Rubik's 6064003 Tree, New Festive Cube and Problem Solving Puzzle, Christmas Decoration Ball

Rubik’s Cube Gridlock Game, The Problem-Solving Puzzle Game Inspired by the Classic Brain Teaser Fidget Toy, for Adults & Kids Aged 7+

Rubik’s Impossible, The Original 3x3 Cube Advanced Difficulty Classic Colour-Matching Problem-Solving Puzzle Game Toy, for Adults and Kids Aged 7 and up

Puzzles, Paradoxes, and Problem Solving: An Introduction to Mathematical Thinking

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Planet Earth Puzzles : Activities for Boosting Problem-Solving Skills!

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Sudoku Magic: Transform Your Problem-Solving Skills with Fun Puzzles

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Rubik’s Cube, The Original 3x3 Colour-Matching Puzzle, Classic Problem-Solving Cube

Excel-VBA: From Solving Mathematical Puzzles to Analysing Complex Engineering Problems

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Problems For Metagrobologists: A Collection Of Puzzles With Real Mathematical, Logical Or Scientific Content: 3 (Problem Solving in Mathematics and Beyond)

Professor Puzzle Aristotle’s Number Brain Teaser Puzzle - 3D Wooden Puzzles / Brain Teaser Toy to develop problem solving skills.

Rubik’s Cube, The Original 3x3 Colour-Matching Puzzle, Classic Problem-Solving