Advent calendar 2017

5 December

You start at A and are allow to walk left, right, up or down along the grid. The grid continues forever in every direction. After you have walked thirteen units, how many different locations could you be in?


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


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


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