Kuba Piotrowski (ERYKKUPA)
Meet Kuba Piotrowski, known online as ERYKKUPA, a chess player whose game is a rollercoaster of skill, persistence, and the occasional early resignation — but don’t hold that against him; even grandmasters do it sometimes! Starting from humble beginnings with a rapid rating around 213 in 2023, Kuba has been on a steep climb, smashing his way to a rapid peak of 932 by 2025.
Kuba is a versatile competitor across all formats: rapid, blitz, and bullet. His bullet rating skyrocketed dramatically from a mere 100 in 2023 to an impressive 1204 in 2025, proving he’s not just a slow thinker—he’s got lightning reflexes when it counts. Blitz play also saw a strong improvement, with a max rating of 639 in 2025.
With nearly 2,200 wins in rapid games and close to as many losses, Kuba knows how to keep things exciting — his longest winning streak is a hefty 20 games, showing he can be unstoppable when on a roll. He tends to play long games, averaging about 66 moves per win, which suggests a strategic mind that enjoys the deep fight rather than quick checkmates.
Tactical awareness is clearly Kuba’s secret weapon. His comeback rate clocks in at an amazing 74%, and if he loses a piece? Well, he has a 100% win rate after such setbacks, which may mean his opponents should watch out for trickery after grabbing material. Just beware if you’re aiming for a quick win; Kuba’s one-sided loss rate is a modest 9.5%, so patience is key.
Psychologically, Kuba keeps a cool head with a tilt factor of just 12, and interestingly, he performs better in rated games than casual ones by about 48%. Maybe the thrill of stakes helps his mind sharpen! He does prefer white slightly, winning 49% of the time, but his black pieces performance is nothing to sneeze at either.
Kuba’s style includes a healthy dose of endgame battles, facing the last phase of a game in over 60% of his matches. If you play him, expect a marathon — and maybe a few coffee breaks.
When's the best time to catch Kuba online? He plays best on Saturdays and Wednesdays with about a 50% win rate, and oddly enough, 6 AM is his magic hour with a perfect 100% win rate — perhaps morning freshness is his secret weapon.
Facing him? You might run into his most frequent opponents like sergeseyka or stjepannnn. If you’re lucky, you might even be one of those rare players with a perfect 100% loss record against him (ouch!).
In short, Kuba Piotrowski is a dedicated, improving, and surprisingly resilient chess warrior in the online realm — rapidly rising through the ranks with a knack for turning the tables even in the direst situations. His chess journey proves that every piece lost is just another plot twist in the saga of checkmate.