You are a sensitive person, you calculate very fast? Let challenge with "Relax with math".How to play: - You have 2 seconds to make a decision : TRUE …
An ancient Greek Puzzle possibly over 2600 years old, now presented for this modern era.This presentation with four different levels of difficulty is …
Tired of Sudoku?Here is a refreshing and challenging alternative.Based on a simple precept of ten equations organised into four rows, four columns and …