IQ Test Labs

Discover your intellectual strengths

practice questions

Puzzle games > logic puzzles

Logic puzzles

math puzzles
  • Sudoku: Solve the grid!
  • PIN cracker: Game similar to mastermind

More mind games, and brain teasers!

Sudoku

  • Each number can appear only once in each nine-square row, column or box.
  • Hints, notes, and puzzle solve.
  • Six levels of difficulty.
Begin

PIN cracker

  • Decode the PIN before time is up.
  • Correct digits and digit position reported after every move.
  • Game similar to Mastermind.®
Begin

widgets Latest post

Verbal > Analogies

Verbal reasoning - Analogy

new_releases Newsletter

Get new questions to hone your IQ!

Advice from the experts on how to maintain a healthy brain & preserve mental sharpness indefinitely.

whatshot In the news

Keeping the beat

drums beat

The coordination of actions and sounds has long baffled neuroscientists.

Good hearing or good body movement is not enough to keep a beat.

Attaining super-synchronization abilities through practice is still unclear.

McGill University

More

pie_chart Polls

Quotations