Avatar of Throstur Thorhallsson
Player Profile

Throstur Thorhallsson GM

Fosti19 Since 2017 (Inactive) Chess.com
47.4% W 37.2% L 15.4% D
Blitz
2544
120W 99L 37D
Rapid
2275
6W 0L 4D

Throstur Thorhallsson: The Blitz Viking Grandmaster

Throstur Thorhallsson, also known online as Fosti19, earned his FIDE Grandmaster title through relentless dedication to the game. With a name that echoes Norse legends, this player channels Viking spirit into chess, favoring fast paced Blitz matches where quick decisions lead to victory or hilarious blunders.

Chess Journey

Starting strong in the late 2010s, Throstur honed skills across numerous games, building a reputation for aggressive play. His preferred time control is Blitz, where he thrives under pressure and delivers surprising comebacks. Fans often search for Throstur Thorhallsson biography to learn about his rise in competitive chess circles.

Signature Openings and Tactics

Throstur frequently deploys the Scandinavian Defense as Black, turning it into a weapon for counterattacks. As White, he excels with the Scotch Game, creating dynamic positions that keep opponents guessing. His style mixes solid preparation with bold risks, often leading to memorable endgames.

Rivalries and Highlights

Throstur has faced tough competition, including intense series against Markus Lammers. These encounters showcase his tactical awareness and ability to adapt mid game. Whether winning streaks or learning from losses, his career inspires aspiring players worldwide seeking chess grandmaster insights.

Blitz Rating258124862391229622002017: 22312018: 22452019: 24612020: 24722022: 25472023: 24662024: 25502025: 254420172018201920202022202320242025
Win Rate by Opening0%25%75%100%50%Scandinavian Defense: 40.9% over 44 gamesCaro-Kann Defense: Exchange Variation: 61.5% over 13 gamesFrench Defense: Burn Variation: 83.3% over 12 gamesScotch Game: 70.0% over 10 gamesFrench Defense: Winawer Variation, Advance Variation: 75.0% over 8 gamesSicilian Defense: Alapin Variation: 25.0% over 8 gamesScandinavian Defense41%Caro-Kann Defense: Exch…62%French Defense: Burn Va…83%Scotch Game70%French Defense: Winawer…75%Sicilian Defense: Alapi…25%
Bio last updated 2026-07-05