Candidate Master with a Bullet Addiction
Oskar Kiszkiel, who competes online as marysiakos, is a FIDE Candidate Master with a serious soft spot for bullet chess. While many titled players use slower games as their laboratory, Kiszkiel prefers to run experiments at warp speed. His bullet rating has touched 2978 (2026-09-02), and he has played thousands of games in a single season, with winning streaks that can reach 15 in a row and losing streaks that remind everyone he is only human.
Style and Openings
Kiszkiel is a loyal 1.e4 player, though he also slides in 1.Nf3 far more often than the average bullet grinder. He is heavily booked in the Alekhine Defense, the Scandinavian Defense, and the Amar Gambit, and his games tend to go deep. His decisive battles average around 83 moves, and he reaches the endgame in roughly 81 percent of his outings. That is unusually patient for someone who spends so much time on the bullet board.
Rivalries and Resilience
No opponent has tested Kiszkiel more than Kacper Klys, with more than 300 meetings between the two. Against henioworowski, however, Kiszkiel has had the upper hand, winning over 150 of their games. His numbers also suggest he is most dangerous after a setback: his comeback rate is around 89 percent, and his win rate after losing a piece stays near 51 percent. He saves his best chess for odd hours, with his highest win rate by hour coming around 1 a.m.
- Known to favor rooks when delivering checks
- Wins more with the white pieces but remains dangerous with black
- Feeds on lower-rated opposition and rarely stays tilted for long