Brain Puzzles · Logic

Classic Brainteasers

Bridges at night, water jugs, river crossings and fake coins. Print a fresh sheet with its answer key, or try one on screen.

🖨 Print a sheet▶ Try one on screen

How to play

  1. Read the rules twice. The puzzle is in the rules.
  2. Draw a picture or make a small table to keep track of who or what is where.
  3. When you find a plan that works, ask whether a shorter one exists.

What it exercises

Planning ahead and testing a plan step by step. These old puzzles reward trying a few ideas on paper before settling on one.

Levels

  • Easy Three people on the bridge, small jugs, fewer coins.
  • Medium Four people on the bridge, longer jug puzzles.
  • Hard Five people, the longest jug puzzles, up to 81 coins.

🖨 Print a sheet

▶ Try one on screen

More logic puzzles

SudokuEach row, column and box holds every number once. Cage SquaresA number grid with sums and products in outlined cages. Logic GridsUse the clues to match each child to their things. Picture LogicNumber clues tell you which squares to fill. A picture or a pattern appears. Letter ArithmeticAn addition sum in letters. Which digit is each letter? All Brain PuzzlesEvery kind, and the mixed sampler.
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