TrefoilA two layered cheese with three additional turns giving it the general shape of a Trefoil.
TriCrazyTwo circles each with two concentric turns of order 3, 3, 2 and 2.
TriFonFour circles, two of them concentric and turning in steps of 180°, the others turning in steps of 90°.
TriPieA puzzle with two circles and a plunger which can exchange pieces between the circles. The circles are split in segments of six with arrows on one side.
Triakis TetraminxTriakis Tetraminx is a shape variant of a megaminx into a triakis tetrahedron which is a catalan solid.
Triangle TowerThe mechanism of the Missing Link and the 1x2x3 combined into one puzzle.
Triaprism 3The triangular prism twisted by 40° around a corner
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