Bulls and CowsPlay with a friend
Pick a number and send your friend a link. They guess it by the usual rules and can then send you a number of their own.
1. Pick a number
Four different digits, zero can come first.
2. Send it to a friend
Once you pick a number, the code and a link for your friend will appear here.
Got a code from a friend?
How it works
You pick a number, and the game turns it into a four-character code. The number cannot be read from the code, so it is safe to send in a chat. Your friend opens the link and guesses by the usual rules. After the game they see a review of their moves and can challenge you back.