Prepare against Irena Hertlein
WFM · Poland · World #23,252 classical · FIDE ID 21817618
When preparing against Irena Hertlein, expect 1.d4 in 35% of White games. Against 1.e4 the reply is 1...c5 (79% of games); against 1.d4, 1...Nf6 (66%). Lowest win rate among frequent openings: Réti Opening as White, 26.7% over 45 games.
Our database contains 507 games by Irena Hertlein, covering Apr 2015 to Sep 2026. Below you'll find Irena Hertlein's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Irena Hertlein 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 | 2,032 | 2,120 | Aug 2023 |
| Rapid | 2,019 | 2,019 | Sep 2026 |
| Blitz | 1,900 | 1,911 | Aug 2026 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 507 | 178 | 97 | 232 | 35.1% |
| As White | 252 | 100 | 45 | 107 | 39.7% |
| As Black | 255 | 78 | 52 | 125 | 30.6% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Irena Hertlein's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Irena Hertlein's side.
First moves as White (252 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 89 | 35.3% | 46.6% |
| e4 | 80 | 31.7% | 56.9% |
| Nf3 | 77 | 30.6% | 42.9% |
| c4 | 5 | 2.0% | 40.0% |
| g3 | 1 | 0.4% | 50.0% |
Main lines as White
- 1.d4 — 35% of White games, 46.6% score
- …Nf6 (51% of these games) — Hertlein usually continues Nf3 (56.9% score)
- …d5 (35% of these games) — Hertlein usually continues Nf3 (50.0% score)
- …c5 (6% of these games) — Hertlein usually continues e3 (0.0% score)
- 1.e4 — 32% of White games, 56.9% score
- …c5 (39% of these games) — Hertlein usually continues Nf3 (53.4% score)
- …e5 (31% of these games) — Hertlein usually continues Nf3 (70.0% score)
- …c6 (11% of these games) — Hertlein usually continues d4 (50.0% score)
As Black against 1.e4 (145 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 114 | 78.6% | 39.0% |
| d5 | 23 | 15.9% | 56.5% |
| c6 | 7 | 4.8% | 64.3% |
| e6 | 1 | 0.7% | 0.0% |
As Black against 1.d4 (71 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 47 | 66.2% | 34.0% |
| d5 | 20 | 28.2% | 52.5% |
| c5 | 2 | 2.8% | 50.0% |
| f5 | 1 | 1.4% | 50.0% |
Irena Hertlein's chess games
All 507 games by Irena Hertlein in the Chess.ceo database (Apr 2015 - 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: 178 wins, 97 draws, 232 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A05 | Réti Opening | 45 | 12/7/26 | 26.7% |
| D02 | London System | 19 | 9/3/7 | 47.4% |
| A46 | Indian Defense | 18 | 7/2/9 | 38.9% |
| E05 | Catalan | 14 | 3/5/6 | 21.4% |
| A06 | Nimzo-Larsen Attack | 12 | 5/4/3 | 41.7% |
| B32 | Sicilian | 9 | 7/1/1 | 77.8% |
| D02 | Queen's Pawn Game | 8 | 4/2/2 | 50.0% |
| B06 | Modern Defense | 8 | 2/1/5 | 25.0% |
| A44 | Benoni Defense | 8 | 2/0/6 | 25.0% |
| B90 | Sicilian: Najdorf | 8 | 1/3/4 | 12.5% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B20 | Sicilian | 59 | 19/4/36 | 32.2% |
| B01 | Scandinavian Defense: Main Line | 21 | 9/7/5 | 42.9% |
| B36 | Sicilian: Accelerated Dragon | 13 | 3/5/5 | 23.1% |
| D32 | Queen's Gambit Declined | 12 | 4/2/6 | 33.3% |
| A46 | Indian Defense | 12 | 1/3/8 | 8.3% |
| B23 | Sicilian: Closed | 10 | 4/1/5 | 40.0% |
| D32 | English Opening | 9 | 2/1/6 | 22.2% |
| C00 | Réti Opening | 9 | 1/2/6 | 11.1% |
| E06 | Catalan | 8 | 3/3/2 | 37.5% |
| B31 | Sicilian: Rossolimo | 8 | 1/1/6 | 12.5% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jan 2025 | Va Daskevics | 2,445 | Titled Tue Early | B61 |
| Feb 2025 | Alexander Bagrationi | 2,393 | Titled Tue Early | B21 |
| Jan 2025 | Arseny Alavkin | 2,367 | Titled Tue Early | A05 |
| Jan 2025 | Tom Decuigniere | 2,361 | Titled Tue Late | A05 |
| Dec 2020 | Krzysztof Lukasiewicz | 2,359 | ch-EUR qual Online | D02 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Titled Tuesday | 2025 | 161 | 50 | 2,014 |
| ch-POL U20 Girls | 2023 | 35 | 17 | 1,853 |
| POL-chT U19 2nd League | 2016 | 21 | 11.5 | 1,355 |
| chT-POL U20 2nd League | 2020 | 20 | 16.5 | 1,652 |
| Ceske Budejovice Open A | 2026 | 17 | 10 | 2,118 |
| ch-POL U20 w | 2025 | 17 | 9.5 | 1,964 |
| ch-POL U18 Girls | 2023 | 17 | 11 | 1,815 |
| Ustron Open B | 2023 | 16 | 8 | 1,990 |
Interactive opening tree from all 507 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Irena Hertlein's chess games?
507 games by Irena Hertlein, from Apr 2015 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 Irena Hertlein has played.
What does Irena Hertlein play on the first move as White?
Across 252 games with White in our database, Irena Hertlein opens with 1.d4 (35% of games), 1.e4 (32% of games), 1.Nf3 (31% of games). Against 1.e4 as Black, Irena Hertlein answers 1...c5 (79% of games), 1...d5 (16% of games), 1...c6 (5% of games). Against 1.d4: 1...Nf6 (66% of games), 1...d5 (28% of games), 1...c5 (3% of games).
What openings does Irena Hertlein play as White?
As White, Irena Hertlein's most-played openings in our database are: Réti Opening (45 games, 26.7% win rate); London System (19 games, 47.4% win rate); Indian Defense (18 games, 38.9% win rate). The full breakdown of 252 games with White is in the table above.
What openings does Irena Hertlein play as Black?
As Black, Irena Hertlein most often plays: Sicilian (59 games, 32.2% win rate); Scandinavian Defense: Main Line (21 games, 42.9% win rate); Sicilian: Accelerated Dragon (13 games, 23.1% win rate). See the table above for the top ten Black openings across 255 games.
What is Irena Hertlein's FIDE rating?
Irena Hertlein is currently rated 2,032 in classical chess, 2,019 in rapid and 1,900 in blitz. Peak classical rating: 2,120 (Aug 2023).
How many games has Irena Hertlein played?
Our database contains 507 games by Irena Hertlein, covering Apr 2015 to Sep 2026. Overall record: 178 wins, 97 draws, 232 losses (35.1% win rate).
How do I prepare against Irena Hertlein?
507 games by Irena Hertlein 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.