Prepare against Theodoros Sideris
GRC · World #56,011 classical · FIDE ID 4203704
When preparing against Theodoros Sideris, expect 1.e4 in 100% of White games. Against 1.e4 the reply is 1...c5 (99% of games); against 1.d4, 1...Nf6 (84%). Lowest win rate among frequent openings: Sicilian as Black, 30.8% over 26 games.
Our database contains 582 games by Theodoros Sideris, covering Apr 2003 to Sep 2026. Below you'll find Theodoros Sideris's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Theodoros Sideris 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 | 1,870 | 2,115 | Apr 2005 |
| Rapid | 1,851 | 2,016 | Oct 2013 |
| Blitz | 1,823 | 2,019 | Dec 2012 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 582 | 235 | 101 | 246 | 40.4% |
| As White | 293 | 133 | 46 | 114 | 45.4% |
| As Black | 289 | 102 | 55 | 132 | 35.3% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Theodoros Sideris's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Theodoros Sideris's side.
First moves as White (293 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 292 | 99.7% | 53.4% |
| d4 | 1 | 0.3% | 0.0% |
Main lines as White
- 1.e4 — 100% of White games, 53.4% score
- …c5 (41% of these games) — Sideris usually continues Nf3 (49.2% score)
- …e5 (21% of these games) — Sideris usually continues Nf3 (54.1% score)
- …e6 (14% of these games) — Sideris usually continues d4 (58.5% score)
- 1.d4 — 0% of White games, 0.0% score
- …d5 (100% of these games) — Sideris usually continues Nc3 (0.0% score)
As Black against 1.e4 (140 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 138 | 98.6% | 48.6% |
| g6 | 2 | 1.4% | 0.0% |
As Black against 1.d4 (109 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 92 | 84.4% | 40.2% |
| d5 | 14 | 12.8% | 39.3% |
| c5 | 3 | 2.8% | 66.7% |
Theodoros Sideris's chess games
All 582 games by Theodoros Sideris in the Chess.ceo database (Apr 2003 - 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: 235 wins, 101 draws, 246 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B22 | Sicilian: Alapin | 52 | 24/8/20 | 46.2% |
| B22 | Sicilian | 38 | 15/6/17 | 39.5% |
| C45 | Scotch Game | 37 | 20/5/12 | 54.1% |
| B01 | Scandinavian Defense: Modern Variation | 15 | 6/5/4 | 40.0% |
| C15 | French: Winawer Variation | 15 | 8/3/4 | 53.3% |
| B87 | Sicilian: Najdorf | 13 | 8/1/4 | 61.5% |
| C10 | French Defense | 13 | 9/1/3 | 69.2% |
| C12 | French: Classical Variation | 11 | 5/0/6 | 45.5% |
| B13 | Caro-Kann: Exchange Variation | 10 | 5/3/2 | 50.0% |
| B06 | Modern Defense | 10 | 3/4/3 | 30.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B36 | Sicilian: Accelerated Dragon | 51 | 21/11/19 | 41.2% |
| A57 | Benoni Defense | 34 | 11/4/19 | 32.4% |
| B28 | Sicilian | 26 | 8/6/12 | 30.8% |
| A46 | Indian Defense | 20 | 9/2/9 | 45.0% |
| B31 | Sicilian: Rossolimo | 19 | 6/2/11 | 31.6% |
| B23 | Sicilian: Closed | 17 | 8/5/4 | 47.1% |
| B22 | Sicilian: Alapin | 10 | 5/2/3 | 50.0% |
| A43 | Sicilian: Hyperaccelerated Dragon | 9 | 4/2/3 | 44.4% |
| A37 | English Opening: Symmetrical | 9 | 2/1/6 | 22.2% |
| E67 | English Opening | 8 | 3/1/4 | 37.5% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Aug 2015 | Alexey Kislinsky | 2,475 | 5th Isthmia Open | B27 |
| Aug 2008 | Athanasios Karagiannis | 2,357 | 16th Nikaia Open | B22 |
| Dec 2006 | Nikolaos Skalkotas | 2,288 | 1st Athens Smaok Open | E01 |
| Dec 2006 | Anastasios Mihailidis | 2,278 | 1st Athens Smaok Open | C45 |
| Aug 2012 | Konstantinos Koliopoulos | 2,243 | Athens Open 08 | C43 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Athens Acropolis Open | 2005 | 18 | 7.5 | 2,131 |
| 1st Aspropyrgos Open A | 2019 | 8 | 4.5 | 2,005 |
| ch-Attica Open | 2003 | 8 | 5.5 | 2,348 |
| 29th Nikaia Open | 2022 | 7 | 4.5 | 2,042 |
| 33rd Ambelokipi Open | 2001 | 7 | 5 | 2,365 |
| Panagiotis Apergis Open | 2007 | 7 | 4 | 1,884 |
| Ambelokipi Open 76th | 2007 | 7 | 5 | 2,028 |
| 16th Ambelokipi Open | 1999 | 7 | 5 | 2,309 |
Frequent opponents
Head-to-head records: Dimitrios Delithanasis (25 games) · Georgios Nikolaou (14 games)
Interactive opening tree from all 582 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Theodoros Sideris's chess games?
582 games by Theodoros Sideris, from Apr 2003 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 Theodoros Sideris has played.
What does Theodoros Sideris play on the first move as White?
Across 293 games with White in our database, Theodoros Sideris opens with 1.e4 (100% of games), 1.d4 (0% of games). Against 1.e4 as Black, Theodoros Sideris answers 1...c5 (99% of games), 1...g6 (1% of games). Against 1.d4: 1...Nf6 (84% of games), 1...d5 (13% of games), 1...c5 (3% of games).
What openings does Theodoros Sideris play as White?
As White, Theodoros Sideris's most-played openings in our database are: Sicilian: Alapin (52 games, 46.2% win rate); Sicilian (38 games, 39.5% win rate); Scotch Game (37 games, 54.1% win rate). The full breakdown of 293 games with White is in the table above.
What openings does Theodoros Sideris play as Black?
As Black, Theodoros Sideris most often plays: Sicilian: Accelerated Dragon (51 games, 41.2% win rate); Benoni Defense (34 games, 32.4% win rate); Sicilian (26 games, 30.8% win rate). See the table above for the top ten Black openings across 289 games.
What is Theodoros Sideris's FIDE rating?
Theodoros Sideris is currently rated 1,870 in classical chess, 1,851 in rapid and 1,823 in blitz. Peak classical rating: 2,115 (Apr 2005).
How many games has Theodoros Sideris played?
Our database contains 582 games by Theodoros Sideris, covering Apr 2003 to Sep 2026. Overall record: 235 wins, 101 draws, 246 losses (40.4% win rate).
How do I prepare against Theodoros Sideris?
582 games by Theodoros Sideris 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.