Puzzles quiz
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What colours stripe the shirt Wally wears in his puzzle books?
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More questions about Puzzles
These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.
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Which puzzle's Chinese name means 'seven boards of skill'?
Answer: Tangram
Why: Its seven pieces are five triangles of three sizes, one square and one parallelogram.
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Roughly how many positions can a Rubik's Cube reach?
Answer: 43 quintillion
Why: Even so, every one of those positions can be solved in 20 moves or fewer, a limit proven in 2010.
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Which share of randomly rebuilt Rubik's Cubes can still be solved?
Answer: 1 in 12
Why: No sequence of turns can flip one edge, twist one corner or swap just two pieces.
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In which grid do all rows, columns and diagonals add up the same?
Answer: Magic square
Why: China's legendary Lo Shu square arranges 1 to 9 so that every line adds up to 15.
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How often does switching doors win in the Monty Hall puzzle?
Answer: 2 in 3
Why: Your first pick wins 1 time in 3, and the host's reveal can't change that, leaving 2 in 3 for the other door.
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What is the fewest clues a sudoku with one solution can have?
Answer: 17
Why: Proving that no 16-clue sudoku has just one solution took about 7.1 million core hours of computer search.
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