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Puzzles and riddles

I have a certain interest in puzzles and riddles. For this reason, it is not strange that it is on of these reoccuring subject in my online diary.

Socks riddle

People standing in a circle

Filling the 70x70 square with 1x1 to 23x23

Squares on a grid

Goat problem

Usage Sort

Morse reordering puzzle

Squares inside squares and rectangles

Folding strips of paper

A wooden puzzle

Clickomania

(proven to be NP-complete for sufficient colors and size.)

Making a CD label

Optimization problem

Triangle tilings

Square tilings

Havannah

Nonograms

Rule 30

See also:

Exact Cover

LR-Maze

Chinese Wooden Puzzle

Racing horse game

L-tiles

Arabic Geometric Patterns

Latest PostScript file.

P versus NP problem

Infinite grid coverings

Symple

Extremely Loud & Incredibly Close

Jugo Flower

Diagonal mazes

Six of six colours on six by six squares

Four colour theorem

PARR

Takuzu

Street Tiling Patterns

Fractal Jigsaw

Irregular Chocolate Bar

Colour rubber straps


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