Avatar of Lionel Sierra Vallina

Lionel Sierra Vallina FM

Username: Dinosaurio_1975

Playing Since: 2022-02-02 (Active)

Wow Factor: ♟♟♟♟

Chess.com

Rapid: 2338
1W / 0L / 0D
Blitz: 2672
596W / 485L / 76D

Profile: Lionel Sierra Vallina (aka Dinosaurio_1975)

Title: FIDE Master

Lionel Sierra Vallina is a formidable force in the world of blitz chess, known online as Dinosaurio_1975. Carrying the prestigious FIDE Master title, Lionel combines strategic genius with a streak of tactical wizardry, making each of his games a rollercoaster ride of thrills and clever surprises.

Chess Journey & Playing Style

Starting from a modest blitz rating of around 1672 in early 2022, Lionel soared to an impressive peak of 2689 by the end of 2023, showing remarkable determination and skill growth. With an average blitz rating comfortably above 2500 in recent months, he dominates the fast-paced arena like a true dinosaur stomping through the competition.

His style speaks volumes: Lionel loves long endgames (played almost 90% of his matches to the very end), averaging around 84 moves per win — clearly, patience is his secret weapon. Early resignations are rare (only 0.25%), proving he's a fighter who won't back down easily. Also notable is his psychological resilience — an 89% comeback rate after being down makes him a nightmare for opponents who think they've got him cornered. And if he loses a piece? Don’t panic, his win rate after that is a solid 50%.

Statistics & Notable Highlights

  • Total recorded blitz games: over 950!
  • Blitz win record: 501 wins, 407 losses, and 58 draws
  • Rapid chess perfection: 1 win in 1 game (because who has time for slow chess?)
  • Longest winning streak: 11 consecutive victories — a mini chess marathon
  • Peak blitz rating: 2689 (December 2023), Rapid rating: 2338 (July 2023)

Battle-Tested Against The Best

His favorite opening? It's a secret, but joking aside, Lionel’s "Top Secret" opening performance includes nearly 1000 blitz games with a winning percentage just shy of 52%, demonstrating not only mastery but a flair for keeping opponents guessing.

When Does Lionel Shine?

Not a morning person but a true nocturnal genius, Lionel's best time to play is around 10 PM where his win rate skyrockets to nearly 86%. A perfect nod to all late-night strategists who fuel their chess ideas with a cup of coffee (or perhaps a mysterious dinosaur roar).

Recent Triumphs

In one of his latest brilliant games, Lionel (playing White) executed a checkmate victory in a Nimzowitsch-Larsen Attack, showcasing his tactical awareness and endgame finesse. His final move, Bf6#, was the cheeky checkmate that left his opponent in awe.

In Summary

Whether blitzing away opponents with fierce determination or engaging in deep, grinding endgames, Lionel Sierra Vallina is a chess player who blends skill, patience, and psychological tenacity. Just like a dinosaur, when he strikes, it's memorable — and possibly history-making.


Coach's Avatar

Overall Performance and Rating Trends

Lionel, your current adjusted win rate around 52% is solid, indicating competitive play in your blitz games. However, your recent rating changes show a slight decline with a loss of about 29 points in the last month and similar declines over 3 and 6 months.

Interestingly, while the rating trend over the last month shows a positive slope, longer-term trends over 3, 6, and 12 months indicate a gradual decline. This suggests there may be recent signs of improvement, which is encouraging.

Strengths in Your Recent Games

  • You display good opening knowledge, often playing flexible and positional openings like the English Opening and Reti Opening.
  • In winning games, you effectively build pressure against your opponent and use piece activity well to transition into favorable endgames.
  • Your endgame technique is commendable, with several wins coming from well-managed transitions and exploiting opponent’s weaknesses.
  • You show patience in pawn advances and timely piece maneuvers before launching decisive actions.

Areas for Growth and Recommendations

  • Time Management: Some losses ended by time trouble; improving clock management, especially in blitz, could help sustain your quality of play through to the endgame.
  • Calculate Critical Lines More Deeply: A few games saw tactical oversights or missed defensive resources. Slow down in critical moments to calculate more moves ahead.
  • Opening Consistency: Regularly reinforce your main opening repertoire to gain more confidence and avoid early disadvantages.
  • Defensive Awareness: Keep an eye on opponent threats, especially tactical shots and mating nets, as you lost a couple of games to checkmate or tactical sequences.
  • Analyze Losses in Detail: Review each loss thoroughly using an engine or coach to identify recurring patterns or mistakes to correct.

Next Steps for Improvement

To build on recent positive trends and reverse the longer-term rating decline, consider the following:

  • Incorporate focused tactical training drills to sharpen calculation speed and accuracy.
  • Practice blitz time management strategies, such as pre-moving wisely and reserving time for complicated positions.
  • Choose a few primary openings aligned with your style and deepen your understanding through model games and thematic studies.
  • Consistently analyze your own games, focusing especially on losses, to internalize lessons.
  • If possible, work with a coach or more experienced players to gain external feedback on critical positions.

Encouragement

Consistency and continuous learning are key in blitz chess improvement. Your recent performance shows promising potential, and with focused effort on the areas highlighted, you can achieve meaningful rating gains and more satisfying results.

Keep enjoying your games and good luck in your next battles on the board!



🆚 Opponent Insights

Most Played Opponents
Lazaro Lorenzo De La Riva 3W / 4L / 0D
ringouz 3W / 3L / 0D
Sandi Stojanovski 4W / 2L / 0D
Jan Karsten 2W / 3L / 0D
Viktor Parfenov 3W / 2L / 0D

Rating

Year Bullet Blitz Rapid Daily
2025 2672
2024 2610
2023 2643 2338
2022 2061
Rating by Year202220232024202526722061YearRatingBlitz

Stats by Year

Year White Black Moves
2025 55W / 36L / 6D 40W / 42L / 12D 83.7
2024 50W / 44L / 3D 44W / 49L / 5D 90.9
2023 198W / 150L / 24D 193W / 156L / 26D 91.2
2022 9W / 4L / 0D 8W / 4L / 0D 96.1

Openings: Most Played

Blitz Opening Games Wins Losses Draws Win Rate
Caro-Kann Defense 131 70 54 7 53.4%
French Defense: Advance Variation 52 29 17 6 55.8%
Caro-Kann Defense: Exchange Variation 35 18 13 4 51.4%
Sicilian Defense: Moscow Variation 35 15 15 5 42.9%
Sicilian Defense: Moscow Variation, Haag Gambit 34 18 12 4 52.9%
QGD: 4.Nf3 31 14 15 2 45.2%
QGD: 3.Nc3 Bb4 30 18 9 3 60.0%
French Defense 30 15 12 3 50.0%
English Opening: Agincourt Defense 27 11 14 2 40.7%
Blackburne Shilling Gambit 26 10 16 0 38.5%
Rapid Opening Games Wins Losses Draws Win Rate
Bird Opening: Dutch Variation, Batavo Gambit 1 1 0 0 100.0%

🔥 Streaks

Streak Longest Current
Winning 11 1
Losing 6 0