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
foundation
Rating 614
discoveredCheckdoubleCheckepauletteMate
foundation
Rating 668
discoveredCheckdoubleCheckepauletteMate
foundation
Rating 674
discoveredCheckdoubleCheckmate
foundation
Rating 700
discoveredCheckdoubleCheckmate
foundation
Rating 714
discoveredCheckdoubleCheckendgame
foundation
Rating 731
discoveredCheckdoubleCheckendgame
foundation
Rating 742
discoveredCheckdoubleCheckendgame
foundation
Rating 773
advantagediscoveredCheckdoubleCheck
foundation
Rating 784
doubleCheckmatemateIn1
foundation
Rating 803
discoveredCheckdoubleCheckendgame
foundation
Rating 856
doubleCheckmatemateIn1
foundation
Rating 860
discoveredCheckdoubleCheckmate
foundation
Rating 880
discoveredCheckdoubleCheckendgame
foundation
Rating 888
discoveredCheckdoubleCheckmate
foundation
Rating 922
discoveredCheckdoubleCheckmate
foundation
Rating 924
discoveredCheckdoubleCheckepauletteMate
foundation
Rating 938
discoveredCheckdoubleCheckendgame
foundation
Rating 945
discoveredCheckdoubleCheckmate
foundation
Rating 946
discoveredCheckdoubleCheckmate
foundation
Rating 951
crushingdiscoveredCheckdoubleCheck
foundation
Rating 990
discoveredCheckdoubleCheckepauletteMate
foundation
Rating 996
crushingdiscoveredCheckdoubleCheck
foundation
Rating 1009
doubleCheckmastermate
foundation
Rating 1061
doubleCheckepauletteMatemate
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