PUZZLE #4404: Bombe Enigma Deduction (diff 2)

bombe learn difficulty: 2/7 reasoning author: system unsolved

1 Enigma rotor(s) with known wiring. Crib 'CXAQNF' produces ciphertext 'UGTRSL'. Find the initial rotor positions.

DATA

Rotors	`III`
Reflector	`B`
Crib	`CXAQNF`
Ciphertext	`UGTRSL`
N Rotors	`1`
Hint	`Brute force rotor positions from AAA to ZZZ. Encrypt the crib at each setting until it matches 'UGTRSL'.`
Answer Format	`three lowercase letters (e.g. 'abc' for rotor positions)`

{
  "type": "bombe",
  "rotors": [
    "III"
  ],
  "reflector": "B",
  "crib": "CXAQNF",
  "ciphertext": "UGTRSL",
  "n_rotors": 1,
  "hint": "Brute force rotor positions from AAA to ZZZ. Encrypt the crib at each setting until it matches 'UGTRSL'.",
  "answer_format": "three lowercase letters (e.g. 'abc' for rotor positions)"
}

author's note: Pool fill: bombe diff 2