Zordle

Zordle is a privacy-focused word-guessing game that uses zero-knowledge proofs to ensure that the words guessed by a player remain hidden from the verifier. The game is similar to the popular word-guessing game Wordle, but it includes an extra degree of protection.

To play Zordle, a player and a verifier must first agree on a shared grid of letters. The player then attempts to identify a word that can be made from some of the letters in the grid and uses a zero-knowledge proof to demonstrate to the verifier that they know a word that can be constructed from those letters without exposing the word itself.

Zordle bases its zero-knowledge proof on the Halo 2 ZK proof system, a recent advancement in zero-knowledge proofs that aims to be efficient and scalable. Zordle uses Halo 2 to provide strong privacy guarantees without sacrificing performance.

Zordle is free web software that works with any modern web browser. It was created by a team of researchers at the University of California, Berkeley, and is meant to serve as both a tool for teaching and understanding zero-knowledge proofs as well as a fun and engaging game.

Features:

• Zordle employs zero-knowledge proofs to maintain the confidentiality of the player's predicted words, even from the verifier.
• Halo 2 ZK Proofs: The game is based on the efficient and scalable Halo 2 zero-knowledge proof technology.
• Multiple Difficulty Levels: The game has several difficulty levels ranging from simple to hard, allowing players to challenge themselves and improve their skills.
• Time Limits: Each round includes a time limit, bringing a sense of urgency and excitement to the gameplay.
• Hint System: Players can use hints to reveal one of the letters in the concealed word, allowing them to narrow down their choices.

Tips to win:

• Begin with the most common letters: English uses a few letters more frequently than others. Starting with these letters increases your chances of discovering the concealed word.
• Look for patterns. Try to find frequent letter combinations and patterns that could exist in the hidden word.
• Use the hint system wisely. If you get stuck, use the hint system to disclose one of the concealed letters. This can help you limit your options and improve your chances of guessing the word correctly.
• Practice, practice, practice: As with any game, the more you play Zordle, the better you get. Continue to practice and challenge yourself with higher difficulty levels to enhance your skills.

How to Play Zordle.

• The game starts with the player and verifier deciding on a shared grid of letters.
• The player then attempts to guess a word that some of the grid's letters can form.
• The player employs a zero-knowledge proof to demonstrate to the verifier that they understand a word that can be created from those letters without exposing the word itself.
• The verifier determines if the guess is right or not. If the guess is incorrect, the player can keep guessing until they either get the word right or run out of time.
• The game ends when the player successfully guesses the word or runs out of time.

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