Atbash (mirror-alphabet) cipher: BLOCKED : YOLXPVW :: ? : OZFMXS

Introduction / Context:This analogy employs the classic Atbash (mirror-alphabet) cipher, where each letter maps to its mirror from the opposite end of the alphabet (A↔Z, B↔Y, C↔X, …). Recognizing Atbash is useful in many coding-decoding contexts.

Given Data / Assumptions:

• BLOCKED encodes to YOLXPVW under Atbash.
• We must find a word that encodes to OZFMXS under the same mapping.
• Atbash is its own inverse; applying it twice returns the original text.

Concept / Approach:To decode OZFMXS, apply Atbash to each letter: original = mirror of encoded. Then match the resulting plaintext to one of the options.

Step-by-Step Solution:

Verification / Alternative check:Because Atbash is an involution, encoding and decoding are identical operations. One forward pass suffices to verify both directions.

Why Other Options Are Wrong:

• DEBATE/RESULT/LABOR: Their Atbash encodings do not equal OZFMXS; each produces a different 6-letter string.

Common Pitfalls:Confusing Atbash with Caesar shifts or forgetting it maps A↔Z, B↔Y, etc. Always write the mirror pairs or remember the formula: position′ = 27 − position.

Final Answer:LAUNCH