All pages
- 7 orbs
- Angels and demons
- Ants on a cube
- Ants on a log
- Around the world
- Bags of gems
- Ball drop
- Blank dice
- Blind unshuffle
- Cannibals and missionaries
- Celcius vs. Fahrenheit
- Cents per cents
- Checker board and dominoes
- Checkerboard and dominoes
- Checkerboard cut-up
- Chests of logic
- Chests of logic 3
- Chests of logic 4
- Coin game
- Commuter
- Condominium
- Consecutive hot dogs
- Cryptarithmetic
- Detective Merlin
- Dice stack
- Die Hard III
- Divisible by nine digits
- Domino circuit
- Double Russian roulette
- Earings
- Egg timers
- Eight options with six sides
- Eight queens
- Eight weights
- Failed exams
- Fair biased coin
- Farmer and the boat
- Fat travelers
- Fifteen
- Fill in the blanks
- Five card draw
- Five digits and one
- Five hats
- Five pirates
- Five towns
- Fly around the world
- Flying trains
- Forty thieves
- Four travelers
- Friends at a party
- Friends or non-friends
- Frog staircase
- Fruit boxes
- Fuses
- GO ON BOB
- Gem thief
- Girl, boy and dog
- Green eyed dragons
- Harry Potter and the hall of 100 doors
- High school play
- Hotel change
- Houses and utilities
- Jogging a hill
- Knight vs. dragon
- Lean meat
- Let's make another deal
- Liars and Truthtellers
- Light bulb
- Longest road
- Lying monkey
- Lying to the young
- Magic coin
- Marble madness
- Measuring Water
- Milk and coffee
- Monk's walk
- Monty Hall problem
- Multiple locks
- Next letter
- Next number
- Next sequence
- Nine minute fuse
- Nine prisoners
- Nine weights
- One-way roads
- Palindromic odometer
- Patriotic chameleons
- Penguin lineups
- Pizza split
- Poison
- Poppy party pizza
- Prisoners in red hats
- Probably blackjack
- Probably not transitive
- Prom problem
- Quarter cover
- Rabbit row
- Red vs black
- Round trip winds
- Sequence next in sequence
- Seven elevators
- Seven orbs
- Sharing water
- Six towns
- Six weights
- Soda machine
- Splitting ten
- Streaky dice
- Sum of product and sum
- Sum ratio
- Ten bags of gold
- Ten digit number
- Ten thieves
- The thief and the murderer
- The weird meeting riddle
- Three chests
- Three couples
- Three digit magic
- Three guesses
- Three logicians
- Three princesses
- Three prisoners
- Three sons
- Times of day
- Tommy's snack
- Too many trolls
- True or false
- Turn off a calculator
- Twelve weights
- Two EGGs
- Two guards
- Wagon collision
- Who does which?
- Wrong address
- Wrong clocks