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Profile: Double K (aka hinobruno)

Meet Double K, the rapid-fire tactician known in the chess cosmos as hinobruno. With a peak rapid rating soaring to 887 in May 2025, Double K’s journey is nothing short of a thrilling rollercoaster ride — full of ups, downs, and a smattering of cheeky checkmates that leave opponents reeling.

Starting modestly with a rating just shy of 400 at the end of 2024, Double K quickly climbed the ranks to breach the 800 barrier in just a few months — proving a knack for rapid improvement matched only by his persistence. With a career rapid record of 558 wins, 514 losses, and 61 draws, every game is a fresh battle where every slip can mean victory or defeat.

Signature Style & Stats

• Playing style: Known for lasting till the bitter end, Double K frequently grinds out endgames (over 61% frequency) and averages a whopping 53 moves per win, proving patience is a virtue!
• Psychological traits: With an 11% tilt factor and a comeback rate north of 61%, Double K is the embodiment of resilience — falling down but bouncing back with a grin and a killer tactic up his sleeve.
• Best time to play: Midnight magic alert! His most successful games are played at 00:00, when the moonlight seems to infuse extra cunning into every move.

Opening Repertoire Highlights

Double K’s favorite arenas are the classic King's Pawn Opening and its Kings Knight Variation, boasting win rates of 57.8% and 61.5% respectively. He also dabbles effectively with the Scandinavian Defense and Queen's Pawn Opening, proving an eclectic and adaptable opening repertoire. Beware: his Philidor Defense record is arguably his “love-to-hate” zone with a sub-30% success rate — even the best have their quirks!

Record & Rivalries

With a longest winning streak of 12 games and a more sobering longest losing streak of 11, Double K’s competitive spirit keeps him in the fight no matter what. Opponents like pierstate, antriksh5235, and daytjie have felt his checkmating sting firsthand, while some like iamamian have managed to dodge the bullet (for now).

Most Recent Triumph

Just recently on June 2, 2025, in a dazzling display of tactical wizardry, Double K (white) checkmated piersTate in a Vienna Game - Falkbeer Variation, showcasing precise piece play and relentless pressure culminating in a final queen’s attack on g5. (View game)

Fun Fact

Despite grinding through a rapid match count exceeding 1,000 games, Double K's audacity never fades — from launching early knight sacrifices to endgame queening marathons, every game is a new story of valiant battles and “Did he really just do that?” moments.

So if you ever face hinobruno at the board, prepare for an unpredictable ride where patience battles aggression, and checkmates come with a sprinkle of flair and a dash of “Oops, I did it again!”