Today's Daily Riddle
Thursday, May 14
Take any prime number greater than 3, square it, and subtract 1. Show that the result is always divisible by 24.
Solve Today's Riddle →Choose Your Challenge
From classic logic puzzles to brain-bending riddles
Logic & Reasoning
5 categoriesMath & Numbers
12 categoriesMath & Numbers
Number puzzles for curious minds
Cryptarithmetic
Letters stand for digits — solve the equation
Probability
Counterintuitive odds and chance puzzles
Magic Squares
Make rows, columns, and diagonals all sum the same
Geometry
Find the angle, the area, the trick
Age & Word Problems
Classic algebra and rate puzzles in plain English
Number Theory
Divisibility, primes, and digit tricks
Calendar Math
Days, dates, and the patterns of time
Sequences
What comes next in the pattern?
Balance Scale
Find the fake coin in minimum weighings
Water Jug
Measure exact amounts with limited jugs
Tower of Hanoi
Move the tower using minimum steps
Word & Language
3 categoriesVisual & Spatial
5 categoriesCommunity
1 categoryPopular Riddles
Start with our most loved puzzles
Interactive Puzzles
Hands-on challenges you actually play — not just read
River Crossing
Get the fox, chicken, and grain safely across — without anyone eating anyone.
Play now →Tower of Hanoi
Move a stack of discs to the other peg — no big disc on small, one at a time.
Play now →Water Jug
Measure exactly the right amount of water using only two jugs of different sizes.
Play now →Lateral Thinking
Ask yes/no questions to crack mysteries that seem impossible at first glance.
Play now →Knights & Knaves
Logic puzzles where knights always tell the truth and knaves always lie.
Play now →Balance Scale
Find the odd coin using as few weighings as possible.
Play now →