Catherina Siergio

Catherina Siergio (GMDSS)

Meet Catherina Siergio, better known on the chess battlefield as GMDSS — a player whose bullet speed can make even a hummingbird jealous! With peak blitz ratings soaring above 2000 and bullet ratings reaching beyond 1700, Catherina combines sharp tactical awareness with a penchant for daring gambits.

Starting off her journey back in 2011, Catherina quickly amassed thousands of games across bullet, blitz, and rapid formats, racking up over 11,000 bullet wins and nearly 8,000 blitz victories. When she's not launching the infamous Reti Gambit or diving deep into the Dutch Defense, she's probably perfecting her comeback skills — boasting an impressive 80% comeback rate after losing a piece. It’s rumored she once turned a losing attack around so fast, opponents thought their king caught a second wind!

Catherina’s style? Think less "slow grandmaster pondering the 50-move rule," more "a whirlwind of calculated chaos." She averages just under 61 moves per win, meaning she loves a good tussle before delivering the knockout. But be warned — if things go downhill, her tilt factor sits at a modest 18%, so she’s no stranger to the emotional rollercoaster of chess.

Her opening repertoire reads like a grandmaster’s playbook: from the trusty Ruy Lopez Jaenisch Gambit to the crafty Reti Gambit Declined Advance Variation. With win rates hovering near 60% in her favorite lines, it's clear she's got those opening moves locked in tighter than a Queen's defense.

Whether grinding out bullet duels at 2 AM (her optimal chess hour) or dazzling foes in rapid games, Catherina plays with passion and persistence. And if you ever dare face her online under the username GMDSS, prepare for a fight, because this player isn’t just chasing trophies — she’s chasing checkmates with a smile.

Fun Fact

Catherina's longest winning streak is an awe-inspiring 20 games! That's right — 20 consecutive battles won without breaking a sweat. Somewhere, Magnus Carlsen is taking notes.

Recent Games

• Victory by resignation with the Reti Gambit Declined Advance Variation, April 2019: A swift build-up and an elegant finish!
• Ontime win against DanisDonin, April 2019: Sometimes the clock is mightier than the sword!
• Game abandoned but a win nonetheless, April 2019: When the opponent quits, it’s a victory dance.