1068 real-game puzzles in this collection
What is a discovered check?
A discovered check unmasks a check from a rear piece while the front piece moves anywhere it likes. Because the king must answer the check, the moving piece can often capture or threaten with total impunity.
How to spot it
Whenever a piece of yours stands between your rook, bishop or queen and the enemy king, every square that piece can reach is a candidate for a devastating free move.
What this set trains
Solving these builds the reflex to hunt for masked batteries aimed at the king — one of the most forcing weapons in chess.
Foundation: 138Developing: 217Challenging: 209Advanced: 504
challenging
Rating 1961
attractioncrushingdiscoveredAttack
challenging
Rating 1962
attractioncrushingdiscoveredCheck
challenging
Rating 1964
advantagecastlingdiscoveredAttack
challenging
Rating 1964
crushingdiscoveredAttackdiscoveredCheck
challenging
Rating 1964
discoveredAttackdiscoveredCheckendgame
challenging
Rating 1965
crushingdiscoveredAttackdiscoveredCheck
challenging
Rating 1967
advancedPawnattractioncrushing
challenging
Rating 1969
crushingdiscoveredAttackdiscoveredCheck
challenging
Rating 1969
advantagediscoveredAttackdiscoveredCheck
challenging
Rating 1969
advantagedeflectiondiscoveredAttack
challenging
Rating 1970
advancedPawncrushingdeflection
challenging
Rating 1972
crushingdiscoveredAttackdiscoveredCheck
challenging
Rating 1972
advancedPawnadvantagediscoveredCheck
challenging
Rating 1972
advantagediscoveredCheckdoubleCheck
challenging
Rating 1973
crushingdiscoveredAttackdiscoveredCheck
challenging
Rating 1973
advantagediscoveredAttackdiscoveredCheck
challenging
Rating 1974
discoveredCheckdoubleCheckkingsideAttack
challenging
Rating 1975
advantagediscoveredCheckdoubleCheck
challenging
Rating 1975
advantagediscoveredAttackdiscoveredCheck
challenging
Rating 1975
crushingdiscoveredAttackdiscoveredCheck
challenging
Rating 1975
advantagediscoveredAttackdiscoveredCheck
challenging
Rating 1978
attractiondiscoveredCheckdoubleCheck
challenging
Rating 1979
discoveredAttackdiscoveredCheckequality
challenging
Rating 1979
crushingdiscoveredAttackdiscoveredCheck
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