Click here to win prizes by solving the puzzle Advent calendar.
Click here to win prizes by solving the puzzle Advent calendar.


Advent calendar 2018

8 December

Arrange the digits 1-9 in a 3×3 square so: each digit the first row is the number of letters in the (English) name of the previous digit, each digit in the second row is one less than the previous digit, each digit in the third row is a multiple of the previous digit; the second column is an 3-digit even number, and the third column contains one even digit. The number in the first column is today's number.
each digit is the number of letters in the previous digit
each digit is one less than previous
each digit is multiple of previous
today's numbereven1 even digit
Edit: There was a mistake in this puzzle: the original had two solutions. If you entered the wrong solution, it will automatically change to the correct one.

Show answer

Tags: numbers, grids


Show me a random puzzle
 Most recent collections 

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

Sunday Afternoon Maths LXV

Cryptic crossnumber #1
Breaking Chocolate
Square and cube endings

List of all puzzles


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


Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2019