FIDE Master Henri Lahdelma: The Blitz Ironman of Finland
Henri Lahdelma, known in the arena as HenriL, is a FIDE Master from Finland whose career proves that chess improvement is 10% talent, 10% study, and 80% refusing to stop playing. Since his first online moves in 2010 as a four-digit beginner, Henri has racked up more than 18,000 blitz games, grinding from the 1100s to a peak of 2695 (2025-03-26) while also crossing 2400 in both rapid and daily play. His homeland has 188,000 lakes; Henri's contribution to Finnish endurance is measured in keystrokes.
Humble Beginnings and a Legendary Collapse
The early years were character building. Through 2010 and 2011 Henri drifted between 1100 and 1500, absorbing forks and discovered checks like a professional. Then came December 2012 in daily chess: sixteen games, sixteen losses, a 0-16 month that would end most careers. Henri's response was to vanish for three years, return in late 2016, and immediately rip off 14 straight daily wins. It set the template for everything that followed: get flattened, respawn, get better.
By 2014 his blitz rating had climbed past 1700, the 2000 barrier fell in December 2016, and the 2200s arrived by 2019. In March 2023 alone he played 512 blitz games, roughly 16 per day, which is either remarkable dedication or a polite cry for help.
Blitz, the Preferred Battlefield
Blitz is where Henri built his empire: 8,873 wins, 8,091 losses and 1,152 draws, a career-long coin flip that describes a man who has never met a stronger opponent he wasn't willing to face anyway. His longest winning streak reached 19 games. His longest losing streak reached 23, and it is banned from all conversation. Away from the blitz board he owns a bullet peak of 2679 and matching rapid and daily peaks of 2405, making him a genuine all-format threat.
The French Defense, the King's Indian, and the Thunderbunny
Young Henri was a 1.e4 loyalist; in 2010 he opened with the king's pawn in 120 of 122 White games. Age mellowed him into 1.d4 and Reti move orders, but as Black his loyalty never wavered: the French Defense has absorbed over 700 of his blitz games, meeting the Advance, Burn and Exchange Variations with a wall of pure stubbornness.
Daily chess reveals his secret identity. There he is a King's Indian Defense devotee with a flawless 15-0 record in the Larsen Variation, plus an 84% score in the Guimard French's gloriously named Thunderbunny Variation. Elsewhere in the repertoire you will find the Blackburne Shilling Gambit, the Amar Gambit, the Australian Defense, and a Colle line called the Rhamphorhynchus Variation, named after a pterosaur, which is fitting because facing it feels like being pecked at from above.
Grinder by Nature
The numbers sketch a patient brawler. Over 83% of his games reach an endgame, and his average win stretches nearly 78 moves, meaning Henri is delighted to outlast you for as long as it takes. When a position is truly lost he resigns early about 68% of the time, preferring honesty to prolonged suffering. His favorite way to bother opponents is a queen check, of which he has delivered more than 21,000, roughly one per game since 2010.
The Oliver Question
Every long career needs a nemesis, and Henri's is Oliver Wartiovaara, his most frequent opponent with 91 games on the ledger. The head-to-head currently reads 32 wins, 51 losses and 8 draws in Oliver's favor, a deficit Henri reportedly describes as motivational. At the current pace, the saga concludes sometime around 2038.
The Night Shift
Henri's win rate peaks in the small hours, topping out around 2 AM at nearly 64%. Whether that is strategic scheduling or a long-running feud with sleep remains unclear, but if you are a night-owl player queuing up at midnight and a Finnish FIDE Master appears, brew some coffee first.
Career Highlights
- Earned the FIDE Master title from FIDE
- Blitz peak of 2695 in March 2025, with a bullet peak of 2679
- More than 18,000 blitz games played since 2010
- Longest winning streak: 19 games
- Comeback rate above 85%, a proud collector of second lives
- A combined 15-0 score in daily King's Indian Larsen Variation games
- Survived an 0-16 month in daily chess and lived to grind another day