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Quick Summary
Find the shortest path from the top-left to the bottom-right corner of a grid.
Cells with values 1-9 are walkable while 0s act as obstacles.
Movement is permitted in all eight adjacent directions including diagonals.
What This Tests
Unweighted shortest path finding on a grid
Breadth-First Search implementation and queue management
Parent pointer tracking for path reconstruction
Boundary validation and visited state handling
Common Patterns
BFS
Graph Traversal
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