The world's most diabolical take-apart puzzle</br>6 colorful interlocking puzzle pieces</br>Step-by-step solutions book</br>Easy-to-follow reassembly instructions</br>Learning skills: Pattern recognition?? abstract thinking and problem solving</br></br>Product Description</br></br>6920 Features: -Step by step solution book. -Ages: 8 to adult. -Players: 1. -General conformity certified. Gender: -Boy/Girl. Category: -Critical Thinking. Minimum Age Requirement: -8 Years And Up. Dimensions: Overall Height - Top to Bottom: -9.5 Inches. Overall Width - Side to Side: -6.25 Inches. Overall Depth - Front to Back: -3.75 Inches. Overall Product Weight: -0.43 Pounds.</br><br/>http://www.amazon.com/gp/product/B0033UWE2Q