Overview
Duty Dumbties, known to the chess world as roborob613, is a quick-thinking Bullet specialist who treats the clock like a friendly opponent and the board as a stage for quick wits. A master of rapid-fire decisions, roborob613 keeps the momentum high and the jokes even higher. This bio honors a player whose online legend is built as much on banter as on bold, fast moves. For profile details and a closer look, see Duty Dumbties.
Peak Bullet rating on record: 1722 (2025-02-25).
Playing Style
Duty Dumbties (roborob613) leans into endgames with a practiced sense of timing. Endgame frequency clocks in around 63.6%, and the comeback rate shines at about 77.4%, like a player who treats every mistake as a stepping stone and every mistake made by the opponent as a punchline. The tilt factor sits at 13, which in this story translates to a gentle nudge toward the next clever idea rather than a dramatic meltdown. The best time to challenge this player? 11:00, when sharp minds meet a steady heartbeat.
- Endgame frequency: 63.62%
- Comeback rate: 77.43%
- Tilt factor: 13
- Best time of day to play: 11:00
Openings and Performance
Openings form the playground of roborob613, with a fondness for sharp, dynamic lines in the Bullet arena. Notable high-usage patterns include:
- French Defense: Exchange Variation — 1785 games, Wins 867, Losses 825, Draws 93 (WinRate 48.57%)
- French Defense — 1255 games, Wins 587, Losses 623, Draws 45 (WinRate 46.77%)
- QGD: Chigorin, 3.cxd5 — 818 games, Wins 452, Losses 347, Draws 19 (WinRate 55.26%)
- London System: Poisoned Pawn Variation — 1149 games, Wins 537, Losses 576, Draws 36 (WinRate 46.74%)
Hobbyist favorites also include Amar Gambit and the Colle-related ideas, all played with a grin and a willingness to pivot on a dime. For a quick look at practical games in this style, you can imagine
To explore terms and openings further, see French Defense and QGD: Chigorin within the performance notes.
Career Highlights & Streaks
Duty Dumbties is known for a streaky but resilient career, with notable highs and a sense of humor through the board. Highlights include:
- Longest winning streak: 12 games
- Longest losing streak: 13 games
- Peak Bullet rating: 1722 (2025-02-25)
- Peak Rapid rating: 1861 (2023-02-10)
- Peak Blitz rating: 1687 (2021-10-24)
- Overall drive: a cheerful, relentless pursuit of a better move every turn
Playful Facts
Across days and hours, roborob613 keeps a steady rhythm. Time-performance shows solid win rates throughout the week, with a light preference for daytime play that suits the Bullet mindset. A love of clever endgames and comebacks keeps the board lively, and the occasional pun keeps spirits high.
Notable Opponents
Roaming the online arena, roborob613 has faced many opponents. The most frequent rivals include:
- darcmountain — many battles, many lessons
- fernandessouza
- theparsnip
Record by opponent varies, but the spirit remains: clever play, quick thinking, and a smile after the last blunder.
More About Duty Dumbties
Alias and profile references: Duty Dumbties. This biography nods to a player who treats every clock tick as a chance to surprise, improvise, and occasionally wink at the audience. For a peek into the thrilling, fast-paced world of Bullet chess as played by roborob613, follow the curve of the move and the rhythm of the joke.
Recent performance snapshot
Your data shows a roughly even strength-adjusted win rate, around fifty percent, which means you’re often balanced against your opponents in bullet games. Over the last three months you’ve gained about 79 rating points, suggesting a solid period of improvement. However, the one-month and six-month figures point to some short-term dips and a modest longer-term fluctuation. The twelve-month slope is close to flat, indicating long-term momentum hasn’t shifted strongly yet. In bullet play, consistency and quick, accurate decisions tend to drive longer-term progress, so anchoring your routine around steady practice will help maintain momentum.
Openings performance highlights
You’ve used a mix of openings with varying success. Here are some notable patterns from your recent openings results:
- QGD: Chigorin, 3.cxd5 — strong performance, winning about 55% of those games (818 games). This suggests you handle the Open Queen's Gambit Declined structures well when you follow the standard. Consider continuing to refine the typical middlegame plans you reach from this line.
- French Defense: Advance Variation — solid results, around 52% win rate. This shows you can handle the space and typical pawn leverages in this line.
- French Defense: Exchange Variation — about 49% win rate. It’s workable, but you may want to complement this with a second favored option to avoid overreliance on a single structure.
- Colle System and similar solid setups (e.g., Colle System: Rhamphorhynchus Variation) show near 49% to 50% win rate—good for bullet, but there’s room to push a bit more with precise middlegame plans.
- Mixtures like London System: Poisoned Pawn Variation and QGD sub-branches show mid-range performance; you’re comfortable in these quiet, positional corridors but can improve with sharper lines or targeted tactical drills to convert more of these positions.
Overall, you tend to perform better in lines that lead to clear, concrete plans and straightforward piece activity. Consider reinforcing 1-2 opening families that align with your style and building a compact, repeatable plan for the first 15 moves.
Strength-adjusted win rate interpretation
Your strength-adjusted win rate sits around 0.501, which indicates you are operating near an even field against typical bullet opponents. A practical goal is to push this into the low 0.55s by tightening your preparation in your top openings and increasing your pattern recognition for common tactical motifs that arise in bullet games.
Rating trends and momentum
Momentum across timeframes is mixed:
- 1 month: slight decrease in rating (-22).
- 3 months: noticeable improvement (+79).
- 6 months: small overall decrease (-42).
- 12 months: slower, near-flat trend (very gradual slope).
In short, you have a burst of improvement over the last three months, but the longer horizon shows more fluctuation. A practical focus is to convert that short-term momentum into a steadier month-to-month gain by sticking to a simple, repeatable training plan and reducing sudden shifts in opening choice or risk in the middle game.
Actionable improvement plan
- Consolidate 1-2 openings: Prioritize QGD: Chigorin, 3.cxd5 and French Advance Variation as your core, and prepare a secondary plan (e.g., a reliable Colle/Queen's Pawn setup) to avoid overexposure to a single structure.
- Pattern-based training: Spend 20 minutes daily on tactic puzzles focusing on common bullet motifs (forks, pins, back-rank ideas, and simple mating nets). This supports fast, accurate decisions under time pressure.
- Endgame awareness in bullet: Practice converting small advantages into a win. Work on faster queenless endgames and king activity drills so you can press a tiny edge efficiently when you’re short on time.
- Time-management discipline: Adopt a lightweight pre-move strategy for safe, routine positions and a strict 4- to 6-move quick-check for unfamiliar lines. Reserve deeper calculation for critical moments rather than rush decisions.
- Review and reflect: After each bullet session, tag one or two key learning points from the opening phase and one defensive resource you can rely on when your opponent challenges your plan.
Starter next steps you can try
To begin applying these tips, you could:
- Align your next 10-15 bullet games with your top two openings and track wins/losses to see how your consistency improves.
- Include a 15-minute post-game review focusing on where you could have simplified or pressed more effectively in the middlegame.
- Incorporate short, focused drills (5-10 minutes) on tactical themes that frequently occur in your usual bullet middlegames.
Quick reference (optional)
Placeholder for quick PGN review or named openings you want to bookmark as you implement this plan. If you want, I can generate a concise, personalized PGN digest from your recent games to highlight recurring patterns.
🆚 Opponent Insights
| Recent Opponents | ||
|---|---|---|
| Juraj Janosik | 1W / 2L / 0D | |
| theolddo9 | 0W / 4L / 0D | |
| amirkhorrami1360 | 0W / 1L / 0D | |
| fleaship | 4W / 3L / 0D | |
| jcrchess | 2W / 2L / 0D | |
| mathgk | 1W / 1L / 0D | |
| saeedjr | 0W / 1L / 0D | |
| zockata | 0W / 2L / 0D | |
| 0jml4 | 1W / 2L / 0D | |
| derickorusher | 2W / 1L / 0D | |
| Most Played Opponents | ||
|---|---|---|
| darcmountain | 15W / 8L / 3D | |
| fernandessouza | 10W / 6L / 1D | |
| chessvb | 6W / 9L / 1D | |
| theparsnip | 8W / 7L / 1D | |
| mirso52 | 3W / 11L / 1D | |
Rating
| Year | Bullet | Blitz | Rapid | Daily |
|---|---|---|---|---|
| 2025 | 1655 | 1200 | ||
| 2024 | 1650 | 1599 | 1551 | |
| 2023 | 1545 | 1612 | 1200 | |
| 2022 | 1512 | 1595 | ||
| 2021 | 1603 | 1621 | 1561 |
Stats by Year
| Year | White | Black | Moves |
|---|---|---|---|
| 2025 | 674W / 764L / 42D | 622W / 791L / 59D | 60.8 |
| 2024 | 792W / 921L / 62D | 794W / 924L / 64D | 59.9 |
| 2023 | 623W / 664L / 46D | 604W / 658L / 55D | 61.4 |
| 2022 | 709W / 707L / 57D | 688W / 749L / 61D | 60.7 |
| 2021 | 1147W / 1161L / 72D | 1180W / 1132L / 88D | 58.3 |
Openings: Most Played
| Bullet Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| French Defense: Exchange Variation | 1785 | 867 | 825 | 93 | 48.6% |
| French Defense | 1256 | 588 | 623 | 45 | 46.8% |
| London System: Poisoned Pawn Variation | 1151 | 539 | 576 | 36 | 46.8% |
| French Defense: Advance Variation | 882 | 456 | 403 | 23 | 51.7% |
| QGD: Chigorin, 3.cxd5 | 818 | 452 | 347 | 19 | 55.3% |
| French Defense: Classical Variation, Svenonius Variation | 689 | 303 | 364 | 22 | 44.0% |
| Colle System: Rhamphorhynchus Variation | 619 | 306 | 289 | 24 | 49.4% |
| Amazon Attack | 537 | 257 | 260 | 20 | 47.9% |
| QGD: 3.Nc3 Bb4 | 401 | 172 | 215 | 14 | 42.9% |
| Australian Defense | 388 | 191 | 184 | 13 | 49.2% |
| Daily Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| French Defense | 1 | 0 | 1 | 0 | 0.0% |
| Amar Gambit | 1 | 1 | 0 | 0 | 100.0% |
| London System: Poisoned Pawn Variation | 1 | 1 | 0 | 0 | 100.0% |
| Blitz Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| French Defense: Exchange Variation | 7 | 3 | 4 | 0 | 42.9% |
| French Defense | 6 | 3 | 2 | 1 | 50.0% |
| French Defense: Advance Variation | 3 | 1 | 2 | 0 | 33.3% |
| QGD: Chigorin, 3.cxd5 | 3 | 3 | 0 | 0 | 100.0% |
| Modern Defense | 2 | 2 | 0 | 0 | 100.0% |
| French Defense: Classical Variation, Svenonius Variation | 2 | 1 | 1 | 0 | 50.0% |
| Grünfeld Defense: Counterthrust Variation | 2 | 1 | 1 | 0 | 50.0% |
| QGD: 3.Nc3 Bb4 | 2 | 0 | 2 | 0 | 0.0% |
| Semi-Slav Defense Accepted | 2 | 1 | 1 | 0 | 50.0% |
| Slav Defense | 1 | 1 | 0 | 0 | 100.0% |
| Rapid Opening | Games | Wins | Losses | Draws | Win Rate |
|---|---|---|---|---|---|
| French Defense: Advance Variation | 5 | 2 | 3 | 0 | 40.0% |
| London System: Poisoned Pawn Variation | 2 | 0 | 1 | 1 | 0.0% |
| QGD: 3.Nc3 Bb4 | 2 | 1 | 1 | 0 | 50.0% |
| English Opening: Symmetrical Variation, Four Knights Variation | 2 | 0 | 2 | 0 | 0.0% |
| Amar Gambit | 2 | 2 | 0 | 0 | 100.0% |
| Amazon Attack | 2 | 0 | 1 | 1 | 0.0% |
| QGD: 2...Bf5 3.cxd5 | 1 | 0 | 1 | 0 | 0.0% |
| QGD: 4.Bg5 Be7 5.cxd5 Nxd5 | 1 | 1 | 0 | 0 | 100.0% |
| Nimzo-Indian Defense | 1 | 0 | 1 | 0 | 0.0% |
| King's Indian Defense: Fianchetto Variation, Classical Variation | 1 | 0 | 1 | 0 | 0.0% |
🔥 Streaks
| Streak | Longest | Current |
|---|---|---|
| Winning | 12 | 0 |
| Losing | 13 | 2 |