Rubik’s Cube https://www.mathematische-basteleien.de/rubikscube.htm
Rubik’s Cube in my view
Probably you will have to repeat this sequence.
Dein Suchergebnis zum Thema: have
Polyiamonds http://www.mathematische-basteleien.de/iamonds.htm
About figures formed of equilateral triangles
You have more pieces than with pentiamonds and therefore more ways of playing.
Hypertetrahedron https://www.mathematische-basteleien.de/hypertetrahedron.htm
About the hypertetrahedron
All points must have the same distances from each other in „reality“.
Kolams and Sona http://www.mathematische-basteleien.de/kolams.htm
Kolams and Sona
– A closed line only results if m and n have no common divisor.
Snake Cube http://www.mathematische-basteleien.de/snakecube.htm
How to solve the Snake Cube
The reason is that you often have to go back to the last branch.
Burr Puzzle https://www.mathematische-basteleien.de/devilsknot.htm
How to solve several Burr puzzles
You have to fit them together, so that you have a „knot“.
Numeric Palindromes https://www.mathematische-basteleien.de/palindromes.html
My view on Numeric Palindromes
You have 9+9+90+90+900+900 = 1998 palindromes up to one million.
15puzzle https://www.mathematische-basteleien.de/15puzzle.htm
How to solve the 15puzzle
Sometimes you don’t have a 2×2 square for moving a piece (1).
Pentominos http://www.mathematische-basteleien.de/pentominos.htm
Playings with Pentominos
You must arrange the squares, so that they must have in common at least one side.
Taxicab Geometry https://www.mathematische-basteleien.de/taxicabgeometry.htm
My steps in taxicab geometry
Formula: AP+PB= |x2-x1| + |y2-y1| The points have only integer coordinates in the