Jimmy Kim

Player Profile: Jimmy Kim

Also known in the chess community (and possibly his own mirror) as Rook_at_the_mirror, Jimmy Kim is a fascinating case study in resilience, strategy, and occasionally, early game surrender—about 9.24% of the time, to be exact.

Rating Rollercoaster

From 2023 through 2025, Jimmy's ratings have been nothing short of a thrilling rollercoaster ride:

• Rapid: Starting at a modest 1299 in 2023, he soared to a peak of 1627 in 2025. Clearly, he's a speedster who thrives when the clock ticks louder.
• Blitz: While 2023 was a decent year with a peak rating of 1347, he hit a brief slump in 2024 (a lowly 778), only to fight back strongly by 2025 reaching 1127.
• Bullet: Not to be outdone, he jumped from sub-1000 ratings in early years to over 1100 by 2025, showing his rapid-fire tactics are anything but bulletproof—unless firing from all barrels is his secret.
• Daily Chess: When given time to ponder, Jimmy hovers around the century mark, peaking just above 1000. Slow and steady may not win this race, but it sure makes the battle more thoughtful.

Playing Style & Quirks

Jimmy isn’t shy about ending battles early, bowing out about 9% of the time before his king falls. But don’t mistake this for weakness; it’s strategic patience or "I know when to fold 'em" at its finest. He favors the endgame, with over 60% of his games extending to the very last moves—proving he's comfortable navigating the trenches.

An average winning game lasts close to 60 moves, while defeats linger slightly longer at about 66 moves, because even in loss, Jimmy likes to drag it out and make you sweat.

He enjoys the white pieces slightly more, winning 52% of the time, but holds his own well with black too, winning half the time. Truly a balanced warrior.

Comebacks and Psychological Fortitude

Any chess player can hit a bad patch, but not Jimmy—he boasts an impressive 70.82% comeback rate and has never lost a game after losing a piece (yes, 100% win rate after losing a piece!). His tilt factor—how often frustration affects him—is about 49, indicating some human moments but nothing too dramatic.

He's slightly better in rated games compared to casual, up by nearly 20% in win rate, showing the fire of competition fuels his best plays.

The Record Books & Rivalries

Jimmy has battled opponents far and wide (or at least usernames with wild creativity). Some rivals have him stumped (win rates of 0%), while others can’t seem to crack his defenses (100% win rates, like his friend mike2488 and many others).

His longest winning streak is a jaw-dropping 48 games, a feat surely celebrated with silent nods and maybe a trophy—or at least a congratulatory homemade meme.

When Does He Play?

Jimmy is a daytime strategist, with his best win rates between 8 and 14 o'clock and a peak mental sharpness around 17 o'clock (a whopping 62.9% win rate!). He’s definitely not a night owl — in fact, his performance dips after 20:00, so don’t challenge him to a late-night marathon unless you want an easy win.

Final Thoughts

Jimmy Kim is the chess player you want on your team or across the board. Part strategist, part comeback king, and all heart (with a pinch of early resignation flair), he embodies the beautiful chaos of competitive chess. Whether blitz, bullet, or rapid, he's always teaching us that sometimes the best move is the one that surprises everyone—including yourself.