ProNardy

About the project

ProNardy is long backgammon done properly — the game you play with your father, a friend, or an opponent two time zones away.

Why it exists

Long backgammon is the game of dinner tables, courtyards and train compartments from the Balkans to Central Asia — and yet online it is almost always substituted with short backgammon, wrapped in ads and in-app purchases. ProNardy does it differently: the exact rules of the long game, free and without advertising.

ProNardy also wants you to play stronger. Every game can be reviewed move by move, the way chess engines do it, and the Academy collects your recurring mistakes and lets you replay them in a trainer. No such review exists for long backgammon anywhere else.

It is built in Ukraine, and the Ukrainian version of the site lives at pronardy.com — the interface switches between Ukrainian and English wherever you play.

Your games are yours

Game history is stored primarily on your own device and works without internet. An account enables syncing between devices — but it is only needed for the online features, not for playing as such.

Who builds it

ProNardy is built by Oleksii Turovskyi, a full-stack developer. The game engine, the position evaluation, the two-ply move search and the Academy mistake detectors are the same codebase and the same author — so the rules and tactics here are not a retelling of someone else’s guide, they are written from the implementation side. If the text ever disagrees with how the app plays, the text is wrong.

Personal site — alexturik.com, developer profile — GitHub.

Frequently asked questions

Is ProNardy free?

Yes. The game is free and shows no ads — no payments, no banners.

Do I need to sign up?

Not for playing the computer, two players on one device, nearby play without internet, or joining a room by invitation. An account (Google or email) is needed to create online rooms, send scheduled challenges, run tournaments, play against your own agent via MCP, and see your statistics across different devices.

Are the dice fair here?

Rolls come from a cryptographic random number generator (Web Crypto CSPRNG) with no statistical bias. You can check the distribution of rolls in your own games on the statistics screen.

How do I play without internet?

Install ProNardy on your phone (the browser will offer “Add to Home Screen”) — after that, games against the computer and two-player games on one device work fully offline. And two phones side by side can play each other through Nearby play: a direct connection over Wi-Fi or a hotspot, with no server involved.

How do I invite a friend to a game?

Create an online room and send the link in any messenger. Your friend opens it and lands straight in the game — no signup needed on their side.

How do I connect via MCP?

MCP (Model Context Protocol) is an open protocol that lets an assistant such as ChatGPT, Claude or Grok connect to outside services. ProNardy works as an MCP server: your agent takes the seat opposite you, sees only this game and picks its move from the list of legal ones, so it cannot bring short-backgammon rules here. Setting it up takes a few minutes:

  1. Sign in to ProNardy (Google or email): playing with an agent is tied to your account.
  2. On the home screen open “Your agent” and press “Create a game”. You get a game code, valid for 15 minutes, and the MCP server address — https://ws.wpwoonext.com/mcp.
  3. Add the server to your assistant. ChatGPT: Settings → Connectors → turn on developer mode → “Create”, paste the address, no authentication needed. Claude.ai: Settings → Connectors → “Add custom connector”, paste the address and enable the connector in the chat. Claude Code: run claude mcp add --transport http pronardy https://ws.wpwoonext.com/mcp in a terminal. Grok: in the connector settings add a remote MCP server with this address.
  4. Tell your agent in the chat: “Here is a ProNardy game code: <code>. Join and play long backgammon with me.” Once it connects, its name appears on the screen.
  5. Play. After your move, tell the agent “your move”. In Claude Code you can ask it to “play until the game ends” — then it waits for its turn by itself. ProNardy rolls the dice, and the agent cannot see them in advance.
Can an agent review my game?

Yes. In your profile, in the game history, press “Review with agent” next to a finished game — ProNardy gives you a code valid for 1 hour. Give it to your agent: it gets the engine evaluation of every move and walks you through the key moments. The code only reads the game and cannot change anything. Games with an agent stay in your history but do not count towards your statistics or achievements.

How is long backgammon different from short backgammon?

Long backgammon has no hitting: you cannot knock an opponent’s checker off or send it to the bar. Both players travel a single ring in the same direction, so the game is a race with positional blocking rather than an exchange of blows. It is the variant known as nardy, played across Eastern Europe, the Caucasus and Central Asia.

What are Mars and Koks?

They are the price of a win. If the opponent bore off at least one checker it is an Oin, 1 point. Bore off none — Mars, 2 points. Bore off none and still stuck in the starting quarter — Koks, 3 points. Bore off none despite getting all 15 checkers home — Home Mars, 4 points. The names are transliterated from the game’s own tradition, because two of them mean something different from the short game’s scale.

How do I install the game on my phone?

ProNardy is a web app (PWA): open pronardy.com in your phone’s browser and choose “Add to Home Screen” (Android offers this by itself; on iPhone it is in the Share menu). You get an icon, the game launches like a normal app, and it works offline.

More about the game in the complete rules and the feature overview.

Feedback

Something broken, or an idea? There is a “Contact us” button in the app — every message is read by the person who makes this game.

A game takes ten minutes

Play now