Masyu is a seriously challenging Japanese logic puzzle which will put experienced puzzlers and would be puzzlers to the ultimate test. Unlike many puzzles Masyu has no numbers or letters. It is played on a grid of squares, some of which contain white or black circles. The objective is to draw a continuous loop that passes through each of the circles. Sounds easy? It's not - the loop must be a continuous path that follows a host of strict rules making your task perplexing! Challenging yet extremely addictive, this is the type of puzzle you just can't put down.