Prepare against Alex Antonio Delgado Rosas
CM · Panama · World #8,856 classical · FIDE ID 6602150
When preparing against Alex Antonio Delgado Rosas, expect 1.d4 in 80% of White games. Against 1.e4 the reply is 1...c5 (46% of games); against 1.d4, 1...Nf6 (68%). Lowest win rate among frequent openings: London System as White, 30.0% over 20 games.
Our database contains 180 games by Alex Antonio Delgado Rosas, covering May 2015 to Oct 2026. Below you'll find Alex Antonio Delgado Rosas's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Alex Antonio Delgado Rosas 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 | 2,189 | 2,192 | Feb 2026 |
| Rapid | 2,086 | 2,121 | Sep 2026 |
| Blitz | 2,107 | 2,147 | Dec 2025 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 180 | 68 | 19 | 93 | 37.8% |
| As White | 91 | 35 | 9 | 47 | 38.5% |
| As Black | 89 | 33 | 10 | 46 | 37.1% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Alex Antonio Delgado Rosas's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Alex Antonio Delgado Rosas's side.
First moves as White (83 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 66 | 79.5% | 45.5% |
| c4 | 12 | 14.5% | 54.2% |
| Nf3 | 5 | 6.0% | 40.0% |
Main lines as White
- 1.d4 — 80% of White games, 45.5% score
- …Nf6 (65% of these games) — Rosas usually continues c4 (39.1% score)
- …d5 (20% of these games) — Rosas usually continues c4 (85.7% score)
- …f5 (5% of these games) — Rosas usually continues c4 (50.0% score)
- 1.c4 — 14% of White games, 54.2% score
- …Nf6 (25% of these games) — Rosas usually continues Nc3 (50.0% score)
- …e5 (25% of these games) — Rosas usually continues Nc3 (66.7% score)
- …e6 (17% of these games) — Rosas usually continues Nf3 (0.0% score)
As Black against 1.e4 (41 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 19 | 46.3% | 55.3% |
| Nc6 | 15 | 36.6% | 26.7% |
| c6 | 5 | 12.2% | 0.0% |
| e5 | 1 | 2.4% | 0.0% |
| d5 | 1 | 2.4% | 100.0% |
As Black against 1.d4 (25 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 17 | 68.0% | 64.7% |
| d5 | 8 | 32.0% | 31.3% |
Alex Antonio Delgado Rosas's chess games
All 180 games by Alex Antonio Delgado Rosas in the Chess.ceo database (May 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: 68 wins, 19 draws, 93 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| A45 | London System | 20 | 6/4/10 | 30.0% |
| A46 | Indian Defense | 8 | 2/1/5 | 25.0% |
| A57 | Benoni Defense | 5 | 2/0/3 | 40.0% |
| E06 | Catalan | 4 | 3/0/1 | 75.0% |
| A50 | King's Indian Defense | 4 | 1/1/2 | 25.0% |
| A25 | English Opening: Reverse Sicilian | 4 | 2/0/2 | 50.0% |
| A85 | Dutch Defense | 3 | 1/0/2 | 33.3% |
| E91 | King's Indian Defense: Orthodox Variation | 3 | 1/0/2 | 33.3% |
| D94 | Grünfeld Defense | 3 | 2/0/1 | 66.7% |
| E40 | Nimzo-Indian: Rubinstein System | 3 | 2/0/1 | 66.7% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B00 | Nimzowitsch Defense | 11 | 1/2/8 | 9.1% |
| D44 | Slav Defense | 8 | 1/2/5 | 12.5% |
| D36 | Indian Defense | 6 | 5/0/1 | 83.3% |
| A36 | Sicilian | 5 | 2/0/3 | 40.0% |
| B90 | Sicilian: Najdorf | 5 | 2/0/3 | 40.0% |
| A13 | English Opening | 4 | 2/0/2 | 50.0% |
| B00 | Nimzowitsch Defense: Scandinavian Variation | 4 | 2/0/2 | 50.0% |
| D00 | Queen's Pawn Game: Chigorin Variation | 4 | 2/0/2 | 50.0% |
| E15 | Catalan | 3 | 1/0/2 | 33.3% |
| A57 | Benoni Defense | 3 | 3/0/0 | 100.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Feb 2023 | Alexander Katz | 2,470 | Titled Tue Early | D61 |
| Mar 2023 | Alexey Kornyukov | 2,452 | Titled Tue Late | D36 |
| Dec 2023 | Roberto Carlos Sanchez Alvarez | 2,437 | 9th ch-Iberoamerican | D02 |
| Mar 2023 | Lazaro Lorenzo De La Riva | 2,420 | Titled Tue Late | A46 |
| Nov 2023 | Vladimir Georgiev | 2,408 | 4th Panama Open | D00 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| Titled Tuesday | 2023 | 91 | 32.5 | 2,096 |
| Olympiad-44 | 2022 | 9 | 5 | 2,103 |
| Olympiad-45 | 2024 | 9 | 4 | 2,202 |
| 5th Panama Open 2026 | 2026 | 9 | 5 | 2,168 |
| San Jose de David | 2020 | 9 | 8.5 | 2,059 |
| 9th ch-Iberoamerican | 2023 | 8 | 5 | 2,271 |
| XIII Juegos Sudamericanos Santa Fe 2026 | Blitz Freestyle 960 | 2026 | 7 | 0 | 1,857 |
| XIII Juegos Sudamericanos Santa Fe 2026 | Freestyle Rápido | 2026 | 7 | 2 | 2,096 |
Interactive opening tree from all 180 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Alex Antonio Delgado Rosas's chess games?
180 games by Alex Antonio Delgado Rosas, from May 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 Alex Antonio Delgado Rosas has played.
What does Alex Antonio Delgado Rosas play on the first move as White?
Across 83 games with White in our database, Alex Antonio Delgado Rosas opens with 1.d4 (80% of games), 1.c4 (14% of games), 1.Nf3 (6% of games). Against 1.e4 as Black, Alex Antonio Delgado Rosas answers 1...c5 (46% of games), 1...Nc6 (37% of games), 1...c6 (12% of games). Against 1.d4: 1...Nf6 (68% of games), 1...d5 (32% of games).
What openings does Alex Antonio Delgado Rosas play as White?
As White, Alex Antonio Delgado Rosas's most-played openings in our database are: London System (20 games, 30.0% win rate); Indian Defense (8 games, 25.0% win rate); Benoni Defense (5 games, 40.0% win rate). The full breakdown of 91 games with White is in the table above.
What openings does Alex Antonio Delgado Rosas play as Black?
As Black, Alex Antonio Delgado Rosas most often plays: Nimzowitsch Defense (11 games, 9.1% win rate); Slav Defense (8 games, 12.5% win rate); Indian Defense (6 games, 83.3% win rate). See the table above for the top ten Black openings across 89 games.
What is Alex Antonio Delgado Rosas's FIDE rating?
Alex Antonio Delgado Rosas is currently rated 2,189 in classical chess, 2,086 in rapid and 2,107 in blitz. Peak classical rating: 2,192 (Feb 2026).
How many games has Alex Antonio Delgado Rosas played?
Our database contains 180 games by Alex Antonio Delgado Rosas, covering May 2015 to Oct 2026. Overall record: 68 wins, 19 draws, 93 losses (37.8% win rate).
How do I prepare against Alex Antonio Delgado Rosas?
180 games by Alex Antonio Delgado Rosas 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.