# 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

## Tags

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

Source: Alex Bellos's Monday puzzle

Fill in the following crossnumber grid so that each clue describes the solution.

For example, if some clues read "TEN DS", "ONE X" and "THREE ES" then there will be ten Ds, one X and three Es in the completed grid. The entries in the crossword include the spaces.