Recreational

Numerical Brain Teasers: Exercise Your Mind Author(s): Erica Sadun (Author) Publisher: Pragmatic Bookshelf Publication D...

赞(0)girro2018-05-10

The Ultimate Book of Puzzles, Mathematical Diversions, and Brainteasers: A Definitive Collection of the Best Puzzles Eve...

赞(0)girro2017-07-26

Rubik's Cube Compendium Author(s): Tamas Rubik (Author), etc. (Author), et al (Author) Publisher: Oxford University...

赞(0)girro2017-03-26