Marek Zakrzewski — FIDE Master & Tactical Maestro
Marek Zakrzewski, aka Cosi43 to those who know him only from the chessboard, is no ordinary player – he’s a FIDE Master with a flair for blitz and bullet chess that can only be described as lightning-fast wizardry. Starting his blitz journey back in 2019 with a rating that sprinted from 1965 all the way up to a blistering 2739 by 2025, Marek’s growth resembles a rocket fueled by caffeine and sheer determination.
His blitz performance speaks volumes: over 1,500 games with an impressive 55%+ win rate, including a streak of 11 consecutive victories at one point. When Marek's on a roll (which is pretty often), his psychological resilience shines, boasting a comeback rate of nearly 94% and a perfect 100% win rate after losing a piece. Clearly, losing pieces is just a plot twist in his epic chess narratives.
If you’re playing against Marek on a Sunday afternoon (his best day according to stats), don’t be surprised if you’re caught off guard by his strategic endgames — he prefers the grind, with an endgame frequency of 87% and matches often stretching over 85 moves on average. Opponents like gmboorchess and newchess1213 have felt his wrath firsthand, with Marek boasting a perfect 100% win rate against them recently.
Marek also moonlights in bullet chess, proving that speed doesn’t come at the cost of accuracy. His bullet peak rating soared to 2693 in 2023, and he keeps a solid 56% win rate overall. Just don’t try to outpace him at the crack of dawn — his 6 AM win rate is a staggering 71%, suggesting that Marek is either a morning person or a chess ninja who sneaks games before sunrise.
Off the board, Marek might chuckle at the idea of "early resignation" since his rate is a modest 0.33% — talk about persistence! Whether wielding White or Black, he edges out a victory about half the time, proving adaptability and balance in his playstyle.
In summary, Marek Zakrzewski is a fierce competitor with a knack for turning tricky situations into victories, a chess player not just playing moves but weaving stories on 64 squares — watch out, world; this FM’s just getting started!