Meet Bruno Terkiewicz
Bruno Terkiewicz, known online as WiIly_Wonka, is a FIDE Candidate Master with a sweet tooth for fast, chaotic chess. His preferred time control is bullet, and he shows no fear in marathon blitz sessions where he has played more than 700 games in a single month. Bruno plays direct, ambitious chess and loves to draw first blood. He checks his opponent early, and when he is the first to give check, he wins over 52% of the time.
A Repertoire Full of Surprises
His opening choices mix classical theory with daring experiments. As Black he is a loyal student of the Caro-Kann Defense, and as White he repeatedly finds success against the Sicilian Defense with the Anti-Sveshnikov line. He also enjoys the Amar Gambit, a rare wing gambit that fits his willingness to unbalance the position before his opponent is ready.
He has built a fierce rivalry with Milena Kawka, winning 46 of their 78 encounters. That head to head record is one of the clearest signs of his fighting spirit, since many of his other rivals have pushed him into long, grinding battles.
Streaks and Comebacks
Bruno has a 12 game winning streak on his resume, along with a painful 10 game losing streak that shows how much he is willing to risk in open, tactical positions. His comeback rate is remarkable at 83.22%, and he still wins 44.66% of games after losing a piece. He does not resign easily, but he also punishes early resignations by his opponents with a 36% early resignation rate against them.
By the Numbers
His blitz progression tells the story of a player who keeps climbing:
. A closer look at his opening performance in bullet and blitz shows where he wins and where he struggles: . His bullet peak reached 2682 (2026-03-28), and in blitz he touched 2717 (2025-07-14). Even with a Tilt Factor of 10, Bruno remains one of the most entertaining and relentless grinders in his rating range.