Ofer Zemer Tov (Oferzt)
Overview
Ofer Zemer Tov, known online as Oferzt, is an online chess grinder with a bullet player's heart and a blitz player's workload. Since 2020, he has piled up tens of thousands of rated blitz games, peaking at 2612 (2026-09-30) in August 2025. He plays fast, he plays often, and he rarely sits still.
Blitz Marathon
Oferzt treats blitz like a full-time job. His monthly game counts regularly pass 1,000, and in October 2025 he played more than 1,500 rated blitz games in a single month. The chart below shows his blitz rating journey from 2020 through 2026.
His longest winning streak reached 26 games, while his longest losing streak stretched to 15, proof that even the fastest fingers cool off eventually.
Opening Repertoire
Oferzt favors unconventional and aggressive lines. As White, he has played thousands of Amazon Attack games, including the Siberian Attack. As Black, he regularly reaches the Barnes Defense and the Elephant Gambit, and he is no stranger to the Caro-Kann Defense when the mood calls for something more solid. His opening mix is a tribute to creativity over memorization.
Rivalries
No online career is complete without familiar faces. Oferzt has faced cruz29 131 times and semisem 131 times, with the score against both staying close. Against Puressence, however, the head-to-head is tougher: 39 wins against 72 losses. These rivalries give his daily blitz battles a soap opera feel.
Style and Habits
Oferzt is most dangerous around noon, when his win rate peaks at nearly 48 percent. He scores far better against lower rated opponents, winning over 71 percent of those games, and he keeps fighting after losing material with a comeback rate above 87 percent. His preferred time control is bullet, where his record stands at 45 wins, 5 losses and 1 draw, and his bullet peak reached 1783 (2021-09-17).