Prepare against John Jacobsen
FRO · World #51,551 classical · FIDE ID 7288522
Our database contains 47 games by John Jacobsen, covering Jul 2008 to Jul 2026. Below you'll find John Jacobsen's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout John Jacobsen 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 | 1,887 | 1,892 | Jan 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 47 | 12 | 18 | 17 | 25.5% |
| As White | 23 | 8 | 7 | 8 | 34.8% |
| As Black | 24 | 4 | 11 | 9 | 16.7% |
Move-by-move preparation stats
Straight from the preparation tree built over all of John Jacobsen's games — the same tree the interactive prep board lets you walk to any depth. Scores are from John Jacobsen's side.
First moves as White (23 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf3 | 18 | 78.3% | 55.6% |
| e4 | 5 | 21.7% | 30.0% |
Main lines as White
- 1.Nf3 — 78% of White games, 55.6% score
- …Nf6 (44% of these games) — Jacobsen usually continues g3 (37.5% score)
- …d5 (39% of these games) — Jacobsen usually continues d4 (78.6% score)
- …f5 (11% of these games) — Jacobsen usually continues g3 (50.0% score)
- 1.e4 — 22% of White games, 30.0% score
- …e6 (60% of these games) — Jacobsen usually continues d4 (50.0% score)
- …d5 (20% of these games) — Jacobsen usually continues exd5 (0.0% score)
- …d6 (20% of these games) — Jacobsen usually continues d4 (0.0% score)
As Black against 1.e4 (13 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 13 | 100.0% | 26.9% |
As Black against 1.d4 (8 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 8 | 100.0% | 62.5% |
John Jacobsen's chess games
All 47 games by John Jacobsen in the Chess.ceo database (Jul 2008 - 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: 12 wins, 18 draws, 17 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D11 | Queen's Pawn Game | 6 | 4/2/0 | 66.7% |
| E68 | Réti Opening: Symmetrical Defense | 4 | 1/0/3 | 25.0% |
| D78 | Indian Defense | 3 | 2/1/0 | 66.7% |
| C05 | French: Tarrasch Variation | 3 | 1/1/1 | 33.3% |
| A34 | Réti Opening | 2 | 0/1/1 | 0.0% |
| A88 | Dutch Defense | 2 | 0/1/1 | 0.0% |
| B01 | Scandinavian Defense: Main Line | 1 | 0/0/1 | 0.0% |
| A39 | English Opening | 1 | 0/1/0 | 0.0% |
| A43 | Pirc Defense | 1 | 0/0/1 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B33 | Sicilian: Sveshnikov | 8 | 1/4/3 | 12.5% |
| A60 | Benoni Defense | 4 | 1/3/0 | 25.0% |
| B22 | Sicilian: Alapin | 3 | 0/0/3 | 0.0% |
| B22 | Sicilian | 2 | 0/1/1 | 0.0% |
| D13 | English Opening | 2 | 0/1/1 | 0.0% |
| A04 | Mieses Opening | 1 | 0/1/0 | 0.0% |
| A48 | London System | 1 | 0/0/1 | 0.0% |
| A39 | King's Indian Defense: Fianchetto Variation | 1 | 1/0/0 | 100.0% |
| D13 | Slav Defense | 1 | 0/1/0 | 0.0% |
| A48 | Torre Attack | 1 | 1/0/0 | 100.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Nov 1978 | William Hook | 2,250 | Olympiad-23 | C05 |
| Nov 2014 | Hjalti Petersen | 1,984 | chT-FAI 1415 | E62 |
| Jan 2015 | Margar M. Berg | 1,849 | chT-FAI 1415 | E16 |
| Nov 2014 | Suni Jacobsen | 1,846 | chT-FAI 1415 | A39 |
| Oct 2015 | Rogvi Mortensen | 1,813 | chT-FAI 1516 | D78 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Olympiad-23 | 1978 | 10 | 2.5 | 2,122 |
| chT-FAI 1415 | 2015 | 9 | 6 | 1,888 |
| chT-FAI 1920 | 2020 | 5 | 1 | 1,848 |
| chT-FAI 1314 | 2014 | 4 | 1 | 1,706 |
| chT-FAI 2021 | 2021 | 4 | 1.5 | 1,663 |
| chT-FAI 1213 | 2013 | 3 | 2 | 1,895 |
| chT-FAI | 2011 | 3 | 2.5 | 1,925 |
| chT-FAI 1718 | 2018 | 2 | 1 | 1,906 |
Interactive opening tree from all 47 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find John Jacobsen's chess games?
47 games by John Jacobsen, from Jul 2008 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 Jacobsen has played.
What does John Jacobsen play on the first move as White?
Across 23 games with White in our database, John Jacobsen opens with 1.Nf3 (78% of games), 1.e4 (22% of games). Against 1.e4 as Black, John Jacobsen answers 1...c5 (100% of games). Against 1.d4: 1...Nf6 (100% of games).
What openings does John Jacobsen play as White?
As White, John Jacobsen's most-played openings in our database are: Queen's Pawn Game (6 games, 66.7% win rate); Réti Opening: Symmetrical Defense (4 games, 25.0% win rate); Indian Defense (3 games, 66.7% win rate). The full breakdown of 23 games with White is in the table above.
What openings does John Jacobsen play as Black?
As Black, John Jacobsen most often plays: Sicilian: Sveshnikov (8 games, 12.5% win rate); Benoni Defense (4 games, 25.0% win rate); Sicilian: Alapin (3 games, 0.0% win rate). See the table above for the top ten Black openings across 24 games.
What is John Jacobsen's FIDE rating?
John Jacobsen is currently rated 1,887 in classical chess. Peak classical rating: 1,892 (Jan 2026).
How many games has John Jacobsen played?
Our database contains 47 games by John Jacobsen, covering Jul 2008 to Jul 2026. Overall record: 12 wins, 18 draws, 17 losses (25.5% win rate).
How do I prepare against John Jacobsen?
47 games by John Jacobsen 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.