Luis Fernández Siles: The Bullet-Speed FIDE Master
Who Is LuisFSiles?
Luis Fernández Siles, known on the chessboard as LuisFSiles, is a FIDE Master and streamer who approaches online chess like a full-contact sport. His username is a promise: fast, fearless, and always ready for another game. Luis earned the FIDE Master title from FIDE and never slowed down, becoming one of the most recognizable online chess grinders around.
The Fast Chess Grinder
Luis lives for speed. His preferred time control is bullet, and his stats show a strange and beautiful love for late-night sessions, with his best playing hour listed as 03:00. He has played thousands of blitz games, and the Sicilian Defense appears in his repertoire over and over again, whether he is attacking or defending. He does not just play chess. He marathons it.
His blitz journey is a slow burn from strong club player to genuine online danger.
shows the climb, complete with the wild swings you expect from someone who can play hundreds of games in a single month.Opening Repertoire: Sharp and Unapologetic
As White, Luis loves the Italian Game: Two Knights Defense and scores impressively with it in blitz. Against 1.e4 he regularly reaches for the Sicilian, especially the Alapin, the Closed, and the wonderfully named Four Knights Cobra Variation. As Black, he is comfortable in the King's Indian Defense and the French Defense. When he wants to entertain his stream, he pulls out the Amazon Attack: Siberian Attack, an opening that sounds more like a video game move than a chess line.
His opening taste is aggressive but not reckless. He delivers checks more often than his opponents, and when he is the first to check, his win rate climbs well above 50 percent. He also wins 84 percent of the time after falling behind, which is a polite way of saying he never stops believing.
Rivalries and Dominance
Every online grinder has a rival. For Luis, there is Carlos Matamoros, a tough opponent who has gotten the better of him across many meetings. But for every nemesis there is a favorite victim: against skainet he holds a perfect 26-0 record. Some rivalries are built on mutual respect. That one appears to be built on something else entirely.
Streamer and Entertainer
Luis is not just a silent grinder. As a streamer, he brings his bullet addiction and his eccentric openings to a live audience, mixing high-level play with the kind of chaos that makes online chess so enjoyable. He has a 35-game winning streak on his record, a 15-game losing streak to keep him humble, and a comeback rate that makes every broadcast feel like a thriller.
By the Numbers
His peak bullet rating is a very fast 2452 (2023-08-05). His blitz peak is even more terrifying at 2612 (2026-09-14). He wins more than half his games with White and still manages a healthy 45 percent with Black.
shows where he does his damage, from the Two Knights to the French Advance and beyond.Put simply, Luis Fernández Siles is a player who turns every time control into bullet time.