Backgammon Variants: Nackgammon, Hypergammon and Acey-Deucey

A clear guide to three popular backgammon variants — Nackgammon, Hypergammon and Acey-Deucey — how each starting position works and how strategy shifts.

Standard backgammon is one game with one starting position, but the board has room for many more. Three variants have earned lasting followings because each keeps the core rules — dice, points, hitting, the bar, bearing off — while changing only the opening setup or a single scoring twist. That small change reshapes the whole game: some make contact last longer and reward priming, others turn every roll into a knife-fight of hits and gammons. Here's how Nackgammon, Hypergammon and Acey-Deucey work, and how your strategy should bend to each.

TL;DR

• Nackgammon moves two back checkers to the 23-point, creating a longer, more strategic game with heavier emphasis on priming and holding games.
• Hypergammon gives each player only three checkers, all on the 24-point — a fast, tactical race where hitting and re-entry decide almost everything.
• Acey-Deucey is a livelier variant where rolling a 1-2 earns a bonus: you play the 1-2, then any double you choose, then roll again.
• All three use the same dice, hitting and bearing-off rules as standard backgammon — only the setup or a scoring bonus changes.

Nackgammon

Named after backgammon writer Nack Ballard, Nackgammon is standard backgammon with a slightly deeper back position. The starting setup is almost identical, but each player moves one checker from their 6-point stack and one from their 13-point stack back to the 23-point, so you begin with two checkers on the 24-point and two on the 23-point instead of two on the 24 and five on the 6.

That extra back checker changes the character of the game entirely. With more men stuck deep in enemy territory, early races are rarer and priming games, holding games, and back games become far more common. There's simply more contact, and it lasts longer, so the skills that decide standard backgammon — timing, building walls, and knowing when to run — matter even more. Players who enjoy the slow, positional side of backgammon tend to prefer Nackgammon precisely because it delays the pure race and keeps both armies entangled.

Hypergammon

Hypergammon strips the game down to its bones. Each player has just three checkers, and all three start on the 24-point, as far back as they can be. Everything else — the board, the dice, the bar, bearing off — is the same, but with only three men apiece the game is short, sharp and almost entirely tactical.

With so few checkers, you can rarely build lasting structures. Instead, the game turns on hitting and re-entry: a single hit sets your opponent back enormously when they only have three men to bring around, and being stuck on the bar against even a couple of made points is punishing. Races are decided by a handful of rolls, and the doubling cube swings wildly because one exchange of hits can flip the position. Hypergammon rewards fast, accurate tactical reading over long-term planning — it's the sprint to standard backgammon's middle-distance race.

Acey-Deucey

Acey-Deucey is the sociable variant, long popular in military and naval circles, and it comes in a few regional flavours. The common thread is a bonus for rolling a 1-2 (the "acey-deucey"). Most versions start with all checkers off the board, entered from the 24-point, and the signature rule is this: when you roll a 1-2, you first play the 1 and the 2 normally, then choose any double you like (say double-sixes) and play it, and then you get to roll again. A good acey-deucey at the right moment can rocket your checkers home.

Because that bonus roll can appear at any time, Acey-Deucey is swingier and more forgiving than standard play — a losing position can turn around on a single lucky 1-2. The core skills still apply, but the variance is higher and the mood is looser, which is exactly why it's a favourite for casual games. Note that specific rules — how checkers enter, whether an extra scoring bonus applies for closing out — vary by house, so it's worth confirming the exact ruleset before a match.

How variants change your strategy

The through-line across all three is that the fundamentals never change — dice still move one to six pips, hitting still sends a checker to the bar, and you still race to bear off first. What shifts is emphasis. Nackgammon rewards patience and priming because contact lasts longer. Hypergammon rewards sharp tactics because a single hit is decisive with only three checkers. Acey-Deucey rewards adaptability because the bonus roll injects sudden swings. Learn standard backgammon well and you already have every tool you need; the variants just ask you to reach for different ones. If you're still building those fundamentals, our guides to the priming game and the back game transfer directly, especially to Nackgammon.

Provably fair — verify

Whichever variant you play on 6proclub, every dice roll is committed before you see it. Ahead of the roll the server draws a secret serverSeed and shows you only its SHA-256 hash — a fingerprint it cannot change afterward. Your own clientSeed is mixed in, and a nonce counts up one per roll, so the full input is serverSeed : clientSeed : nonce. When the game ends the server reveals the original serverSeed; you hash it yourself, confirm it matches the fingerprint you were shown, then replay every roll from serverSeed : clientSeed : nonce to prove the dice were fixed before you acted. No one — not you, not the house — can bias a single number. See Provably-Fair Cash-Out Games for the full walkthrough, and the whole casino uses the same commit-reveal chain.

FAQ

What is Nackgammon?

Nackgammon is a backgammon variant that moves one checker from each player's 6-point and 13-point back to the 23-point, so you start with checkers on both the 24 and 23 points. The extra back checker makes for longer, more strategic games with more priming and holding play.

How is Hypergammon different from backgammon?

Hypergammon gives each player only three checkers, all starting on the 24-point, instead of the usual fifteen. With so few men, the game is short and tactical, decided mostly by hitting and re-entry rather than long-term structure.

What is the acey-deucey rule?

In Acey-Deucey, rolling a 1-2 is a bonus: you play the 1 and 2, then choose any double you wish and play that too, then roll again. It's a swingy, sociable variant where a well-timed 1-2 can transform your position.

Do variants use the same rules as standard backgammon?

Yes. All three use the same dice, hitting, bar re-entry and bearing-off rules. Only the starting setup (Nackgammon, Hypergammon) or a scoring bonus (Acey-Deucey) changes, so your standard backgammon skills carry straight over.

Are backgammon variants on 6proclub provably fair?

Yes. Every dice roll in any variant is committed as a SHA-256 hash before you see it and revealed afterward, so you can replay any game from its serverSeed : clientSeed : nonce and confirm no roll was altered.

18+. Crypto only. Backgammon involves risk — set a budget before you play, and treat strategy as a way to enjoy the game, not a guarantee of winning.