Assembly

The Trefoil Knot
The Ultimate Puzzle
Think Square
Think Tac Toe
Think Through
Thinking Outside The Box
Thinking Putty Puzzle
Third Dimension I Puzzle
Three Cubes
Three Cubes (Tanner XL)
Three Little Piggies
Three Piece Block
TICToc
Tito's Brick
Tokai
Top
Tough Measures
Tourelle