Prepare against John Klaus Jensen
DNK · World #69,442 classical · FIDE ID 1413104
When preparing against John Klaus Jensen, expect 1.Nf3 in 23% of White games. Against 1.e4 the reply is 1...e5 (38% of games); against 1.d4, 1...g6 (50%).
Our database contains 60 games by John Klaus Jensen, covering Oct 2006 to Jul 2026. Below you'll find John Klaus Jensen's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout John Klaus Jensen before a game. You can open the same data in the free interactive preparation workstation, which builds a move-by-move opening tree from every game.
Ratings
| Time control | Current | Peak | Peak date |
|---|---|---|---|
| Classical | 1,823 | 1,960 | Jul 2008 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 60 | 17 | 17 | 26 | 28.3% |
| As White | 31 | 8 | 10 | 13 | 25.8% |
| As Black | 29 | 9 | 7 | 13 | 31.0% |
Move-by-move preparation stats
Straight from the preparation tree built over all of John Klaus Jensen's games — the same tree the interactive prep board lets you walk to any depth. Scores are from John Klaus Jensen's side.
First moves as White (31 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf3 | 7 | 22.6% | 42.9% |
| d4 | 7 | 22.6% | 57.1% |
| c4 | 5 | 16.1% | 40.0% |
| e4 | 5 | 16.1% | 40.0% |
| a3 | 3 | 9.7% | 33.3% |
| g3 | 2 | 6.5% | 50.0% |
Main lines as White
- 1.Nf3 — 23% of White games, 42.9% score
- …Nf6 (57% of these games) — Jensen usually continues g3 (50.0% score)
- …c5 (29% of these games) — Jensen usually continues g3 (25.0% score)
- …f5 (14% of these games) — Jensen usually continues d3 (50.0% score)
- 1.d4 — 23% of White games, 57.1% score
- …Nf6 (71% of these games) — Jensen usually continues c4 (33.3% score)
- …d5 (14% of these games) — Jensen usually continues e4 (100.0% score)
- …g6 (14% of these games) — Jensen usually continues c4 (50.0% score)
As Black against 1.e4 (16 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e5 | 6 | 37.5% | 33.3% |
| g6 | 3 | 18.8% | 33.3% |
| c6 | 2 | 12.5% | 100.0% |
| Nc6 | 1 | 6.3% | 50.0% |
| c5 | 1 | 6.3% | 0.0% |
| d6 | 1 | 6.3% | 50.0% |
As Black against 1.d4 (10 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| g6 | 5 | 50.0% | 50.0% |
| Nf6 | 2 | 20.0% | 50.0% |
| d5 | 1 | 10.0% | 50.0% |
| d6 | 1 | 10.0% | 0.0% |
| c6 | 1 | 10.0% | 0.0% |
John Klaus Jensen's chess games
All 60 games by John Klaus Jensen in the Chess.ceo database (Oct 2006 - Jul 2026) are free to browse, search and replay: filter by opening, opponent, event or date on the player page, or step through any game on the analysis board. Record: 17 wins, 17 draws, 26 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A17 | English Opening | 4 | 2/1/1 | 50.0% |
| A37 | Réti Opening | 3 | 0/1/2 | 0.0% |
| A00 | Anderssen's opening | 3 | 1/0/2 | 33.3% |
| D80 | Grünfeld Defense | 2 | 0/1/1 | 0.0% |
| A26 | Réti Opening: Symmetrical Defense | 2 | 1/1/0 | 50.0% |
| A26 | Hungarian Opening | 2 | 1/0/1 | 50.0% |
| E92 | King's Indian Defense: Orthodox Variation | 2 | 0/2/0 | 0.0% |
| A07 | King's Indian Attack | 1 | 0/0/1 | 0.0% |
| A06 | Mieses Opening | 1 | 0/0/1 | 0.0% |
| B07 | Pirc Defense | 1 | 0/1/0 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A40 | Modern Defense | 4 | 1/0/3 | 25.0% |
| A16 | English Opening | 2 | 1/0/1 | 50.0% |
| A34 | Grünfeld Defense | 2 | 0/1/1 | 0.0% |
| B06 | Pirc Defense | 2 | 0/1/1 | 0.0% |
| B01 | Caro-Kann: Exchange Variation | 2 | 2/0/0 | 100.0% |
| C62 | Four Knights Game: Spanish Variation | 1 | 0/0/1 | 0.0% |
| B11 | Caro-Kann: Two Knights Variation | 1 | 1/0/0 | 100.0% |
| C57 | Italian Game: Two Knights Defense | 1 | 0/0/1 | 0.0% |
| D04 | Colle System | 1 | 1/0/0 | 100.0% |
| D85 | Indian Defense | 1 | 0/1/0 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jul 2006 | Ib Lynaes Hansen | 1,998 | 21st North Sea Cup | A96 |
| Jul 2006 | Torben Phalaris Pedersen | 1,923 | 21st North Sea Cup | C10 |
| Jul 2006 | Jan Kargaard Jensen | 1,923 | 21st North Sea Cup | A40 |
| Aug 2012 | Troels Svane | 1,723 | 34th Politiken Cup | A26 |
| Jul 2008 | Tobias Juul Madsen | 1,608 | 23rd North Sea Cup | D02 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| 20th Politiken Cup | 1998 | 11 | 4 | 1,948 |
| 21st Politiken Cup | 1999 | 11 | 4 | 1,993 |
| 34th Politiken Cup | 2012 | 10 | 4.5 | 1,901 |
| 20th North Sea Cup | 2005 | 9 | 4.5 | 2,065 |
| 23rd North Sea Cup | 2008 | 9 | 4 | 1,735 |
| 21st North Sea Cup | 2006 | 9 | 4.5 | 1,996 |
| 24th Politiken Cup | 2002 | 1 | 0 | 1,794 |
Interactive opening tree from all 60 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find John Klaus Jensen's chess games?
60 games by John Klaus Jensen, from Oct 2006 to Jul 2026, are free to browse and replay move by move — no signup needed. The preparation view groups them into an opening tree showing every line John Klaus Jensen has played.
What does John Klaus Jensen play on the first move as White?
Across 31 games with White in our database, John Klaus Jensen opens with 1.Nf3 (23% of games), 1.d4 (23% of games), 1.c4 (16% of games). Against 1.e4 as Black, John Klaus Jensen answers 1...e5 (38% of games), 1...g6 (19% of games), 1...c6 (13% of games). Against 1.d4: 1...g6 (50% of games), 1...Nf6 (20% of games), 1...d5 (10% of games).
What openings does John Klaus Jensen play as White?
As White, John Klaus Jensen's most-played openings in our database are: English Opening (4 games, 50.0% win rate); Réti Opening (3 games, 0.0% win rate); Anderssen's opening (3 games, 33.3% win rate). The full breakdown of 31 games with White is in the table above.
What openings does John Klaus Jensen play as Black?
As Black, John Klaus Jensen most often plays: Modern Defense (4 games, 25.0% win rate); English Opening (2 games, 50.0% win rate); Grünfeld Defense (2 games, 0.0% win rate). See the table above for the top ten Black openings across 29 games.
What is John Klaus Jensen's FIDE rating?
John Klaus Jensen is currently rated 1,823 in classical chess. Peak classical rating: 1,960 (Jul 2008).
How many games has John Klaus Jensen played?
Our database contains 60 games by John Klaus Jensen, covering Oct 2006 to Jul 2026. Overall record: 17 wins, 17 draws, 26 losses (28.3% win rate).
How do I prepare against John Klaus Jensen?
60 games by John Klaus Jensen reveal their opening repertoire, most-played lines, and the variations where they score worst — the raw material for targeted preparation. The interactive opening tree lets you walk every line to any depth.