Headddle Game Details
Cipher Duel
Read the pattern before your rival does.
Cipher Duel is a head-to-head codebreaking match: each player sets a secret code, then takes turns guessing the opponent code with positional feedback after every attempt.
Overview
Each round starts with both players locking a secret numeric code. In the current lobby flow, code length is 4 digits.
After both secrets are set, the round becomes turn-based: only the active side can submit a guess.
Every guess returns structured feedback per digit, so information accumulates move by move until one side solves first.
How To Play
- 1
Set your secret code, then wait until both players are ready.
- 2
On your turn, submit one full-length numeric guess.
- 3
Read the result: green means correct digit in correct position, yellow means correct digit in another position, gray means digit not matched.
- 4
Use marks and bulls/cows totals to eliminate impossible combinations and refine the next guess.
- 5
Turns alternate automatically after non-winning guesses.
How To Win
A round is won immediately when your guess matches the full secret code.
Implementation-wise, that means bulls equals code length for the submitted guess.
If your rival solves first, the round ends in their favor.
Competitive Aspect
The duel rewards precise deduction under turn pressure: each turn is both an offensive guess and a defensive information race.
Duplicate-digit handling is strict in scoring, so efficient inference matters more than random probing.