Who Is GRANZNER?
Luis Angel Ramirez Sifuentes, better known on the chess server as GRANZNER, is a FIDE Master with a taste for fast time controls and even faster rating climbs. While his preferred time control is bullet, his online legacy has been built in rapid, where he transformed from a sub-700 player into a 2600-level force in just a few years.
The Rapid Ascent
GRANZNER's rapid graph looks less like a rating curve and more like a rocket launch. In mid 2023 he was hovering around 561, by late 2025 he was trading blows above 2600, and his peak rapid rating touched 2640 (2026-02-06). He did it with sheer volume: more than 1,200 rapid games, over 900 wins, and a 24-game winning streak along the way.
His blitz and bullet results are just as respectable. He reached 2395 in bullet, and his strength-adjusted win rate sits near 55 percent in rapid, blitz, and bullet, suggesting the success is real rather than scoreboard farming.
Opening Repertoire
GRANZNER is a 1.e4 man. In 2026 alone he opened with e4 more than 440 times. With Black he leans on the Sicilian Defense, especially the Najdorf Variation, where he scores a formidable 69.5 percent in rapid. The Caro-Kann Defense is another regular guest in his games, with strong results on both sides of the board.
He is not afraid to get weird. The Blackburne Shilling Gambit earns him nearly 88 percent in rapid, and even the Amazon Attack: Siberian Attack makes an appearance. His opening preparation depth has grown from about two moves in 2023 to five moves by 2026, proof that he studies when he is not blitzing out bullet games.
Rivalries and Marathon Battles
Every online grinder has a rival, and GRANZNER's is Cristhian Cruz Sanchez, who leads their 49-game series 30 wins to 16, with 3 draws. That rivalry is the exception, because against sopadelmal GRANZNER has been a nightmare, winning 31 of 35 meetings. These long-running battles help explain why his games average around 72 moves per win; he is happy to grind opponents into the ground.
Playing Style and Personality
GRANZNER combines aggression with resilience. He delivers the first check in nearly 57 percent of his games, and when he checks first he wins 72.6 percent of the time. His comeback rate is 84.3 percent, and he still wins 64.6 percent of games after losing a piece. His longest losing streak is 7, but that is just a footnote in a career full of 24-game heaters.
- Longest winning streak: 24 games
- Comeback rate: 84.3 percent
- White win rate: 67.2 percent, Black win rate: 66.1 percent
- Best time of day: 09:00, so the coffee is clearly working
The Bottom Line
Luis Angel Ramirez Sifuentes is a FIDE Master who plays like a man in a hurry. He climbs rating ladders, outlasts rivals in marathon Sicilian battles, and still finds time to trot out a gambit or two. Whether in bullet or rapid, GRANZNER is a player to watch.