Roberto Lopez (aka RoLoSa)
Roberto Lopez is a chess player whose career is nothing short of a biological marvel—thriving through the natural selection of countless blitz battles and adapting his tactics like a true chess chameleon. Known online as RoLoSa, he’s been cultivating his chess garden since at least 2017, navigating opening gambits and tactical thickets with a stats-driven precision that would impress even the most studious entomologist.
Career Evolution
Roberto's rating has experienced the inevitable ebb and flow of an evolutionary fitness curve. His blitz ratings peaked around 1185 in 2020, showing a resilience akin to a tadpole's transformation into a crafty frog — a bit slippery but full of potential. His rapid chess moves reveal a spike in 2024 with a peak rating of 1386, proving that sometimes fast evolution yields the strongest specimens in the game.
Playing Style
With an 1.37% early resignation rate, Roberto prefers to stay in the game — much like a determined bacteria resisting antibiotics. His games tend to last an average of 64 moves when he wins, and about 70 moves when he loses, indicating a deep dive into complex cells of strategy before the final checkmate. His endgame frequency clocks in at an impressive 71.9%, where he morphs into a cunning predator, closing down opportunities for opponents.
He's equally formidable with both white (almost 51% win rate) and black (over 45%). Just like a species that has mastered survival in both day and night cycles, RoLoSa capitalizes on positional opportunities whether starting with the initiative or defending against it.
Tactical Awareness and Psychological Resilience
With a comeback rate above 79% and a perfect 100% win rate after losing a piece, Roberto is a master of regeneration—akin to a starfish that can regrow its limbs under pressure. His tilt factor is relatively low at 10, indicating strong mental fortitude; when the molecular chaos of losing pieces or blunders arises, he keeps his cool like a cell repairing DNA damage.
Signature Openings
The Queen's Pawn Opening – Chigorin Variation is Roberto’s evolutionary niche, boasting a win rate above 52% in blitz games alone. Whether facing Philidor defenses or fighting through the Englund Gambit, his play is a blend of adaptability and aggression—qualities that would make any biological experiment envy his survival tactics.
Competitive Habitat
RoLoSa plays most actively on blitz and bullet platforms, having played thousands of blitz games with a near even split of wins and losses, illustrating the chaotic yet balanced ecosystem of the speed chess world. His peak bullet rating reached 1440, showing lightning-fast reflexes that put any other eukaryotic organism to shame.
Fun Fact
Roberto’s highest winning streak is a string of 13 victories—like a genetic mutation spreading rapidly through a population before natural predators have a chance to intervene. Currently, he's on a winning streak of 3, so watch out—this chromosome might just be about to replicate anew!
Always in pursuit of checkmates and evolutionary dominance, Roberto Lopez remains a fascinating specimen in the vast biosphere of chess enthusiasts, proving that with enough grit and pawns, even the smallest genome can conquer the board.
Hi Roberto (“RoLoSa”) – Feedback From Your Coach
Your recent games show solid progress: you’ve gone from hanging pieces regularly to putting together attacking ideas that deliver checkmate (see move 40 of your Philidor win
1. What You’re Doing Well
- Tactical Vision: You spot loose pieces and mating nets (e.g., 29.Qa7+ in the QGD Chigorin game and 32.Rxf7+ in your QGD loss attempt).
- Active King Safety Awareness (as Black): In several Philidor games you castle quickly and keep your rook pair connected.
- Resilience in Practical Play: Many wins come from out-playing opponents in time trouble or complicated positions—good fighting spirit.
2. Highest Priorities to Improve
- Development Before Pawn Grabs.
Example: In the loss to imlaaz you played 15.Rfb1 & 16.Rb5 before your light-squared bishop left c1; Black seized the initiative.
Rule of thumb: If two pieces aren’t developed, avoid second-move rook adventures. - Calculate Checks, Captures & Threats Every Move.
Most of your decisive blunders are one-move tactics (e.g., 37…c4?? in the Bb2 Larsen game allowed 38.Qh7#). Before playing, quickly scan forcing moves—this habit alone could add 100+ rating points. - Endgame Technique.
Games vs. jojotayong and FFleischer19 reached winning pawn endgames but took many extra moves. Study basic king-and-pawn and rook endgames 15 minutes a day. - Time Management.
You usually enter move 20 with <2 minutes. Try the “30-10-10” rule to keep 1 minute in reserve for every 10 moves.
3. Opening Guide
Your current repertoire is narrow—mostly 1.d4/2.e3 as White and the Philidor as Black. That’s fine, but apply core principles:
- Stop playing
h6on move 3 in the Philidor; it wastes a tempo and weakens g6. Try the main line:3…Nf6 4.Nc3 Nbd7. - With White, the “Colle-Zukertort” setup (d4–e3–Nf3–Bd3–b3–Bb2) fits your style and avoids early piece trades.
- Memorisation isn’t needed; understand ideas: center control, rapid development, safe king.
4. Middlegame Themes To Practice
- Minor-Piece Imbalances: In multiple games you swapped a strong knight for a bad bishop (e.g., 15.Nxd5? vs. Mandar_Sawant). Before exchanging ask: “What does my piece do in five moves?”
- Open Files for Rooks: Your best attacks (Philidor wins) came when doubled rooks hit the
e-orh-file. Make it a goal each game: “Open one file for my rooks by move 20.”
5. Endgame Checklist
Use this whenever queens are off:
- Activate king (center it).
- Put rooks behind passed pawns (Tarrasch rule).
- Create passed pawn on the side where you’re stronger.
6. Training Plan (4 Weeks)
| Day | Task | Minutes |
|---|---|---|
| Mon–Fri | 10 rated 3|0 games (focus on openings) | 30 |
| Daily | Tactics drills (Chess.com “Puzzle Rush” or similar) | 15 |
| 3×/week | Endgame study (pawn & rook basics) | 20 |
| Weekend | Review two of your own games without engine, then with engine | 40 |
7. Motivational Snapshot
- Current blitz peak: 1331 (2017-12-28)
- Activity pattern:
- Best tactical performance hour:
8. Quick Tips Before You Play
- Warm-up with three tactics puzzles.
- Write a mini-plan after move 10 (even mentally): “Finish development, target e6” etc.
- When under attack, use the DEF method: Deflect (trade attackers), Evade (king safety), Fight back (counter-threat).
Keep grinding, Roberto! Your tactical eye already wins games. Combine it with consistent development and endgame fundamentals and you’ll break 1000+ in no time.
Coach
🆚 Opponent Insights
| Recent Opponents | ||
|---|---|---|
| imtiaz54 | 1W / 0L / 0D | |
| tojiboyevqobil | 0W / 1L / 0D | |
| nightmares-n | 0W / 1L / 0D | |
| trashtalkingragequitter | 0W / 1L / 0D | |
| jaemscral | 1W / 0L / 0D | |
| spanmann | 0W / 1L / 0D | |
| mohamed102040 | 1W / 1L / 0D | |
| udechukwuchigozie | 1W / 0L / 0D | |
| bctekipp | 0W / 1L / 0D | |
| morteza-anbaran | 1W / 0L / 0D | |
| Most Played Opponents | ||
|---|---|---|
| rotanpemukulkasur | 5W / 5L / 0D | |
| vaitsis69 | 3W / 4L / 0D | |
| sanhbk | 0W / 6L / 0D | |
| chadwick0505 | 3W / 2L / 0D | |
| goodsir711 | 2W / 3L / 0D | |
Rating
| Year | Bullet | Blitz | Rapid | Daily |
|---|---|---|---|---|
| 2025 | 881 | |||
| 2024 | 802 | 1386 | 1126 | |
| 2023 | 465 | 875 | 1161 | |
| 2022 | 947 | 1303 | ||
| 2021 | 870 | |||
| 2020 | 830 | 1050 | 1239 | |
| 2019 | 734 | 1036 | 1239 | 1219 |
| 2018 | 868 | 1011 | 1131 | 1267 |
| 2017 | 1004 | 1140 |
Stats by Year
| Year | White | Black | Moves |
|---|---|---|---|
| 2025 | 565W / 531L / 29D | 535W / 561L / 24D | 67.4 |
| 2024 | 695W / 583L / 42D | 573W / 690L / 42D | 71.1 |
| 2023 | 810W / 758L / 38D | 739W / 829L / 41D | 64.5 |
| 2022 | 422W / 383L / 41D | 393W / 420L / 43D | 71.8 |
| 2021 | 436W / 354L / 40D | 335W / 437L / 41D | 72.9 |
| 2020 | 473W / 412L / 34D | 422W / 467L / 41D | 69.7 |
| 2019 | 340W / 341L / 22D | 343W / 349L / 25D | 68.7 |
| 2018 | 241W / 218L / 16D | 215W / 253L / 15D | 66.9 |
| 2017 | 8W / 9L / 0D | 7W / 9L / 0D | 62.6 |
Openings: Most Played
| Blitz Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Amazon Attack | 4460 | 2300 | 1985 | 175 | 51.6% |
| Philidor Defense | 2618 | 1167 | 1354 | 97 | 44.6% |
| Australian Defense | 1343 | 659 | 636 | 48 | 49.1% |
| Barnes Opening: Walkerling | 687 | 315 | 335 | 37 | 45.9% |
| London System: Poisoned Pawn Variation | 445 | 191 | 237 | 17 | 42.9% |
| Amar Gambit | 430 | 216 | 204 | 10 | 50.2% |
| Amazon Attack: Siberian Attack | 385 | 189 | 178 | 18 | 49.1% |
| Diemer-Duhm Gambit (DDG): 4...f5 | 261 | 122 | 135 | 4 | 46.7% |
| Bishop's Opening: 3.d3 | 196 | 78 | 109 | 9 | 39.8% |
| Bishop's Opening | 185 | 78 | 102 | 5 | 42.2% |
| Rapid Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Amazon Attack | 5 | 2 | 3 | 0 | 40.0% |
| Unknown | 1 | 1 | 0 | 0 | 100.0% |
| Four Knights Game: Spanish Variation | 1 | 1 | 0 | 0 | 100.0% |
| Scotch Game | 1 | 1 | 0 | 0 | 100.0% |
| Dutch Defense | 1 | 0 | 1 | 0 | 0.0% |
| French Defense: Classical Variation, Svenonius Variation | 1 | 0 | 1 | 0 | 0.0% |
| Amar Gambit | 1 | 0 | 1 | 0 | 0.0% |
| Petrov's Defense | 1 | 0 | 1 | 0 | 0.0% |
| Daily Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Dutch Defense | 19 | 9 | 10 | 0 | 47.4% |
| Amazon Attack | 17 | 5 | 11 | 1 | 29.4% |
| Philidor Defense | 7 | 1 | 6 | 0 | 14.3% |
| Unknown | 6 | 6 | 0 | 0 | 100.0% |
| Australian Defense | 5 | 5 | 0 | 0 | 100.0% |
| Amar Gambit | 4 | 2 | 2 | 0 | 50.0% |
| Center Game: Berger Variation | 2 | 1 | 1 | 0 | 50.0% |
| Blackburne Shilling Gambit | 2 | 0 | 2 | 0 | 0.0% |
| Barnes Defense | 1 | 1 | 0 | 0 | 100.0% |
| Barnes Opening: Walkerling | 1 | 0 | 1 | 0 | 0.0% |
| Bullet Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| Amazon Attack | 281 | 143 | 136 | 2 | 50.9% |
| Philidor Defense | 177 | 92 | 85 | 0 | 52.0% |
| Australian Defense | 150 | 66 | 84 | 0 | 44.0% |
| Barnes Opening: Walkerling | 64 | 35 | 28 | 1 | 54.7% |
| Amar Gambit | 41 | 15 | 25 | 1 | 36.6% |
| London System: Poisoned Pawn Variation | 34 | 16 | 18 | 0 | 47.1% |
| Barnes Defense | 21 | 10 | 11 | 0 | 47.6% |
| Bishop's Opening | 19 | 9 | 10 | 0 | 47.4% |
| Bishop's Opening: 3.d3 | 19 | 9 | 9 | 1 | 47.4% |
| Center Game: Berger Variation | 17 | 6 | 11 | 0 | 35.3% |
🔥 Streaks
| Streak | Longest | Current |
|---|---|---|
| Winning | 13 | 1 |
| Losing | 10 | 0 |