Prepare against Paul Sean O`Neill
Ireland · World #40,610 classical · FIDE ID 2507692
When preparing against Paul Sean O`Neill, expect 1.d4 in 52% of White games. Against 1.e4 the reply is 1...c5 (63% of games); against 1.d4, 1...Nf6 (83%).
Our database contains 40 games by Paul Sean O`Neill, covering Jun 2015 to Oct 2026. Below you'll find Paul Sean O`Neill's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Paul Sean O`Neill 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 | 1,933 | 2,040 | Jan 2019 |
| Rapid | 1,926 | 1,926 | Oct 2026 |
| Blitz | 1,869 | 1,926 | Oct 2024 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 40 | 9 | 8 | 23 | 22.5% |
| As White | 21 | 6 | 2 | 13 | 28.6% |
| As Black | 19 | 3 | 6 | 10 | 15.8% |
FIDE rated record
From FIDE's official rated-game ledger (2012-2025): 406 rated games against 257 different opponents, across 102 events in 3 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 | 234 | 100 | 49 | 85 | 42.7% | 1,977 | 1,954 | 13 |
| Rapid | 55 | 32 | 7 | 16 | 58.2% | 1,538 | 1,667 | 6 |
| Blitz | 117 | 57 | 11 | 49 | 48.7% | 1,838 | 1,894 | 6 |
Against the field
| Opposition | Games | W | D | L | Win rate |
|---|---|---|---|---|---|
| Against higher-rated | 90 | 22 | 22 | 46 | 24.4% |
| Against lower-rated | 75 | 56 | 4 | 15 | 74.7% |
Wins over titled players: 11 vs FM · 2 vs CM.
Tournament wins
2 tournament wins from 41 events, 1 of them outright.
Year by year
| Year | Games | W | D | L | Avg opp | Perf |
|---|---|---|---|---|---|---|
| 2025 | 9 | 3 | 2 | 4 | – | – |
| 2024 | 23 | 12 | 2 | 9 | 1,746 | 1,821 |
| 2023 | 10 | 5 | 3 | 2 | – | – |
| 2022 | 20 | 12 | 3 | 5 | 1,597 | 1,785 |
| 2021 | 5 | 3 | 1 | 1 | – | – |
| 2020 | 10 | 6 | 3 | 1 | 1,791 | 1,962 |
| 2019 | 41 | 18 | 5 | 18 | 1,996 | 2,019 |
| 2018 | 83 | 39 | 17 | 27 | 1,891 | 1,953 |
| 2017 | 71 | 34 | 10 | 27 | 1,960 | 1,938 |
| 2016 | 68 | 30 | 11 | 27 | 1,939 | 1,979 |
| 2015 | 27 | 7 | 5 | 15 | 2,011 | 1,789 |
| 2014 | 22 | 11 | 2 | 9 | – | – |
| 2013 | 14 | 9 | 2 | 3 | 105 | 265 |
| 2012 | 3 | 0 | 1 | 2 | – | – |
Where Paul Sean O`Neill has played
Ireland (97) · England (4) · Croatia (1)
Move-by-move preparation stats
Straight from the preparation tree built over all of Paul Sean O`Neill's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Paul Sean O`Neill's side.
First moves as White (21 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 11 | 52.4% | 36.4% |
| e4 | 10 | 47.6% | 30.0% |
Main lines as White
- 1.d4 — 52% of White games, 36.4% score
- …Nf6 (36% of these games) — O`Neill usually continues Nf3 (0.0% score)
- …d5 (36% of these games) — O`Neill usually continues Nf3 (100.0% score)
- …e6 (18% of these games) — O`Neill usually continues g3 (0.0% score)
- 1.e4 — 48% of White games, 30.0% score
- …e5 (30% of these games) — O`Neill usually continues Nf3 (0.0% score)
- …c6 (30% of these games) — O`Neill usually continues Nc3 (66.7% score)
- …c5 (30% of these games) — O`Neill usually continues Nf3 (0.0% score)
As Black against 1.e4 (8 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 5 | 62.5% | 30.0% |
| c6 | 1 | 12.5% | 50.0% |
| d5 | 1 | 12.5% | 50.0% |
| e5 | 1 | 12.5% | 0.0% |
As Black against 1.d4 (6 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 5 | 83.3% | 40.0% |
| d5 | 1 | 16.7% | 0.0% |
Paul Sean O`Neill's chess games
All 40 games by Paul Sean O`Neill in the Chess.ceo database (Jun 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: 9 wins, 8 draws, 23 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B11 | Caro-Kann: Two Knights Variation | 3 | 2/0/1 | 66.7% |
| D15 | Slav Defense | 3 | 1/0/2 | 33.3% |
| A90 | Horwitz Defense | 2 | 0/0/2 | 0.0% |
| A46 | Indian Defense | 2 | 0/1/1 | 0.0% |
| A11 | Indian Defense: Tartakower Attack | 2 | 1/1/0 | 50.0% |
| C79 | Ruy Lopez: Morphy Defense | 1 | 0/0/1 | 0.0% |
| A46 | Sicilian | 1 | 0/0/1 | 0.0% |
| B76 | Sicilian: Dragon | 1 | 0/0/1 | 0.0% |
| B98 | Sicilian: Najdorf | 1 | 0/0/1 | 0.0% |
| C65 | Ruy Lopez | 1 | 0/0/1 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B52 | Sicilian: Moscow Variation | 2 | 0/1/1 | 0.0% |
| E92 | King's Indian Defense: Orthodox Variation | 2 | 0/1/1 | 0.0% |
| D85 | Grünfeld Defense | 2 | 1/0/1 | 50.0% |
| A30 | English Opening: Symmetrical | 1 | 0/1/0 | 0.0% |
| A08 | King's Indian Attack | 1 | 1/0/0 | 100.0% |
| B07 | King's Indian Defense: Fianchetto Variation | 1 | 0/0/1 | 0.0% |
| D31 | Queen's Gambit Declined | 1 | 0/0/1 | 0.0% |
| D58 | Queen's Indian Defense | 1 | 0/1/0 | 0.0% |
| C60 | Ruy Lopez | 1 | 0/0/1 | 0.0% |
| B05 | Scandinavian Defense: Modern Variation | 1 | 0/1/0 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Aug 2018 | John Kennedy | 2,077 | ch-IRL | A08 |
| Jul 2016 | Eamon Keogh | 2,021 | ch-IRL | B07 |
| Aug 2021 | Alexsejus Pachalov | 2,007 | ch-IRL 100th Weekend Open | A11 |
| Mar 2017 | Jacob Manton | 1,900 | chT3N-BCF 1617 (4NCL) | D94 |
| Jan 2025 | Brian Gallagher | 1,887 | Sligo Masters 2025 | D02 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| ch-IRL | 2018 | 15 | 5 | 1,945 |
| 25th ch-EU U18 | 2015 | 9 | 2 | 1,789 |
| Gonzaga Masters | 2016 | 4 | 1.5 | 1,602 |
| Sligo Masters 2025 | 2025 | 4 | 1.5 | 1,744 |
| ch-IRL 100th Weekend Open | 2021 | 3 | 1.5 | 1,873 |
| chT3N-BCF 1718 (4NCL) | 2018 | 3 | 0.5 | 1,617 |
| chT3N-BCF 1617 (4NCL) | 2017 | 2 | 1 | 1,980 |
Interactive opening tree from all 40 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Paul Sean O`Neill's chess games?
40 games by Paul Sean O`Neill, from Jun 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 Paul Sean O`Neill has played.
What does Paul Sean O`Neill play on the first move as White?
Across 21 games with White in our database, Paul Sean O`Neill opens with 1.d4 (52% of games), 1.e4 (48% of games). Against 1.e4 as Black, Paul Sean O`Neill answers 1...c5 (63% of games), 1...c6 (13% of games), 1...d5 (13% of games). Against 1.d4: 1...Nf6 (83% of games), 1...d5 (17% of games).
What openings does Paul Sean O`Neill play as White?
As White, Paul Sean O`Neill's most-played openings in our database are: Caro-Kann: Two Knights Variation (3 games, 66.7% win rate); Slav Defense (3 games, 33.3% win rate); Horwitz Defense (2 games, 0.0% win rate). The full breakdown of 21 games with White is in the table above.
What openings does Paul Sean O`Neill play as Black?
As Black, Paul Sean O`Neill most often plays: Sicilian: Moscow Variation (2 games, 0.0% win rate); King's Indian Defense: Orthodox Variation (2 games, 0.0% win rate); Grünfeld Defense (2 games, 50.0% win rate). See the table above for the top ten Black openings across 19 games.
What is Paul Sean O`Neill's FIDE rating?
Paul Sean O`Neill is currently rated 1,933 in classical chess, 1,926 in rapid and 1,869 in blitz. Peak classical rating: 2,040 (Jan 2019).
How many games has Paul Sean O`Neill played?
Our database contains 40 games by Paul Sean O`Neill, covering Jun 2015 to Oct 2026. Overall record: 9 wins, 8 draws, 23 losses (22.5% win rate).
How do I prepare against Paul Sean O`Neill?
40 games by Paul Sean O`Neill 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.