Which of the following is NOT a rule of tower of hanoi puzzle?
(a) No disk should be placed over a smaller disk
(b) Disk can only be moved if it is the uppermost disk of the stack
(c) No disk should be placed over a larger disk
(d) Only one disk can be moved at a time
This question was addressed to me in an international level competition.
My question is from Recursion topic in chapter Recursion of Data Structures & Algorithms II