This page contains: algebra, assembling, lateral thinking, pictures and word puzzles.


A popular kind of puzzles are cryptarithms (mathematical equations where the digits are replaced by symbols or letters).

Example 1:

Example 2:

  VIOLET           (4 solutions!)


This includes jigsaw puzzles, tangrams, the famous Rubik's cube and other objects.

I have a page with images of my collection of Rubik's puzzles.

See also my small collection of wooden puzzles.

Lateral thinking

Also known as situation puzzles or quistels (in the Netherlands), this kind of puzzles became popular because people liked to invent and participate in detective novels à la Hercule Poirot or Sherlock Holmes.

Here are some examples from the canonical collection:

These problems are played in a group. One player only knows the solution and presents the problem. The others must solve it, by only asking questions that can be answered with "yes" or "no" (or sometimes "irrelevant").

Picture-puzzles and word games

If you understand this one, you can solve these too:


Created: 1996-12-13 , last update: 2000-01-22.

Mail: Patrick Hahn (phahn@vo.lu) ; Homepage http://www2.vo.lu/homepages/phahn/default.htm