Player profile
Pacheco Calderon, Jarek
Dossier
26 of 28 games analyzed.
Accuracy: 88.1%
Opened e4: 13/13
Castled kingside: 21Same-side castling: 18Opposite-side castling: 6Castled queenside: 3Did not castle: 2
Fianchettoed kingside: 11Played in the center: 10Played on the queenside: 7Played on the kingside: 5Fianchettoed queenside: 3
Space advantage: 19Backward pawn: 18Sacrificed material: 18Active pieces: 17Initiated exchanges: 17Kept the bishop pair: 14Isolated pawn: 11Missed tactics: 7Avoided exchanges: 2Played gambits: 1
Openings
Click "+" to add that group to the games list below. Multiple groups can be added at once.
As White 15 games 5W 7D 3L
Sicilian Defense 4 games 3W 0D 1L
Najdorf Variation 2 games 2W 0D 0L
English Attack
2 games
2W
0D
0L
Kalashnikov Variation 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Lasker-Pelikan Variation 1 game 1W 0D 0L
Sveshnikov Variation, Chelyabinsk Variation
1 game
1W
0D
0L
Pirc Defense 3 games 1W 2D 0L
Classical Variation 2 games 1W 1D 0L
Quiet System, Czech Defense
1 game
1W
0D
0L
Quiet System, Parma Defense
1 game
0W
1D
0L
(unspecified) 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Caro-Kann Defense 3 games 0W 2D 1L
Exchange Variation 2 games 0W 1D 1L
(unspecified)
2 games
0W
1D
1L
Advance Variation 1 game 0W 1D 0L
Tal Variation
1 game
0W
1D
0L
Italian Game 3 games 1W 2D 0L
Classical Variation 2 games 1W 1D 0L
Giuoco Pianissimo
2 games
1W
1D
0L
Hungarian Defense 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
Scandinavian Defense 1 game 0W 1D 0L
Modern Variation 1 game 0W 1D 0L
Gipslis Variation
1 game
0W
1D
0L
French Defense 1 game 0W 0D 1L
Advance Variation 1 game 0W 0D 1L
Main Line
1 game
0W
0D
1L
As Black 13 games 8W 3D 2L
Sicilian Defense 9 games 7W 2D 0L
Dragon Variation 3 games 2W 1D 0L
(unspecified)
2 games
1W
1D
0L
Levenfish Variation
1 game
1W
0D
0L
Accelerated Dragon 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
(unspecified) 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
Alapin Variation 1 game 0W 1D 0L
Barmen Defense
1 game
0W
1D
0L
Closed 1 game 1W 0D 0L
Botvinnik Defense, with Nge2
1 game
1W
0D
0L
Delayed Alapin Variation 1 game 1W 0D 0L
with d6
1 game
1W
0D
0L
Grand Prix Attack 1 game 1W 0D 0L
(unspecified)
1 game
1W
0D
0L
English Opening 1 game 0W 0D 1L
Symmetrical Variation 1 game 0W 0D 1L
Ultra-Symmetrical Variation
1 game
0W
0D
1L
Indian Defense 1 game 0W 1D 0L
(unspecified) 1 game 0W 1D 0L
(unspecified)
1 game
0W
1D
0L
King's Indian Defense 1 game 0W 0D 1L
Karpov System 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
French Defense 1 game 1W 0D 0L
Advance Variation 1 game 1W 0D 0L
Euwe Variation
1 game
1W
0D
0L
Blunders Top 4 of 116
This player's costliest moves in analyzed games. Can you find the winning move?
Games Showing all 28 games
| Date | Event | Round | Color | Opponent | Result | Accuracy % | First moves |
|---|---|---|---|---|---|---|---|
| 2026.07.24 | Round 4: Sanchez Penagos, Rubiela - Pacheco Calderon, Jarek | 4.11 | 2026.07.24 Sanchez Penagos, Rubiela (4423755) (1707) | 1 | 92.80% | 1. e4 c5 2. Nf3 g6 3. d4 cxd4 | |
| 2026.07.23 | Round 3: Pacheco Calderon, Jarek - Gonzalez Gonzalez, Enoel | 3.10 | 2026.07.23 Gonzalez Gonzalez, Enoel (3100642) (1865) | ½ | 89.20% | 1. e4 d5 2. exd5 Nf6 3. Nf3 Nxd5 | |
| 2026.07.21 | Round 2: Youngblood, William Justin - Pacheco Calderon, Jarek | 2.15 | 2026.07.21 Youngblood, William Justin (3121259) | 1 | 93.60% | 1. e4 c5 2. d3 Nc6 3. Be3 d6 | |
| 2026.07.20 | Round 1: Pacheco Calderon, Jarek - Jaquez, Juan Manuel | 1.6 | 2026.07.20 Jaquez, Juan Manuel (6400230) (2116) | 0 | 76.00% | 1. e4 e6 2. d4 d5 3. e5 c5 | |
| 2025.12.19 | Round 8: Pacheco Calderon, Jarek - Tjin Kon Kiem, Ethan | 8.3 | 2025.12.19 Tjin Kon Kiem, Ethan (8206040) (1849) | 1 | 97.70% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2025.12.18 | Round 7: Lara Santos, Angel Sebastian - Pacheco Calderon, Jarek | 7.2 | 2025.12.18 Lara Santos, Angel Sebastian (6430910) (1976) | ½ | 64.10% | 1. e4 c5 2. Nf3 g6 3. c3 d5 | |
| 2025.12.18 | Round 6: Pacheco Calderon, Jarek - Little, Savion | 6.3 | 2025.12.18 Little, Savion (11106883) (1788) | 1 | 91.50% | 1. e4 d6 2. d4 Nf6 3. Nc3 g6 | |
| 2025.12.17 | Round 5: Jaikaran, Aaron - Pacheco Calderon, Jarek | 5.5 | 2025.12.17 Jaikaran, Aaron (11105275) (1714) | 1 | 96.50% | 1. e4 c5 2. Nc3 Nc6 3. g3 g6 | |
| 2025.12.16 | Round 4: Pacheco Calderon, Jarek - Rosas Valdes, Javier Alfonso | 4.8 | 2025.12.16 Rosas Valdes, Javier Alfonso (6609147) (1504) | 1 | 96.10% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2025.12.16 | Round 3: Fung, Thie-Yen - Pacheco Calderon, Jarek | 3.3 | 2025.12.16 Fung, Thie-Yen (8205841) (1657) | 0 | 84.50% | 1. c4 c5 2. Nc3 g6 3. g3 Bg7 | |
| 2025.12.15 | Round 2: Pacheco Calderon, Jarek - Graham, Dez | 2.4 | 2025.12.15 Graham, Dez (33100306) (1661) | ½ | 88.40% | 1. e4 c6 2. d4 d5 3. e5 Bf5 | |
| 2025.12.15 | Round 1: Green, Nathaniel - Pacheco Calderon, Jarek | 1.4 | 2025.12.15 Green, Nathaniel (7406800) (1617) | 1 | 97.20% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2025.12.09 | Round 9: Pacheco Calderon, Jarek - Jimenez Leyva, Diego | 9.1 | 2025.12.09 Jimenez Leyva, Diego (3534235) (1973) | 0 | 77.40% | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2025.07.27 | II Torneo Internacional de Ajedrez Jose Celso Barbosa | 9.6 | 2025.07.27 Zilleruelo Irizarry, Diego (3101460) (2085) | 0 | 84.00% | 1. e4 c6 2. d4 d5 3. exd5 cxd5 | |
| 2025.07.26 | II Torneo Internacional de Ajedrez Jose Celso Barbosa | 8.9 | 2025.07.26 Melendez Padilla, Isabelo (3101010) (1901) | 1 | 86.50% | 1. e4 c5 2. Nf3 d6 3. c3 Nf6 | |
| 2025.07.25 | II Torneo Internacional de Ajedrez Jose Celso Barbosa | 7.9 | 2025.07.25 Lopez Rivera, Jose A. (3106837) (1758) | ½ | 91.30% | 1. e4 c6 2. d4 d5 3. exd5 cxd5 | |
| 2025.07.25 | II Torneo Internacional de Ajedrez Jose Celso Barbosa | 6.8 | 2025.07.25 Ayala Sanchez, Abnel (3101380) (1921) | ½ | 91.40% | 1. d4 Nf6 2. Nd2 d5 3. e3 c5 | |
| 2025.07.23 | II Torneo Internacional de Ajedrez Jose Celso Barbosa | 5.12 | 2025.07.23 Burgos Rodriguez, Edison (3109283) (1818) | ½ | 95.40% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2025.07.23 | II Torneo Internacional de Ajedrez Jose Celso Barbosa | 4.10 | 2025.07.23 Done Sanchez, Andrews J. (3112861) (1826) | ½ | - | 1. e4 d6 2. d4 Nf6 3. Nc3 g6 | |
| 2025.07.21 | II Torneo Internacional de Ajedrez Jose Celso Barbosa | 3.5 | 2025.07.21 Torres, Javier Antonio (2006634) (2077) | 0 | 87.70% | 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 | |
| 2025.07.20 | II Torneo Internacional de Ajedrez Jose Celso Barbosa | 2.11 | 2025.07.20 Ortega Rivera, Gadiel L. (3110958) (1568) | 1 | - | 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 | |
| 2024.07.27 | Round 7: Ian G Rodriguez Rodriguez - Pacheco Calderon, Jarek | 7.13 | 2024.07.27 Ian G Rodriguez Rodriguez (1592) | 1 | 87.70% | 1. e4 c5 2. Nf3 d6 3. d4 cxd4 | |
| 2024.07.26 | Round 6: Pacheco Calderon, Jarek - Vasquez Pagan, Diego | 6.12 | 2024.07.26 Vasquez Pagan, Diego (3110982) (1668) | ½ | 92.70% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 | |
| 2024.07.25 | Round 5: Pacheco Calderon, Jarek - De La Rosa Diaz, Osvaldo J. | 5.13 | 2024.07.25 De La Rosa Diaz, Osvaldo J. (3109143) (1678) | 1 | 89.40% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 | |
| 2024.07.25 | Round 4: Ortiz Lespier, Jaime - Pacheco Calderon, Jarek | 4.15 | 2024.07.25 Ortiz Lespier, Jaime (3112586) | 1 | 88.30% | 1. e4 c5 2. c3 e6 3. d4 d5 | |
| 2024.07.24 | Round 3: Pacheco Calderon, Jarek - Done Sanchez, Andrews J. | 3.12 | 2024.07.24 Done Sanchez, Andrews J. (3112861) (1714) | ½ | 78.70% | 1. e4 d6 2. b3 Nf6 3. Nc3 g6 | |
| 2024.07.23 | Round 2: Patel, Yash - Pacheco Calderon, Jarek | 2.15 | 2024.07.23 Patel, Yash (3112470) (1572) | 1 | 90.00% | 1. e4 c5 2. Nc3 Nc6 3. f4 g6 | |
| 2024.07.22 | Round 1: Pacheco Calderon, Jarek - Rodriguez Rosario, Manuel | 1.11 | 2024.07.22 Rodriguez Rosario, Manuel (3113540) (1533) | ½ | 82.10% | 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 |