Teletext-Tools 823 — Mastermind Codebreaker

CODEBREAKER

LEN4

TURN 1 / 10

BEST —

READY — BUILD A 4-COLOUR GUESS

SETUP

P823

Difficulty

Turns

Tap colours to fill slots. BACK removes last.

HOW TO PLAY

P823/2

Goal: Crack the hidden 4-colour code.

Make a guess: Tap colours to fill 4 slots.

Feedback pegs: White = right colour, wrong place.

Feedback pegs: Black = right colour, right place.

Order matters: Pegs don’t tell which slot.

Tip: Start with 2 pairs to map colours.

FAQ + SEO

P823/3

Updated: 2026-02-22

Duplicates? Classic allows repeats. Easy disables repeats.

Best strategy? Reduce possibilities fast, then confirm.

Keywords: mastermind online • codebreaker game • mastermind puzzle • logic game • crack the code