Avatar of Jon Viktor Gunnarsson

Jon Viktor Gunnarsson IM

Username: morfius

Location: Reykjavik

Playing Since: 2008-07-11 (Active)

Wow Factor: ♟♟♟♟

Chess.com

Rapid: 2381
10W / 6L / 1D
Blitz: 2678
1020W / 773L / 235D
Bullet: 2301
9W / 4L / 1D

Jon Viktor Gunnarsson (morfius)

International Master Extraordinaire

Jon Viktor Gunnarsson, known to the chess world as morfius, is an International Master, a title that signifies he’s no stranger to outwitting opponents on 64 squares. Blessed with a razor-sharp tactical eye and a penchant for comebacks, morfius dances through the chaos of blitz battles like a grandmaster in disguise.

Chess Style & Skills

With an impressive average game length pushing almost 80 moves, Jon is clearly a strategist who loves the long haul—slowly squeezing victory from the jaws of the endgame. His early resignation rate is delightfully low (a humble 1.84%), proving he’s stubborn to a fault, fighting on even when the skies look grim. Tactical awareness? Outstanding. An 88% comeback rate and nearly half of his wins come after losing a piece. Talk about resilience!

Whether wielding the white or black pieces, morfius maintains a steady winning rate of about 51% and 50%, respectively. Moves per win and loss are quite similar, showing consistency — no frantic blitzing here, just cool-headed calculation peppered with bursts of tactical brilliance.

Performance Highlights

  • Peak Blitz Rating: A blistering 2776 in March 2025 — enough to terrify most casual players and even some titled veterans.
  • Peak Rapid Rating: 2758, with a dash of unpredictability adding spice to his rapid games.
  • Peak Bullet Rating: 2348, proving lightning-fast instincts in the shortest time controls.
  • Longest Winning Streak: 26 consecutive wins — like a chess machine greased with pure determination.

Competition & Rivalries

Though Jon’s opponent list reads like a who’s who of online chess handles, a few names stand out — frequent battles with burbur555 and ernestoguevaralynch (both 17 encounters) have sharpened his competitive edge. His win rates against some opponents reach a perfect 100%, indicating a cold-blooded streak when it comes to maintaining superiority.

Recent Adventures

In April 2025, morfius showcased his mastery of the Nimzowitsch-Larsen Attack (English Variation) with a memorable win over Oberon008, executing a strategic endgame marathon culminating in a victorious passed pawn push. On less victorious days, such as a tough loss in the English Opening against panesetcircenes by checkmate, morfius respects the beauty of chess’ unpredictability — and then gets back to the drawing board with a grin.

Fun Facts

  • Jon's best hour to play? 11:00 AM sharp. Not a morning person? Chess demands otherwise!
  • His tilt factor is impressively low (10), meaning he keeps his cool when the stakes are high — no keyboard smashing here.
  • Winning by resignation is his go-to, showing opponents he's often so convincing they throw in the towel early.

In the grand chessboard of life, Jon Viktor Gunnarsson is a cunning tactician, a stalwart competitor, and a player who combines stubborn endurance with flashes of brilliance. Whether blitzing at breakneck speed or crafting patient plans in rapid time controls, morfius is truly a master of his craft — and likely a nightmare to face over the board.


Coach's Avatar

Positives from Your Recent Games

Jon Viktor, you showed strong strategic understanding and tactical awareness in your recent blitz matches.

  • You handled complex opening systems well, especially solid setups in the English Opening and Sicilian Defense, converting those into promising middlegame positions.
  • Excellent use of central control and piece activity helped you gain the initiative in several games.
  • Good endgame technique was visible, as you managed to create and capitalize on weaknesses effectively.
  • Your ability to navigate pressure and maintain focus in critical moments contributed to quality wins and tight defenses.
  • Consistent decision-making with developing pieces harmoniously and controlling key squares was a strength, especially seen in your use of minor piece coordination.

Areas to Focus on for Improvement

To keep improving and raise your blitz performance, consider concentrating on the following:

  • Time Management: Some losses and close games might be tied to time pressure. Practice pacing during blitz games to avoid rushed moves in critical positions.
  • Opening Consistency: While your openings are strong, varying your repertoire can help to avoid predictability. Study alternative lines within your main openings like the Caro-Kann and Sicilian Defense to expand your options.
  • Handling Counterattacks: Your recent losses suggest paying extra attention to your opponent’s tactical shots and counterplay, especially in positions where your pieces are active but can become targets.
  • Calculate Tactical Lines More Precisely: Increasing calculation depth and verifying forcing sequences could reduce errors and missed winning opportunities, which appear occasionally.
  • Middlegame Planning: Try to formulate clearer long-term plans when transitioning from opening to middlegame, to improve your strategic positioning and exploit opponent weaknesses better.

Focus on Openings With Strong Win Rates

Based on your performance data, sharpening your expertise in openings where you have above 55% win rates could yield more wins:

  • Amazon Attack: Siberian Attack - solid success; consider deepening your understanding and variant knowledge.
  • Sicilian Defense including Najdorf and Accelerated Dragon variations - continue refining these aggressive openings for tactical battles.
  • Italian Game: Two Knights Defense and Barnes Defense - successful for you; study trap ideas and common plans here to keep opponents under pressure.

Rating and Development Insights

Your rating trend is generally positive in the short term, with a stable slope over the last 1 and 3 months, indicating incremental improvement. Although the 6-month trend shows a dip, your resilience and recent form suggest you are regaining momentum.

  • Strength adjusted win rate near 50% shows solid overall performance, but also room to convert more games into wins.
  • Balancing aggressive openings with solid defense can improve your consistency further.
  • Maintaining focus on time management and refining your calculation can support smoother rating progress.

Final Tips

  • Review your losses critically, especially positions where you faced unexpected counterattack moves. This will help patch tactical blind spots.
  • Train with slower time controls when possible to explore deep ideas and positional plans that you can carry over into blitz.
  • Keep working on your endgame skills—small advantages in blitz often decide games.
  • Use your strong opening lines as springboards, but don’t be afraid to experiment occasionally to surprise your opponents.
  • Stay confident. Your solid track record shows you have excellent tools to climb higher with targeted effort.


🆚 Opponent Insights

Most Played Opponents
ErnestoGuevaraLynch 11W / 4L / 2D
Vladimir Burmakin 9W / 6L / 2D
gmarkovic21 9W / 7L / 0D
viggi38 10W / 5L / 1D
krujjster 6W / 5L / 4D

Rating

Year Bullet Blitz Rapid Daily
2025 2678
2024 1522 2381
2023 2643 2354
2022 2702
2021 2633
2020 2546 2242
2019 2151 2569 2438
2018 2124 2585 2460
2017 2000 2522 2457
Rating by Year20172018201920202021202220232024202527021522YearRatingBulletBlitzRapid

Stats by Year

Year White Black Moves
2025 107W / 85L / 22D 105W / 77L / 31D 82.0
2024 61W / 44L / 8D 58W / 45L / 8D 73.4
2023 100W / 74L / 29D 95W / 81L / 19D 83.6
2022 25W / 15L / 4D 24W / 18L / 2D 83.2
2021 13W / 14L / 4D 19W / 14L / 3D 74.7
2020 78W / 37L / 15D 84W / 34L / 8D 72.0
2019 152W / 114L / 40D 131W / 124L / 45D 85.9
2018 23W / 18L / 2D 18W / 18L / 4D 85.4
2017 16W / 2L / 5D 11W / 7L / 2D 85.4

Openings: Most Played

Blitz Opening Games Wins Losses Draws Win Rate
Amazon Attack: Siberian Attack 76 44 25 7 57.9%
French Defense 71 38 25 8 53.5%
Benko Gambit 63 36 19 8 57.1%
Sicilian Defense 63 36 23 4 57.1%
Caro-Kann Defense 57 20 25 12 35.1%
Sicilian Defense: Najdorf Variation 54 28 17 9 51.9%
Amazon Attack 49 24 17 8 49.0%
Barnes Defense 44 27 15 2 61.4%
Sicilian Defense: Accelerated Dragon, Maróczy Bind 43 22 13 8 51.2%
Italian Game: Two Knights Defense 42 26 14 2 61.9%
Rapid Opening Games Wins Losses Draws Win Rate
French Defense 4 2 1 1 50.0%
Amar Gambit 3 2 1 0 66.7%
Caro-Kann Defense 3 1 2 0 33.3%
Italian Game: Two Knights Defense 2 0 1 1 0.0%
English Opening: Symmetrical Variation 2 1 0 1 50.0%
Barnes Opening: Walkerling 2 1 0 1 50.0%
Sicilian Defense 2 0 2 0 0.0%
Benko Gambit 2 1 1 0 50.0%
Sicilian Defense: Closed 2 1 1 0 50.0%
Caro-Kann Defense: Two Knights Attack, Mindeno Variation 2 2 0 0 100.0%
Bullet Opening Games Wins Losses Draws Win Rate
Barnes Defense 2 0 2 0 0.0%
Caro-Kann Defense: Exchange Variation 1 1 0 0 100.0%
Unknown 1 1 0 0 100.0%
Colle System: Rhamphorhynchus Variation 1 1 0 0 100.0%
Sicilian Defense: Accelerated Dragon, Exchange Variation 1 0 0 1 0.0%
Elephant Gambit 1 0 1 0 0.0%
Bird Opening: Dutch Variation 1 1 0 0 100.0%
English Opening: Symmetrical Variation, Botvinnik System 1 0 1 0 0.0%
Sicilian Defense 1 1 0 0 100.0%
Alekhine Defense 1 1 0 0 100.0%

🔥 Streaks

Streak Longest Current
Winning 26 0
Losing 10 1