xdle

xdle swaps Wordle's letters for digits. The board has six rows of three boxes and a keypad of 0 to 9. You enter a three-digit number and press Enter, and a line of clues appears beside it. The first clue says whether the hidden number, called x, is higher or lower than your guess. The rest come from number theory: whether x is a multiple of your guess or a power of it, the largest divisor the two share, and facts about the numbers themselves such as being prime, a square or a cube, how many prime factors they have and their largest prime divisor. You work from those relations to pin down x.

There are two modes. Daily xdle is numbered, a new one each day, the same for everyone; the count starts on 23 May 2022, and number 1612 fell on 21 October 2026. The hidden number is anywhere from 2 to 999, picked by a random generator seeded with the day's number. Free xdle lets you play as much as you want with random puzzles. Stats track games played, win rate and streaks for each mode, and results can be copied for sharing, including a Discord format.

The game was made in 2022 by Guilherme S. Töws, who publishes as zaratustra on itch.io, inspired by Josh Wardle's Wordle. It is free, plays in the browser with no account and no ads, and offers colour-blind and black and white themes, a dark mode and a bigger keyboard. It suits players who enjoy primes and divisors more than letters.