Guess Duel
A turn-taking number duel: hide your code and use each clue to narrow down the other one.
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- Players
- 2 (or 1 vs computer)
- Ages
- 8+ (3 digits for kids, 4 for a challenge)
About this game
Guess Duel is our Beta take on the familiar A/B number deduction game. A correct digit in the correct place earns an A; a correct digit elsewhere earns a B. You decide what to try next from those clues. Start with three digits for a gentler game, or use four when both players want more to keep track of.
How to play
- Pick 3 or 4 different digits as your secret.
- Take turns guessing. A = right digit, right place. B = right digit, wrong place.
- Play on one device, against the computer, or pass a link between two phones.
Questions parents ask
Can we play Guess Duel while waiting for food at a restaurant?
Yes, if you have time to take turns and keep each secret number hidden. You can stop guessing when the meal arrives. For a moving queue, wait until you can safely look at the phone.
What age can children start playing?
We suggest ages 8 and up. Use three different digits first and explain the A/B clues together. Reading the clues and keeping a secret may still need an adult's help.
Can two people play on one phone?
Yes. Take turns with the same device and let the other person look away when you enter a secret. A solo player can also choose the computer opponent. Link-based play between two phones is another option; room-code play is coming soon.
Is this a way to spend screen time together with my child?
You can talk about why a guess fits the clues and agree to stop after a duel. It is still a screen activity. There is no promise of educational results, and Beta means the game is still being refined.
Is it free to play?
Yes. These AppAI games are free to play in your browser.
Do I need to install an app or sign in?
No download or sign-in is needed for the play modes described on this page. Open the game in your browser on a phone, tablet or computer.