Game guide · JIEHUIDB
Gin Score Calculator: how a round works
Before making a move, check the cards in view. Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Check the relevant controls before continuing. Treat this as a chance to practise one rule. 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.
Bring this focus to a round
Before making a move, check the cards in view. Enter the defender’s deadwood after any legal layoffs; against Gin no layoff is allowed. Return to the explanation when a decision is unclear.
Aim for this result
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Return to the explanation when a decision is unclear. Take a moment to read the table.
A walkthrough of the rules
- 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. Check the relevant controls before continuing. Before making a move, check the cards in view.
Put the rules into context
A knock of 8 against 5 is an undercut: the defender receives 28. Gin against 18 earns the knocker 43. Use another round to revisit a decision.
Check this before moving on
Take a moment to read the table. Enter post-layoff values. This arithmetic tool does not choose card groupings from card images. Check the relevant controls before continuing.
Answers about the rules and controls
What is the aim?
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Look at the complete hand before deciding. The same rule applies on a phone and on a computer.
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. The same rule applies on a phone and on a computer.
Which format is available?
Fixed house bonuses of 25. It does not include line bonuses or a match-end bonus. Take a moment to read the table. Use another round to revisit a decision.
What should I check before a move?
Enter post-layoff values. This arithmetic tool does not choose card groupings from card images. Begin with the objective. Take the next action only when the current step is clear.
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. Treat this as a chance to practise one rule. 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. Use the rule sheet as a reference. 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. Keep the active rule in mind. Use another round to revisit a decision.
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. Take the next action only when the current step is clear.
Do I need an account or an app?
No. Open the page in a JavaScript-enabled browser. No player account or APK is needed. Look at the complete hand before deciding. Return to the explanation when a decision is unclear.
Are these scores cash or prizes?
No. Points are used only for free play and practice. There are no deposits, cash stakes or withdrawals. For a calm first round, focus on one decision. Return to the explanation when a decision is unclear.
