Love them or hate them: lateral thinking, cunning and flashes of inspiration needed for these little devils.
Beautiful puzzles in different woods that invite you to handle them - Tri-rhomboids, Hexiamonds and Pentominoes.
Classic Tangram pieces make thousands of designs.
Both tactile and attractive to look at, this quartet of increasingly difficult challenges have minimum numbers of moves to achieve their solutions.
Classics! Jump marbles to remove them, and see how far you can go.
From the small-scale Triangle to the full-scale cross and hardest French Solitaire.
All are simple to attempt and intriguing to solve - there's a Solitaire for everyone!
Swap the coloured marbles in as few moves as possible, using steps and jumps, or the classic chess Knights' move.
Dramatic, visual patterns to tackle and maybe master.
That extra dimension to challenge thinking.
The classic Soma Cube and Pentominoes come with a range of challenges to solve.
Or for something more unusual, try the Binary Blocks.
Not for the faint-hearted, these wooden sculptures may come apart easily, but will they go back together as simply?