# Puzzles

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#### Sunday Afternoon Maths LXVII

Coloured weightsNot Roman numerals

#### Advent calendar 2018

#### Sunday Afternoon Maths LXVI

Cryptic crossnumber #2#### Sunday Afternoon Maths LXV

Cryptic crossnumber #1Breaking Chocolate

Square and cube endings

List of all puzzles

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scales squares doubling cube numbers cards angles crossnumbers shapes logic ave integers speed square roots indices percentages probability sums rectangles calculus algebra graphs clocks floors volume hexagons factors digits means time taxicab geometry perfect numbers partitions balancing circles regular shapes christmas 2d shapes crosswords prime numbers ellipses number rugby sequences square numbers colouring sport complex numbers addition cryptic crossnumbers factorials books quadratics polygons routes dice remainders probabilty folding tube maps perimeter people maths menace money multiples grids sum to infinity chalkdust crossnumber trigonometry symmetry chess 3d shapes functions irreducible numbers chocolate mean averages games division shape differentiation pascal's triangle geometry arrows triangle numbers surds multiplication integration bases lines proportion area unit fractions wordplay coins fractions star numbers coordinates planes spheres odd numbers cryptic clues dodecagons advent triangles numbers dates palindromes parabolas## Breaking Chocolate

You are given a bar of chocolate made up of 15 small blocks arranged in a 3×5 grid.

You want to snap the chocolate bar into 15 individual pieces. What is the fewest number of snaps that you need to break the bar? (One snap consists of picking up one piece of chocolate and snapping it into two pieces.)

If you enjoyed this puzzle, check out Sunday Afternoon Maths LXV,

puzzles about chocolate, or a random puzzle.

puzzles about chocolate, or a random puzzle.