Profile
Maria Florencia Fernández is a rising chess talent and widely admired streamer. They earned the Woman International Master (WIM) title from FIDE and bring a bright, creative spirit to both online and over-the-board play. They stream and compete with a smile, proving that thinking players can be passionate and entertaining at the same time.
Chess career and titles
Fernández embraced competition across Blitz, Bullet, and Rapid, earning a reputation for sharp tactical play and principled strategy under pressure. Their preferred time control is Rapid, where they enjoy fast, dynamic battles and clear, instructive analysis. They continue to expand their repertoire and mentor aspiring players through their streams and games.
Fans can follow a compact chart of their Rapid rating
.Peak ratings highlight a fast-rising profile: Bullet peak around 2635, Blitz peak around 2472, and Rapid peak around 2139 (with the Bullet and Blitz milestones reached in 2025). 2635 (2025-05-17) 2472 (2025-05-14) 2139 (2021-09-04)
Streaming and online presence
Online, they go by the alias effefe and bring their board to life for viewers worldwide. They share games, commentary, and accessible explanations, turning complex ideas into teachable moments. You can explore their profile and recent streams at Maria Florencia Fernández.
Opening repertoire and style
Fernández has a diverse opening repertoire with notable performance across fast time controls. Highlights from their openings performance include:
- Blitz: King’s Indian Defense — Averbakh Variation: 78 games, 45 wins, 33 losses, 0 draws (WinRate 57.69%)
- Blitz: Sicilian Defense — Dragon Variation, Yugoslav Attack: 76 games, 39 wins, 31 losses, 6 draws (WinRate 51.32%)
- Blitz: Nimzo-Indian Defense — Samisch Variation: 63 games, 35 wins, 25 losses, 3 draws (WinRate 55.56%)
- Blitz: QGD: 3.Nc3 Nf6 4.e3: 32 games, 23 wins, 8 losses, 1 draw (WinRate 71.88%)
- Bullet: Czech Defense and Pirc/Modern family lines show flexibility and aggressive piece activity
Impact and ongoing journey
Beyond the board, Fernández embodies the modern chess player: technically proficient, generous with knowledge, and known for a playful, educational approach that resonates with fans of all ages. They continue to compete at high levels while streaming, coaching, and inspiring a growing community of players who value learning with a smile.
Constructive Feedback for Maria Florencia Fernández
What you are already doing well
- Dynamic openings. As Black you rely on Pirc/Kings-Indian structures (…g6, …Bg7). These give you rich, double-edged middlegames that fit your tactical style.
- Practical tactics. Your recent wins show confident combinations such as 24…Nd4! and pawn storms with …g5/…f4 that catch many opponents off guard.
- Good fighting spirit. Even in worse positions you keep material on the board and look for counter-play instead of forcing exchanges.
Three priorities for the next training cycle
-
Time management. You lost four of the last ten games on time from playable positions. Try these habits:
‑ Use the opening phase to “pre-move” known book moves.
‑ Adopt a simple counting rule: if your clock shows < 10 s you must either force a perpetual, liquidate to a trivially drawn ending, or simplify material immediately.
‑ Bullet-specific drills such as 1 | 0 arena streaks will improve your intuitive move speed without hurting accuracy. -
King safety in the King’s Indian.
• In the Exchange line (E92) your …h6/…g5 plan gave White a permanent hook on h4 and the f-file opened against you.
• Compare your choice with the standard plan …c6, …a5, …Be6 followed by …d5, keeping the g-pawn back.
Tip: Load a reference game by Radjabov or Gelfand and replay till move 20 daily for a week; pattern recognition will replace guesswork. -
Conversion technique in winning endgames.
In your victory over PartyPandaBear you needed 40 extra moves to convert a rook & pawn ending a piece up. Adopt the “four-step” checklist:
- Activate king
- Fix opponent’s pawns on one colour
- Create & advance passed pawn
- Use zugzwang & zwischenzug ideas to force capitulation
Opening micro-targets (next 30 games)
| As White | As Black |
|---|---|
| Play 10 games with 1.d4 c6 2.c4 d5 and practice the Panov plans. | Replace 1…d6 with 1…e6 vs 1.d4 three times to test the Queen’s-Indian / …Bb4+ set-up. This broadens your position types and reduces predictability. |
Annotated snapshot from your last loss
Progress tracker
Peak bullet rating: | Visualise your activity:
&Next steps
- Schedule two sparring sessions this week where you start from the diagram after 10.O-O-O in the Exchange KID and play each side twice.
- Finish one Chess.com Puzzle Rush daily until you consistently score ≥ 34; this sharpens the quick tactics you rely on in bullet.
- Send me two games where you felt in control throughout; we will mine them for “best practices” to replicate.
¡Sigue así, Flor! Small, focused tweaks will convert many of those near-misses into clean wins.
🆚 Opponent Insights
| Most Played Opponents | ||
|---|---|---|
| Jose Fernando Cuenca | 6W / 35L / 1D | View Games |
| J | 15W / 18L / 1D | View Games |
| chronoknight | 17W / 12L / 0D | View Games |
| Hitmantotez | 11W / 15L / 2D | View Games |
| gamayevoleg | 11W / 13L / 4D | View Games |
Rating
| Year | Bullet | Blitz | Rapid | Daily |
|---|---|---|---|---|
| 2025 | 2601 | 2427 | 2048 | |
| 2024 | 2565 | 2420 | 2064 | |
| 2023 | 2512 | 2303 | ||
| 2022 | 2342 | |||
| 2021 | 2519 | 2247 | 2080 | |
| 2020 | 2197 | 2187 | ||
| 2019 | 2303 | 2371 | ||
| 2018 | 2351 | |||
| 2017 | 1269 |
Stats by Year
| Year | White | Black | Moves |
|---|---|---|---|
| 2025 | 254W / 262L / 36D | 227W / 296L / 43D | 90.7 |
| 2024 | 194W / 191L / 15D | 194W / 190L / 16D | 89.4 |
| 2023 | 233W / 229L / 28D | 224W / 233L / 35D | 91.0 |
| 2022 | 14W / 7L / 2D | 13W / 6L / 2D | 94.1 |
| 2021 | 60W / 55L / 8D | 56W / 59L / 9D | 93.3 |
| 2020 | 75W / 66L / 7D | 62W / 83L / 7D | 88.3 |
| 2019 | 862W / 793L / 100D | 810W / 863L / 95D | 91.0 |
| 2018 | 33W / 28L / 5D | 37W / 26L / 4D | 84.2 |
| 2017 | 4W / 1L / 1D | 2W / 0L / 0D | 77.4 |
Openings: Most Played
| Blitz Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| King's Indian Defense: Averbakh Variation | 78 | 45 | 33 | 0 | 57.7% |
| Sicilian Defense: Dragon Variation, Yugoslav Attack | 76 | 39 | 31 | 6 | 51.3% |
| Nimzo-Indian Defense: Sämisch Variation, Accelerated | 63 | 35 | 25 | 3 | 55.6% |
| Czech Defense | 50 | 29 | 19 | 2 | 58.0% |
| Australian Defense | 40 | 18 | 20 | 2 | 45.0% |
| Sicilian Defense | 35 | 17 | 17 | 1 | 48.6% |
| Sicilian Defense: Moscow Variation | 33 | 10 | 22 | 1 | 30.3% |
| QGD: 3.Nc3 Nf6 4.e3 | 32 | 23 | 8 | 1 | 71.9% |
| East Indian Defense | 31 | 14 | 15 | 2 | 45.2% |
| King's Indian Defense: Fianchetto Variation, Delayed Fianchetto | 30 | 12 | 15 | 3 | 40.0% |
| Bullet Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Czech Defense | 504 | 243 | 221 | 40 | 48.2% |
| Australian Defense | 308 | 137 | 158 | 13 | 44.5% |
| Amar Gambit | 244 | 113 | 124 | 7 | 46.3% |
| Benoni Defense: Benoni Gambit Accepted | 230 | 114 | 104 | 12 | 49.6% |
| King's Indian Defense: Averbakh Variation | 224 | 97 | 109 | 18 | 43.3% |
| Pirc Defense: Classical Variation | 219 | 77 | 125 | 17 | 35.2% |
| East Indian Defense | 194 | 83 | 98 | 13 | 42.8% |
| Pirc Defense: Austrian Attack | 145 | 57 | 80 | 8 | 39.3% |
| Slav Defense: Alekhine Variation | 140 | 71 | 62 | 7 | 50.7% |
| Modern Defense | 129 | 76 | 47 | 6 | 58.9% |
| Rapid Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Benko Gambit | 2 | 2 | 0 | 0 | 100.0% |
| QGD: 3.Nc3 Nf6 4.e3 | 2 | 2 | 0 | 0 | 100.0% |
| QGD: 4.Nf3 | 2 | 1 | 1 | 0 | 50.0% |
| Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line | 1 | 0 | 1 | 0 | 0.0% |
| Sicilian Defense | 1 | 1 | 0 | 0 | 100.0% |
| Barnes Defense | 1 | 0 | 1 | 0 | 0.0% |
| Slav Defense | 1 | 0 | 1 | 0 | 0.0% |
| QGA: 4.Nc3 a6 | 1 | 0 | 1 | 0 | 0.0% |
| Nimzo-Indian Defense | 1 | 1 | 0 | 0 | 100.0% |
| Benoni Defense: Four Pawns Attack | 1 | 0 | 1 | 0 | 0.0% |
🔥 Streaks
| Streak | Longest | Current |
|---|---|---|
| Winning | 20 | 0 |
| Losing | 20 | 1 |