303 real-game puzzles in this collection
What is a double check?
A double check delivers check from two pieces at once — the moving piece and the unmasked piece behind it. Blocking or capturing cannot answer both, so the king must move, which makes double checks the engine of many forced mates.
How to spot it
Double checks grow out of discovered-check batteries where the moving piece also gives check. If the king has few flight squares, look for a mating net one move later.
What this set trains
These puzzles teach the most forcing move class in the game and how to convert king exposure into concrete mate lines.
Foundation: 38Developing: 70Challenging: 73Advanced: 122
advanced
Rating 2154
crushingdiscoveredCheckdoubleCheck
advanced
Rating 2166
advantagediscoveredCheckdoubleCheck
advanced
Rating 2169
attractiondiscoveredCheckdoubleCheck
advanced
Rating 2170
doubleCheckforklong
advanced
Rating 2171
discoveredCheckdoubleCheckkingsideAttack
advanced
Rating 2182
attractioncrushingdiscoveredCheck
advanced
Rating 2186
clearancediscoveredCheckdoubleCheck
advanced
Rating 2192
attractioncrushingdiscoveredCheck
advanced
Rating 2196
advantagedoubleCheckendgame
advanced
Rating 2206
crushingdiscoveredCheckdoubleCheck
advanced
Rating 2207
discoveredCheckdoubleCheckexposedKing
advanced
Rating 2208
attractiondoubleCheckkingsideAttack
advanced
Rating 2211
attractiondiscoveredCheckdoubleCheck
advanced
Rating 2224
discoveredCheckdoubleCheckendgame
advanced
Rating 2234
discoveredCheckdoubleCheckmate
advanced
Rating 2234
advancedPawncrushingdiscoveredCheck
advanced
Rating 2236
advantagediscoveredCheckdoubleCheck
advanced
Rating 2238
discoveredCheckdoubleCheckmate
advanced
Rating 2244
advancedPawnattractioncrushing
advanced
Rating 2252
discoveredCheckdoubleChecklong
advanced
Rating 2252
crushingdiscoveredCheckdoubleCheck
advanced
Rating 2253
advancedPawndiscoveredCheckdoubleCheck
advanced
Rating 2256
discoveredCheckdoubleCheckmate
advanced
Rating 2265
attractiondiscoveredAttackdiscoveredCheck
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