Cyclic tower of hanoi problem
59873
Proof of clockwise towers of Hanoi variant recursive solution
104176
$15x\equiv 20 \pmod{88}$ Euclid's algorithm
107110
Solving Rubik's cube and other permutation puzzles
63571
The Mississipi counting problem, this time in circle
84
For what $n$ is $U_n$ cyclic?
23451
The new introduced EulerMatrix problem
117020
Regular $n$-gon in the plane with vertices on integers?
132475
Simple method the show that a group of order 15 is cyclic
34334
Combinatorics Problem with symbols and spaces
35005
Difficult variation of the committee problem
107964
Simple combinatorics problem.
20659
Is trace invariant under cyclic permutation with rectangular matrices?
91485
Finding an uncountable chain of subsets the integers
52784
Hamiltonian Cycle Problem
153692
Generating and solving recurrence relations
68882
Path to Combinatorics Problem [$1.11$]
117178
Cyclic group generators