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.)

Show answer

If you enjoyed this puzzle, check out Sunday Afternoon Maths LXV,
puzzles about chocolate, or a random puzzle.


Show me a random puzzle
 Most recent collections 

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

List of all puzzles


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


Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2020