4W / 2L / 0D 59.9
2021 32W / 23L / 1D 28W / 22L / 1D 73.7
2020 268W / 151L / 23D 235W / 183L / 24D 76.2
2009 1W / 0L / 0D 1W / 0L / 0D 58.5

Openings: Most Played

Bullet Opening Games Wins Losses Draws Win Rate
French Defense 61 38 22 1 62.3%
Sicilian Defense 58 41 17 0 70.7%
Scandinavian Defense 52 29 18 5 55.8%
Amar Gambit 51 31 19 1 60.8%
Sicilian Defense: Closed 33 14 14 5 42.4%
Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line 30 18 12 0 60.0%
Sicilian Defense: Classical Variation 28 16 10 2 57.1%
Bird Opening: Dutch Variation, Batavo Gambit 26 13 11 2 50.0%
Italian Game: Two Knights Defense 25 16 6 3 64.0%
Caro-Kann Defense: Exchange Variation 24 10 14 0 41.7%
Blitz Opening Games Wins Losses Draws Win Rate
French Defense 63 38 21 4 60.3%
Sicilian Defense 62 32 28 2 51.6%
Sicilian Defense: Closed 50 30 16 4 60.0%
Italian Game: Two Knights Defense 47 29 17 1 61.7%
QGD: 3.Nc3 Bb4 45 24 18 3 53.3%
Sicilian Defense: Alapin Variation 43 22 19 2 51.2%
Sicilian Defense: Classical Variation 40 24 12 4 60.0%
Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line 38 20 17 1 52.6%
London System: Poisoned Pawn Variation 37 19 16 2 51.4%
Sicilian Defense: Alapin Variation, Sherzer Variation 36 24 12 0 66.7%
Rapid Opening Games Wins Losses Draws Win Rate
Italian Game: Two Knights Defense 1 1 0 0 100.0%
Bird Opening: Dutch Variation, Batavo Gambit 1 1 0 0 100.0%

🔥 Streaks

Streak Longest Current
Winning 11 1
Losing 8 0