Game guide · JNJPJZ
Play Gin Score Calculator with the rules at hand
Before making a move, check the cards in view. 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. 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.
Build familiarity through play
Treat this as a chance to practise one rule. 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. Use another round to revisit a decision. Keep the active rule in mind.
How a round unfolds
- 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. The same rule applies on a phone and on a computer. For a calm first round, focus on one decision.
A closer look at one example
A knock of 8 against 5 is an undercut: the defender receives 28. Gin against 18 earns the knocker 43. Check the relevant controls before continuing.
A useful caution
A clear plan starts with the current position. Enter post-layoff values. This arithmetic tool does not choose card groupings from card images. Return to the explanation when a decision is unclear.
Further help with the game
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. 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. Treat this as a chance to practise one rule. 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. Use the rule sheet as a reference. 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. Keep the active rule in mind. 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. A clear plan starts with the current position. 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. For a calm first round, focus on one decision. Use another round to revisit a decision.
Can I use other Gin bonus values?
This calculator uses the same 25/25 values as this site’s Gin table. Look at the complete hand before deciding. 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. Take a moment to read the table. 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. Look at the complete hand before deciding. Use another round to revisit a decision.
