Identifying the conditional enumeration pattern

Conditional enumeration is another foundational backtracking technique to solve problems where we need to find all the solution states. It is versatile and can model more complicated problems as it accounts for previously made choices when deciding the choices for any step. Most problems that can be solved using this technique are easy to medium problems, where we are given an initial problem state and can make multiple choices to reduce the problem space and transition to other states.

Most problems where we can make a set of choices that are dependent on previously made choices can be solved using the conditional enumeration technique.

If the problem statement or its solution follows the generic template below, it can be solved using conditional enumeration.