Prepare against Osvaldo Zambrana
GM · Bolivia · World #2,610 classical · FIDE ID 3300200
When preparing against Osvaldo Zambrana, expect 1.e4 in 100% of White games. Against 1.e4 the reply is 1...c5 (98% of games); against 1.d4, 1...Nf6 (49%). Lowest win rate among frequent openings: Queen's Gambit Accepted as Black, 17.6% over 17 games.
Our database contains 862 games by Osvaldo Zambrana, covering Apr 2003 to Sep 2026. Below you'll find Osvaldo Zambrana's most-played openings with White and Black, career performance record, notable wins and top events — everything you need to scout Osvaldo Zambrana 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 | 2,355 | 2,515 | Jul 2010 |
| Rapid | 2,437 | 2,472 | Nov 2015 |
| Blitz | 2,376 | 2,445 | Jan 2022 |
Performance record
| Split | Games | Wins | Draws | Losses | Win rate |
|---|---|---|---|---|---|
| Overall | 862 | 367 | 289 | 206 | 42.6% |
| As White | 442 | 205 | 144 | 93 | 46.4% |
| As Black | 420 | 162 | 145 | 113 | 38.6% |
Move-by-move preparation stats
Straight from the preparation tree built over all of Osvaldo Zambrana's games — the same tree the interactive prep board lets you walk to any depth. Scores are from Osvaldo Zambrana's side.
First moves as White (442 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| e4 | 441 | 99.8% | 62.7% |
| c4 | 1 | 0.2% | 50.0% |
Main lines as White
- 1.e4 — 100% of White games, 62.7% score
- …c5 (50% of these games) — Zambrana usually continues Nf3 (61.4% score)
- …e5 (20% of these games) — Zambrana usually continues Nf3 (63.6% score)
- …e6 (16% of these games) — Zambrana usually continues d4 (59.4% score)
- 1.c4 — 0% of White games, 50.0% score
- …Nf6 (100% of these games) — Zambrana usually continues Nc3 (50.0% score)
As Black against 1.e4 (210 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| c5 | 206 | 98.1% | 55.8% |
| e6 | 2 | 1.0% | 50.0% |
| d5 | 1 | 0.5% | 0.0% |
As Black against 1.d4 (134 games)
| Move | Games | Share | Player score |
|---|---|---|---|
| Nf6 | 66 | 49.3% | 62.1% |
| d5 | 62 | 46.3% | 43.5% |
| e6 | 5 | 3.7% | 60.0% |
| c5 | 1 | 0.7% | 100.0% |
Osvaldo Zambrana's chess games
All 862 games by Osvaldo Zambrana 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: 367 wins, 289 draws, 206 losses.
Openings as White
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B41 | Sicilian | 83 | 32/34/17 | 38.6% |
| C07 | French: Tarrasch Variation | 66 | 27/22/17 | 40.9% |
| B96 | Sicilian: Najdorf | 58 | 26/18/14 | 44.8% |
| C55 | Italian Game | 34 | 22/4/8 | 64.7% |
| C54 | Italian Game: Giuoco Pianissimo | 24 | 8/10/6 | 33.3% |
| B33 | Sicilian: Sveshnikov | 19 | 11/3/5 | 57.9% |
| B78 | Sicilian: Dragon | 18 | 8/4/6 | 44.4% |
| B48 | Sicilian: Taimanov | 17 | 6/8/3 | 35.3% |
| B35 | Sicilian: Accelerated Dragon | 15 | 7/6/2 | 46.7% |
| C42 | Petrov's Defense | 14 | 7/6/1 | 50.0% |
Openings as Black
| ECO | Opening | Games | W/D/L | Win rate |
|---|---|---|---|---|
| B33 | Sicilian: Sveshnikov | 66 | 30/23/13 | 45.5% |
| B31 | Sicilian: Rossolimo | 34 | 7/13/14 | 20.6% |
| D46 | Slav Defense | 32 | 9/12/11 | 28.1% |
| B80 | Sicilian: Najdorf | 29 | 12/8/9 | 41.4% |
| B22 | Sicilian | 27 | 13/9/5 | 48.1% |
| B23 | Sicilian: Closed | 25 | 10/10/5 | 40.0% |
| A46 | Indian Defense | 24 | 6/8/10 | 25.0% |
| A67 | Benoni Defense | 20 | 10/4/6 | 50.0% |
| A11 | English Opening | 17 | 9/4/4 | 52.9% |
| D27 | Queen's Gambit Accepted | 17 | 3/8/6 | 17.6% |
Notable wins
| Date | Opponent | Elo | Event | ECO |
|---|---|---|---|---|
| Aug 2012 | Sergei Movsesian | 2,698 | Olympiad-40 | B46 |
| May 2023 | Sandro Mareco | 2,633 | 17th American Continental | C50 |
| Jul 2009 | Jaan Ehlvest | 2,614 | 6th American Continental | B19 |
| Jul 2008 | Maxim Rodshtein | 2,605 | 26th Andorra Open | D70 |
| Sep 2024 | Cristobal Henriquez Villagra | 2,604 | Olympiad-45 | B31 |
Top events
| Event | Year | Games | Score | TPR |
|---|---|---|---|---|
| ch-BOL | 2024 | 62 | 46 | 2,346 |
| Sao Paulo zt 2.4 | 2007 | 26 | 10 | 2,364 |
| Rio de Janeiro zt 2.4 | 2011 | 17 | 11 | 2,421 |
| Online Olym Div3 D | 2021 | 13 | 6 | 2,231 |
| Online Olympiad Div2 E | 2021 | 13 | 6 | 2,449 |
| Olympiad-37 | 2006 | 13 | 8 | 2,428 |
| 40th Capablanca Memorial Premier I | 2005 | 13 | 4.5 | 2,323 |
| Capablanca Memorial Premier II 38th | 2003 | 13 | 6 | 2,404 |
Frequent opponents
Head-to-head records: Andres Rodriguez Vila (17 games) · Rafael Leitao (14 games)
Interactive opening tree from all 862 games, weak-spot detection and engine analysis.
Start preparationFrequently asked questions
Where can I find Osvaldo Zambrana's chess games?
862 games by Osvaldo Zambrana, 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 Osvaldo Zambrana has played.
What does Osvaldo Zambrana play on the first move as White?
Across 442 games with White in our database, Osvaldo Zambrana opens with 1.e4 (100% of games), 1.c4 (0% of games). Against 1.e4 as Black, Osvaldo Zambrana answers 1...c5 (98% of games), 1...e6 (1% of games), 1...d5 (0% of games). Against 1.d4: 1...Nf6 (49% of games), 1...d5 (46% of games), 1...e6 (4% of games).
What openings does Osvaldo Zambrana play as White?
As White, Osvaldo Zambrana's most-played openings in our database are: Sicilian (83 games, 38.6% win rate); French: Tarrasch Variation (66 games, 40.9% win rate); Sicilian: Najdorf (58 games, 44.8% win rate). The full breakdown of 442 games with White is in the table above.
What openings does Osvaldo Zambrana play as Black?
As Black, Osvaldo Zambrana most often plays: Sicilian: Sveshnikov (66 games, 45.5% win rate); Sicilian: Rossolimo (34 games, 20.6% win rate); Slav Defense (32 games, 28.1% win rate). See the table above for the top ten Black openings across 420 games.
What is Osvaldo Zambrana's FIDE rating?
Osvaldo Zambrana is currently rated 2,355 in classical chess, 2,437 in rapid and 2,376 in blitz. Peak classical rating: 2,515 (Jul 2010).
How many games has Osvaldo Zambrana played?
Our database contains 862 games by Osvaldo Zambrana, covering Apr 2003 to Sep 2026. Overall record: 367 wins, 289 draws, 206 losses (42.6% win rate).
How do I prepare against Osvaldo Zambrana?
862 games by Osvaldo Zambrana 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.