Contact us

Questions, bugs, and anything else. We read everything and reply by email.

Many answers are already in the FAQ. FAQ →

A person reads every message - usually the one who built the part you are writing about - and replies by email, in the order messages arrive. There is no ticket system and no automatic reply.

What we can help with

• Accounts and sign-in: recovering access, changing your display name or language, deleting an account.
• Games and ratings: a result that looks wrong, a clock problem, a disconnection, or reporting a player.
• Guides, lessons and puzzles: an error in a line, a diagram that disagrees with its text, or a translation that reads oddly.

Corrections to a guide or a master profile get priority. Tell us the page and quote the sentence; every language edition is fixed together, and the page shows its new revision date.