If in a certain language, MIRACLE is coded as NKUEHRL, then how is GAMBLE…

Concept: In a positional letter-shift cipher, each letter of the coded word moves forward in the alphabet by a number of steps equal to its position in the word (the 1st letter shifts by 1, the 2nd by 2, and so on) — the step size grows letter by letter rather than staying fixed.

Applying this to the given clue MIRACLE -> NKUEHRL confirms the rule:

1. M (1st letter) + 1 step = N

2. I (2nd letter) + 2 steps = K

3. R (3rd letter) + 3 steps = U

4. A (4th letter) + 4 steps = E

5. C (5th letter) + 5 steps = H

6. L (6th letter) + 6 steps = R

7. E (7th letter) + 7 steps = L

Apply the same rule, position by position, to GAMBLE:

1. G (1st letter) + 1 step = H

2. A (2nd letter) + 2 steps = C

3. M (3rd letter) + 3 steps = P

4. B (4th letter) + 4 steps = F

5. L (5th letter) + 5 steps = Q

6. E (6th letter) + 6 steps = K

Cross-check: reverse the code by shifting each letter of HCPFQK backward by the same position-based amount (H-1=G, C-2=A, P-3=M, F-4=B, Q-5=L, K-6=E), which reconstructs GAMBLE exactly — confirming the code.

So GAMBLE is coded as HCPFQK.