Player profile
Zambrana, Osvaldo
Dossier
98 of 113 games analyzed.
Accuracy: 92%
Opened e4: 45/45
Castled kingside: 63Same-side castling: 59Castled queenside: 16Opposite-side castling: 12Did not castle: 2
Played on the kingside: 27Played in the center: 25Played on the queenside: 22Fianchettoed kingside: 20Fianchettoed queenside: 13
Active pieces: 55Initiated exchanges: 50Backward pawn: 47Sacrificed material: 46Kept the bishop pair: 43Space advantage: 41Isolated pawn: 33Missed tactics: 18Avoided exchanges: 18Played gambits: 11
Openings
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As White 51 games 25W 13D 13L
Sicilian Defense 21 games 11W 6D 4L
Najdorf Variation 9 games 5W 2D 2L
(unspecified)
7 games
5W
1D
1L
Opocensky Variation, Traditional Line
1 game
0W
1D
0L
Petronić Attack
1 game
0W
0D
1L
Lasker-Pelikan Variation 4 games 3W 1D 0L
Sveshnikov Variation, Chelyabinsk Variation
3 games
2W
1D
0L
Bird Variation
1 game
1W
0D
0L
Dragon Variation 3 games 0W 1D 2L
Yugoslav Attack, Czerniak Variation
2 games
0W
1D
1L
(unspecified)
1 game
0W
0D
1L
Accelerated Dragon 2 games 2W 0D 0L
Modern Bc4 Variation
2 games
2W
0D
0L
Richter-Rauzer Variation 2 games 1W 1D 0L
Traditional Variation
1 game
1W
0D
0L
Neo-Modern Variation
1 game
0W
1D
0L
Taimanov Variation 1 game 0W 1D 0L
Bastrikov Variation, English Attack
1 game
0W
1D
0L
Italian Game 15 games 7W 3D 5L
Classical Variation 9 games 4W 3D 2L
Giuoco Pianissimo
9 games
4W
3D
2L
Two Knights Defense 6 games 3W 0D 3L
Modern Bishop's Opening
6 games
3W
0D
3L
French Defense 8 games 4W 1D 3L
Tarrasch Variation 8 games 4W 1D 3L
Morozevich Variation
5 games
3W
1D
1L
Open System, Euwe-Keres Line
1 game
1W
0D
0L
Botvinnik Variation
1 game
0W
0D
1L
Eliskases Variation
1 game
0W
0D
1L
Caro-Kann Defense 2 games 1W 1D 0L
Classical Variation 1 game 0W 1D 0L
Spassky Variation
1 game
0W
1D
0L
Tartakower Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Petrov's Defense 1 game 1W 0D 0L
Classical Attack 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Scandinavian Defense 1 game 0W 1D 0L
Gubinsky-Melts Defense 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
King's Pawn Game 1 game 1W 0D 0L
(unspecified) 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Modern Defense 1 game 0W 1D 0L
Lizard Defense 1 game 0W 1D 0L
Mittenberger Gambit
1 game
0W
1D
0L
Alekhine Defense 1 game 0W 0D 1L
Modern Variation 1 game 0W 0D 1L
Alburt Variation
1 game
0W
0D
1L
As Black 45 games 14W 19D 9L
Sicilian Defense 21 games 8W 9D 4L
Lasker-Pelikan Variation 7 games 3W 3D 1L
Sveshnikov Variation, Chelyabinsk Variation
3 games
3W
0D
0L
(unspecified)
2 games
0W
1D
1L
Sveshnikov Variation
2 games
0W
2D
0L
Closed 5 games 1W 4D 0L
Traditional
3 games
0W
3D
0L
(unspecified)
2 games
1W
1D
0L
Nyezhmetdinov-Rossolimo Attack 4 games 1W 0D 3L
Fianchetto Variation
4 games
1W
0D
3L
Alapin Variation 2 games 1W 1D 0L
Barmen Defense
1 game
0W
1D
0L
Smith-Morra Declined
1 game
1W
0D
0L
Godiva Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Open 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Scheveningen Variation 1 game 0W 1D 0L
Classical Main Line
1 game
0W
1D
0L
Queen's Gambit Declined 5 games 0W 3D 1L
Queen's Knight Variation 3 games 0W 2D 1L
(unspecified)
3 games
0W
2D
1L
Three Knights Variation 1 game 0W 0D 0L
(unspecified)
1 game
0W
0D
0L
(unspecified) 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Benoni Defense 4 games 2W 1D 1L
Taimanov Variation 2 games 2W 0D 0L
(unspecified)
2 games
2W
0D
0L
Fianchetto Variation 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
(unspecified) 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Indian Defense 3 games 2W 1D 0L
Anti-Nimzo-Indian 2 games 1W 1D 0L
(unspecified)
2 games
1W
1D
0L
Knights Variation 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
English Opening 2 games 1W 0D 0L
Agincourt Defense 2 games 1W 0D 0L
Bogoljubow Defense
2 games
1W
0D
0L
Catalan Opening 2 games 0W 0D 1L
(unspecified) 2 games 0W 0D 1L
(unspecified)
2 games
0W
0D
1L
Queen's Pawn Game 2 games 1W 1D 0L
Zukertort Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
London System 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
King's Indian Attack, with e6 2 games 0W 0D 2L
(unspecified) 2 games 0W 0D 2L
(unspecified)
2 games
0W
0D
2L
Nimzo-Indian Defense 2 games 0W 2D 0L
Classical Variation 2 games 0W 2D 0L
(unspecified)
1 game
0W
1D
0L
Noa Variation
1 game
0W
1D
0L
Zukertort Opening 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Bogo-Indian Defense 1 game 0W 1D 0L
Vitolins Variation 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Blunders Top 4 of 316
This player's costliest moves in analyzed games. Can you find the winning move?
Games Showing all 113 games
| Date | Event | Round | Color | Opponent | Result | Accuracy % | First moves |
|---|---|---|---|---|---|---|---|
| 2026.09.27 | Olymp 2026 Open | 11.150 | 2026.09.27 Chan, Kim Yew (5717981) (2383) | ½ | 75.30% | 1. e4 c6 2. d4 d5 3. Nc3 dxe4 | |
| 2026.09.23 | Olymp 2026 Open | 7.138 | 2026.09.23 Sonis, Francesco (895733) (2539) | 0 | 70.60% | 1. d4 d5 2. c4 e6 3. Nc3 h6 | |
| 2026.09.21 | Olymp 2026 Open | 6.222 | 2026.09.21 Novak, Attila Robert (727067) (2144) | 1 | 90.80% | 1. e4 e6 2. d4 d5 3. Nd2 c5 | |
| 2026.09.20 | Olymp 2026 Open | 5.14 | 2026.09.20 Glaves, Raheem (7402724) (2127) | 1 | 96.50% | 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 | |
| 2026.09.19 | Olymp 2026 Open | 4.90 | 2026.09.19 Blohberger, Felix (1632051) (2552) | 0 | 90.50% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 | |
| 2026.09.17 | Olymp 2026 Open | 2.90 | 2026.09.17 Daneshvar, Bardiya (12576468) (2572) | 0 | 84.00% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 | |
| 2026.06.26 | Round 9: Zambrana, Osvaldo - Hernandez Ojeda, Garry Anatholy | 9.6 | 2026.06.26 Hernandez Ojeda, Garry Anatholy (3840395) (2173) | 1 | - | 1. e4 e6 2. d4 d5 3. Nd2 Be7 | |
| 2026.06.26 | Round 8: Quirhuayo Chumbe, German Gonzalo - Zambrana, Osvaldo | 8.5 | 2026.06.26 Quirhuayo Chumbe, German Gonzalo (3813509) (2354) | 0 | - | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2026.06.26 | Round 7: Zambrana, Osvaldo - Cabezas Solano, David Alejandro | 7.8 | 2026.06.26 Cabezas Solano, David Alejandro (6507522) (2197) | 1 | - | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2026.06.26 | Round 6: Robles Cerron, Sebastian - Zambrana, Osvaldo | 6.8 | 2026.06.26 Robles Cerron, Sebastian (3845117) (2030) | * | - | 1. d4 Nf6 2. c4 e6 3. Nf3 d5 | |
| 2026.06.26 | Round 5: Zambrana, Osvaldo - Ouellet, Maili-Jade | 5.9 | 2026.06.26 Ouellet, Maili-Jade (2620472) (2214) | ½ | 88.00% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2026.06.26 | Round 4: Palomino Quispe, Mateo Henry - Zambrana, Osvaldo | 4.16 | 2026.06.26 Palomino Quispe, Mateo Henry (3851419) (2058) | * | - | 1. c4 e6 2. g3 d5 3. Bg2 Nf6 | |
| 2026.06.26 | Round 3: Zambrana, Osvaldo - Caja Cruz, Gabriel | 3.9 | 2026.06.26 Caja Cruz, Gabriel (3836312) (1967) | ½ | 98.50% | 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 | |
| 2026.06.26 | Round 2: Moscoso Tellez, Joe Goldtie Marshall - Zambrana, Osvaldo | 2.9 | 2026.06.26 Moscoso Tellez, Joe Goldtie Marshall (3882594) (1783) | 1 | 95.60% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2026.06.26 | Round 1: Zambrana, Osvaldo - Pomalaza Yataco, Fabrizzio Omar | 1.9 | 2026.06.26 Pomalaza Yataco, Fabrizzio Omar (81438044) (1654) | 1 | - | ||
| 2026.03.29 | Round 9: Monroy G., Javier A. - Zambrana, Osvaldo | 8.2 | 2026.03.29 Monroy G., Javier A. (3302067) (2015) | 1 | - | 1. d4 Nf6 2. Nf3 e6 3. g3 d5 | |
| 2026.03.28 | Round 8: Zambrana, Osvaldo - Montevilla Cahuasa, Jonathan I. | 7.5 | 2026.03.28 Montevilla Cahuasa, Jonathan I. (3322220) (2182) | 1 | 97.60% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2026.03.28 | Round 7: Zambrana, Osvaldo - Claure Verastegui, Rene David | 6.1 | 2026.03.28 Claure Verastegui, Rene David (3335194) (2190) | ½ | - | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2026.03.27 | Round 6: Ticona Rocabado, Licael Roderick - Zambrana, Osvaldo | 5.5 | 2026.03.27 Ticona Rocabado, Licael Roderick (3319113) (2399) | ½ | - | 1. d4 Nf6 2. c4 e6 3. Nf3 d5 | |
| 2026.03.26 | Round 5: Zambrana, Osvaldo - Gemy, Jose Daniel | 4.2 | 2026.03.26 Gemy, Jose Daniel (3301478) (2333) | ½ | - | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | |
| 2026.03.26 | Round 4: Yucra Valdes, Diego Alonso - Zambrana, Osvaldo | 3.4 | 2026.03.26 Yucra Valdes, Diego Alonso (3333264) (1979) | 0 | - | 1. d4 Nf6 2. c4 e6 3. g3 Bb4+ | |
| 2026.03.25 | Round 3: Zambrana, Osvaldo - Titichoca Daza, Daniel | 2.3 | 2026.03.25 Titichoca Daza, Daniel (3309550) (2090) | ½ | 98.40% | 1. e4 c5 2. Nf3 g6 3. d4 cxd4 | |
| 2026.03.25 | Round 2: Mayta Aiza, Maveric - Zambrana, Osvaldo | 1.3 | 2026.03.25 Mayta Aiza, Maveric (3307336) (2200) | ½ | 94.20% | 1. e4 c5 2. c3 d5 3. exd5 Qxd5 | |
| 2026.03.24 | Round 1: Zambrana, Osvaldo - Bolanos, Fernando | 1.4 | 2026.03.24 Bolanos, Fernando (3304094) (2202) | 1 | 96.10% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | |
| 2025.04.06 | Ronda 9: Tapia, Mauricio - Zambrana, Osvaldo | 9.1 | 2025.04.06 Tapia, Mauricio (3305686) (1894) | ½ | - | 1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 | |
| 2025.04.05 | Ronda 8: Zambrana, Osvaldo - Gemy, Jose Daniel | 8.1 | 2025.04.05 Gemy, Jose Daniel (3301478) (2328) | ½ | - | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | |
| 2025.04.04 | Ronda 6: Zambrana, Osvaldo - Titichoca Daza, Daniel | 6.1 | 2025.04.04 Titichoca Daza, Daniel (3309550) (2150) | 1 | 93.60% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2025.04.03 | Ronda 5: Bolanos, Fernando - Zambrana, Osvaldo | 5.1 | 2025.04.03 Bolanos, Fernando (3304094) (2211) | ½ | - | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2025.04.03 | Ronda 4: Zambrana, Osvaldo - Ticona Rocabado, Licael Roderick | 4.1 | 2025.04.03 Ticona Rocabado, Licael Roderick (3319113) (2353) | 0 | 92.40% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | |
| 2025.04.02 | Ronda 3: Monroy G., Javier A. - Zambrana, Osvaldo | 3.1 | 2025.04.02 Monroy G., Javier A. (3302067) (1973) | ½ | 96.80% | 1. d4 d5 2. Nf3 e6 3. c4 h6 | |
| 2025.04.02 | Ronda 2: Zambrana, Osvaldo - Claure Verastegui, Rene David | 2.1 | 2025.04.02 Claure Verastegui, Rene David (3335194) (2080) | ½ | 95.30% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2025.04.01 | Ronda 1: Martinez, Ariel - Zambrana, Osvaldo | 1.1 | 2025.04.01 Martinez, Ariel (3301745) (2133) | 1 | 94.00% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2025.02.02 | Round 9: Zambrana, Osvaldo - Carbajal, Augusto | 9.9 | 2025.02.02 Carbajal, Augusto (3800610) (2103) | 1 | 96.40% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2025.02.01 | Round 8: Vasquez Vargas, Henry Richard - Zambrana, Osvaldo | 8.8 | 2025.02.01 Vasquez Vargas, Henry Richard (3836878) (2146) | ½ | 93.60% | 1. Nf3 d5 2. e3 Nf6 3. b3 g6 | |
| 2025.02.01 | Round 7: Zambrana, Osvaldo - Alvarado Zamora, Albert | 7.7 | 2025.02.01 Alvarado Zamora, Albert (3825094) (2156) | ½ | 98.70% | 1. e4 g6 2. d4 Bg7 3. Nc3 d5 | |
| 2025.01.31 | Round 6: Mayta Aiza, Maveric - Zambrana, Osvaldo | 6.8 | 2025.01.31 Mayta Aiza, Maveric (3307336) (2146) | ½ | 89.30% | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 | |
| 2025.01.30 | Round 5: Zambrana, Osvaldo - Alarco, Alvaro | 5.11 | 2025.01.30 Alarco, Alvaro (3804097) (2022) | 1 | 98.80% | 1. e4 e6 2. d4 d5 3. Nd2 Be7 | |
| 2025.01.30 | Round 4: Soria Castillo, Ricardo - Zambrana, Osvaldo | 4.12 | 2025.01.30 Soria Castillo, Ricardo (3803414) (1884) | 1 | 95.90% | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 | |
| 2025.01.29 | Round 3: Zambrana, Osvaldo - Moscoso Tellez, Joe Goldtie Marshall | 3.19 | 2025.01.29 Moscoso Tellez, Joe Goldtie Marshall (3882594) (1816) | 1 | 95.50% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2025.01.28 | Round 2: Reyes Zavaleta, Cristhian Yamil - Zambrana, Osvaldo | 2.7 | 2025.01.28 Reyes Zavaleta, Cristhian Yamil (3844340) (1986) | * | - | 1. d4 d5 2. c4 e6 3. g3 Nf6 | |
| 2025.01.28 | Round 1: Zambrana, Osvaldo - Gallegos Quispe, Daniel Paolo | 1.8 | 2025.01.28 Gallegos Quispe, Daniel Paolo (3879585) (1803) | 1 | 93.80% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2024.12.03 | Ronda 5: Giron Chavez, David Emanuel - Zambrana, Osvaldo | 5.5 | 2024.12.03 Giron Chavez, David Emanuel (7300697) (2113) | 1 | 93.90% | 1. Nf3 Nf6 2. g3 d5 3. c4 e6 | |
| 2024.12.03 | Ronda 4: Zambrana, Osvaldo - Avila Pavas, Santiago | 4.9 | 2024.12.03 Avila Pavas, Santiago (4437128) (2430) | 0 | 92.40% | 1. e4 Nf6 2. e5 Nd5 3. Nf3 d6 | |
| 2024.12.03 | Ronda 3: Zambrana, Osvaldo - Cori, Jorge | 3.1 | 2024.12.03 Cori, Jorge (3802272) (2590) | 0 | 84.80% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2024.12.03 | Ronda 2: Baules Rodriguez, Jorge Luis - Zambrana, Osvaldo | 2.9 | 2024.12.03 Baules Rodriguez, Jorge Luis (6600247) (2365) | 0 | 69.00% | 1. Nf3 Nf6 2. g3 e6 3. Bg2 d5 | |
| 2024.12.03 | Ronda 1: Zambrana, Osvaldo - Ynojosa Aponte, Felix Jose | 1.5 | 2024.12.03 Ynojosa Aponte, Felix Jose (3900258) (2458) | 1 | 95.10% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2024.12.02 | Ronda 5: Giron Chavez, David Emanuel - Zambrana, Osvaldo | 5.5 | 2024.12.02 Giron Chavez, David Emanuel (7300697) | 0 | 87.50% | 1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 | |
| 2024.12.02 | Ronda 4: Zambrana, Osvaldo - Avila Pavas, Santiago | 4.9 | 2024.12.02 Avila Pavas, Santiago (4437128) (2416) | 0 | 83.20% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2024.12.02 | Ronda 3: Zambrana, Osvaldo - Cori, Jorge | 3.1 | 2024.12.02 Cori, Jorge (3802272) (2612) | 0 | 89.20% | 1. e4 e6 2. d4 d5 3. Nd2 Nf6 | |
| 2024.12.02 | Ronda 2: Baules Rodriguez, Jorge Luis - Zambrana, Osvaldo | 2.9 | 2024.12.02 Baules Rodriguez, Jorge Luis (6600247) (2359) | 0 | 91.10% | 1. d4 Nf6 2. c4 e6 3. Nf3 c5 | |
| 2024.10.01 | IBEROAMERICANO | 9.17 | 2024.10.01 Sos Andreu, Eric (22247017) (2364) | ½ | 87.60% | 1. d4 d5 2. c4 e6 3. Nf3 h6 | |
| 2024.09.30 | IBEROAMERICANO | 8.11 | 2024.09.30 Ladron De Guevara Pinto, Paolo (2290847) (2371) | 0 | 92.50% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2024.09.29 | IBEROAMERICANO | 7.13 | 2024.09.29 Ticona Rocabado, Licael Roderick (3319113) (2321) | 1 | 95.40% | 1. d4 Nf6 2. c4 e6 3. Nf3 d5 | |
| 2024.09.28 | IBEROAMERICANO | 6.6 | 2024.09.28 Vallejo Pons, Francisco (2205530) (2657) | 0 | 86.80% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2024.09.27 | IBEROAMERICANO | 5.16 | 2024.09.27 Domingo Nunez, Alejandro (22245561) (2328) | 1 | 91.30% | 1. e4 c5 2. d4 cxd4 3. c3 Nf6 | |
| 2024.09.27 | IBEROAMERICANO | 4.13 | 2024.09.27 Escalona Landi, Samid Eduardo (3937437) (2305) | ½ | 97.30% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2024.09.26 | IBEROAMERICANO | 3.22 | 2024.09.26 Donate Moreno, Silvia (24581887) (2126) | 1 | 94.20% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2024.09.25 | IBEROAMERICANO | 2.14 | 2024.09.25 Mingarro Carceller, Sergi (2246678) (2273) | 0 | 89.20% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2024.09.25 | IBEROAMERICANO | 1.18 | 2024.09.25 Suarez Gomez, Paula (24537217) (2111) | 1 | 95.50% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2024.09.22 | 45th FIDE Chess Olympiad | 11.169 | 2024.09.22 Bai, Adelard (16301188) (2378) | ½ | 98.40% | 1. d4 d5 2. c4 e6 3. Nc3 h6 | |
| 2024.09.21 | 45th FIDE Chess Olympiad | 10.121 | 2024.09.21 Amin, Bassem (10601457) (2636) | 0 | 87.70% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2024.09.20 | 45th FIDE Chess Olympiad | 9.177 | 2024.09.20 Christie, Joshua (7402074) (2271) | 1 | 93.50% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2024.09.19 | 45th FIDE Chess Olympiad | 8.117 | 2024.09.19 Henriquez Villagra, Cristobal (3409350) (2604) | 1 | 98.30% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 | |
| 2024.09.18 | 45th FIDE Chess Olympiad | 7.177 | 2024.09.18 Espinoza Solano, Jose Nahum (6104428) (2156) | ½ | 91.70% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2024.09.16 | 45th FIDE Chess Olympiad | 6.105 | 2024.09.16 Supi, Luis Paulo (2106388) (2570) | ½ | 93.40% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | |
| 2024.09.15 | 45th FIDE Chess Olympiad | 5.185 | 2024.09.15 Mesfin, Leykun (15700097) (2118) | 1 | 95.20% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2024.09.14 | 45th FIDE Chess Olympiad | 4.93 | 2024.09.14 Peralta, Fernando (105309) (2558) | 0 | 87.50% | 1. e4 e6 2. d4 d5 3. Nd2 c5 | |
| 2024.09.12 | 45th FIDE Chess Olympiad | 2.117 | 2024.09.12 Bjerre, Jonas Buhl (1444948) (2648) | 0 | 88.80% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | |
| 2024.08.03 | Round 9: Zambrana, Osvaldo - Reyes Zavaleta, Fabian Ricardo | 9.7 | 2024.08.03 Reyes Zavaleta, Fabian Ricardo (3844153) (2099) | 1 | 93.20% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2024.08.02 | Round 8: Vivas Zamora, Fabian Ernesto - Zambrana, Osvaldo | 8.4 | 2024.08.02 Vivas Zamora, Fabian Ernesto (3902480) (2386) | ½ | 98.00% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2024.08.02 | Round 7: Zambrana, Osvaldo - Terry, Renato | 7.2 | 2024.08.02 Terry, Renato (3803457) (2514) | ½ | 86.60% | 1. e4 e6 2. d4 d5 3. Nd2 Be7 | |
| 2024.08.01 | Round 6: Castellanos Villela, Alejandro - Zambrana, Osvaldo | 6.2 | 2024.08.01 Castellanos Villela, Alejandro (3446379) (2239) | ½ | 95.00% | 1. e4 c5 2. Nf3 Nc6 3. Nc3 e6 | |
| 2024.07.31 | Round 5: Zambrana, Osvaldo - Sanchez Negreiros, Jose Alberto | 5.4 | 2024.07.31 Sanchez Negreiros, Jose Alberto (3851516) (1915) | 1 | 92.70% | 1. e4 e6 2. d4 d5 3. Nd2 Be7 | |
| 2024.07.31 | Round 4: Zambrana, Osvaldo - Caceres Sandoval, Eduardo | 4.7 | 2024.07.31 Caceres Sandoval, Eduardo (3830250) (1986) | 1 | 94.20% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2024.07.30 | Round 3: Soriano Quispe, Ivan Excender - Zambrana, Osvaldo | 3.8 | 2024.07.30 Soriano Quispe, Ivan Excender (3822656) (2295) | ½ | 95.10% | 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 | |
| 2024.07.29 | Round 2: Zambrana, Osvaldo - Colque Mendoza, Fabrizio Daniel | 2.16 | 2024.07.29 Colque Mendoza, Fabrizio Daniel (3899055) (1686) | 1 | 96.80% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | |
| 2024.07.29 | Round 1: Reyes Zavaleta, Diego Alexander - Zambrana, Osvaldo | 1.5 | 2024.07.29 Reyes Zavaleta, Diego Alexander (3844145) (1868) | ½ | 92.80% | 1. d4 Nf6 2. c4 e6 3. Nf3 c5 | |
| 2024.06.02 | Round 11: Zambrana, Osvaldo - Campos, Maria Jose | 2024.06.02 Campos, Maria Jose (146803) (2214) | 0 | 89.40% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | ||
| 2024.05.31 | Round 10: Salinas Herrera, Pablo - Zambrana, Osvaldo | 2024.05.31 Salinas Herrera, Pablo (3407128) (2485) | 0 | 85.50% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 | ||
| 2024.05.30 | Round 9: Zambrana, Osvaldo - Arenas, David | 2024.05.30 Arenas, David (4403177) (2345) | 1 | 88.60% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | ||
| 2024.05.29 | Round 8: Corrales Jimenez, Fidel - Zambrana, Osvaldo | 2024.05.29 Corrales Jimenez, Fidel (3506690) (2545) | ½ | 96.50% | 1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ | ||
| 2024.05.28 | Round 7: Cadena M, Gustavo Adolfo - Zambrana, Osvaldo | 2024.05.28 Cadena M, Gustavo Adolfo (4404815) (2228) | 1 | 92.40% | 1. d4 Nf6 2. c4 e6 3. Nc3 c5 | ||
| 2024.05.27 | Round 6: Zambrana, Osvaldo - Terry, Renato | 2024.05.27 Terry, Renato (3803457) (2521) | 0 | 92.00% | 1. e4 e6 2. d4 d5 3. Nd2 Be7 | ||
| 2024.05.27 | Round 5: Zambrana, Osvaldo - Supi, Luis Paulo | 2024.05.27 Supi, Luis Paulo (2106388) (2581) | 1 | 86.00% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | ||
| 2024.05.27 | Round 4: Quesada Perez, Luis Ernesto - Zambrana, Osvaldo | 2024.05.27 Quesada Perez, Luis Ernesto (3520773) (2567) | ½ | 97.60% | 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 | ||
| 2024.05.27 | Round 3: Zambrana, Osvaldo - Zapata Montoya, Andres Jeronimo | 2024.05.27 Zapata Montoya, Andres Jeronimo (4495306) (2140) | 1 | 92.00% | 1. e4 c6 2. d4 d5 3. Nc3 dxe4 | ||
| 2024.05.27 | Round 2: Tobar B, Carlos Andres - Zambrana, Osvaldo | 2024.05.27 Tobar B, Carlos Andres (4430638) (2018) | 1 | 93.00% | 1. d4 Nf6 2. c4 e6 3. Nc3 c5 | ||
| 2024.05.27 | Round 1: Zambrana, Osvaldo - Uribe Valencia, Victor Alexis | 2024.05.27 Uribe Valencia, Victor Alexis (4433742) (1855) | 1 | 97.10% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | ||
| 2023.12.02 | Round 9: Osvaldo Zambrana - Sandro Mareco | 2023.12.02 Sandro Mareco (2606) | 1 | 91.60% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | ||
| 2023.12.01 | Round 8: Alex Antonio Delgado Rosas - Osvaldo Zambrana | 2023.12.01 Alex Antonio Delgado Rosas (2105) | 1 | 96.80% | 1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 | ||
| 2023.11.30 | Round 7: Osvaldo Zambrana - Gilberto Hernandez Guerrero | 2023.11.30 Gilberto Hernandez Guerrero (2527) | ½ | 97.30% | 1. e4 c5 2. Nf3 e6 3. d4 cxd4 | ||
| 2023.11.29 | Round 6: Elier Miranda Mesa - Osvaldo Zambrana | 2023.11.29 Elier Miranda Mesa (2490) | ½ | 88.00% | 1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 | ||
| 2023.11.29 | Round 5: Osvaldo Zambrana - Anahi Ortiz Verdezoto | 2023.11.29 Anahi Ortiz Verdezoto (2175) | 1 | 96.60% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | ||
| 2023.11.28 | Round 4: Dylan Isidro Berdayes Ason - Osvaldo Zambrana | 2023.11.28 Dylan Isidro Berdayes Ason (2507) | ½ | 92.50% | 1. d4 e6 2. c4 d5 3. Nc3 h6 | ||
| 2023.11.26 | Round 3: Osvaldo Zambrana - David Alejandro Cabezas Solano | 2023.11.26 David Alejandro Cabezas Solano (2171) | 1 | 88.60% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | ||
| 2023.11.25 | Round 1: Jeigoth Pastor Carvajal - Osvaldo Zambrana | 2023.11.25 Jeigoth Pastor Carvajal (1985) | ½ | 87.10% | 1. e4 c5 2. Nc3 Nc6 3. Bb5 e6 | ||
| 2023.09.22 | Round 9: Osvaldo Zambrana - Fabian Vivas Zamora | 2023.09.22 Fabian Vivas Zamora | ½ | 97.70% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | ||
| 2023.09.21 | Round 8: Sergio Barrientos - Osvaldo Zambrana | 2023.09.21 Sergio Barrientos | 1 | 96.40% | 1. d4 d5 2. c4 e6 3. Nf3 h6 | ||
| 2023.09.20 | Round 7: Osvaldo Zambrana - Lucas Costamilan Tomiello | 2023.09.20 Lucas Costamilan Tomiello | 1 | 91.50% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | ||
| 2023.09.19 | Round 6: Diego Flores Quillas - Osvaldo Zambrana | 2023.09.19 Diego Flores Quillas | ½ | 85.80% | 1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 | ||
| 2023.09.18 | Round 5: Osvaldo Zambrana - Jorge Cori | 2023.09.18 Jorge Cori | ½ | 96.00% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | ||
| 2023.09.17 | Round 4: Fernando Fernandez - Osvaldo Zambrana | 2023.09.17 Fernando Fernandez | 1 | 94.70% | 1. e4 c5 2. Nf3 e6 3. c3 Nf6 | ||
| 2023.09.16 | I CAMPEONATO SUDAMERICANO ABSOLUTO 2023 | 3 | 2023.09.16 Deivy Vera | ½ | 98.50% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | |
| 2023.05.23 | Round 11: Osvaldo Zambrana - Jorge Cori | 2023.05.23 Jorge Cori | 0 | 86.30% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | ||
| 2023.05.22 | Round 10: Fidel Corrales Jimenez - Osvaldo Zambrana | 2023.05.22 Fidel Corrales Jimenez | 0 | 88.50% | 1. d4 Nf6 2. c4 e6 3. Nc3 c5 | ||
| 2023.05.21 | Round 9: Osvaldo Zambrana - Luis Paulo Supi | 2023.05.21 Luis Paulo Supi | 1 | 80.30% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | ||
| 2023.05.21 | Round 8: Osvaldo Zambrana - Sandro Mareco | 2023.05.21 Sandro Mareco | 1 | 92.70% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | ||
| 2023.05.20 | Round 7: David Daniel Camacho Campusano - Osvaldo Zambrana | 2023.05.20 David Daniel Camacho Campusano | 1 | 96.80% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | ||
| 2023.05.19 | Round 6: Osvaldo Zambrana - Luis Ernesto Quesada Perez | 2023.05.19 Luis Ernesto Quesada Perez | ½ | 94.10% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | ||
| 2023.05.17 | Round 4: Osvaldo Zambrana - Carlos Daniel Albornoz Cabrera | 2023.05.17 Carlos Daniel Albornoz Cabrera | 0 | 96.90% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | ||
| 2023.04.02 | Round 3: Matias Carcamo - Osvaldo Zambrana | 2023.04.02 Matias Carcamo | ½ | 92.50% | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 | ||
| 2023.04.02 | Round 2: Osvaldo Zambrana - Marzo Daniel Lucero | 2023.04.02 Marzo Daniel Lucero | 1 | 98.40% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 | ||
| 2023.04.01 | Round 1: Damian Ferreyra - Osvaldo Zambrana | 2023.04.01 Damian Ferreyra | 1 | 93.70% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 |