In a code, SILVER is written as UGNTGP. Which word is written as DPKBIC in the same code?

FNMZKACorrect answerYour answerBRIDGECorrect answerYour answerBNIZGACorrect answerYour answerCQJCHDCorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer B

Correct answer: B

S to U is +2, I to G is −2, L to N is +2, V to T is −2, E to G is +2, R to P is −2.
To decode, reverse each move: −2 on the 1st, 3rd and 5th letters, +2 on the 2nd, 4th and 6th.
D to B, P to R, K to I, B to D, I to G, C to E.
The word is BRIDGE.

Worth noting

FNMZKA applies the code again instead of undoing it. BNIZGA moves every letter back 2 and ignores the alternation.

Ten questions from Coding and Decoding, at your own pace.

Explanation