Nackgammon is one of the most popular and intellectually respected backgammon variants — a single rule change to the starting position that dramatically increases contact, hitting, and strategic complexity. Named after Nick “Nack” Ballard, three-time world backgammon champion, it is the most common variant played by serious backgammon enthusiasts who want a more fighting, complex game than standard backgammon offers.
Key Takeaways
- Nackgammon is identical to backgammon except for the starting position
- Each player starts with 2 checkers on the 23-point (opponent's 2-point) instead of the 24-point
- The change creates more early contact, more hitting, and more complex positional play
- Gammon rates are significantly higher than in standard backgammon
- Nackgammon rewards positional and fighting skills over pure racing strategy
- It is played regularly at serious clubs and on platforms like Backgammon Galaxy
What Is Nackgammon?
Nackgammon uses the same rules, board, and checkers as standard backgammon. The only difference is the starting position.
In standard backgammon, each player has 2 checkers on their 24-point (the deepest point in the opponent’s home board). In Nackgammon, these 2 checkers start 1 pip closer — on the 23-point (the opponent’s 2-point).
This single-point shift has cascading effects on the entire game.
Nackgammon Starting Position
Standard Backgammon Starting Position
| Point | Checkers |
|---|---|
| 24-point | 2 (your 2 back checkers) |
| 13-point | 5 |
| 8-point | 3 |
| 6-point | 5 |
Nackgammon Starting Position
| Point | Checkers |
|---|---|
| 23-point | 2 (moved from 24) |
| 13-point | 5 |
| 8-point | 3 |
| 6-point | 5 |
The 23-point is the opponent’s 2-point. Starting there instead of the 24-point means your back checkers are immediately deeper in the opponent’s home board, harder to escape, and more vulnerable to being closed in.
Why One Point Makes Such a Difference
In standard backgammon, the 2 back checkers on the 24-point can escape with a 6 — rolled frequently. They sit behind only the opponent’s 6-point, which is typically not immediately made in the opening.
In Nackgammon, the 2 checkers on the 23-point can only escape directly with a roll that combines 6+2 or higher (to clear the 18-point) — much harder. They sit behind both the opponent’s 6-point and 5-point (golden point), which are high-priority targets in the opening.
The result: your back checkers are trapped much more often and for much longer.
Statistical Differences vs Standard Backgammon
| Metric | Standard BG | Nackgammon |
|---|---|---|
| Average game length (moves) | ~55 | ~70 |
| Gammon rate | ~25% | ~35% |
| Backgammon rate | ~3% | ~5% |
| Positions reaching back game | ~5% | ~15% |
| Variance per game | Moderate | High |
How the Rules Differ
Nackgammon uses all standard backgammon rules with zero modification except the starting position:
- Same movement direction
- Same bearing-off rules
- Same bar and re-entry rules
- Same doubling cube rules (Jacoby, Crawford, etc. all apply as agreed)
- Same scoring (single, gammon, backgammon)
Strategic Differences
Opening Moves Change
Because the back checkers start on the 23-point (deeply anchored), the standard principle of “split the back checkers” is completely irrelevant — they’re already split into an even deeper position. Opening strategy focuses much more heavily on:
- Making the opponent’s 5-point — Even more critical, as closing it traps your own back checkers
- Building your own home board — With deep back checkers likely to be attacked, a strong home board is essential
- Slotting aggressively — Leaving builders for key points is often correct since you’re going to be in a fight regardless
Game Types Shift
| Game Type | Frequency in Standard BG | Frequency in Nackgammon |
|---|---|---|
| Running game | High | Lower |
| Holding game | Moderate | Higher |
| Priming game | Moderate | Higher |
| Blitz | Moderate | Moderate–High |
| Back game | Low | Significantly Higher |
Nackgammon is fundamentally a more positional, fighting game. Pure races end less often than in standard backgammon.
Cube Strategy
With higher gammon rates and longer games, cube decisions in Nackgammon are more complex than in standard backgammon:
- Initial doubles come later — positions stay more contested longer, so the doubling window arrives later in the game
- Gammon price is higher — the increased gammon rate means gammon threats are worth more and affect take/drop decisions more significantly
- Cube recube potential is higher — swings are larger, so the cube changes hands more often
Escaping the Back Checkers
With the back checkers on the 23-point, escaping requires:
- A 6+5 or better combination to clear the full home board in one roll
- Splitting even deeper is sometimes correct (moving one to 24 — a strange reversal from standard play)
- Timing is crucial — breaking out too early loses timing; waiting too long gets closed out
Who Plays Nackgammon?
Nackgammon is popular among:
- Club and tournament players who want more complex, fighting positions
- Experienced backgammon players bored with the running game frequency of standard backgammon
- Software analysis fans — XG and GNU both support Nackgammon positions
- Online communities — Backgammon Galaxy and FIBS both support Nackgammon matches
It is less popular with beginners because the deeper contact punishes strategic errors more severely and requires understanding of back game timing — a concept beginners often find difficult.
Nackgammon vs Other Variants
| Variant | Key Change | Contact Level |
|---|---|---|
| Standard Backgammon | Baseline | Moderate |
| Nackgammon | Back checkers on 23-point | High |
| Hypergammon | 3 checkers each, start on 24, 23, 22 | Very high |
| Longgammon | All checkers on 24-point | Extreme |
| Acey-Deucey | Complex variant rules | Very high |
How to Start Playing Nackgammon
If you already know backgammon, starting Nackgammon is simple:
- Set up a standard board
- Move your 2 back checkers from the 24-point to the 23-point (and your opponent does the same)
- Play standard backgammon rules from there
That’s the complete rule change. The strategic depth emerges from the position, not from rule complexity.
Frequently Asked Questions
Is Nackgammon harder than backgammon?
For beginners, yes — the increased contact and back game frequency are harder to navigate. For experienced players, it’s a more interesting strategic challenge rather than “harder” per se.
Can I play Nackgammon online?
Yes — Backgammon Galaxy supports Nackgammon and has an active player community for the variant. FIBS also supports it.
Is Nackgammon played in tournaments?
Occasionally as a side event at major tournaments. It does not typically replace standard backgammon in main events. Some clubs hold dedicated Nackgammon nights.
Who invented Nackgammon?
It is named after Nick “Nack” Ballard, three-time world backgammon champion, who popularised and refined the variant. He is also one of the leading analytical authorities on its theory.
Does the Jacoby Rule apply in Nackgammon?
It can — both Jacoby and Crawford rules can be applied in Nackgammon money games and match play respectively, exactly as in standard backgammon.
Further Reading
- Backgammon Variations — Overview of all major backgammon variants
- Backgammon Back Game — Critical in Nackgammon — understand it deeply
- Backgammon Holding Game — More common in Nackgammon than standard
- Famous Backgammon Players — Including Nack Ballard’s achievements
- Backgammon Strategy — Foundational strategy that applies to all variants