I.Q. Tests for the High Range

Three Minotaur heads as appearing on the Cooijmans family coat of arms.

Less serious tests, puzzles, and games

Some less serious tests, puzzles, and games

Mental Arithmetic #1 - Mental Arithmetic #2 - Mental Arithmetic #3 - Mental Arithmetic #4
sloBRAIN
Memory game
Vocabulary #1
Supernerd Crossword Test
Crosswords

Field of eternal integrity - A novel by Paul Cooijmans

What the Hanged Man sees - The Rider-Waite tarot unveiled