Game guide · XIAMI-GZS
Making your first moves in Gin Score Calculator
Keep the active rule in mind. Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Use another round to revisit a decision. Take a moment to read the table. Enter the knocker’s deadwood from 0 to 10. Zero means Gin. Take the next action only when the current step is clear.
Fixed house bonuses of 25. It does not include line bonuses or a match-end bonus.
Practice with a purpose
For a calm first round, focus on one decision. Enter the defender’s deadwood after any legal layoffs; against Gin no layoff is allowed. Take the next action only when the current step is clear.
What you need to achieve
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Use another round to revisit a decision. Treat this as a chance to practise one rule.
The steps to play
- 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.
Keyboard and screen 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. Work at your own pace.
See the idea in action
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.
Avoid this misunderstanding
Look at the complete hand before deciding. Enter post-layoff values. This arithmetic tool does not choose card groupings from card images. Return to the explanation when a decision is unclear.
A few questions answered
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. Return to the explanation when a decision is unclear.
How do I use the controls?
Use the two numeric fields, then Calculate score. This tool uses whole numbers. Begin with the objective. 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. For a calm first round, focus on one decision. 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. Keep the active rule in mind. Return to the explanation when a decision is unclear.
How is a tie scored?
A non-Gin deadwood tie is an undercut, so the defender receives 25 points. A clear plan starts with the current position. 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. 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. 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. Keep the active rule in mind. 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. Work at your own pace. Use another round to revisit a decision.