Prepare against Denis O`Connell
Ireland · World #103,385 classical · FIDE ID 2505860
When preparing against Denis O`Connell, expect 1.d4 in 100% of White games. Against 1.e4 the reply is 1...d5 (100% of games); against 1.d4, 1...d5 (75%).
Our database contains 42 games by Denis O`Connell, covering Aug 2015 to Oct 2026. Below you'll find Denis O`Connell's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Denis O`Connell 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 | 1,720 | 1,843 | Sep 2015 |
| Rapid | 1,804 | 1,804 | Oct 2026 |
| Blitz | 1,757 | 1,773 | Oct 2025 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 42 | 14 | 12 | 16 | 33.3% |
| As White | 22 | 8 | 5 | 9 | 36.4% |
| As Black | 20 | 6 | 7 | 7 | 30.0% |
FIDE rated record
From FIDE's official rated-game ledger (2012-2026): 266 rated games against 230 different opponents, across 42 events in 5 countries. These counts cover FIDE-rated play only, so they differ from the database totals above.
By time control
| Format | Games | W | D | L | Win rate | Avg opp | Perf | Unbeaten |
|---|---|---|---|---|---|---|---|---|
| Classical | 245 | 92 | 63 | 90 | 37.6% | 1,690 | 1,692 | 10 |
| Rapid | 7 | 3 | 1 | 3 | 42.9% | 1,415 | 1,348 | 2 |
| Blitz | 14 | 6 | 2 | 6 | 42.9% | 1,810 | 1,773 | 3 |
Against the field
| Opposition | Games | W | D | L | Win rate |
|---|---|---|---|---|---|
| Against higher-rated | 76 | 17 | 18 | 41 | 22.4% |
| Against lower-rated | 94 | 43 | 31 | 20 | 45.7% |
Wins over titled players: 1 vs FM · 1 vs CM · 2 vs WFM.
Year by year
| Year | Games | W | D | L | Avg opp | Perf |
|---|---|---|---|---|---|---|
| 2026 | 5 | 2 | 2 | 1 | 1,689 | 1,769 |
| 2025 | 42 | 11 | 16 | 15 | 1,748 | 1,692 |
| 2024 | 48 | 18 | 8 | 22 | 1,755 | 1,709 |
| 2023 | 50 | 21 | 9 | 20 | 1,619 | 1,576 |
| 2022 | 24 | 12 | 5 | 7 | 1,517 | 1,602 |
| 2021 | 8 | 3 | 1 | 4 | 1,888 | 1,838 |
| 2020 | 7 | 2 | 1 | 4 | – | – |
| 2019 | 7 | 3 | 2 | 2 | 1,596 | 1,653 |
| 2018 | 14 | 7 | 4 | 3 | 1,667 | 1,790 |
| 2017 | 7 | 3 | 4 | 0 | 1,667 | 1,867 |
| 2016 | 11 | 2 | 5 | 4 | 1,713 | 1,780 |
| 2015 | 16 | 6 | 4 | 6 | 1,524 | 1,524 |
| 2014 | 9 | 5 | 2 | 2 | – | – |
| 2013 | 13 | 4 | 2 | 7 | – | – |
| 2012 | 5 | 2 | 1 | 2 | 1,750 | 1,750 |
Where Denis O`Connell has played
Ireland (23) · Spain (10) · GCI (6) · Czechia (2) · England (1)
Move-by-move preparation stats
Straight from the preparation tree built over all of Denis O`Connell's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Denis O`Connell's side.
First moves as White (2 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 2 | 100.0% | 50.0% |
Main lines as White
- 1.d4 — 100% of White games, 50.0% score
- …d5 (50% of these games) — O`Connell usually continues Nc3 (0.0% score)
- …Nf6 (50% of these games) — O`Connell usually continues Nc3 (100.0% score)
As Black against 1.e4 (8 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 8 | 100.0% | 43.8% |
As Black against 1.d4 (8 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 6 | 75.0% | 50.0% |
| Nf6 | 1 | 12.5% | 50.0% |
| e5 | 1 | 12.5% | 0.0% |
Denis O`Connell's chess games
All 42 games by Denis O`Connell in the Chess.ceo database (Aug 2015 - Oct 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: 14 wins, 12 draws, 16 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| C21 | Danish Gambit | 5 | 0/4/1 | 0.0% |
| B20 | Sicilian: Wing Gambit | 3 | 2/0/1 | 66.7% |
| B22 | Sicilian: Alapin | 3 | 1/0/2 | 33.3% |
| B11 | Caro-Kann | 2 | 2/0/0 | 100.0% |
| B18 | Caro-Kann: Classical | 2 | 1/0/1 | 50.0% |
| C00 | French Defense | 2 | 0/0/2 | 0.0% |
| B07 | Queen's Pawn Game | 1 | 1/0/0 | 100.0% |
| D00 | Queen's Pawn Game: Chigorin Variation | 1 | 0/0/1 | 0.0% |
| A00 | Scandinavian Defense | 1 | 0/0/1 | 0.0% |
| B07 | Pirc Defense | 1 | 0/1/0 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B01 | Scandinavian Defense: Modern Variation | 6 | 2/1/3 | 33.3% |
| D02 | Queen's Pawn Game | 3 | 1/1/1 | 33.3% |
| D07 | Albin Countergambit | 2 | 0/2/0 | 0.0% |
| A00 | Scandinavian Defense | 2 | 1/0/1 | 50.0% |
| A40 | Englund Gambit | 1 | 0/0/1 | 0.0% |
| D00 | London System | 1 | 0/1/0 | 0.0% |
| A06 | Nimzo-Larsen Attack | 1 | 1/0/0 | 100.0% |
| A02 | Bird's opening | 1 | 0/0/1 | 0.0% |
| D02 | Réti Opening | 1 | 1/0/0 | 100.0% |
| A57 | Benoni Defense | 1 | 0/1/0 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Oct 2022 | Wolfgang Cleve-Prinz | 1,903 | 19th Calvia Amateur Open | B06 |
| Oct 2016 | Matthew Kirk | 1,791 | 42nd Guernsey Holiday Open | B18 |
| Oct 2017 | Kerry Bateman | 1,764 | 43rd Guernsey Holiday Open | B01 |
| Feb 2026 | Jarek Wieczorek | 1,744 | Sligo Chess & Culture Festival - Weekender Championship | A06 |
| Jan 2026 | James Duffy | 1,670 | Sligo Chess & Culture Festival - Weekender Championship | B07 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| 43rd Guernsey Holiday Open | 2017 | 7 | 5 | 1,839 |
| 42nd Guernsey Holiday Open | 2016 | 6 | 3.5 | 1,779 |
| 44th Guernsey Open | 2018 | 6 | 3.5 | 1,738 |
| Sligo Chess & Culture Festival - Weekender Championship | 2026 | 5 | 3 | 1,769 |
| 41st Guernsey Holiday Open | 2015 | 5 | 2 | 1,519 |
| ch-ENNI Sligo | 2024 | 4 | 1 | 1,351 |
| ch-Munster | 2015 | 4 | 1 | 1,808 |
| 19th Calvia Amateur Open | 2022 | 2 | 1 | 2,019 |
Interactive opening tree from all 42 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Denis O`Connell's chess games?
42 games by Denis O`Connell, from Aug 2015 to Oct 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 Denis O`Connell has played.
What does Denis O`Connell play on the first move as White?
Across 2 games with White in our database, Denis O`Connell opens with 1.d4 (100% of games). Against 1.e4 as Black, Denis O`Connell answers 1...d5 (100% of games). Against 1.d4: 1...d5 (75% of games), 1...Nf6 (13% of games), 1...e5 (13% of games).
What openings does Denis O`Connell play as White?
As White, Denis O`Connell's most-played openings in our database are: Danish Gambit (5 games, 0.0% win rate); Sicilian: Wing Gambit (3 games, 66.7% win rate); Sicilian: Alapin (3 games, 33.3% win rate). The full breakdown of 22 games with White is in the table above.
What openings does Denis O`Connell play as Black?
As Black, Denis O`Connell most often plays: Scandinavian Defense: Modern Variation (6 games, 33.3% win rate); Queen's Pawn Game (3 games, 33.3% win rate); Albin Countergambit (2 games, 0.0% win rate). See the table above for the top ten Black openings across 20 games.
What is Denis O`Connell's FIDE rating?
Denis O`Connell is currently rated 1,720 in classical chess, 1,804 in rapid and 1,757 in blitz. Peak classical rating: 1,843 (Sep 2015).
How many games has Denis O`Connell played?
Our database contains 42 games by Denis O`Connell, covering Aug 2015 to Oct 2026. Overall record: 14 wins, 12 draws, 16 losses (33.3% win rate).
How do I prepare against Denis O`Connell?
42 games by Denis O`Connell 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.