Prepare against Bert Sieber
DEU · World #12,603 classical · FIDE ID 16265971
Our database contains 42 games by Bert Sieber, covering Jun 2018 to Aug 2026. Below you'll find Bert Sieber's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Bert Sieber 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 | 2,134 | 2,177 | Sep 2025 |
| Blitz | 1,953 | 1,957 | Nov 2024 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 42 | 17 | 4 | 21 | 40.5% |
| As White | 21 | 7 | 2 | 12 | 33.3% |
| As Black | 21 | 10 | 2 | 9 | 47.6% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Bert Sieber's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Bert Sieber's side.
First moves as White (21 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 19 | 90.5% | 42.1% |
| c4 | 1 | 4.8% | 0.0% |
| Nf3 | 1 | 4.8% | 0.0% |
Main lines as White
- 1.d4 — 90% of White games, 42.1% score
- …Nf6 (68% of these games) — Sieber usually continues c4 (46.2% score)
- …d5 (21% of these games) — Sieber usually continues c4 (50.0% score)
- …e6 (5% of these games) — Sieber usually continues c4 (0.0% score)
- 1.c4 — 5% of White games, 0.0% score
- …c5 (100% of these games) — Sieber usually continues Nc3 (0.0% score)
As Black against 1.e4 (15 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 15 | 100.0% | 60.0% |
As Black against 1.d4 (4 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 4 | 100.0% | 25.0% |
Bert Sieber's chess games
All 42 games by Bert Sieber in the Chess.ceo database (Jun 2018 - 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: 17 wins, 4 draws, 21 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| E40 | Nimzo-Indian: Rubinstein System | 6 | 2/0/4 | 33.3% |
| E90 | King's Indian Defense: Orthodox Variation | 3 | 1/0/2 | 33.3% |
| D97 | Grünfeld Defense | 2 | 1/1/0 | 50.0% |
| D35 | Indian Defense | 2 | 1/0/1 | 50.0% |
| A37 | English Opening: Symmetrical | 1 | 0/0/1 | 0.0% |
| D20 | Queen's Gambit Accepted | 1 | 1/0/0 | 100.0% |
| E12 | Queen's Indian Defense | 1 | 1/0/0 | 100.0% |
| A57 | Benoni Defense | 1 | 0/1/0 | 0.0% |
| D48 | Slav Defense | 1 | 0/0/1 | 0.0% |
| A80 | Dutch Defense | 1 | 0/0/1 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B42 | Sicilian | 8 | 3/2/3 | 37.5% |
| D30 | Queen's Gambit Declined | 4 | 1/0/3 | 25.0% |
| B38 | Sicilian: Accelerated Dragon | 3 | 2/0/1 | 66.7% |
| B21 | Sicilian: Grand Prix Attack | 1 | 1/0/0 | 100.0% |
| B35 | Sicilian: Hyperaccelerated Dragon | 1 | 1/0/0 | 100.0% |
| A15 | English Opening | 1 | 0/0/1 | 0.0% |
| B51 | Sicilian: Rossolimo | 1 | 0/0/1 | 0.0% |
| A06 | Réti Opening | 1 | 1/0/0 | 100.0% |
| B23 | Sicilian: Closed | 1 | 1/0/0 | 100.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Aug 2026 | Juergen de Voogt | 2,254 | 5. Kurt Pape-Open | A-Open | B23 |
| Oct 2025 | Jan Vortmeier | 2,190 | German Youth Teams | E90 |
| Jun 2025 | Selimhan Cilo | 2,164 | ch-GER Youth U18 | D30 |
| Oct 2025 | Fabian Mader | 2,153 | German Youth Teams | D97 |
| Oct 2025 | Piet Grossmann | 2,077 | German Youth Teams | B43 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| ch-GER U12 | 2018 | 11 | 4.5 | 1,557 |
| ch-GER Youth U18 | 2025 | 9 | 4 | 2,002 |
| ch-Lower Saxony 2026 | 2026 | 7 | 2 | 1,889 |
| German Youth Teams | 2025 | 7 | 3.5 | 2,174 |
| 5. Kurt Pape-Open | A-Open | 2026 | 7 | 5 | 2,228 |
| grenke Chess Open 2026 | 2026 | 1 | 0 | 2,141 |
Interactive opening tree from all 42 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Bert Sieber's chess games?
42 games by Bert Sieber, from Jun 2018 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 Bert Sieber has played.
What does Bert Sieber play on the first move as White?
Across 21 games with White in our database, Bert Sieber opens with 1.d4 (90% of games), 1.c4 (5% of games), 1.Nf3 (5% of games). Against 1.e4 as Black, Bert Sieber answers 1...c5 (100% of games). Against 1.d4: 1...d5 (100% of games).
What openings does Bert Sieber play as White?
As White, Bert Sieber's most-played openings in our database are: Nimzo-Indian: Rubinstein System (6 games, 33.3% win rate); King's Indian Defense: Orthodox Variation (3 games, 33.3% win rate); Grünfeld Defense (2 games, 50.0% win rate). The full breakdown of 21 games with White is in the table above.
What openings does Bert Sieber play as Black?
As Black, Bert Sieber most often plays: Sicilian (8 games, 37.5% win rate); Queen's Gambit Declined (4 games, 25.0% win rate); Sicilian: Accelerated Dragon (3 games, 66.7% win rate). See the table above for the top ten Black openings across 21 games.
What is Bert Sieber's FIDE rating?
Bert Sieber is currently rated 2,134 in classical chess and 1,953 in blitz. Peak classical rating: 2,177 (Sep 2025).
How many games has Bert Sieber played?
Our database contains 42 games by Bert Sieber, covering Jun 2018 to Aug 2026. Overall record: 17 wins, 4 draws, 21 losses (40.5% win rate).
How do I prepare against Bert Sieber?
42 games by Bert Sieber 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.