Which number must be inserted in place of the incorrect number? Show puzzle solution The number 75 must be replaced by the ...

Are you ready to prove your mental sharpness and IQ power in just 5 seconds? Only those with razor-sharp focus and heightened observation will spot the odd number in time.

Puzzle games come in a range of styles, from mindless relaxation machines to hardcore logical quagmires, and we have a little ...

In Connections, each category has a different difficulty level. Yellow is the simplest, and purple is the most difficult.

September/1992024/Picture-Puzzle-Triangle.jpg" width="1200" height="675" /> Challenge your brain with this engaging picture ...

FT.com will bring you the crossword from Monday to Saturday as well as the Weekend FT Polymath.

NPR's Ayesha Rascoe plays the puzzle with WLRN listener Ann Kritzer of Coral Springs, Fla., and Puzzlemaster Will Shortz.

The article features an optical illusion challenge that tests math skills by requiring readers to spot an odd number among ...