Game guide · JYDEJI
How to play Gin Score Calculator
A clear plan starts with the current position. Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Take the next action only when the current step is clear. 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.
An idea for your next attempt
Use the rule sheet as a reference. Enter the defender’s deadwood after any legal layoffs; against Gin no layoff is allowed. The same rule applies on a phone and on a computer.
The purpose of your moves
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Return to the explanation when a decision is unclear. Treat this as a chance to practise one rule.
The order of 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.
The controls to know
Use the two numeric fields, then Calculate score. This tool uses whole numbers. Take the next action only when the current step is clear. Begin with the objective.
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. The same rule applies on a phone and on a computer.
Check this before moving on
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.
Common questions
What is the aim?
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Take a moment to read the table. Check the relevant controls before continuing.
How do I use the controls?
Use the two numeric fields, then Calculate score. This tool uses whole numbers. Use the rule sheet as a reference. 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. Take a moment to read the table. The same rule applies on a phone and on a computer.
What should I check before a move?
Enter post-layoff values. This arithmetic tool does not choose card groupings from card images. Look at the complete hand before deciding. 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. 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. Treat this as a chance to practise one rule. 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. Begin with the objective. Check the relevant controls before continuing.
Does it automatically lay off cards?
No. Enter the defender’s final value after layoffs. The playable Gin table performs card-based layoff analysis. Treat this as a chance to practise one rule. 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. For a calm first round, focus on one decision. 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. Keep the active rule in mind. The same rule applies on a phone and on a computer.