Federico Gonzalez Gastellú (MiamiShark) — Chess Biography
Federico Gonzalez Gastellú, better known online as MiamiShark, is a National Master with a reputation for ferocious Bullet play and a taste for sharp, tactical positions. A Bullet specialist by preference, he blends speed, pattern recognition and a mischievous sense of risk — the kind of player who'll flag you after an improbable fork and then apologize with a grin in the chat.
Career snapshot
Quick facts and career highlights that define MiamiShark’s chess identity.
- Title: National Master (National)
- Preferred time control: Bullet — fast, furious, and highly effective
- Remarkable consistency: tens of thousands of games across Bullet and Blitz, with particularly vast experience online
- Peak performances (selected): 2377 (2016-03-12) and 2434 (2022-07-08) — milestones worth a celebratory emoji (or three)
- Notable longevity: active, high-volume play from 2011 through 2025 and beyond
Playing style & strengths
What makes Federico click at the board — and on the clock.
- Speed chess virtuoso: exceptionally high endgame frequency and long average decisive games (players beware: this one likes to grind)
- Tactical awareness: strong comeback ability and a >65% win rate after losing material in many formats (ComebackRate ~79%, WinRateAfterLosingPiece ~65.6%)
- White & Black comfort: plays confidently with either color (White win-rate ~70.8%, Black win-rate ~65.6%)
- Psychology: modest tilt factor — still human, still feisty; best time of day noted around 08:00 but plenty of peak hours across the board
- Stamina and volume: thousands of Bullet wins suggest an iron constitution for repeat high-pressure finishes
Repertoire & favorite openings
Federico’s toolkit favors reliable, practical lines that thrive in fast time controls. Fluent in several French and Sicilian structures, and famously fond of the eccentric Dresden Opening (The Goblin).
- French Defense: Exchange Variation — a go-to with great results (French Defense: Exchange Variation)
- French Defense: Classical / Svenonius Variation (French Defense: Classical Variation, Svenonius Variation)
- Dresden Opening: The Goblin — high win-rate specialist line (Dresden Opening: The Goblin)
- Sicilian Defense: Alapin Variation and broader Sicilian ideas (Sicilian Defense: Alapin Variation)
- Caro-Kann, Scandinavian and other solid defenses for reliable results under time pressure (Caro-Kann Defense / Scandinavian Defense)
Stats speak: many of these lines show win rates north of 70% in Bullet play — a signature of deep familiarity and practical speed.
Memorable streaks & trends
- Longest winning streak: 38 games — a run that would make any coffee machine nervous
- Longest losing streak: 10 games — even sharks get a slow week
- Current streaks (recent snapshot): short losing skid of 3 games — nothing a focused session and a playlist can’t fix
- Time-of-day strength: especially dangerous in early morning and late evening hours (several high-win hours in the dataset)
Sample game (Bullet-style sketch)
A short, illustrative miniature that captures the MiamiShark approach — quick development, central pressure, then tactical payoff.
Openings & performance chart
Key openings and performance highlights — useful for players preparing to face MiamiShark or to borrow his ideas.
- Top Bullet lines: Dresden Opening (Goblin) — ~80% win-rate; French Exchange / Advance variations — strong and repeatable; Caro-Kann and Scandinavian — solid choices.
- Most-played opponents include Konstantine1, JussyTheBear and VidalTraore — long rivalries that shaped many stylized encounters.
Fun facts & quirks
- Nickname match: “MiamiShark” — a fitting alias for someone who devours time and position alike
- Avg moves per game: long decisive battles (AvgMovesPerWin ~66) — this player likes to finish what they start
- Endgame frequency is high — practice your technical endings before entering the water
- Placeholder for curious fans: konstantine1 — one of the more frequent rivals
Learn from Federico
If you want to study a Bullet-savvy National Master: review his Goblin and French Exchange games, drill tactical patterns that recover material under time pressure, and build the kind of comfort with increment and pre-moves that turns a good Bullet player into a legend in the chat.
Placeholders and deeper stats embedded for coaches and fans: 2377 (2016-03-12) • 2434 (2022-07-08)