Prepare against Romualdo Mendonca Da Costa
Brazil · World #78,282 classical · FIDE ID 2123550
When preparing against Romualdo Mendonca Da Costa, expect 1.d4 in 50% of White games. Against 1.e4 the reply is 1...c6 (45% of games); against 1.d4, 1...d5 (64%).
Our database contains 77 games by Romualdo Mendonca Da Costa, covering Oct 2008 to Jul 2026. Below you'll find Romualdo Mendonca Da Costa's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Romualdo Mendonca Da Costa 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 | 1,795 | 1,873 | Jan 2025 |
| Rapid | 1,864 | 1,877 | Sep 2025 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 77 | 26 | 14 | 36 | 33.8% |
| As White | 36 | 11 | 6 | 19 | 30.6% |
| As Black | 41 | 15 | 8 | 17 | 36.6% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Romualdo Mendonca Da Costa's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Romualdo Mendonca Da Costa's side.
First moves as White (36 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d4 | 18 | 50.0% | 38.9% |
| e4 | 16 | 44.4% | 40.6% |
| Nf3 | 1 | 2.8% | 0.0% |
| c4 | 1 | 2.8% | 50.0% |
Main lines as White
- 1.d4 — 50% of White games, 38.9% score
- …Nf6 (61% of these games) — Costa usually continues c4 (45.5% score)
- …d5 (28% of these games) — Costa usually continues c4 (40.0% score)
- …g6 (6% of these games) — Costa usually continues c4 (0.0% score)
- 1.e4 — 44% of White games, 40.6% score
- …c5 (50% of these games) — Costa usually continues Nf3 (20.0% score)
- …e5 (38% of these games) — Costa usually continues Nf3 (58.3% score)
- …e6 (6% of these games) — Costa usually continues d4 (100.0% score)
As Black against 1.e4 (22 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c6 | 10 | 45.5% | 25.0% |
| e5 | 10 | 45.5% | 55.0% |
| c5 | 1 | 4.5% | 100.0% |
| Nc6 | 1 | 4.5% | 50.0% |
As Black against 1.d4 (14 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| d5 | 9 | 64.3% | 38.9% |
| Nf6 | 5 | 35.7% | 80.0% |
Romualdo Mendonca Da Costa's chess games
All 77 games by Romualdo Mendonca Da Costa in the Chess.ceo database (Oct 2008 - Jul 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: 26 wins, 14 draws, 36 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B30 | Sicilian | 4 | 0/2/2 | 0.0% |
| E46 | Nimzo-Indian: Rubinstein System | 3 | 0/1/2 | 0.0% |
| B23 | Sicilian: Closed | 3 | 1/0/2 | 33.3% |
| C78 | Ruy Lopez: Morphy Defense | 3 | 2/0/1 | 66.7% |
| A58 | Benoni Defense | 3 | 1/0/2 | 33.3% |
| A53 | Indian Defense | 2 | 1/1/0 | 50.0% |
| E70 | King's Indian: Sämisch | 2 | 2/0/0 | 100.0% |
| E20 | Indian Defense: Anti-Nimzo-Indian | 1 | 0/0/1 | 0.0% |
| B19 | Caro-Kann: Classical | 1 | 0/0/1 | 0.0% |
| C44 | King's Knight Opening | 1 | 0/1/0 | 0.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| D45 | Slav Defense | 5 | 1/0/4 | 20.0% |
| C98 | Ruy Lopez: Closed | 4 | 1/2/1 | 25.0% |
| A34 | English Opening: Symmetrical | 3 | 0/1/2 | 0.0% |
| B13 | Caro-Kann: Exchange Variation | 3 | 0/1/2 | 0.0% |
| B18 | Caro-Kann: Classical | 2 | 1/1/0 | 50.0% |
| A65 | Benoni Defense | 2 | 2/0/0 | 100.0% |
| C50 | Italian Game | 2 | 2/0/0 | 100.0% |
| B12 | Caro-Kann: Advance Variation | 2 | 0/0/2 | 0.0% |
| B12 | Caro-Kann: Fantasy Variation | 2 | 0/1/1 | 0.0% |
| C44 | Danish Gambit | 1 | 0/0/1 | 0.0% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Jul 2009 | Paula Fernanda Delai | 2,042 | 6th American Continental | E88 |
| Mar 2023 | Sebastiao Pedro Dos Santos | 2,002 | chTB-Paulista | D02 |
| Aug 2009 | Gilmar Dias Machado | 1,960 | 6th American Continental | D09 |
| Jun 2012 | Julio Eimard De Freitas | 1,868 | Natal Potiguar Open | E10 |
| Jul 2009 | Joao Batista Aragao Neto | 1,859 | 6th American Continental | C77 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| 6th American Continental | 2009 | 8 | 3 | 1,934 |
| Brazil Chess - Floripa | 2026 | 8 | 3.5 | 1,724 |
| ch-BRA U26 | 2019 | 7 | 3 | 1,820 |
| Natal Potiguar Open | 2012 | 7 | 4 | 1,974 |
| 11th Floripa Open | 2025 | 7 | 3.5 | 1,861 |
| Sao Bernardo LXSBC 3rd | 2008 | 6 | 2 | 1,862 |
| Sao Bernardo do Campo Open | 2016 | 6 | 3 | 1,413 |
| Sao Bernardo do Campo LXSBC Open 08th | 2011 | 5 | 2.5 | 2,074 |
Interactive opening tree from all 77 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Romualdo Mendonca Da Costa's chess games?
77 games by Romualdo Mendonca Da Costa, from Oct 2008 to Jul 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 Romualdo Mendonca Da Costa has played.
What does Romualdo Mendonca Da Costa play on the first move as White?
Across 36 games with White in our database, Romualdo Mendonca Da Costa opens with 1.d4 (50% of games), 1.e4 (44% of games), 1.Nf3 (3% of games). Against 1.e4 as Black, Romualdo Mendonca Da Costa answers 1...c6 (45% of games), 1...e5 (45% of games), 1...c5 (5% of games). Against 1.d4: 1...d5 (64% of games), 1...Nf6 (36% of games).
What openings does Romualdo Mendonca Da Costa play as White?
As White, Romualdo Mendonca Da Costa's most-played openings in our database are: Sicilian (4 games, 0.0% win rate); Nimzo-Indian: Rubinstein System (3 games, 0.0% win rate); Sicilian: Closed (3 games, 33.3% win rate). The full breakdown of 36 games with White is in the table above.
What openings does Romualdo Mendonca Da Costa play as Black?
As Black, Romualdo Mendonca Da Costa most often plays: Slav Defense (5 games, 20.0% win rate); Ruy Lopez: Closed (4 games, 25.0% win rate); English Opening: Symmetrical (3 games, 0.0% win rate). See the table above for the top ten Black openings across 41 games.
What is Romualdo Mendonca Da Costa's FIDE rating?
Romualdo Mendonca Da Costa is currently rated 1,795 in classical chess, 1,864 in rapid. Peak classical rating: 1,873 (Jan 2025).
How many games has Romualdo Mendonca Da Costa played?
Our database contains 77 games by Romualdo Mendonca Da Costa, covering Oct 2008 to Jul 2026. Overall record: 26 wins, 14 draws, 36 losses (33.8% win rate).
How do I prepare against Romualdo Mendonca Da Costa?
77 games by Romualdo Mendonca Da Costa 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.