Player profile
Brian Jefferson Alejandro Martinez
Dossier
2 of 2 games analyzed.
Accuracy: 73.8%
Opened d4: 1/1
Castled kingside: 2Same-side castling: 2
Fianchettoed kingside: 1
Avoided exchanges: 2Kept the bishop pair: 1Backward pawn: 1Missed tactics: 1Isolated pawn: 1Space advantage: 1Played gambits: 1Sacrificed material: 1
Openings
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As White 1 game 0W 0D 1L
Rapport-Jobava System 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
As Black 1 game 0W 0D 1L
Queen's Pawn Game 1 game 0W 0D 1L
(unspecified) 1 game 0W 0D 1L
(unspecified)
1 game
0W
0D
1L
Blunders Top 4 of 18
This player's costliest moves in analyzed games. Can you find the winning move?
Games Showing all 2 games
| Date | Event | Round | Color | Opponent | Result | Accuracy % | First moves |
|---|---|---|---|---|---|---|---|
| 2026.10.25 | Round 4: Vazquez Islas, Ivan - Brian Jefferson Alejandro Martinez | 4.4 | 2026.10.25 Vazquez Islas, Ivan (5150930) (1832) | 0 | 77.10% | 1. d4 d5 2. e3 Nf6 3. f4 g6 | |
| 2026.10.25 | Round 3: Brian Jefferson Alejandro Martinez - Peralta Olvera, Jonatan | 3.4 | 2026.10.25 Peralta Olvera, Jonatan (29656850) | 0 | 70.40% | 1. d4 d5 2. Nc3 e6 3. Bf4 Nf6 |