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Grokking the Coding Interview Patterns in Python

Minimum Moves to Spread Stones Over Grid

Explore how to solve a 3x3 grid puzzle by moving stones to ensure each cell has exactly one stone. Learn to apply backtracking to calculate minimum moves, understand adjacency constraints, and implement an efficient solution.

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Statement

Given a 2D grid of integers of size (3×33 \times 3), where each value represents the number of ...