Pattern Drill reads up to 500 of your games from Chess.com or Lichess and checks every position where a fork, a pin or a mate in one was on the board. It counts how often you found it and how often you played something else, then builds your practice around the pattern you miss most.
Three chess patterns are checked in your games: forks, pins and mate in one. For each, you see how many times you missed it and how many times you found it. Counting both matters, because missing a pattern you usually find is a different problem from missing one you rarely see.
The board shows one of the positions where you missed your top pattern, taken from your own game.
Start Training serves puzzles on your most-missed pattern, drawn from over five million positions from real games and matched to your rating. Each puzzle has a hint if you are stuck, and the coach can explain why the winning move works.
If your games show no missed patterns, the drill rotates through the core tactical motifs, including forks, pins, skewers, discovered attacks and back-rank mates, so there is always something to train.
Each pattern has ingredients you can look for before you move. A fork needs two targets that one piece can hit at once, usually undefended pieces or a king and a piece. A pin needs two enemy pieces on the same line with the more valuable one behind. A mate in one starts with the checks: list every check you have before you play anything else.
The habit that carries over to games is to run that short check on every move, not only when you suspect a tactic. Most missed tactics are missed because nobody looked, not because they were hard to see. Solving puzzles on the same pattern builds the reflex that makes the check automatic.
Most tactics in real games are not found by calculating every line. They are recognised: a knight that can land on a square hitting two pieces, a piece stuck in front of its king. The faster you recognise the shape, the more time you have to check it. Drilling the exact patterns you miss is a direct way to start seeing them in your own games.
To be rated on every tactical motif rather than the three found in your games, use Elo Maxing. For broad practice at your level, use Puzzle Training, and to make a fixed set of patterns automatic, try the Woodpecker Method. If the tactics you miss cluster in one opening, the Opening Trainer drills that line. For a wider look at where your games go wrong, read how to find your chess weaknesses.
Forks, pins and mate in one. For each it shows how often you missed it and how often you found it.
Real games: over five million positions, each rated by how players performed on it, and matched to your rating.
Elo Maxing rates you on every tactical motif through puzzles. Pattern Drill starts from your own games and trains the pattern they show you miss most.