Game guide · GSAZJC
Find your footing in Gin Score Calculator
Use the rule sheet as a reference. Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Use another round to revisit a decision. Use the rule sheet as a reference. Enter the knocker’s deadwood from 0 to 10. Zero means Gin. The same rule applies on a phone and on a computer.
Fixed house bonuses of 25. It does not include line bonuses or a match-end bonus.
An idea for your next attempt
Treat this as a chance to practise one rule. Enter the defender’s deadwood after any legal layoffs; against Gin no layoff is allowed. Check the relevant controls before continuing.
Your goal
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Use another round to revisit a decision. Look at the complete hand before deciding.
Work through the instructions
- 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.
How to use the controls
Use the two numeric fields, then Calculate score. This tool uses whole numbers. Take the next action only when the current step is clear. Take a moment to read the table.
Learn from a sample situation
A knock of 8 against 5 is an undercut: the defender receives 28. Gin against 18 earns the knocker 43. Return to the explanation when a decision is unclear.
Where a round can go wrong
Begin with the objective. Enter post-layoff values. This arithmetic tool does not choose card groupings from card images. Take the next action only when the current step is clear.
Common questions
What is the aim?
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Keep the active rule in mind. Use another round to revisit a decision.
How do I use the controls?
Use the two numeric fields, then Calculate score. This tool uses whole numbers. Look at the complete hand before deciding. Use another round to revisit a decision.
Which format is available?
Fixed house bonuses of 25. It does not include line bonuses or a match-end bonus. Look at the complete hand before deciding. Take the next action only when the current step is clear.
What should I check before a move?
Enter post-layoff values. This arithmetic tool does not choose card groupings from card images. Take a moment to read the table. Use another round to revisit a decision.
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. Work at your own pace. Check the relevant controls before continuing.
How is a tie scored?
A non-Gin deadwood tie is an undercut, so the defender receives 25 points. For a calm first round, focus on one decision. Return to the explanation when a decision is unclear.
Can I use other Gin bonus values?
This calculator uses the same 25/25 values as this site’s Gin table. Before making a move, check the cards in view. 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. Take a moment to read the table. Check the relevant controls before continuing.
Do I need an account or an app?
No. Open the page in a JavaScript-enabled browser. No player account or APK is needed. Work at your own pace. The same rule applies on a phone and on a computer.
Are these scores cash or prizes?
No. Points are used only for free play and practice. There are no deposits, cash stakes or withdrawals. Take a moment to read the table. Return to the explanation when a decision is unclear.