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Given this simplified code snippet for check detection, what will be the output if the king is under threat?

medium📝 Analysis Q4 of 15
LLD - Design — Chess Game
Given this simplified code snippet for check detection, what will be the output if the king is under threat?
def is_in_check(board, king_pos):
    threats = find_threats(board, king_pos)
    return len(threats) > 0

print(is_in_check(board_state, (4, 0)))
AFalse
BError
CNone
DTrue
Step-by-Step Solution
Solution:
  1. Step 1: Understand function logic

    The function returns True if threats list length is greater than zero, meaning king is threatened.
  2. Step 2: Analyze output for king under threat

    If king is under threat, threats list is not empty, so function returns True.
  3. Final Answer:

    True -> Option D
  4. Quick Check:

    King threatened => is_in_check returns True [OK]
Quick Trick: Check detection returns True if threats exist [OK]
Common Mistakes:
  • Assuming function returns threat count
  • Confusing True/False logic
  • Ignoring function return statement

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