Prepare against Jan Kalveus
Sweden · World #73,623 classical · FIDE ID 1721682
When preparing against Jan Kalveus, expect 1.d4 in 99% of White games. Against 1.e4 the reply is 1...e6 (96% of games); against 1.d4, 1...Nf6 (96%). Lowest win rate among frequent openings: French: Winawer Variation as Black, 5.9% over 17 games.
Our database contains 170 games by Jan Kalveus, covering Sep 2015 to Aug 2026. Below you'll find Jan Kalveus's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Jan Kalveus 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 | 1,809 | 1,876 | Dec 2024 |
| Rapid | 1,735 | 1,812 | Jan 2017 |
| Blitz | 1,688 | 1,813 | Jan 2019 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 170 | 50 | 35 | 85 | 29.4% |
| As White | 81 | 27 | 18 | 36 | 33.3% |
| As Black | 89 | 23 | 17 | 49 | 25.8% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Jan Kalveus's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Jan Kalveus's side.
First moves as White (80 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 79 | 98.8% | 45.6% |
| e4 | 1 | 1.3% | 0.0% |
Main lines as White
- 1.d4 — 99% of White games, 45.6% score
- …Nf6 (41% of these games) — Kalveus usually continues Bg5 (52.9% score)
- …d5 (37% of these games) — Kalveus usually continues c4 (55.6% score)
- …c5 (8% of these games) — Kalveus usually continues d5 (33.3% score)
- 1.e4 — 1% of White games, 0.0% score
- …c5 (100% of these games) — Kalveus usually continues Nc3 (0.0% score)
As Black against 1.e4 (46 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e6 | 44 | 95.7% | 37.5% |
As Black against 1.d4 (25 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 24 | 96.0% | 41.7% |
| d5 | 1 | 4.0% | 50.0% |
Jan Kalveus's chess games
All 170 games by Jan Kalveus in the Chess.ceo database (Sep 2015 - Aug 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: 50 wins, 35 draws, 85 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A45 | Trompowsky Attack | 12 | 7/1/4 | 58.3% |
| D46 | Slav Defense | 11 | 1/4/6 | 9.1% |
| A46 | Indian Defense | 10 | 5/0/5 | 50.0% |
| A43 | Benoni Defense | 7 | 0/3/4 | 0.0% |
| A85 | Queen's Gambit Declined | 6 | 4/2/0 | 66.7% |
| D03 | Torre Attack | 5 | 1/3/1 | 20.0% |
| A48 | London System | 4 | 0/1/3 | 0.0% |
| D20 | Queen's Gambit Accepted | 3 | 2/0/1 | 66.7% |
| A85 | Horwitz Defense | 3 | 0/0/3 | 0.0% |
| D09 | Albin Countergambit | 3 | 0/1/2 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C18 | French: Winawer Variation | 17 | 1/4/12 | 5.9% |
| A46 | Indian Defense | 10 | 3/2/5 | 30.0% |
| C02 | French: Advance Variation | 9 | 4/3/2 | 44.4% |
| C01 | French: Exchange Variation | 7 | 4/2/1 | 57.1% |
| C06 | French: Tarrasch Variation | 7 | 2/0/5 | 28.6% |
| A10 | English Opening: Dutch Defense | 6 | 1/0/5 | 16.7% |
| E16 | Queen's Indian Defense | 4 | 1/1/2 | 25.0% |
| E21 | Nimzo-Indian Defense | 3 | 0/0/3 | 0.0% |
| E01 | Catalan | 3 | 0/0/3 | 0.0% |
| C00 | King's Indian Attack | 3 | 1/0/2 | 33.3% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jan 1994 | Sten Safholm | 2,210 | 24th Rilton Cup | E13 |
| Sep 2017 | Matthias Leutwyler | 2,103 | 11th Trebic Highlands Open | D20 |
| Jul 2016 | Gunnar Stake-Larsen | 2,034 | Helsingor Xtracon Open | D31 |
| Sep 2017 | Guenter Haag | 1,978 | 11th Trebic Highlands Open | A41 |
| Jul 2016 | Alexander Schloesser | 1,969 | Lueneburg Open A | C01 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Helsingor Xtracon Open | 2019 | 26 | 11.5 | 1,871 |
| ch-SWE Open | 1992 | 9 | 5 | 2,321 |
| 37th Politiken Cup | 2015 | 9 | 3.5 | 1,854 |
| 12th Trebic Highlands Open | 2018 | 9 | 4 | 1,733 |
| Adolf Anderssen Chess Festival 2026 - Senior OPEN | 2026 | 9 | 1 | 1,676 |
| 11th Trebic Highlands Open | 2017 | 9 | 4 | 1,791 |
| Adolf Anderssen Mem | 2025 | 8 | 4.5 | 1,747 |
| Lueneburg Open A | 2017 | 8 | 2 | 1,876 |
Interactive opening tree from all 170 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Jan Kalveus's chess games?
170 games by Jan Kalveus, from Sep 2015 to Aug 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 Jan Kalveus has played.
What does Jan Kalveus play on the first move as White?
Across 80 games with White in our database, Jan Kalveus opens with 1.d4 (99% of games), 1.e4 (1% of games). Against 1.e4 as Black, Jan Kalveus answers 1...e6 (96% of games). Against 1.d4: 1...Nf6 (96% of games), 1...d5 (4% of games).
What openings does Jan Kalveus play as White?
As White, Jan Kalveus's most-played openings in our database are: Trompowsky Attack (12 games, 58.3% win rate); Slav Defense (11 games, 9.1% win rate); Indian Defense (10 games, 50.0% win rate). The full breakdown of 81 games with White is in the table above.
What openings does Jan Kalveus play as Black?
As Black, Jan Kalveus most often plays: French: Winawer Variation (17 games, 5.9% win rate); Indian Defense (10 games, 30.0% win rate); French: Advance Variation (9 games, 44.4% win rate). See the table above for the top ten Black openings across 89 games.
What is Jan Kalveus's FIDE rating?
Jan Kalveus is currently rated 1,809 in classical chess, 1,735 in rapid and 1,688 in blitz. Peak classical rating: 1,876 (Dec 2024).
How many games has Jan Kalveus played?
Our database contains 170 games by Jan Kalveus, covering Sep 2015 to Aug 2026. Overall record: 50 wins, 35 draws, 85 losses (29.4% win rate).
How do I prepare against Jan Kalveus?
170 games by Jan Kalveus 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.