The Growing Triangle puzzle gives people two moves to make four triangles from these matches. ... To solve this problem you have to think in 3D instead of seeing them as flat shapes. 4.

The puzzle, which comes from a new book by London-based Alex Bellos, requires you to transform two triangles made from six matches into four triangles, by moving just two matches.

It looks like someone’s discovered an interesting resale use for destroyed antiques: 3D puzzles. Though almost certainly a fake (would that real Ming Vases break into such neat pieces), the ...

A series of mind-boggling puzzles have been sweeping the web - but the latest might be the toughest yet. The tricky test features three main images - two triangles and a hexagon.

A brain teaser challenged users to count all triangles in a complex puzzle. Wednesday, Jun 25, 2025. New Delhi o C. Subscribe. Sign in. My Account. Subscribe. Enjoy unlimited access. Subscribe Now!

Henry Dudeney, a self-taught English mathematician and puzzle columnist, asked his readers to dissect an equilateral triangle into the smallest number of pieces that could be rearranged into a square.