Coding (Algo)

Count Non Attacking Queen Placements

Algorithm: Backtracking Difficulty: Hard Time: 55 minutes

Goal

Count every valid full-board queen placement with no shared row, column or diagonal.

What this task practices

Count Non Attacking Queen Placements is a coding (algo) interview exercise that trains prompt interpretation, explicit assumptions, a concrete response, and a clear explanation of tradeoffs. The catalog marks it as hard difficulty. It focuses on Technical Reasoning, Testing, Validation. The signed-in workspace provides the tools for the round and evaluates the attempt against task-specific criteria. Reference solutions, hidden checks, evaluator instructions, and candidate work remain private.