In chess, a blunder is a serious mistake that drastically worsens a player’s position — often losing material or allowing checkmate. Blunders usually arise from tactical oversights, time pressure, or neglecting to check the opponent’s forcing moves such as checks, captures, and threats. Even grandmasters have made them, proving that avoiding blunders is about developing stronger thinking habits rather than expecting perfection.
To reduce blunders, focus on preventative thinking and keeping your pieces protected. Always check if your moves leave anything undefended, anticipate your opponent’s ideas, and run through a consistent pre-move checklist. With practice, these habits make your play more reliable, confident, and accurate.
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