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Per Red Blob Games, for an 8-direction grid (with diagonals at √2 cost), the recommended heuristic is which?
ABFS layer count
BHamming distance
COctile distance
DManhattan distance only
Answer & Solution
Correct answer: C. Octile distance
Red Blob Games Heuristics: octile heuristic accounts for diagonal moves with √2 cost. Manhattan would overestimate; Euclidean underestimates.
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