*We're pleased to welcome to the Decode blog the logic puzzles of Thomas Snyder, the champion puzzle solver known as "Dr. Sudoku." His first entry is a classic number-logic puzzle. Grab a pencil, ...

We are hardly ever consciously aware that we use logic to solve everyday problems. But what is logic? Is the logic used to prove theorems in mathematics the same kind that we use for our practical ...

The NYT Brain Tickler is a uniquely challenging and entertaining puzzle from The New York Times that forces your brain beyond just the ordinary logic game. Each Brain Tickler presents a new style of ...

The following puzzle devised by Lewis Carroll is a classic one in puzzledom: A bag contains one counter, known to be either white or black. A white counter is put in, the bag shaken, and a counter ...

Brainteasers are more than casual puzzles as they are structured in such a way that they serve as mental exercises. These puzzles can help stimulate reasoning, focus, and analytical thinking. There ...

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