Prepare against Tetyana Kostak
WFM · DEU · World #27,233 classical · FIDE ID 14101041
Our database contains 76 games by Tetyana Kostak, covering Apr 2003 to Aug 2026. Below you'll find Tetyana Kostak's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Tetyana Kostak 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 | 2,003 | 2,170 | Aug 2013 |
| Rapid | 2,033 | 2,170 | Feb 2013 |
| Blitz | 1,998 | 2,149 | Aug 2016 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 76 | 30 | 18 | 28 | 39.5% |
| As White | 40 | 17 | 11 | 12 | 42.5% |
| As Black | 36 | 13 | 7 | 16 | 36.1% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Tetyana Kostak's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Tetyana Kostak's side.
First moves as White (40 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 20 | 50.0% | 50.0% |
| d4 | 12 | 30.0% | 66.7% |
| Nf3 | 4 | 10.0% | 75.0% |
| c4 | 2 | 5.0% | 50.0% |
| Nc3 | 1 | 2.5% | 0.0% |
| a3 | 1 | 2.5% | 50.0% |
Main lines as White
- 1.e4 — 50% of White games, 50.0% score
- …c5 (55% of these games) — Kostak usually continues Nf3 (40.0% score)
- …e6 (20% of these games) — Kostak usually continues d3 (33.3% score)
- …e5 (15% of these games) — Kostak usually continues Nf3 (50.0% score)
- 1.d4 — 30% of White games, 66.7% score
- …Nf6 (42% of these games) — Kostak usually continues c4 (37.5% score)
- …d5 (33% of these games) — Kostak usually continues c4 (66.7% score)
- …e6 (8% of these games) — Kostak usually continues g3 (100.0% score)
As Black against 1.e4 (22 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 11 | 50.0% | 50.0% |
| d6 | 7 | 31.8% | 50.0% |
| Nc6 | 2 | 9.1% | 0.0% |
| e5 | 2 | 9.1% | 50.0% |
As Black against 1.d4 (11 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 5 | 45.5% | 40.0% |
| d6 | 4 | 36.4% | 37.5% |
| Nc6 | 2 | 18.2% | 50.0% |
Tetyana Kostak's chess games
All 76 games by Tetyana Kostak in the Chess.ceo database (Apr 2003 - 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: 30 wins, 18 draws, 28 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B40 | Sicilian | 8 | 3/2/3 | 37.5% |
| A06 | Réti Opening | 3 | 2/1/0 | 66.7% |
| C00 | King's Indian Attack | 3 | 1/0/2 | 33.3% |
| B31 | Sicilian: Rossolimo | 2 | 0/0/2 | 0.0% |
| D04 | Colle System | 2 | 1/1/0 | 50.0% |
| D13 | Slav Defense | 2 | 0/2/0 | 0.0% |
| D05 | Indian Defense | 2 | 1/1/0 | 50.0% |
| B13 | English Opening: Symmetrical | 2 | 1/0/1 | 50.0% |
| A80 | Dutch Defense | 1 | 1/0/0 | 100.0% |
| A00 | Dunst Opening | 1 | 0/0/1 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B76 | Sicilian: Dragon | 6 | 2/2/2 | 33.3% |
| B23 | Sicilian: Closed | 3 | 2/0/1 | 66.7% |
| A41 | Rat Defense | 3 | 1/1/1 | 33.3% |
| B00 | Pirc Defense | 3 | 1/2/0 | 33.3% |
| C41 | Pirc Defense: Lion System | 3 | 0/0/3 | 0.0% |
| A57 | Benoni Defense | 2 | 0/0/2 | 0.0% |
| B07 | Philidor | 2 | 1/1/0 | 50.0% |
| C40 | Elephant Gambit | 2 | 1/0/1 | 50.0% |
| A50 | Mikenas Defense | 2 | 1/0/1 | 50.0% |
| B00 | Nimzowitsch Defense | 2 | 0/0/2 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Oct 2024 | Kateryna Dolzhykova | 2,345 | DFSEM | C40 |
| Jan 2024 | Ferdinand Unzicker | 2,292 | 34th Staufer Open | B20 |
| Oct 2024 | Lara Schulze | 2,275 | DFSEM | A06 |
| Nov 2003 | Lidia K Semenova | 2,248 | ch-UKR w | A54 |
| Nov 2003 | Kateryna Areshchenko | 2,175 | ch-UKR w | B25 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| ch-GER w | 2025 | 18 | 9.5 | 2,130 |
| German Chess Championship 2026 | Candidates Women | 2026 | 9 | 4.5 | 1,966 |
| ch-UKR sf w | 2007 | 9 | 4 | 2,008 |
| ch-UKR w | 2003 | 9 | 4.5 | 2,190 |
| 3rd UKR Games w | 2007 | 7 | 4.5 | 2,249 |
| DFSEM | 2024 | 6 | 4 | 2,318 |
| chT-GER Federal Cup w | 2022 | 5 | 3.5 | 2,160 |
| Deutsche Frauen-Mannschaftsmeisterschaft der Landesverbände 2026 | 2026 | 5 | 3.5 | 2,184 |
Interactive opening tree from all 76 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Tetyana Kostak's chess games?
76 games by Tetyana Kostak, from Apr 2003 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 Tetyana Kostak has played.
What does Tetyana Kostak play on the first move as White?
Across 40 games with White in our database, Tetyana Kostak opens with 1.e4 (50% of games), 1.d4 (30% of games), 1.Nf3 (10% of games). Against 1.e4 as Black, Tetyana Kostak answers 1...c5 (50% of games), 1...d6 (32% of games), 1...Nc6 (9% of games). Against 1.d4: 1...Nf6 (45% of games), 1...d6 (36% of games), 1...Nc6 (18% of games).
What openings does Tetyana Kostak play as White?
As White, Tetyana Kostak's most-played openings in our database are: Sicilian (8 games, 37.5% win rate); Réti Opening (3 games, 66.7% win rate); King's Indian Attack (3 games, 33.3% win rate). The full breakdown of 40 games with White is in the table above.
What openings does Tetyana Kostak play as Black?
As Black, Tetyana Kostak most often plays: Sicilian: Dragon (6 games, 33.3% win rate); Sicilian: Closed (3 games, 66.7% win rate); Rat Defense (3 games, 33.3% win rate). See the table above for the top ten Black openings across 36 games.
What is Tetyana Kostak's FIDE rating?
Tetyana Kostak is currently rated 2,003 in classical chess, 2,033 in rapid and 1,998 in blitz. Peak classical rating: 2,170 (Aug 2013).
How many games has Tetyana Kostak played?
Our database contains 76 games by Tetyana Kostak, covering Apr 2003 to Aug 2026. Overall record: 30 wins, 18 draws, 28 losses (39.5% win rate).
How do I prepare against Tetyana Kostak?
76 games by Tetyana Kostak 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.