The Secret Chess Hangout Clubhouse

Welcome to The Secret Chess Hangout Clubhouse — a hidden retreat for true chess lovers! 

This is a private club where we share ideas, play internal matches, and grow as a community.

To join the club, you must solve this riddle and provide the correct 4-digit code in your join request:

❗ Secret code has been set. It’s a 4-digit number. Try to guess it based on these clues:

1. The number is even.  

2. All digits are different.  

3. The first digit is one more than the second digit.  

4. The third digit is 0.  

5. The number is between 3000 and 4000.  

6. The last digit is twice the second digit.

Think you’ve cracked it? Include your answer when you request to join. Good luck!