Grandmaster Ronen Har-Zvi (aka OldweakGM)
Ronen Har-Zvi is not just your everyday chess player—he’s a Grandmaster, a title that basically means he can outthink you before you even blink. Known online as OldweakGM, Ronen blends deep strategic insight with tactical fireworks, making opponents question their life choices one move at a time.
Career Highlights & Ratings
- Peak Blitz Rating: 2917 (November 2020) - yes, that’s almost as quick as your morning coffee disappearing.
- Peak Bullet Rating: 2901 (April 2025) - lightning-fast decisions with precision that would make even the fastest grandmaster envious.
- Peak Rapid Rating: 2637 (July 2022) - a speed demon with a knack for mid-game mastery.
- Daily Chess Rating: A humble 774, because sometimes slow and steady loses the thrill.
Playing Style & Stats
Ronen’s style is a thrilling rollercoaster: early resignation rate sits low at 5.43%, proving patience is a virtue. His endgames happen in 71.39% of games, showing he loves the gritty battles until the very end. On average, his wins and losses span around 68 moves—plenty of suspense for both sides.
White pieces? Ronen crushes with a 70.77% win rate. Black? Still hefty, at 63.91% — because even the dark side has its champions.
Known for tactical resilience, Ronen boasts a comeback success rate of 77.55%, meaning falling behind is just an invitation to unleash brilliance.
Record-Breaking Fun
Want numbers? He has clinched 319 wins in Blitz alone with an astounding 72.34% win rate in his secret opening (which remains, for now, top secret). Bullet chess? He stormed through 712 games, scoring wins in nearly 65% of attempts. Oh, and his longest winning streak? A jaw-dropping 19 consecutive victories – like a chess machine on fire.
The Human Behind the Pieces
Beyond the numbers, Ronen's approach is a blend of fierce determination and light-hearted wit (hence the playful username OldweakGM—never trust a name!). He's a true gladiator of the 64 squares, facing the grind of ratings, surviving tilt (with just a 5 tilt factor!), and finding his best game time at the unearthly hour of 4 AM. Clearly, chess waits for no one—not even sleep.
Recent Adventures on the Board
In his latest recorded triumph on April 20, 2025, in a Live Chess event, Ronen (playing White) showcased his mastery in an intense Reti Opening, claiming victory by resignation after a brilliant knight sacrifice that left his opponent no choice but to concede. His playstyle in that game perfectly sums up his career: patient, tactical, and always a few steps ahead.
So, next time you face Ronen Har-Zvi online, remember: the “old weak GM” label is just a clever disguise for one of the sharpest minds in chess history.