Prepare against Sanne De Boer
United Kingdom · World #33,190 classical · FIDE ID 343432255
When preparing against Sanne De Boer, expect 1.e4 in 100% of White games. Against 1.e4 the reply is 1...c6 (100% of games); against 1.d4, 1...Nf6 (100%).
Our database contains 37 games by Sanne De Boer, covering Sep 2023 to Sep 2026. Below you'll find Sanne De Boer's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Sanne De Boer 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 | 1,969 | 1,969 | Sep 2026 |
| Rapid | 1,656 | 1,683 | Sep 2025 |
| Blitz | 1,849 | 1,849 | Sep 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 37 | 15 | 11 | 11 | 40.5% |
| As White | 19 | 8 | 3 | 8 | 42.1% |
| As Black | 18 | 7 | 8 | 3 | 38.9% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Sanne De Boer's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Sanne De Boer's side.
First moves as White (19 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 19 | 100.0% | 50.0% |
Main lines as White
- 1.e4 — 100% of White games, 50.0% score
- …c5 (37% of these games) — Boer usually continues Nc3 (57.1% score)
- …e5 (16% of these games) — Boer usually continues Bc4 (0.0% score)
- …c6 (11% of these games) — Boer usually continues d3 (50.0% score)
As Black against 1.e4 (7 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c6 | 7 | 100.0% | 57.1% |
As Black against 1.d4 (7 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 7 | 100.0% | 50.0% |
Sanne De Boer's chess games
All 37 games by Sanne De Boer in the Chess.ceo database (Sep 2023 - Sep 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: 15 wins, 11 draws, 11 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B23 | Sicilian: Closed | 7 | 3/2/2 | 42.9% |
| B06 | Modern Defense | 2 | 2/0/0 | 100.0% |
| B07 | Pirc Defense | 2 | 2/0/0 | 100.0% |
| C02 | French: Advance Variation | 1 | 0/0/1 | 0.0% |
| C19 | French: Winawer Variation | 1 | 1/0/0 | 100.0% |
| C24 | Bishop's Opening | 1 | 0/0/1 | 0.0% |
| C54 | Italian Game: Giuoco Pianissimo | 1 | 0/0/1 | 0.0% |
| B00 | Nimzowitsch Defense | 1 | 0/0/1 | 0.0% |
| C55 | Italian Game | 1 | 0/0/1 | 0.0% |
| B10 | Caro-Kann | 1 | 0/1/0 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B13 | Caro-Kann: Exchange Variation | 3 | 0/2/1 | 0.0% |
| B10 | Caro-Kann | 2 | 1/1/0 | 50.0% |
| E77 | King's Indian Defense: Four Pawns Attack | 2 | 1/0/1 | 50.0% |
| E96 | King's Indian Defense: Orthodox Variation | 2 | 1/1/0 | 50.0% |
| A52 | Budapest Defense | 2 | 0/1/1 | 0.0% |
| D03 | Indian Defense | 1 | 0/1/0 | 0.0% |
| A03 | Bird's opening | 1 | 0/1/0 | 0.0% |
| E88 | King's Indian: Sämisch | 1 | 1/0/0 | 100.0% |
| B12 | Caro-Kann: Advance Variation | 1 | 1/0/0 | 100.0% |
| B17 | Caro-Kann: Karpov Variation | 1 | 0/1/0 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jan 1996 | Chris De Saegher | 2,205 | 5th Haarlem AKN Open | B07 |
| Aug 2026 | Ed Baarslag | 2,065 | Scheldemond Open 2026 | B23 |
| Apr 2026 | Ilias Boughdir | 1,800 | Tapijtgigang Alkmaars Schaakkampioenschap 2026 | A16 |
| Jan 1997 | Henk-Jan Visser | 1,740 | 6th Haarlem AKN Open | B23 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| ch-NED U20 | 1994 | 9 | 5 | 2,384 |
| Scheldemond Open 2026 | 2026 | 5 | 2.5 | 2,079 |
| chT-NED 9697 | 1996 | 5 | 2.5 | 2,200 |
| 6th Haarlem AKN Open | 1997 | 5 | 2.5 | 1,862 |
| 5th Haarlem AKN Open | 1996 | 5 | 3 | 2,461 |
| Tapijtgigang Alkmaars Schaakkampioenschap 2026 | 2026 | 3 | 1.5 | 1,814 |
| USA-chT Amateur East | 2005 | 2 | 1.5 | 2,555 |
| Hengelo Open | 1992 | 1 | 1 | – |
Interactive opening tree from all 37 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Sanne De Boer's chess games?
37 games by Sanne De Boer, from Sep 2023 to Sep 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 Sanne De Boer has played.
What does Sanne De Boer play on the first move as White?
Across 19 games with White in our database, Sanne De Boer opens with 1.e4 (100% of games). Against 1.e4 as Black, Sanne De Boer answers 1...c6 (100% of games). Against 1.d4: 1...Nf6 (100% of games).
What openings does Sanne De Boer play as White?
As White, Sanne De Boer's most-played openings in our database are: Sicilian: Closed (7 games, 42.9% win rate); Modern Defense (2 games, 100.0% win rate); Pirc Defense (2 games, 100.0% win rate). The full breakdown of 19 games with White is in the table above.
What openings does Sanne De Boer play as Black?
As Black, Sanne De Boer most often plays: Caro-Kann: Exchange Variation (3 games, 0.0% win rate); Caro-Kann (2 games, 50.0% win rate); King's Indian Defense: Four Pawns Attack (2 games, 50.0% win rate). See the table above for the top ten Black openings across 18 games.
What is Sanne De Boer's FIDE rating?
Sanne De Boer is currently rated 1,969 in classical chess, 1,656 in rapid and 1,849 in blitz. Peak classical rating: 1,969 (Sep 2026).
How many games has Sanne De Boer played?
Our database contains 37 games by Sanne De Boer, covering Sep 2023 to Sep 2026. Overall record: 15 wins, 11 draws, 11 losses (40.5% win rate).
How do I prepare against Sanne De Boer?
37 games by Sanne De Boer 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.