Chapter 1
The art of river crossings and grids
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Chapter 2
Ancient riddles and philosophical paradoxes
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Chapter 3
Lateral thinking and creative loopholes
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Chapter 4
Game theory and probability traps
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YOUR GOAL
Master of Famous logic puzzles
Ch 1 · The art of river crossings and grids
schopenhauer River Crossing Puzzles
Across the river, across the river, We map a path across the river.
schopenhauer These puzzles feature characters who either always tell the truth or always lie, testing pure Boolean logic.
schopenhauer Often called the Zebra Puzzle, this complex elimination grid challenges solvers to map out highly specific relationships.
BETA
schopenhauer Decode pixel grids to master the clever logic behind history's greatest conundrums.
Fun Fact
River crossing origins: The oldest known river-crossing puzzle appeared in Latin around 800 AD, written by Alcuin of York to entertain Emperor Charlemagne.
Glossary
logic puzzle (noun)
A puzzle that requires the solver to use deductive reasoning to find the correct solution. Alcuin of York recorded the earliest known logic puzzles, featuring river crossings, in the eighth century.
A puzzle that requires the solver to use deductive reasoning to find the correct solution. Alcuin of York recorded the earliest known logic puzzles, featuring river crossings, in the eighth century.
Quiz
In what country was the grid-based logic puzzle 'Sudoku' given its famous name in 1984?
Quiz
In the classic wolf, goat, and cabbage puzzle, which item can be safely left alone with the wolf?
Quiz
Which English scholar wrote the earliest recorded river-crossing puzzles in 800 AD?
Quiz
What is the alternative name for the famous logic puzzle often falsely attributed to Albert Einstein?
Quiz
Mathematician Raymond Smullyan popularized puzzles featuring 'knights' and 'knaves.' What defines a knave?
Quiz
What type of puzzle uses number clues along a grid's edges to reveal a hidden pixel-art picture?
Quiz
Which Swiss mathematician developed 'Latin squares,' the structural precursor to modern Sudoku?