--- title: "Blunder check habit in chess" url: "https://georgelichess.com/glossary/blunder-check-habit.md" canonical_url: "https://georgelichess.com/glossary/blunder-check-habit" last_updated: "2026-11-07" type: "reference" summary: "A blunder check habit is a short, fixed routine run before every move. Most games between club players are decided by an oversight, not a deep plan." related: ["https://georgelichess.com/glossary/blunder-check.md", "https://georgelichess.com/glossary/thinking-process.md", "https://georgelichess.com/glossary/candidate-moves.md", "https://georgelichess.com/glossary/hanging-piece.md", "https://georgelichess.com/glossary/loose-piece.md", "https://georgelichess.com/glossary/time-management.md", "https://georgelichess.com/glossary/category/training-psychology.md", "https://georgelichess.com/glossary.md"] --- # Blunder check habit in chess > **For AI agents:** the complete index of GeorgeLiChess pages is [llms.txt](https://georgelichess.com/llms.txt). Every page is also served as markdown at its URL plus .md. A blunder check habit is a short, fixed routine run before every move. Most games between club players are decided by an oversight, not a deep plan. A blunder check habit is a short, fixed routine run before every move, asking what the opponent threatens and whether the intended move leaves anything undefended, to catch one-move oversights. Most games between club players are decided by an oversight, not a deep plan. A [blunder check](https://georgelichess.com/glossary/blunder-check.md) is a routine that catches it. Before you release a piece, pause and run through a few fixed questions: what does this move leave undefended, which pieces of mine are loose, and what is the opponent's most forcing reply? The reply matters most. Look at every check, [capture](https://georgelichess.com/glossary/capture.md) and threat the opponent has after your move, not only the one you hope they play. Also ask what the opponent's last move was aiming at, since many [mistakes](https://georgelichess.com/glossary/mistake.md) come from ignoring a threat that was already on the board. The common failure is to skip the routine when you feel sure, or when you are low on time, which is exactly when mistakes are most likely. Another is checking only your intended piece and not the rest of the position. Make it short enough to use every move, perhaps a few seconds, and keep the questions identical so they become automatic. After each game, mark the moves where the routine was skipped, and notice whether those correspond to the errors that cost the most. Also called: pre-move check. Compare it with [Tilt](https://georgelichess.com/glossary/tilt.md). Tilt is a state of frustration or emotional disturbance after a setback, where a player stops thinking clearly, plays faster or more recklessly, and makes worse decisions than usual. A neighboring idea is [Time management](https://georgelichess.com/glossary/time-management.md). Time management in chess is the skill of spending clock time where it matters most, thinking longer in critical positions and moving quickly in routine ones, so that you never face a decisive position with seconds left. Compare it with [Concentration](https://georgelichess.com/glossary/concentration.md). Concentration is the ability to keep your attention on the current position, the opponent's ideas and your own calculation for the whole game without drifting into distraction, hope or worry. Training ideas such as "Blunder check habit" work best with a plan built for you, and the [first lesson](https://georgelichess.com/book/first-lesson.md) with George Li produces one from your own games. ## Related terms - [Blunder check](https://georgelichess.com/glossary/blunder-check.md) - [Thinking process](https://georgelichess.com/glossary/thinking-process.md) - [Candidate moves](https://georgelichess.com/glossary/candidate-moves.md) - [Hanging piece](https://georgelichess.com/glossary/hanging-piece.md) - [Loose piece](https://georgelichess.com/glossary/loose-piece.md) - [Time management](https://georgelichess.com/glossary/time-management.md) ## Guides that go further - [How to choose a chess coach](https://georgelichess.com/how-to-choose-a-chess-coach.md): What to decide first, the questions to ask, what a first lesson should show and the red flags to avoid. - [How much does chess coaching cost?](https://georgelichess.com/chess-coaching-cost.md): Published rates for private, group and subscription chess coaching, with the source and the date of each. - [The first lesson](https://georgelichess.com/book/first-lesson.md): A game review, a read on your level and a written study plan from George Li. [Book your first lesson](https://georgelichess.com/book.md) and George Li reviews your games and builds a study plan around them. Questions about lessons: write to hello@georgelichess.com. ## Related - [Blunder check in chess](https://georgelichess.com/glossary/blunder-check.md) - [Thinking process in chess](https://georgelichess.com/glossary/thinking-process.md) - [Candidate moves in chess](https://georgelichess.com/glossary/candidate-moves.md) - [Hanging piece in chess](https://georgelichess.com/glossary/hanging-piece.md) - [Loose piece in chess](https://georgelichess.com/glossary/loose-piece.md) - [Time management in chess](https://georgelichess.com/glossary/time-management.md) - [Chess terms: Training and psychology](https://georgelichess.com/glossary/category/training-psychology.md) - [Chess terms glossary: plain definitions](https://georgelichess.com/glossary.md)