Game guide · XJBILLIARDS
Gin Score Calculator: how a round works
Take a moment to read the table. Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Return to the explanation when a decision is unclear. Begin with the objective. Enter the knocker’s deadwood from 0 to 10. Zero means Gin. Use another round to revisit a decision.
Fixed house bonuses of 25. It does not include line bonuses or a match-end bonus.
Practice beyond the first move
Use the rule sheet as a reference. Enter the defender’s deadwood after any legal layoffs; against Gin no layoff is allowed. Use another round to revisit a decision.
What the game asks you to do
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Return to the explanation when a decision is unclear. Begin with the objective.
Start here and follow along
- Enter the knocker’s deadwood from 0 to 10. Zero means Gin.
- Enter the defender’s deadwood after any legal layoffs; against Gin no layoff is allowed.
- Calculate the result. Gin scores 25 plus defender deadwood; an undercut scores 25 plus the difference.
- For an ordinary successful knock, the knocker scores only the positive difference.
Getting comfortable with the controls
Use the two numeric fields, then Calculate score. This tool uses whole numbers. Return to the explanation when a decision is unclear. Keep the active rule in mind.
An example to follow
A knock of 8 against 5 is an undercut: the defender receives 28. Gin against 18 earns the knocker 43. The same rule applies on a phone and on a computer.
Keep this in mind
Look at the complete hand before deciding. Enter post-layoff values. This arithmetic tool does not choose card groupings from card images. The same rule applies on a phone and on a computer.
Questions about this game
What is the aim?
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Use the rule sheet as a reference. Take the next action only when the current step is clear.
How do I use the controls?
Use the two numeric fields, then Calculate score. This tool uses whole numbers. For a calm first round, focus on one decision. Take the next action only when the current step is clear.
Which format is available?
Fixed house bonuses of 25. It does not include line bonuses or a match-end bonus. For a calm first round, focus on one decision. Return to the explanation when a decision is unclear.
What should I check before a move?
Enter post-layoff values. This arithmetic tool does not choose card groupings from card images. Before making a move, check the cards in view. Return to the explanation when a decision is unclear.
Can you give an example?
A knock of 8 against 5 is an undercut: the defender receives 28. Gin against 18 earns the knocker 43. For a calm first round, focus on one decision. Take the next action only when the current step is clear.
How is a tie scored?
A non-Gin deadwood tie is an undercut, so the defender receives 25 points. Work at your own pace. Take the next action only when the current step is clear.
Can I use other Gin bonus values?
This calculator uses the same 25/25 values as this site’s Gin table. Begin with the objective. The same rule applies on a phone and on a computer.
Does it automatically lay off cards?
No. Enter the defender’s final value after layoffs. The playable Gin table performs card-based layoff analysis. Look at the complete hand before deciding. Use another round to revisit a decision.
Do I need an account or an app?
No. Open the page in a JavaScript-enabled browser. No player account or APK is needed. Treat this as a chance to practise one rule. Take the next action only when the current step is clear.
Are these scores cash or prizes?
No. Points are used only for free play and practice. There are no deposits, cash stakes or withdrawals. A clear plan starts with the current position. Return to the explanation when a decision is unclear.
