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.