Avatar of Jon Ludvig Hammer

Jon Ludvig Hammer GM

Username: gmjlh

Location: Oslo

Playing Since: 2009-07-10 (Inactive)

Wow Factor: ♟♟♟♟

Chess.com

Rapid: 2455
299W / 33L / 39D
Blitz: 2820
3537W / 1261L / 384D
Bullet: 2953
4967W / 1229L / 313D

Grandmaster Jon Ludvig Hammer

Meet Jon Ludvig Hammer, better known in the chess world as gmjlh, a true wizard of the 64 squares. Awarded the prestigious title of Grandmaster by FIDE, Jon Ludvig is no stranger to tactical wizardry and fierce competition.

Starting his blitz journey with a humble rating of 1656 back in 2010, Jon Ludvig quickly escalated the ranks to hit a blazing peak blitz rating of 2945 in April 2023. He's also a speed demon in bullet chess, having achieved a peak rating of 3070 in November 2020 — which may or may not be linked to some undisclosed caffeine intake.

His rapid rating peaked at a respectful 2754 in August 2019, demonstrating his versatile mastery across all time controls. With a career total of thousands of games, Jon Ludvig boasts a lightning-fast comeback rate of nearly 81%, proving that losing a piece is never a death sentence if you keep your cool — and your queen ready.

Not only is his brain sharp, but his instincts are sharp too: his longest winning streak is an astounding 71 games, and he is currently riding a 14-game winning spree. His opponents might want to bring their A-game — or a crystal ball.

Playing Style & Personality

Jon Ludvig averages around 72 moves per win, which tells us he enjoys the long strategic battles as much as flashy tactical fireworks. His win rates with white and black pieces hover impressively above 70%, showing no color bias — just pure, relentless chess.

With an early resignation rate of under 4%, he is not one to throw in the towel unless the position is truly hopeless. Outside the arena, Hammer is known for his engaging personality, sometimes throwing in a cheeky grin when he’s just swept the board clean.

Recent Performance Highlights

In his latest clash against Alexandra Botez in March 2025, Jon Ludvig displayed his trademark resilience, clinching victory by resignation after a methodical and precise kingside assault involving queenside control and timely tactical strikes. You can replay this masterpiece here, where every move feels like a stroke of calculated genius.

Opponent Insights

Jon Ludvig has faced top competitors like Alex Botez, GM Krikor, and Georg Meier multiple times, often gaining the upper hand with a win rate north of 65% against most of his frequent rivals. Beware if you find yourself on his opponent list — he’s lethal with a subtlety that can’t be easily anticipated.

Fun Fact

The mysterious “Top Secret” opening he played in over 6,000 blitz games with almost 70% win rate suggests he might just be holding back some super-powered strategies for the World Championship — or at least for his next stream.

In short: whether it’s bullet, blitz, or rapid, Jon Ludvig Hammer is a chess beast balancing tactical ferocity with strategic elegance, seasoned with a hint of playful genius. If chess was a melody, he'd be the composer and the grand conductor.


Coach Chesswick's Profile Photo
Coach Chesswick

Constructive Feedback for Jon Ludvig Hammer

Jon Ludvig, your recent games show strong strategic understanding and an ability to control the center, especially in your wins where you effectively employed pawn breaks and piece activity. Your handling of complex middlegame positions is commendable, demonstrating good calculation and patience.

Strengths

  • Opening Preparation: You choose solid and flexible openings, such as the Modern Defense and King's Fianchetto structures, allowing you to reach playable middlegame positions where your understanding shines.
  • Positional Play: Your moves like 8.e5 and controlling key central squares have been effective. You also display good coordination between your heavy and minor pieces when building pressure.
  • Endgame Technique: Your wins show confident conversion in simplified positions, utilizing passed pawns and active king positioning adeptly.

Areas for Improvement

  • Time Management: In some losses, time pressure appeared to affect your decision-making, such as the game against schmetterling64 where you lost on time. Managing your clock better during critical moments will help maintain accuracy.
  • Avoiding Overextension: Watch for positions where you push pawns aggressively (e.g., advancing f- or h-pawns) without sufficient backup; occasionally, these moves can weaken your king's safety or lose tactical battles.
  • Calculation Precision in Complex Positions: The losses against strong opposition often involved critical tactical moments where deeper calculation could have changed the evaluation. Reviewing these moments and practicing calculation drills can sharpen this skill.

Suggested Focus Areas

  1. Practice increment or rapid games to improve your time management under pressure.
  2. Analyze games to identify moments when pawn advances create weaknesses, and consider prophylactic moves.
  3. Study tactical motifs related to common middlegame structures you play.

Keep building on your strong positional foundation and endgame technique, and with focused effort on tactical clarity and time control, you'll continue to improve.

Here is your most recent victory sequence for reference:

[Event "Live Chess"]
[Site "Chess.com"]
[Date "2025.03.20"]
[White "gmjlh"]
[Black "AlexandraBotez"]
[Result "1-0"]

1. g3 g6 2. Bg2 Bg7 3. e3 d5 4. d4 c6 5. c4 Nf6 6. cxd5 cxd5 7. Nc3 O-O 8. Nge2 Nc6 9. O-O Bf5 10. Nf4 e6 11. h3 g5 12. Nh5 Nxh5 13. Qxh5 Bg6 14. Qd1 Rb8 15. Bd2 h5 16. Rc1 h4 17. gxh4 gxh4 18. Qg4 Bf5 19. Qe2 Kh7 20. Kh2 Bg6 21. Rg1 Qd6+ 22. f4 Bh6 23. Bf3 Rg8 24. Nb5 Qd7 25. Nc3 Bf5 26. Bg4 Bxg4 27. hxg4 Qe7 28. g5 Bg7 29. Qh5+ 1-0


🆚 Opponent Insights

Most Played Opponents
Alexandra Botez 249W / 10L / 6D View Games
Johan-Sebastian Christiansen 61W / 60L / 13D View Games
Georg Meier 26W / 47L / 28D View Games
Andrew Tang 25W / 51L / 9D View Games
Krikor Sevag Mekhitarian 45W / 34L / 6D View Games

Rating

Year Bullet Blitz Rapid Daily
2025 2953 2820
2024 2898 2656
2023 2897 2750 2455
2022 2962 2853 2555
2021 2923 2787 2654
2020 2889 2785 2625
2019 2798 2652 2754
2018 2859 2670 2675
2017 2765 2610 2651
2016 2854 2638
2015 2874 2572
2014 2526
2013 2777 2506
2012 2760 2536
2011 2958 2128
2010 2941 2133 1200
Rating by Year201020112012201320142015201620172018201920202021202220232024202529621200YearRatingBulletBlitzRapid

Stats by Year

Year White Black Moves
2025 108W / 51L / 9D 96W / 62L / 11D 81.7
2024 176W / 124L / 20D 180W / 111L / 29D 84.5
2023 287W / 108L / 32D 288W / 111L / 23D 80.4
2022 759W / 140L / 47D 728W / 154L / 54D 78.7
2021 393W / 94L / 37D 369W / 128L / 34D 80.1
2020 196W / 50L / 20D 186W / 64L / 24D 83.6
2019 755W / 147L / 46D 753W / 148L / 46D 73.0
2018 1411W / 359L / 99D 1360W / 386L / 99D 73.7
2017 204W / 55L / 16D 180W / 82L / 11D 82.4
2016 207W / 69L / 19D 185W / 79L / 26D 75.9
2015 36W / 18L / 7D 38W / 13L / 5D 92.3
2014 12W / 1L / 2D 8W / 4L / 2D 90.6
2013 28W / 6L / 2D 25W / 7L / 3D 74.5
2012 386W / 104L / 24D 373W / 111L / 30D 81.8
2011 42W / 15L / 2D 43W / 10L / 2D 75.5
2010 89W / 5L / 1D 88W / 3L / 2D 74.6

Openings: Most Played

Blitz Opening Games Wins Losses Draws Win Rate
Caro-Kann Defense 441 299 116 26 67.8%
Unknown 258 179 78 1 69.4%
Amazon Attack: Siberian Attack 167 114 38 15 68.3%
Ruy Lopez: Berlin Defense, Berlin Wall 120 76 22 22 63.3%
London System: Poisoned Pawn Variation 118 80 28 10 67.8%
Amar Gambit 105 87 16 2 82.9%
Diemer-Duhm Gambit (DDG): 4...f5 97 56 29 12 57.7%
English Opening: Agincourt Defense 91 63 21 7 69.2%
QGD: 4.Nf3 88 54 27 7 61.4%
Scandinavian Defense 88 71 14 3 80.7%
Bullet Opening Games Wins Losses Draws Win Rate
Amar Gambit 3393 2651 585 157 78.1%
Modern 1309 995 255 59 76.0%
Australian Defense 778 612 130 36 78.7%
Colle System: Rhamphorhynchus Variation 375 288 79 8 76.8%
English Opening: Agincourt Defense 178 126 44 8 70.8%
Nimzo-Larsen Attack 88 66 19 3 75.0%
English Opening 76 62 6 8 81.6%
Caro-Kann Defense 47 28 15 4 59.6%
Unknown 47 34 13 0 72.3%
French Defense 46 37 6 3 80.4%
Rapid Opening Games Wins Losses Draws Win Rate
Caro-Kann Defense 20 17 2 1 85.0%
Ruy Lopez: Berlin Defense, Berlin Wall 14 6 3 5 42.9%
Petrov's Defense 13 11 1 1 84.6%
Scandinavian Defense 12 11 0 1 91.7%
English Opening: King's English Variation 12 10 1 1 83.3%
Ruy Lopez: Exchange Variation 11 10 1 0 90.9%
Amazon Attack: Siberian Attack 11 7 0 4 63.6%
London System: Poisoned Pawn Variation 10 8 1 1 80.0%
Diemer-Duhm Gambit (DDG): 4...f5 10 7 1 2 70.0%
Italian Game: Two Knights Defense 9 4 4 1 44.4%

🔥 Streaks

Streak Longest Current
Winning 71 1
Losing 18 0
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