Set 1
Set 2
Set 3
Set 4
Set 5
Set 6
Set 7
Set 8
Set 1
Four Pills
Pebble Piles
Rope Escape
Cake Cutting
Fox in a Hole
Cube Cutting
Ant Collisions
Ant in a Room
Coin Toss Guess
Set 2
Cube Problems
Truchet Tilings
Treasure Island
Six Colored Balls
Josephus Problem
Forty-Five Minutes
Thousand Prisoners
Non-Transitive Dice
Blind Man and Cards
Breaking a Chocolate Bar
Set 3
Two Dice = Nine Cards
Three Boxes and a Ruby
Absent-Minded Professor
Color of My Probabilistic Hat
Kirkman's Schoolgirl Problem
Three Boxes with Two Balls Each
Divide 100 Marbles into Two Piles
Three Heavy and Three Light Balls
Tossing with One-Third Probability
Coins in a Row
Set 4
Ants in a Circle
Fifteen Sum
Four Ships
Cap Colors
f(f(x)) = -x
Card Shuffling
Coconut Spelling
Average Salary
Forks in a Road
Bigger or Smaller
Set 5
Measuring Weights
Working Computer
Tiling With Calissons
Loop in a Linked List
Perplexing Polynomial
Poisoned Wine Barrels
Two Eggs and a Building
Number Guessing Game
Cutting a Cake with Icing
Number Guessing Game II
Set 6
Cube Cutting with Stacking
What's the Number on My Hat?
Tiling a Chessboard with Dominoes
Tiling a Chessboard with Trominoes
Fuel Dumps on a Circular Racetrack
Red Card
My Cap Color
Twelve Coins
Grid Infection
Duplicate Integer
Set 7
Find the Angle
Five Card Trick
Sum and Product
Fast Bit Counting
Empty the Bucket
Balanced Coloring
Horses on Auction
Polya's Urn Process
Flipping Bits in a Matrix
Rectangle with Integer Side
Set 8
100 Prisoners and 100 Boxes
100 Prisoners and a Light Bulb
Firing Squad Synchronization
Four Points, Two Distinct Distances
Tumblers on a Rotating Table
Geometry With Only a Compass
Dijkstra's Self-Stabilization Protocol
Three NOT Gates from Two NOT Gates
© Copyright 2008—2019, Gurmeet Manku.